CN105519012A

CN105519012A - Signal transmission method and device

Info

Publication number: CN105519012A
Application number: CN201480033995.XA
Authority: CN
Inventors: 袁震; 赵虎; 张巧明; 龚兰平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-07-09
Filing date: 2014-07-09
Publication date: 2016-04-20
Anticipated expiration: 2034-07-09
Also published as: WO2016004589A1; CN105519012B

Abstract

The present invention relates to the field of communications. Disclosed are a signal transmission method and device, which can reduce the number of feeders in a communication device and reduce costs of the communication device. The specific solution is: acquiring a first send signal and a second send signal; combining the first send signal and the second send signal into a transmit signal, and transmitting the transmit signal through a feeder from a near-end unit to a far-end unit; after the transmit signal is transmitted to the far-end unit, separating the first send signal and the second send signal from the transmit signal; adjusting the frequency of the second send signal to generate a second frequency-converted signal; and separately sending the first send signal and the second frequency-converted signal. The present invention is used in signal sending and signal receiving.

Description

Signal transmission method and equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a signal transmission method and device.

Background

With the increasing demand of mobile data services, mobile application contents are continuously abundant, and in order to improve data transmission capability under the condition of limited spectrum resources, MIMO (multiple input multiple output) technology is widely applied in the communication field, for example, LTE (long term evolution) network, WIFI (wireless broadband) network, and the like. In the MIMO technology, data transmission is performed through a plurality of antennas in a plurality of channels with the same frequency point, and data reception is performed through a plurality of antennas and channels, so that parallel data can be transmitted or received simultaneously, and data transmission capability under limited spectrum resources is sequentially improved.

However, in the prior art, transmission needs to be performed between a RRU (radio remote unit) and a BBU (building base and unit) of a communication device through a feeder, each path of transmission signal or reception signal corresponds to an independent channel, and each independent channel needs to be configured with a feeder, which causes the communication device to have a high cost and is inconvenient to construct.

Disclosure of Invention

Embodiments of the present invention provide a signal transmission method and device, which can reduce the number of feeders in a communication device and reduce the cost of the communication device.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a transmitting device includes: the antenna comprises a near-end unit and a far-end unit, wherein the near-end unit comprises a combiner, and the far-end unit comprises a splitter, a frequency converter, a first antenna and a second antenna;

the combiner is configured to obtain a first sending signal and a second sending signal, combine the first sending signal and the second sending signal into a transmission signal, and transmit the transmission signal to the splitter through a feeder line, where the first sending signal is a radio frequency signal, the second sending signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency;

the splitter is configured to receive the transmission signal transmitted by the combiner, separate the first transmission signal and the second transmission signal from the transmission signal, transmit the first transmission signal to a first antenna, and transmit the second transmission signal to the frequency converter;

the frequency converter is configured to receive the second transmission signal transmitted by the splitter, adjust the frequency of the second transmission signal to generate a second frequency conversion signal, and transmit the second frequency conversion signal to the second antenna, where the second frequency conversion signal is a radio frequency signal;

the first antenna is configured to receive the first transmission signal transmitted by the splitter and transmit the first transmission signal;

and the second antenna is used for receiving the second frequency conversion signal transmitted by the frequency converter and sending the second frequency conversion signal.

With reference to the first aspect, in a first possible implementation manner, the remote unit further includes a detection regulator and a first amplifier;

the detection regulator is used for detecting the amplitude of the first transmission signal;

the first amplifier is configured to perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first transmission signal detected by the detection adjuster, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and the amplitude of the first transmission signal is smaller than a preset threshold.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the near-end unit further includes a clock oscillator;

the clock oscillator is used for generating a clock signal and transmitting the clock signal to the combiner;

the combiner is further configured to receive the clock signal transmitted by the clock oscillator, and combine the clock signal, the first transmission signal, and the second transmission signal into the transmission signal;

the splitter is further configured to separate the clock signal, the first transmission signal, and the second transmission signal from the transmission signal, and transmit the clock signal to the frequency converter;

the frequency converter is further configured to receive the clock signal transmitted by the splitter, adjust a frequency of the clock signal to generate a first mixing signal, and perform mixing processing on the first mixing signal and the second transmission signal to generate the second frequency conversion signal, where the frequency of the first mixing signal is an absolute value of a difference between the frequency of the first transmission signal and the frequency of the second transmission signal.

With reference to any one of the first aspect to the second possible implementation manner of the first aspect, in a third possible implementation manner, the near-end unit further includes a digital signal processor, a first digital-to-analog converter, and a second digital-to-analog converter;

the digital signal processor is configured to acquire a baseband signal, perform digital signal modulation on the baseband signal to generate a first digital signal and a second digital signal, transmit the first digital signal to the first digital-to-analog converter, and transmit the second digital signal to the second digital-to-analog converter;

the first digital-to-analog converter is configured to receive the first digital signal transmitted by the digital signal processor, perform digital-to-analog conversion on the first digital signal, and generate the first sending signal;

the second digital-to-analog converter is configured to receive the second digital signal transmitted by the digital signal processor, and perform digital-to-analog conversion on the second digital signal to generate the second sending signal.

With reference to any one of the first aspect to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the near-end unit further includes a second amplifier;

the second amplifier is used for amplifying the first transmission signal.

In a second aspect, a receiving apparatus includes: the antenna comprises a far-end unit and a near-end unit, wherein the far-end unit comprises a combiner, a frequency converter, a first antenna and a second antenna, and the near-end unit comprises a splitter;

the first antenna is configured to receive a first received signal and transmit the first received signal to the combiner, where the first received signal is a radio frequency signal, and the radio frequency signal is a signal with a transmission frequency;

the second antenna is configured to receive a second frequency-converted signal, transmit the second frequency-converted signal to the frequency converter, where the second frequency-converted signal is a radio-frequency signal, and the second frequency-converted signal is a signal generated by frequency mixing processing of a second received signal;

the frequency converter is configured to receive the second frequency-converted signal transmitted by the second antenna, adjust the frequency of the second frequency-converted signal to generate a second received signal, and transmit the second received signal to the combiner;

the combiner is configured to receive the first receive signal transmitted by the first antenna and the second receive signal transmitted by the frequency converter, combine the first receive signal and the second receive signal into a transmit signal, and transmit the transmit signal to the splitter through a feeder line;

the splitter is configured to receive the transmission signal transmitted by the combiner, and separate the first reception signal and the second reception signal from the transmission signal.

With reference to the second aspect, in a first possible implementation manner, the remote unit further includes a first amplifier;

the first amplifier is used for adjusting the amplitude of the second frequency conversion signal, so that the absolute value of the difference between the amplitude of the second frequency conversion signal and a preset amplitude is smaller than a preset threshold value.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner,

the frequency converter is further configured to acquire a clock signal, adjust a frequency of the clock signal to generate a second mixing signal, and perform mixing processing on the second mixing signal and the second frequency conversion signal to generate the second receiving signal, where a frequency of the second mixing signal is an absolute value of a difference between a frequency of the first receiving signal and a frequency of the second receiving signal.

With reference to any one implementation manner of the second aspect to the second possible implementation manner of the second aspect, in a third possible implementation manner, the near-end unit further includes a first analog-to-digital converter, a second analog-to-digital converter, and a digital signal processor;

the first analog-to-digital converter is configured to perform analog-to-digital conversion on the first receiving signal split by the splitter to generate a first digital signal, and transmit the first digital signal to the digital signal processor;

the second analog-to-digital converter is configured to perform analog-to-digital conversion on the second received signal split by the splitter to generate a second digital signal, and transmit the second digital signal to the digital signal processor;

the digital signal processor is configured to receive the first digital signal transmitted by the first analog-to-digital converter and the second digital signal transmitted by the second analog-to-digital converter, and perform digital signal demodulation on the first digital signal and the second digital signal to generate a baseband signal.

With reference to any one of the third possible implementation manners of the second aspect to the second aspect, in a fourth possible implementation manner, the near-end unit further includes a second amplifier;

and the second amplifier is used for amplifying the first receiving signal separated by the splitter.

In a third aspect, a duplex communication apparatus includes a near-end unit and a far-end unit, where the near-end unit includes a first multiplexer, and the far-end unit includes a second multiplexer, a first frequency converter, a second frequency converter, a first duplexer, a second duplexer, a first antenna, and a second antenna;

the first multiplexer is configured to obtain a first sending signal and a second sending signal when the duplex communication device sends a signal, combine the first sending signal and the second sending signal into a transmission signal, and transmit the transmission signal to the second multiplexer through a feeder line, where the first sending signal is a radio frequency signal, the second sending signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency;

the second multiplexer is configured to receive the transmission signal transmitted by the first multiplexer, separate the first transmission signal and the second transmission signal from the transmission signal, transmit the first transmission signal to the first multiplexer, and transmit the second transmission signal to the first frequency converter when the duplex communication device transmits a signal;

the first frequency converter is configured to receive the second transmit signal transmitted by the second multiplexer, adjust the frequency of the second transmit signal to generate a second frequency-converted signal, and transmit the second frequency-converted signal to the second multiplexer, where the second frequency-converted signal is a radio frequency signal;

the first multiplexer is configured to receive the first transmit signal transmitted by the second multiplexer, separate the first transmit signal from the received signal, and transmit the first transmit signal to the first antenna when the duplex communication device transmits a signal;

the first antenna is configured to receive the first transmission signal transmitted by the first duplexer and transmit the first transmission signal when the duplex communication device transmits a signal;

the second duplexer is configured to receive the second frequency-converted signal transmitted by the first frequency converter, separate the second frequency-converted signal from the received signal, and transmit the second frequency-converted signal to the second antenna when the duplex communication device transmits a signal;

the second antenna is configured to receive the second frequency-converted signal transmitted by the second duplexer and send the second frequency-converted signal when the duplex communication device sends a signal;

or,

the first antenna is configured to receive a first receiving signal when the duplex communication apparatus receives a signal, and transmit the first receiving signal to the first duplexer, where the first receiving signal is a radio frequency signal, and the radio frequency signal is a signal having a transmitting frequency;

the first multiplexer is configured to receive the first receive signal transmitted by the first antenna, separate the first receive signal from a transmitted signal, and transmit the first receive signal to the second multiplexer when the duplex communication device receives a signal;

the second antenna is configured to receive a second frequency-converted signal when the duplex communication apparatus receives a signal, and transmit the second frequency-converted signal to the second duplexer, where the second frequency-converted signal is a radio frequency signal, and the second frequency-converted signal is a signal generated by frequency mixing processing of a second received signal;

the second duplexer is configured to receive the second frequency-converted signal transmitted by the second antenna, separate the second frequency-converted signal from the transmitted signal, and transmit the second frequency-converted signal to the second frequency converter when the duplex communication device receives a signal;

the second frequency converter is configured to receive the second frequency-converted signal transmitted by the second multiplexer, adjust the frequency of the second frequency-converted signal to generate a second received signal, and transmit the second received signal to the second multiplexer;

the second multiplexer is configured to receive the first receive signal transmitted by the first multiplexer and the second receive signal transmitted by the second frequency converter when the duplex communication device receives a signal, combine the first receive signal and the second receive signal into a transmit signal, and transmit the transmit signal to the first multiplexer through a feeder line;

the first multiplexer is configured to receive the transmission signal transmitted by the second multiplexer when the duplex communication device receives a signal, and separate the first reception signal and the second reception signal from the transmission signal.

With reference to the third aspect, in a first possible implementation manner, the remote unit further includes a detection regulator, a first adjustable amplifier, and a second adjustable amplifier;

the detection regulator is used for detecting the amplitude of the first transmission signal when the duplex communication equipment transmits signals;

the first adjustable amplifier is configured to, when the duplex communication apparatus sends a signal, perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first sending signal detected by the detection adjuster, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and the amplitude of the first sending signal is smaller than a preset threshold;

and the second adjustable amplifier is configured to, when the duplex communication apparatus receives a signal, perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first transmission signal detected by the detection adjuster, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and the amplitude of the first transmission signal is smaller than a preset threshold.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the near-end unit further includes a clock oscillator;

the clock oscillator is used for generating a clock signal and transmitting the clock signal to the first multiplexer;

the first multiplexer is configured to receive the clock signal transmitted by the clock oscillator when the duplex communication device sends a signal, and combine the clock signal, the first sending signal, and the second sending signal into the transmission signal;

the second multiplexer is further configured to separate the clock signal, the first transmit signal, and the second transmit signal from the transmission signal when the duplex communication device transmits a signal, and transmit the clock signal to the first frequency converter and the second frequency converter;

the first frequency converter is further configured to receive the clock signal transmitted by the second multiplexer when the duplex communication device sends a signal, adjust a frequency of the clock signal to generate a first mixed signal, and perform mixing processing on the first mixed signal and the second sending signal to generate the second frequency-converted signal, where the frequency of the first mixed signal is an absolute value of a difference between the frequency of the first sending signal and the frequency of the second sending signal;

the second frequency converter is further configured to receive the clock signal transmitted by the second multiplexer when the duplex communication device receives a signal, adjust a frequency of the clock signal to generate a second mixing signal, and perform mixing processing on the second mixing signal and the second frequency-converted signal to generate the second received signal, where the frequency of the second mixing signal is an absolute value of a difference between the frequency of the first received signal and the frequency of the second received signal.

With reference to any one implementation manner of the third aspect to the second possible implementation manner of the third aspect, in a third possible implementation manner, the near-end unit further includes a first digital-to-analog converter, a second digital-to-analog converter, a first analog-to-digital converter, a second analog-to-digital converter, and a digital signal processor;

the digital signal processor is configured to obtain a baseband signal when the duplex communication device sends a signal, perform digital signal modulation on the baseband signal to generate a first digital signal and a second digital signal, transmit the first digital signal to the first digital-to-analog converter, and transmit the second digital signal to the second digital-to-analog converter;

the first digital-to-analog converter is configured to receive the first digital signal transmitted by the digital signal processor when the duplex communication device sends a signal, and perform digital-to-analog conversion on the first digital signal to generate the first sending signal;

the second digital-to-analog converter is configured to receive the second digital signal transmitted by the digital signal processor when the duplex communication device sends a signal, perform digital-to-analog conversion on the second digital signal, and generate the second sending signal;

the first analog-to-digital converter is configured to, when the duplex communication device receives a signal, perform analog-to-digital conversion on the first received signal separated by the first multiplexer to generate a first digital signal, and transmit the first digital signal to the digital signal processor;

the second analog-to-digital converter is configured to, when the duplex communication apparatus receives a signal, perform analog-to-digital conversion on the second received signal separated by the first multiplexer to generate a second digital signal, and transmit the second digital signal to the digital signal processor;

the digital signal processor is further configured to receive the first digital signal transmitted by the first analog-to-digital converter and the second digital signal transmitted by the second analog-to-digital converter when the duplex communication device receives a signal, and perform digital signal demodulation on the first digital signal and the second digital signal to generate a baseband signal.

With reference to any one of the third to the third possible implementation manners of the third aspect, in a fourth possible implementation manner, the near-end unit further includes a third amplifier and a fourth amplifier;

the third amplifier is used for amplifying the first transmission signal when the duplex communication equipment transmits the signal;

and the fourth amplifier is used for amplifying the first received signal when the duplex communication equipment receives the signal.

In a fourth aspect, a signal transmission method includes:

acquiring a first sending signal and a second sending signal, wherein the first sending signal is a radio frequency signal, the second sending signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency;

combining the first sending signal and the second sending signal into a transmission signal, and transmitting the transmission signal from the near-end unit to the far-end unit through a feeder line;

after the transmission signal is transmitted to a remote unit, separating the first sending signal and the second sending signal from the transmission signal;

adjusting the frequency of the second transmission signal to generate a second frequency conversion signal, wherein the second frequency conversion signal is a radio frequency signal;

and respectively transmitting the first transmitting signal and the second frequency conversion signal.

With reference to the fourth aspect, in a first possible implementation manner, after the adjusting the frequency of the second transmission signal to generate a second frequency-converted signal, the method further includes:

and detecting the amplitude of the first sending signal, and carrying out amplitude adjustment on the second frequency conversion signal according to the amplitude of the first sending signal, so that the absolute value of the difference between the amplitude of the second frequency conversion signal and the amplitude of the first sending signal is smaller than a preset threshold value.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the combining the first transmission signal and the second transmission signal into a transmission signal includes:

acquiring a clock signal, and combining the clock signal, the first sending signal and the second sending signal into the transmission signal;

after the transmission signal is transmitted to a remote unit, the first sending signal and the second sending signal are separated from the transmission signal, including:

after the transmission signal is transmitted to a remote unit, separating the clock signal, the first sending signal and the second sending signal from the transmission signal;

the adjusting the frequency of the second transmission signal according to the frequency of the first transmission signal and generating a second frequency-converted signal includes:

and adjusting the frequency of the clock signal to generate a first mixing signal, and mixing the first mixing signal and the second transmission signal to generate the second variable frequency signal, wherein the frequency of the first mixing signal is an absolute value of a difference between the frequency of the first transmission signal and the frequency of the second transmission signal.

With reference to any one implementation manner of the second possible implementation manner of the fourth aspect to the fourth aspect, in a third possible implementation manner, the acquiring the first transmission signal and the second transmission signal includes:

obtaining a baseband signal, and carrying out digital signal modulation on the baseband signal to generate a first digital signal and a second digital signal;

and performing digital-to-analog conversion on the first digital signal to generate the first sending signal, and performing digital-to-analog conversion on the second digital signal to generate the second sending signal.

With reference to any one of the third possible implementation manners of the fourth aspect to the fourth aspect, in a fourth possible implementation manner, after the obtaining the first transmission signal and the second transmission signal, the method further includes:

and amplifying the first transmission signal.

In a fifth aspect, a signal receiving method includes:

receiving a first receiving signal and a second frequency-converted signal, wherein the first receiving signal and the second frequency-converted signal are radio frequency signals, the second frequency-converted signal is a signal generated by frequency mixing processing of the second receiving signal, the second receiving signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency;

adjusting the frequency of the second frequency-converted signal to generate the second received signal;

combining the first received signal and the second received signal into a transmission signal, and transmitting the transmission signal from the remote unit to the near-end unit through a feeder line;

after the transmission signal is transmitted to the near-end unit, the first reception signal and the second reception signal are separated from the transmission signal.

With reference to the fifth aspect, in a first possible implementation manner, after receiving the first received signal and the second frequency-converted signal, the method further includes:

and adjusting the amplitude of the second frequency conversion signal to enable the absolute value of the difference between the amplitude of the second frequency conversion signal and a preset amplitude to be smaller than a preset threshold value.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the adjusting the frequency of the second frequency-converted signal to generate a second received signal includes:

acquiring a clock signal, adjusting the frequency of the clock signal to generate a second mixing signal, and mixing the second mixing signal with the second frequency conversion signal to generate the second receiving signal, wherein the frequency of the second mixing signal is an absolute value of a difference between the frequency of the first receiving signal and the frequency of the second receiving signal.

With reference to any one implementation manner of the second possible implementation manner of the fifth aspect to the fifth aspect, in a third possible implementation manner, after the separating the first received signal and the second received signal from the transmission signal, the method further includes:

performing analog-to-digital conversion on the first receiving signal to generate a first digital signal, and performing analog-to-digital conversion on the second receiving signal to generate a second digital signal;

and carrying out digital signal modulation on the first digital signal and the second digital signal to generate a baseband signal.

With reference to any one of the third possible implementation manners of the fifth aspect to the fifth aspect, in a fourth possible implementation manner, after separating the first received signal and the second received signal from the transmission signal, the method further includes:

and amplifying the first received signal.

According to the signal transmission method and device provided by the embodiment of the invention, the first signal and the second signal are combined into the transmission signal by acquiring the first signal and the second signal, the transmission signal is transmitted from the near-end unit to the far-end unit through the feeder line, the first signal and the second signal are separated from the transmission signal after the transmission signal is transmitted to the far-end unit, the frequency of the second signal is adjusted to generate the second variable frequency signal, and the first signal and the second variable frequency signal are respectively transmitted, so that the number of feeder lines in communication equipment can be reduced, and the cost of the communication equipment is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sending device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another sending device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a receiving device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another receiving device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a duplex communication apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another duplex communication apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a duplex communication apparatus according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a duplex communication apparatus according to yet another embodiment of the present invention;

fig. 9 is a flowchart illustrating a signal transmission method according to an embodiment of the present invention;

fig. 10 is a flowchart illustrating a signal receiving method according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a transmitting apparatus, which may be optionally applied to MIMO technology, and as shown in fig. 1, the transmitting apparatus 10 includes a near-end unit 11 and a far-end unit 12, where the near-end unit 11 includes a combiner 1101, and the far-end unit 12 includes a splitter 1201, a frequency converter 1202, a first antenna 1203, and a second antenna 1204.

The combiner 1101 is configured to obtain a first sending signal and a second sending signal, combine the first sending signal and the second sending signal into a transmission signal, and transmit the transmission signal to the splitter 1201 through a feeder line, where the first sending signal is a radio frequency signal, the second sending signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency.

The splitter 1201 is configured to receive the transmission signal transmitted by the combiner 1101, separate a first transmission signal and a second transmission signal from the transmission signal, transmit the first transmission signal to the first antenna 1203, and transmit the second transmission signal to the frequency converter 1202.

And a frequency converter 1202, configured to receive the second transmission signal transmitted by the splitter 1201, adjust a frequency of the second transmission signal to generate a second frequency-converted signal, and transmit the second frequency-converted signal to a second antenna 1204, where the second frequency-converted signal is a radio frequency signal.

And a first antenna 1203 configured to receive the first transmission signal transmitted by the splitter 1201 and transmit the first transmission signal.

A second antenna 1204 is configured to receive the second frequency-converted signal transmitted by the frequency converter 1202 and transmit the second frequency-converted signal.

Optionally, referring to fig. 2, the remote unit 12 further includes a detection regulator 1205 and a first amplifier 1206.

A detection adjuster 1205 for detecting the amplitude of the first transmission signal.

The first amplifier 1206 is configured to perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first transmission signal detected by the detection adjuster 1205, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and the amplitude of the first transmission signal is smaller than a preset threshold.

Optionally, referring to fig. 2, the near-end unit 11 further includes a clock oscillator 1102.

The clock oscillator 1102 is configured to generate a clock signal and transmit the clock signal to the combiner 1101.

The combiner 1101 is further configured to receive a clock signal transmitted by the clock oscillator 1102, and combine the clock signal, the first transmission signal, and the second transmission signal into a transmission signal.

The splitter 1201 is further configured to split the clock signal, the first transmission signal, and the second transmission signal from the transmission signal, and transmit the clock signal to the frequency converter 1202.

The frequency converter 1202 is further configured to receive the clock signal transmitted by the splitter 1201, adjust a frequency of the clock signal to generate a first mixed signal, and perform mixing processing on the first mixed signal and a second transmission signal to generate a second converted signal, where a frequency of the first mixed signal is a difference between a frequency of the first transmission signal and a frequency of the second transmission signal.

Optionally, referring to fig. 2, the near-end unit 11 further includes a digital signal processor 1103, a first digital-to-analog converter 1104 and a second digital-to-analog converter 1105.

The digital signal processor 1103 is configured to obtain a baseband signal, perform digital signal modulation on the baseband signal to generate a first digital signal and a second digital signal, transmit the first digital signal to the first digital-to-analog converter 1104, and transmit the second digital signal to the second digital-to-analog converter 1105.

The first digital-to-analog converter 1104 is configured to receive the first digital signal transmitted by the digital signal processor 1103, and perform digital-to-analog conversion on the first digital signal to generate a first sending signal.

And a second digital-to-analog converter 1105, configured to receive the second digital signal transmitted by the digital signal processor 1103, and perform digital-to-analog conversion on the second digital signal to generate a second sending signal.

The near end unit 11 further comprises a second amplifier 1106.

A second amplifier 1106 amplifies the first transmission signal.

The sending device provided in the embodiment of the present invention obtains the first sending signal and the second sending signal, combines the first sending signal and the second sending signal into the transmission signal, transmits the transmission signal from the near-end unit to the far-end unit through a feeder line, separates the first sending signal and the second sending signal from the transmission signal after the transmission signal is transmitted to the far-end unit, adjusts the frequency of the second sending signal to generate the second variable frequency signal, and sends the first sending signal and the second variable frequency signal respectively, thereby reducing the number of feeder lines in the communication device and reducing the cost of the communication device.

An embodiment of the present invention provides a receiving apparatus, which may be optionally applied to the MIMO technology, and as shown in fig. 3, the receiving apparatus 30 includes a far-end unit 31 and a near-end unit 32, where the far-end unit 31 includes a combiner 3101, a frequency converter 3102, a first antenna 3103 and a second antenna 3104, and the near-end unit 32 includes a splitter 3201.

The first antenna 3103 is configured to receive a first reception signal, which is a radio frequency signal having a transmission frequency, and transmit the first reception signal to the combiner 3101.

A second antenna 3104, which is used for receiving the second frequency-converted signal, which is a radio frequency signal and is a signal generated by the frequency mixing process of the second received signal, and transmitting the second frequency-converted signal to the frequency converter 3102.

The frequency converter 3102 is configured to receive the second frequency-converted signal transmitted by the second antenna 3104, adjust the frequency of the second frequency-converted signal to generate a second received signal, and transmit the second received signal to the combiner 3101.

The combiner 3101 is configured to receive a first received signal transmitted by the first antenna 3103 and a second received signal transmitted by the frequency converter 3102, combine the first received signal and the second received signal into a transmission signal, and transmit the transmission signal to the splitter 3201 through a feeder line.

Splitter 3201 is configured to receive the transmission signal transmitted by combiner 3101 and separate a first reception signal and a second reception signal from the transmission signal.

Optionally, referring to fig. 4, the remote unit 31 further comprises a first amplifier 3105.

The first amplifier 3105 is configured to perform amplitude adjustment on the second frequency-converted signal, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and a preset amplitude is smaller than a preset threshold.

The frequency converter 3102 is further configured to obtain a clock signal, adjust a frequency of the clock signal to generate a second mixed signal, and perform mixing processing on the second mixed signal and a second frequency-converted signal to generate a second received signal, where the frequency of the second mixed signal is a difference between the frequency of the first received signal and the frequency of the second received signal.

Optionally, referring to fig. 4, the near-end unit 32 further includes a first analog-to-digital converter 3202, a second analog-to-digital converter 3203, and a digital signal processor 3204.

The first analog-to-digital converter 3202 is configured to perform analog-to-digital conversion on the first received signal split by the splitter 3201 to generate a first digital signal, and transmit the first digital signal to the digital signal processor 3204.

A second analog-to-digital converter 3203, configured to perform analog-to-digital conversion on the second received signal split by the splitter 3201 to generate a second digital signal, and transmit the second digital signal to the digital signal processor 3204.

The digital signal processor 3204 is configured to receive the first digital signal transmitted by the first analog-to-digital converter 3202 and the second digital signal transmitted by the second analog-to-digital converter 3203, and perform digital signal demodulation on the first digital signal and the second digital signal to generate a baseband signal.

The near end unit 32 also includes a second amplifier 3205.

A second amplifier 3205 is configured to amplify the first received signal split by the splitter 3201.

The receiving device provided in the embodiment of the present invention generates the second receiving signal by receiving the first receiving signal and the second frequency-converted signal, adjusting the frequency of the second frequency-converted signal, combining the first receiving signal and the second receiving signal into the transmission signal, and transmitting the transmission signal from the remote unit to the near-end unit through a feeder line, and after the transmission signal is transmitted to the near-end unit, separating the first receiving signal and the second receiving signal from the transmission signal, which can reduce the number of feeder lines in the communication device and reduce the cost of the communication device.

An embodiment of the present invention provides a duplex communication apparatus, which may be optionally applied to the MIMO technology, and as shown in fig. 5, the duplex communication apparatus 50 includes a near-end unit 51 and a far-end unit 52, where the near-end unit 51 includes a first multiplexer 5101, and the far-end unit 52 includes a second multiplexer 5201, a first frequency converter 5202, a second frequency converter 5203, a first duplexer 5204, a second duplexer 5205, a first antenna 5206, and a second antenna 5207.

The first multiplexer 5101 is configured to, when the duplex communications apparatus 50 sends a signal, obtain a first sending signal and a second sending signal, combine the first sending signal and the second sending signal into a transmission signal, and transmit the transmission signal to the second multiplexer 5201 through a feeder line, where the first sending signal is a radio frequency signal, the second sending signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency.

The second multiplexer 5201 is configured to receive the transmission signal transmitted by the first multiplexer 5101 when the duplex communication apparatus 50 transmits a signal, separate the first transmission signal and the second transmission signal from the transmission signal, transmit the first transmission signal to the first multiplexer 5204, and transmit the second transmission signal to the first frequency converter 5202.

The first frequency converter 5202 is configured to receive the second transmit signal transmitted by the second multiplexer 5201, adjust the frequency of the second transmit signal to generate a second frequency-converted signal, and transmit the second frequency-converted signal to the second multiplexer 5205, where the second frequency-converted signal is a radio frequency signal.

The first multiplexer 5204 is configured to receive the first transmission signal transmitted from the second multiplexer 5201, separate the first transmission signal from the received signal, and transmit the first transmission signal to the first antenna 5206 when the duplex communication apparatus 50 transmits a signal.

The first antenna 5206 is configured to receive the first transmission signal transmitted by the first duplexer 5204 and transmit the first transmission signal when the duplex communication apparatus 50 transmits the signal.

The second duplexer 5205 is configured to receive the second frequency-converted signal transmitted by the first frequency converter 5202, separate the second frequency-converted signal from the received signal, and transmit the second frequency-converted signal to the second antenna 5207 when the duplex communication apparatus 50 transmits a signal.

A second antenna 5207 is used for receiving the second frequency-converted signal transmitted by the second duplexer 5205 and transmitting the second frequency-converted signal when the duplex communication apparatus 50 transmits the signal.

Or,

the first antenna 5206 is configured to receive a first received signal when the duplex communication apparatus 50 receives a signal, and transmit the first received signal to the first duplexer 5204, where the first received signal is a radio frequency signal and the radio frequency signal is a signal having a transmission frequency.

The first multiplexer 5204 is configured to receive the first received signal transmitted by the first antenna 5206 when the duplex communication apparatus 50 receives a signal, separate the first received signal from the transmitted signal, and transmit the first received signal to the second multiplexer 5201.

A second antenna 5207 for receiving the second frequency-converted signal when the duplex communication apparatus 50 receives the signal, and transmitting the second frequency-converted signal to the second duplexer 5205, the second frequency-converted signal is a radio frequency signal, and the second frequency-converted signal is a signal generated by the frequency mixing process of the second received signal.

The second duplexer 5205 is configured to receive the second frequency-converted signal transmitted by the second antenna 5207 when the duplex communication apparatus 50 receives the signal, separate the second frequency-converted signal from the transmitted signal, and transmit the second frequency-converted signal to the second frequency converter 5203.

The second frequency converter 5203 is configured to receive the second frequency-converted signal transmitted by the second multiplexer 5205, adjust the frequency of the second frequency-converted signal to generate a second received signal, and transmit the second received signal to the second multiplexer 5201.

The second multiplexer 5201 is configured to, when the duplex communications apparatus 50 receives a signal, receive the first received signal transmitted by the first multiplexer 5204 and the second received signal transmitted by the second frequency converter 5203, combine the first received signal and the second received signal into a transmission signal, and transmit the transmission signal to the first multiplexer 5101 through a feeder line.

The first multiplexer 5101 is configured to receive the transmission signal transmitted by the second multiplexer 5201 when the duplex communication apparatus 50 receives the signal, and separate the first reception signal and the second reception signal from the transmission signal.

Optionally, referring to fig. 6, the remote unit 52 further includes a detection regulator 5208, a first adjustable amplifier 5209, and a second adjustable amplifier 5210.

Detection regulator 5208 detects an amplitude of the first transmitted signal when duplex communication apparatus 50 transmits the signal.

The first adjustable amplifier 5209 is configured to, when the duplex communication apparatus 50 transmits a signal, perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first transmission signal detected by the detection adjuster 5208, so that an absolute value of a difference between the amplitude of the second frequency-converted signal and the amplitude of the first transmission signal is smaller than a preset threshold.

A second adjustable amplifier 5210, configured to, when the duplex communication apparatus 50 receives a signal, perform amplitude adjustment on the second frequency-converted signal according to the amplitude of the first transmission signal detected by the detection adjuster 5208, so that the absolute value of the difference between the amplitude of the second frequency-converted signal and the amplitude of the first transmission signal is smaller than a preset threshold.

Here, further, referring to fig. 6, the detection regulator 5208 may sample the first transmission signal and the second frequency-converted signal amplified by the first adjustable amplifier 5203, since the signal transmission is continuous, it is assumed that the signal is sampled once in a predetermined period, and thus, the amplitude difference between the first transmission signal and the second frequency-converted signal sampled in the period, the second frequency-converted signal can be adjusted in the next period, that is, the difference between the amplitudes of the two signals of the first sending signal and the second frequency-converted signal amplified by the first adjustable amplifier 5209 at the previous time is transmitted to the first adjustable amplifier 5209 and the second adjustable amplifier 5210 respectively, so that the first adjustable amplifier 5209 adjusts the amplitude of the second frequency-converted signal to be transmitted at this time, at the same time, so that the second adjustable amplifier 5210 adjusts the amplitude of the second frequency-converted signal received at this time.

Optionally, referring to fig. 6, the near-end unit 51 further includes a clock oscillator 5102.

The clock oscillator 5102 generates a clock signal, and transmits the clock signal to the first multiplexer 5101.

The first multiplexer 5101 is configured to receive the clock signal transmitted by the clock oscillator 5102 when the duplex communication apparatus 50 transmits a signal, and combine the clock signal, the first transmission signal, and the second transmission signal into a transmission signal.

The second multiplexer 5201 is further configured to separate the clock signal, the first transmission signal, and the second transmission signal from the transmission signal when the duplex communication apparatus 50 transmits the signal, and transmit the clock signal to the first frequency converter 5202 and the second frequency converter 5203.

The first frequency converter 5202 is further configured to receive the clock signal transmitted by the second multiplexer 5201 when the duplex communication device 50 transmits a signal, adjust a frequency of the clock signal to generate a first mixed signal, and perform mixing processing on the first mixed signal and a second transmitted signal to generate a second frequency-converted signal, where the frequency of the first mixed signal is a difference between the frequency of the first transmitted signal and the frequency of the second transmitted signal.

The second frequency converter 5203 is further configured to receive the clock signal transmitted by the second multiplexer 5201 when the duplex communication device 50 receives the signal, adjust a frequency of the clock signal to generate a second mixed signal, and perform mixing processing on the second mixed signal and the second frequency-converted signal to generate a second received signal, where the frequency of the second mixed signal is a difference between the frequency of the first received signal and the frequency of the second received signal.

Optionally, referring to fig. 6, the near-end unit 51 further includes a first digital-to-analog converter 5103, a second digital-to-analog converter 5104, a first analog-to-digital converter 5105, a second analog-to-digital converter 5106, and a digital signal processor 5107.

The digital signal processor 5107 is configured to obtain a baseband signal when the duplex communication apparatus 50 sends a signal, perform digital signal modulation on the baseband signal to generate a first digital signal and a second digital signal, transmit the first digital signal to the first digital-to-analog converter 5103, and transmit the second digital signal to the second digital-to-analog converter 5104.

The first digital-to-analog converter 5103 is configured to receive the first digital signal transmitted by the digital signal processor 5107 when the duplex communication apparatus 50 transmits a signal, perform digital-to-analog conversion on the first digital signal, and generate a first transmission signal.

The second digital-to-analog converter 5104 is configured to receive a second digital signal transmitted by the digital signal processor 5107 when the duplex communication apparatus 50 transmits a signal, perform digital-to-analog conversion on the second digital signal, and generate a second transmission signal.

The first analog-to-digital converter 5105 is configured to, when the duplex communication apparatus 50 receives a signal, perform analog-to-digital conversion on the first received signal separated by the first multiplexer 5101 to generate a first digital signal, and transmit the first digital signal to the digital signal processor 5107.

The second analog-to-digital converter 5106 is configured to perform analog-to-digital conversion on the second received signal separated by the first multiplexer 5101 to generate a second digital signal when the duplex communication apparatus 50 receives a signal, and transmit the second digital signal to the digital signal processor 5107.

The digital signal processor 5107 is further configured to receive a first digital signal transmitted by the first analog-to-digital converter 5105 and a second digital signal transmitted by the second analog-to-digital converter 5106 when the duplex communication apparatus 50 receives a signal, and perform digital signal demodulation on the first digital signal and the second digital signal to generate a baseband signal.

Here, the digital signal processor 5107 and the first digital-to-analog converter 5103 perform analog modulation, preferably amplitude modulation, on the baseband signal, and the digital signal processor 5107 and the second digital-to-analog converter 5104 also perform analog modulation on the baseband signal; correspondingly, the digital signal processor 5105 and the first analog-to-digital converter 5105 perform analog modulation and demodulation on the first signal, preferably, the analog modulation and demodulation is amplitude modulation and demodulation, the digital signal processor 5105 and the second analog-to-digital converter 5106 also perform analog modulation and demodulation on the second signal, and there are various implementation manners for signal modulation and demodulation, this embodiment only exemplifies one kind of circuit for illustration, and does not represent that the signal modulation and demodulation in this embodiment is limited to this circuit structure, and the specific implementation manner of modulation and demodulation in the present invention is not limited.

Optionally, referring to fig. 6, the near-end unit 51 further comprises a third amplifier 5108 and a fourth amplifier 5109. Alternatively, the third amplifier 5108 and the fourth amplifier 5109 may be connected to the remote unit 52, respectively, and the present invention is not limited thereto.

The third amplifier 5108 is configured to amplify the first transmission signal when the duplex communication apparatus 50 transmits a signal.

The fourth amplifier 5109 is configured to amplify the first received signal when the duplex communication apparatus 50 receives a signal.

Of course, the embodiment is described by taking the example of sending or receiving two signals, which does not mean that the embodiment of the present invention is limited to processing two signals, and the duplex communication apparatus 50 provided in this embodiment can process multiple signals by using the same principle by adding internal components. For example, a new near-end unit may be added, a third signal transmitted by the new near-end unit is combined with the first sending signal and the second sending signal by the first multiplexer 5101 and transmitted to the second multiplexer 5201, the third signal is a non-radio frequency signal, after the third signal is separated by the second multiplexer 5201, the third signal is frequency-adjusted by the third frequency converter to generate a third frequency-converted signal, so that the third frequency-converted signal is a radio frequency signal, and the third frequency-converted signal is amplified by the third adjustable amplifier and transmitted to the third antenna by the third duplexer, and the specific processing procedure is similar to that of the second sending signal, which is not described herein again.

In addition, optionally, the duplex communication device 50 provided in this embodiment may be applied to an FDD (frequency division duplex) technology and a TDD (time division duplex) technology.

Optionally, when applied to TDD, referring to fig. 6, the near-end unit 51 of the duplex communication apparatus 50 further includes a first time division switch 5110, and the far-end unit 52 further includes a second time division switch 5211, where the first time division switch 5110 is used to control the first multiplexer 5101 to perform uplink data transmission or downlink data transmission, and the second time division switch 5211 is used to control the second multiplexer 5201 to perform uplink data transmission or downlink data transmission.

Specifically, optionally, when FDD is used, the first duplexer 5204 and the second duplexer 5205 may be circulators, which are used to separate the transmission signal and the reception signal.

Based on the duplex communication apparatus provided in this embodiment, another embodiment of the present invention provides a duplex communication apparatus applied to a signal conditioning method, as shown in fig. 7, the duplex communication apparatus 70 includes a near-end unit 71 and a far-end unit 72, the near-end unit 71 includes a first multiplexer 7101, a clock oscillator 7102, a first digital-to-analog converter 7103, a second digital-to-analog converter 7104, a first analog-to-digital converter 7105, a second analog-to-digital converter 7106, a digital signal processor 7107, a third amplifier 7108 and a fourth adjustable amplifier 7109, and the far-end unit 72 includes a second multiplexer 7201, a first frequency converter 7202, a second frequency converter 7203, a first duplexer 7204, a second multiplexer 7205, a first antenna 7206, a second antenna 7207, a detection adjuster 7208, a first adjustable amplifier 7209 and a second amplifier 7210.

Specifically, a first transmission signal is generated by the digital signal processor 7107 and the first digital-to-analog converter 7103, a second transmission signal is generated by the digital signal processor 7107 and the second digital-to-analog converter 7104, the first transmission signal and the second transmission signal are combined into a transmission signal by the first multiplexer 7101 and transmitted to the second multiplexer 7201, the first transmission signal and the second transmission signal are separated from the second multiplexer 7201, the second transmission signal is subjected to frequency adjustment by the first frequency converter 7202 to generate a second frequency-converted signal, the frequency of the second frequency-converted signal is within the frequency band of the reception signal, the second frequency-converted signal is amplified by the detection regulator 7208 and the first adjustable amplifier 7209, the second frequency-converted signal is divided into two paths of signals, the other path of signals is directly transmitted to the second multiplexer 7201 as the first reception signal, the path of signals is amplified by the second amplifier 7210, the second frequency converter 7203 adjusts the frequency to generate a second received signal, the first received signal and the second received signal are combined by the second multiplexer 7201 and then transmitted to the first multiplexer 7101, the first multiplexer 7101 separates the first received signal and the second received signal, the first received signal is amplified by the fourth adjustable amplifier 7109 and then analog-to-digital conversion is performed on the first received signal and the second received signal to generate a first digital signal and a second digital signal, the digital signal processor 7107 is used for detecting the amplitudes of the first digital signal and the second digital signal, and the fourth adjustable amplifier 7109 is adjusted according to the amplitude difference between the first digital signal and the second digital signal, so that the amplitudes of the first received signal and the second received signal are the same after the first received signal and the second received signal are amplified by the fourth adjustable amplifier 7109, that the powers of the received uplink signals are the same.

The duplex communication device provided by the embodiment of the invention combines the first sending signal and the second sending signal into the transmission signal by acquiring the first sending signal and the second sending signal, transmits the transmission signal from the near-end unit to the far-end unit through a feeder line, separates the first sending signal and the second sending signal from the transmission signal after transmitting the transmission signal to the far-end unit, adjusts the frequency of the second sending signal to generate the second variable frequency signal, and respectively sends the first sending signal and the second variable frequency signal, so that the number of feeder lines in the communication device can be reduced, and the cost of the communication device can be reduced.

Yet another embodiment of the present invention provides a duplex communications apparatus, as illustrated with reference to fig. 8, which may be embedded in or be a microprocessor computer itself, such as: the duplex communication apparatus 8001 includes a portable device such as a general-purpose computer, a client customizing machine, a mobile phone terminal, or a tablet computer: the device includes at least one processor 8011, a memory 8012, a bus 8013, a transmitter 8014 and a receiver 8015, wherein the at least one processor 8011, the memory 8012, the transmitter 8014 and the receiver 8015 are connected via the bus 8013 and communicate with each other.

The bus 8013 may be an ISA (industry standard architecture) bus, a PCI (peripheral component interconnect) bus, an EISA (extended industry standard architecture) bus, or the like. The bus 8013 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus. Wherein:

the memory 8012 is used for executing application program code of aspects of the invention, and application program code for executing aspects of the invention is stored in the memory and controlled to be executed by the processor 8011.

The memory may be, but is not limited to, a read only memory ROM or other type of static storage device that may store static information and instructions, a random access memory RAM or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read only memory EEPROM, a compact disc CD-ROM or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. These memories are connected to the processor via a bus.

The processor 8011 may be a Central Processing Unit (CPU) 8011, or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the invention.

The processor 8011 is configured to call a program code in the memory 8012 to execute operations of the far-end unit and the near-end unit in the device embodiment corresponding to fig. 5 or fig. 6, and the device embodiment corresponding to fig. 5 or fig. 6 is specifically described, which is not described herein again.

With reference to the embodiment corresponding to fig. 1 or fig. 2, an embodiment of the present invention provides a signal sending method, which is applied to the sending device described in the embodiment corresponding to fig. 1 or fig. 2, and as shown in fig. 9, includes the following steps:

901. a first transmission signal and a second transmission signal are obtained.

The first transmission signal is a radio frequency signal, the second transmission signal is not a radio frequency signal, and the radio frequency signal is a signal with a transmission frequency. Optionally, in a specific implementation manner, the radio frequency signal is a signal having a transmission frequency after being modulated, and may be directly transmitted through an antenna. Here, the first transmission signal is a signal that can be directly transmitted through an antenna, and the second transmission signal is a signal that can be transmitted after the frequency needs to be adjusted. Further alternatively, the second transmission signal may be an intermediate frequency signal.

Optionally, the baseband signal is subjected to digital signal modulation to generate a first digital signal and a second digital signal, the first digital signal is subjected to digital-to-analog conversion to generate a first sending signal, and the second digital signal is subjected to digital-to-analog conversion to generate a second sending signal. Optionally, since the first transmission signal is a radio frequency signal, power loss in the circuit is large, and the generated first transmission signal may be amplified.

902. And combining the first sending signal and the second sending signal into a transmission signal, and transmitting the transmission signal from the near-end unit to the far-end unit through a feeder line.

Because the first transmission signal is a radio frequency signal and the second transmission signal is a non-radio frequency signal, after the two signals are combined, the two signals can be separated from the combined transmission signal, so that only one feeder line is needed for combining one transmission signal to be transmitted to the remote unit by a radio remote unit, and the number of the feeder lines of the communication equipment is reduced. Optionally, the first sending signal and the second sending signal may be combined into a transmission signal through a multiplexer.

903. After the transmission signal is transmitted to the remote unit, the first sending signal and the second sending signal are separated from the transmission signal.

Optionally, the first transmit signal and the second transmit signal may be separated in the transmission signal by a multiplexer.

904. Adjusting the frequency of the second transmit signal to generate a second frequency converted signal.

The second frequency conversion signal is a radio frequency signal.

Optionally, the frequency of the clock signal is adjusted to generate a first mixing signal, and the first mixing signal and the second transmission signal are mixed to generate a second frequency conversion signal, where the frequency of the first mixing signal is an absolute value of a difference between the frequency of the first transmission signal and the frequency of the second transmission signal. Preferably, the frequency detector may adjust a frequency of the clock signal to generate a first mixing signal, and the mixer may mix the first mixing signal with the second transmission signal to obtain a frequency of the second frequency conversion signal, which is a sum of the frequency of the first mixing signal and the frequency of the second transmission signal.

Further optionally, in step 902, the clock signal, the first sending signal, and the second sending signal may be combined into a transmission signal, and in step 903, the clock signal may be separated from the transmission signal, so as to generate the first mixing signal according to the clock signal. Preferably, the frequency of the first mixing signal may be preset.

Optionally, after the second frequency-converted signal is generated, because the power of the second transmission signal is lost in the transmission process, the second frequency-converted signal may be amplified. Preferably, the amplitude of the first transmission signal is detected, and the amplitude of the second frequency conversion signal is adjusted according to the amplitude of the first transmission signal, so that the absolute value of the difference between the amplitude of the second frequency conversion signal and the amplitude of the first transmission signal is smaller than a preset threshold. Further, in the continuous signal transmission process, the difference between the amplitude of the first sending signal and the amplitude of the second frequency conversion signal may be detected, and the amplitude of the second frequency conversion signal transmitted later may be adjusted according to the difference between the amplitude of the first sending signal and the amplitude of the second frequency conversion signal.

905. And respectively transmitting the first transmitting signal and the second frequency conversion signal.

Optionally, two duplex antennas may be used to respectively transmit the first transmit signal and the second frequency-converted signal, and the first transmit signal is transmitted through the first antenna and the second frequency-converted signal is transmitted through the second antenna. Further optionally, the first transmitting signal is transmitted to the first antenna through the first duplexer, and the second frequency-converted signal is transmitted to the second antenna through the second duplexer. Here, the first duplexer and the second duplexer may be two phase-lockers for separating the transmission signal and the reception signal.

According to the signal transmission method provided by the embodiment of the invention, the first sending signal and the second sending signal are combined into the transmission signal by acquiring the first sending signal and the second sending signal, the transmission signal is transmitted to the far-end unit from the near-end unit through a feeder line, after the transmission signal is transmitted to the far-end unit, the first sending signal and the second sending signal are separated from the transmission signal, the frequency of the second sending signal is adjusted to generate the second variable frequency signal, and the first sending signal and the second variable frequency signal are respectively transmitted, so that the number of feeder lines in communication equipment can be reduced, and the cost of the communication equipment is reduced.

With reference to the embodiment corresponding to fig. 3 or fig. 4, an embodiment of the present invention provides a signal receiving method, which is applied to the receiving apparatus described in the embodiment corresponding to fig. 3 or fig. 4, and is shown with reference to fig. 10, and includes the following steps:

1001. and receiving a first receiving signal and a second frequency conversion signal.

The first receiving signal and the second frequency-converted signal are radio frequency signals, the second frequency-converted signal is a signal generated by frequency mixing processing of the second receiving signal, the second receiving signal is a non-radio frequency signal, and the radio frequency signal is a signal with a transmitting frequency.

Optionally, the first receiving signal is received through the first antenna, and the second frequency-converted signal is received through the second antenna. Preferably, the first antenna and the second antenna are duplex antennas, the first antenna is used for receiving or transmitting the radio frequency signal which does not need to be subjected to frequency conversion processing, and the second antenna is used for transmitting or receiving the intermediate frequency signal which needs to be subjected to frequency conversion to generate the radio frequency signal.

1002. And adjusting the frequency of the second frequency-converted signal to generate a second received signal.

Optionally, the clock signal is obtained, the frequency of the clock signal is adjusted to generate a second mixing signal, and the second mixing signal and the second frequency conversion signal are mixed to generate a second receiving signal, where the frequency of the second mixing signal is an absolute value of a difference between the frequency of the first receiving signal and the frequency of the second receiving signal. Preferably, the phase detector may adjust a frequency of the clock signal to generate a second mixing signal, and the mixer may mix the second mixing signal with the second frequency conversion signal to obtain a frequency of the second receiving signal, which is a difference between the frequency of the second frequency conversion signal and the frequency of the second mixing signal. Preferably, for a duplex communication device, the clock signal may be obtained from the transmission signal combined by the transmission signals, as described in the embodiment corresponding to fig. 9 in step 904.

Further optionally, before adjusting the frequency of the second frequency-converted signal, amplitude adjustment may be performed on the second frequency-converted signal, where an absolute value of a difference between the amplitude of the second frequency-converted signal and a preset amplitude is smaller than a preset threshold. Preferably, for the duplex communication apparatus, as described in step 904 in the embodiment corresponding to fig. 9, for the radio frequency signal in the transmission signal, the amplitude of the radio frequency signal may be detected, and the amplitude of the radio frequency signal is used as a preset threshold, so as to perform amplitude adjustment on the second frequency conversion signal.

1003. The first receiving signal and the second receiving signal are combined into a transmission signal, and the transmission signal is transmitted to the near-end unit from the far-end unit through a feeder line.

Optionally, the first received signal and the second received signal may be combined into a transmission signal by a multiplexer. Because the first received signal is a radio frequency signal and the second received signal is a non-radio frequency signal, after the two signals are combined, the two signals can be separated from the combined transmission signal, so that only one feeder line is needed when the combined transmission signal is transmitted to the remote unit by a radio remote unit, and the number of the feeder lines of the communication equipment is reduced.

1004. After the transmission signal is transmitted to the near-end unit, a first receiving signal and a second receiving signal are separated from the transmission signal.

Optionally, the first received signal and the second received signal may be separated from the transmission signal by a multiplexer.

Further optionally, the first receiving signal and the second receiving signal are subjected to analog-to-digital conversion to generate a first digital signal and a second digital signal, and the first digital signal and the second digital signal are subjected to digital signal modulation to generate a baseband signal. Optionally, before the analog-to-digital conversion of the first received signal, the first received signal may be amplified.

In the signal receiving method provided by the embodiment of the present invention, the first receiving signal and the second receiving signal are received, the frequency of the second frequency-converted signal is adjusted to generate the second receiving signal, the first receiving signal and the second receiving signal are combined into the transmission signal, the transmission signal is transmitted from the remote unit to the near-end unit through a feeder, and after the transmission signal is transmitted to the near-end unit, the first receiving signal and the second receiving signal are separated from the transmission signal, so that the number of feeders in the communication device can be reduced, and the cost of the communication device can be reduced.

From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: the computer-readable medium may include RAM (random access memory), ROM (read only memory), EEPROM (electrically erasable programmable read only memory), CD-ROM (compact disc read only memory) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, DSL (digital subscriber line), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes CD (compact disc), laser disc, optical disc, DVD disc (digital versatile disc), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A transmitting device, comprising: the antenna comprises a near-end unit and a far-end unit, wherein the near-end unit comprises a combiner, and the far-end unit comprises a splitter, a frequency converter, a first antenna and a second antenna;

2. The apparatus of claim 1, wherein said remote unit further comprises a detection regulator and a first amplifier;

3. The apparatus of claim 1 or 2, wherein the near-end unit further comprises a clock oscillator;

4. The apparatus of any of claims 1-3, wherein said proximal unit further comprises a digital signal processor, a first digital-to-analog converter, and a second digital-to-analog converter;

5. The apparatus of any of claims 1-4, wherein the proximal unit further comprises a second amplifier;

the second amplifier is used for amplifying the first transmission signal.

6. A receiving device, comprising: the antenna comprises a far-end unit and a near-end unit, wherein the far-end unit comprises a combiner, a frequency converter, a first antenna and a second antenna, and the near-end unit comprises a splitter;

7. The apparatus of claim 6, wherein the remote unit further comprises a first amplifier;

8. The apparatus according to claim 6 or 7,

9. The apparatus of any of claims 6-8, wherein the proximal unit further comprises a first analog-to-digital converter, a second analog-to-digital converter, and a digital signal processor;

10. The apparatus of any of claims 6-9, wherein the proximal unit further comprises a second amplifier;

11. Duplex communication apparatus, comprising a near-end unit and a far-end unit, wherein the near-end unit comprises a first multiplexer, and the far-end unit comprises a second multiplexer, a first frequency converter, a second frequency converter, a first duplexer, a second duplexer, a first antenna and a second antenna;

or,

12. The apparatus of claim 11, wherein the remote unit further comprises a detection regulator, a first adjustable amplifier, and a second adjustable amplifier;

13. The apparatus of claim 11 or 12, wherein the near-end unit further comprises a clock oscillator;

14. The apparatus of any of claims 11-13, wherein the proximal unit further comprises a first digital-to-analog converter, a second digital-to-analog converter, a first analog-to-digital converter, a second analog-to-digital converter, and a digital signal processor;

15. The apparatus of any of claims 11-14, wherein the proximal unit further comprises a third amplifier and a fourth amplifier;

16. A signal transmission method, comprising:

17. The method of claim 16, wherein after adjusting the frequency of the second transmit signal to generate a second frequency converted signal, further comprising:

18. The method of claim 16 or 17, wherein the combining the first transmission signal and the second transmission signal into a transmission signal comprises:

19. The method of any one of claims 16-18, wherein obtaining the first transmitted signal and the second transmitted signal comprises:

20. The method of any of claims 16-19, wherein after acquiring the first transmitted signal and the second transmitted signal, further comprising:

and amplifying the first transmission signal.

21. A signal receiving method, comprising:

22. The method of claim 21, wherein after receiving the first received signal and the second converted signal, further comprising:

23. The method of claim 21 or 22, wherein said adjusting the frequency of the second frequency converted signal generates a second received signal comprising:

24. The method of any of claims 21-23, wherein after separating the first received signal and the second received signal from the transmitted signal, further comprising:

and performing digital signal demodulation on the first digital signal and the second digital signal to generate a baseband signal.

25. The method of any of claims 21-24, wherein after separating the first received signal and the second received signal from the transmitted signal, further comprising:

and amplifying the first received signal.