CN106301455A - A kind of multiple-frequency signal generates method and system - Google Patents
A kind of multiple-frequency signal generates method and system Download PDFInfo
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Abstract
The invention discloses a kind of multiple-frequency signal and generate method and system, described multiple-frequency signal is generated method and comprises the steps: to be distributed into FM radiofrequency signal by RF allotter the radiofrequency signal of multiple different frequency range；The radiofrequency signal of the plurality of different frequency range turns frequency module via FM reception and is converted into the audio signal of multiple different frequency range；Overlay area according to signal by the modulates audio signals of different frequency range to required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is amplified, and carry out closing road transmitting by multiplexer, by said method step, solving multi-band signal needs multiple transmitting equipment to carry out launching and power consumption and relatively costly problem, improves signal to noise ratio and the resource utilization of composite signal.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of multiple-frequency signal and generate method and be
System.
Background technology
Along with the high speed development of wireless communication system, 3G technology is in global multiple countries and regions
Obtaining commercialization, in the world, the research of 4G technology is in carrying out nervously.The high number of 4G technology
The wireless frequency spectrum in big broadband is needed according to rate, but, current wireless frequency spectrum resource is divided by numerous systems
Dissipate take, can monoblock utilize frequency spectrum the most rare, and exist considerable segment frequency spectrum money
Source is dispersed in each frequency range.Visible angularly investigate from environmental protection, high-performance, easy realization,
How economical and efficient ground be polymerized these discrete little frequency spectrum resources just become must faced by core ask
Topic, wireless audio signal transmitting-receiving, the transmitting-receiving of existing wireless audio signal is only capable of should man-to-man nothing
Line audio transmission, therefore it provides a kind of can the wireless sound of one-to-many transmitted in both directions audio signal
Frequently receive-transmit system is the target that current pole need to be made great efforts.
Summary of the invention
In view of current audio signal transmits above shortcomings, the present invention provides a kind of multifrequency letter
Number generate method and system, solve multi-band signal need multiple transmitting equipment to carry out launching and
Power consumption and relatively costly problem, improve signal to noise ratio and the resource utilization of composite signal.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
A kind of multiple-frequency signal generates method, and described multiple-frequency signal generates method and comprises the steps:
FM radiofrequency signal is distributed into by RF allotter the radiofrequency signal of multiple different frequency range；
The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；
Overlay area according to signal by the modulates audio signals of different frequency range to required carrier wave
Frequency；
The power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through multiplexer
Carry out closing road to launch.
According to one aspect of the present invention, described FM radiofrequency signal is distributed by RF allotter
The radiofrequency signal step becoming multiple different frequency range performs following steps before performing: penetrate the FM received
Frequently the wave frequency of signal is analyzed obtaining the multifrequency frequency range of FM radiofrequency signal.
According to one aspect of the present invention, described FM radiofrequency signal is distributed by RF allotter
The radiofrequency signal becoming multiple different frequency range performs following steps after performing: penetrate each frequency range respectively
Frequently signal carries out pre-corrected, to keep the energy balance of each frequency range radiofrequency signal.
According to one aspect of the present invention, the described overlay area according to signal is by different frequency range
Modulates audio signals performs following steps before performing to required carrier frequency point step: to audio frequency
Signal carries out coded treatment and obtains voice data, and voice data is converted into radiofrequency signal.
According to one aspect of the present invention, the described overlay area according to signal is by different frequency range
Modulates audio signals is to required carrier frequency point step particularly as follows: determine by signal coverage areas
The rf frequency of the audio signal of different frequency range；To the rf frequency of each audio signal according to connecing
Radio reception matter definition is numbered；Rf frequency according to audio signal is adjusted with rf frequency numbering
The overlay area making signal can receive the radio-frequency carrier frequency of signal.
According to one aspect of the present invention, the described carrier being frequency modulated by the audio signal after modulation
Power is amplified, and carries out closing road step of transmitting by multiplexer particularly as follows: calculate audio frequency and believe
Number from signal launch point arriving signal overlay area distance；Determine and audio signal is transmitted into signal
Carrier being frequency modulated power required for overlay area；It is amplified to the carrier being frequency modulated of audio signal specify
Power；Multiple audio signals of different frequency range are carried out closes road and processes generation multi-frequency-band emission signal.
A kind of multiple-frequency signal generates system, and described multiple-frequency signal generates system and includes:
Signal distribution module, for being distributed into multiple difference by FM radiofrequency signal by RF allotter
The radiofrequency signal of frequency range；
Turning frequency module, the radiofrequency signal for the plurality of different frequency range receives a turn frequency mould via FM
Block is converted into the audio signal of multiple different frequency range；
Signal modulation module, adjusts the audio signal of different frequency range for the overlay area according to signal
System is to required carrier frequency point；
Power amplifier module, for carrying out the power of the carrier being frequency modulated of the audio signal after modulation
Amplify, and carry out closing road transmitting by multiplexer.
According to one aspect of the present invention, described multiple-frequency signal generates system and also includes: analyze mould
Block, for being analyzed acquisition FM radio frequency letter to the wave frequency of the FM radiofrequency signal received
Number multifrequency frequency range.
According to one aspect of the present invention, described multiple-frequency signal generates system and also includes: revise mould
Block, for carrying out pre-corrected to the radiofrequency signal of each frequency range respectively, to keep each frequency range radio frequency
The energy balance of signal.
According to one aspect of the present invention, described multiple-frequency signal generates system and also includes: at audio frequency
Reason module, obtains voice data for processing coding audio signal, is turned by voice data
Change radiofrequency signal into.
The advantage that the present invention implements: by FM radiofrequency signal is distributed into multiple by RF allotter
The radiofrequency signal of different frequency range；The radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency
Module is converted into the audio signal of multiple different frequency range；Overlay area according to signal is by different frequency range
Modulates audio signals to required carrier frequency point；Carrier being frequency modulated by the audio signal after modulation
Power be amplified, and carry out closing road by multiplexer and launch, by said method step, solve
Multi-band signal of having determined needs multiple transmitting equipment to carry out launching and power consumption and relatively costly problem,
Improve signal to noise ratio and the resource utilization of composite signal.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to embodiment
The accompanying drawing used required in is briefly described, it should be apparent that, the accompanying drawing in describing below
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method stream that a kind of multiple-frequency signal of the present invention generates the embodiment 1 of method
Cheng Tu；
Fig. 2 is the method stream that a kind of multiple-frequency signal of the present invention generates the embodiment 2 of method
Cheng Tu；
Fig. 3 is the method stream that a kind of multiple-frequency signal of the present invention generates the embodiment 3 of method
Cheng Tu；
Fig. 4 is the method stream that a kind of multiple-frequency signal of the present invention generates the embodiment 4 of method
Cheng Tu；
Fig. 5 is the structural representation that a kind of multiple-frequency signal of the present invention generates system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment rather than whole embodiments.Based on the embodiment in the present invention, this area is general
The every other embodiment that logical technical staff is obtained under not making creative work premise,
Broadly fall into the scope of protection of the invention.
Embodiment 1:
As it is shown in figure 1, a kind of multiple-frequency signal generates method, described multiple-frequency signal generates method bag
Include following steps:
Step S1: FM radiofrequency signal is distributed into by RF allotter the radio frequency of multiple different frequency range
Signal；
In order to aloft propagate broadcast television signal, it is necessary to broadcast television signal is modulated into height
Frequency or radiofrequency signal, each signal takies a channel, so could propagate multichannel the most simultaneously
Broadcast TV program is without causing confusion.The region that radiofrequency signal is covered is different, radiofrequency signal
The radio frequency signal frequency received can be different with radio-frequency carrier point, and needs are covered according to radiofrequency signal
Region carries out radio frequency band distribution to the multiple-frequency signal of broadcast television signal；The radiofrequency signal distributed
The region that frequency range correspondence broadcast television signal is to be covered.
Step S2: the radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency module conversion
Become the audio signal of multiple different frequency range；
To the broadcast television signal of radiofrequency signal institute overlay area be assigned with different radio frequency frequency range after,
Need the audio signal in the broadcast television signal in respective radio-frequency frequency range is demodulated.
Every road FM transmission unit can turn to take place frequently to be penetrated, and meets and inputs the conversion of arbitrary frequency FM signal
The arbitrary frequency FM signal becoming different is launched.
Step S3: according to the overlay area of signal by the modulates audio signals of different frequency range to required
Carrier frequency point；
Described step S3: according to the overlay area of signal by the modulates audio signals of different frequency range to institute
The carrier frequency point step needed particularly as follows: determined the audio signal of different frequency range by signal coverage areas
Rf frequency；The rf frequency of each audio signal is compiled according to receiving sound clarity degree
Number；Rf frequency according to audio signal and rf frequency numbering are modulated into the overlay area of signal can
Receive the radio-frequency carrier frequency of signal.
By the modulates audio signals of different frequency range to required carrier frequency point, radio and television can be made to save
The tonequality of the radiofrequency signal of mesh audio frequency is more melodious, and frequency spectrum is purer, ultralow harmonic wave and spurious signal,
Enhance the strong anti-interference performance to TDMA burst noise, and high PSRR be provided,
Can more efficiently suppress noise, have high s/n ratio (66dB), ultra-low-distortion (0.03%THD),
High separation (43dB) and superior sensitivity (being better than 1.2 μ VEMF).
Step S4: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through
Multiplexer carries out closing road and launches；
Described step S4: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and
Carry out closing road step of transmitting by multiplexer particularly as follows: calculate audio signal and arrive from signal launch point
Signal coverage areas distance；Determine and audio signal is transmitted into the frequency modulation required for signal coverage areas
Carrier power；It is amplified to the carrier being frequency modulated of audio signal specify power；Multiple by different frequency range
Audio signal carries out closing road and processes generation multi-frequency-band emission signal.
Carrier being frequency modulated for each radiofrequency signal uses independent power amplifier module to carry out power
Amplify, greatly reduce the interference between carrier wave, improve the linearity of signal.
By the radio frequency that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is believed
Number；The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；Overlay area according to signal is by the modulates audio signals of different frequency range
To required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is put
Greatly, and carry out closing road transmitting by multiplexer, by said method step, solve multiband
Signal demand multiple transmitting equipment carries out launching and power consumption and relatively costly problem, improves conjunction
Become signal to noise ratio and the resource utilization of signal.
Embodiment 2:
As in figure 2 it is shown, a kind of multiple-frequency signal generates method, described multiple-frequency signal generates method bag
Include following steps:
Step S1: the wave frequency of FM radiofrequency signal received is analyzed obtains FM and penetrates
Frequently the multifrequency frequency range of signal；
Step S2: FM radiofrequency signal is distributed into by RF allotter the radio frequency of multiple different frequency range
Signal；
In order to aloft propagate broadcast television signal, it is necessary to broadcast television signal is modulated into height
Frequency or radiofrequency signal, each signal takies a channel, so could propagate multichannel the most simultaneously
Broadcast TV program is without causing confusion.The region that radiofrequency signal is covered is different, radiofrequency signal
The radio frequency signal frequency received can be different with radio-frequency carrier point, and needs are covered according to radiofrequency signal
Region carries out radio frequency band distribution to the multiple-frequency signal of broadcast television signal；The radiofrequency signal distributed
The region that frequency range correspondence broadcast television signal is to be covered.
Step S3: the radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency module conversion
Become the audio signal of multiple different frequency range；
To the broadcast television signal of radiofrequency signal institute overlay area be assigned with different radio frequency frequency range after,
Need the audio signal in the broadcast television signal in respective radio-frequency frequency range is demodulated.
Step S4: according to the overlay area of signal by the modulates audio signals of different frequency range to required
Carrier frequency point；
Described step S4: according to the overlay area of signal by the modulates audio signals of different frequency range to institute
The carrier frequency point step needed particularly as follows: determined the audio signal of different frequency range by signal coverage areas
Rf frequency；The rf frequency of each audio signal is compiled according to receiving sound clarity degree
Number；Rf frequency according to audio signal and rf frequency numbering are modulated into the overlay area of signal can
Receive the radio-frequency carrier frequency of signal.
By the modulates audio signals of different frequency range to required carrier frequency point, radio and television can be made to save
The tonequality of the radiofrequency signal of mesh audio frequency is more melodious, and frequency spectrum is purer, ultralow harmonic wave and spurious signal,
Enhance the strong anti-interference performance to TDMA burst noise, and high PSRR be provided,
Can more efficiently suppress noise, have high s/n ratio (66dB), ultra-low-distortion (0.03%THD),
High separation (43dB) and superior sensitivity (being better than 1.2 μ VEMF).
Step S5: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through
Multiplexer carries out closing road and launches；
Described step S5: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and
Carry out closing road step of transmitting by multiplexer particularly as follows: calculate audio signal and arrive from signal launch point
Signal coverage areas distance；Determine and audio signal is transmitted into the frequency modulation required for signal coverage areas
Carrier power；It is amplified to the carrier being frequency modulated of audio signal specify power；Multiple by different frequency range
Audio signal carries out closing road and processes generation multi-frequency-band emission signal.
Carrier being frequency modulated for each radiofrequency signal uses independent power amplifier module to carry out power
Amplify, greatly reduce the interference between carrier wave, improve the linearity of signal.
By the radio frequency that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is believed
Number；The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；Overlay area according to signal is by the modulates audio signals of different frequency range
To required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is put
Greatly, and carry out closing road transmitting by multiplexer, by said method step, solve multiband
Signal demand multiple transmitting equipment carries out launching and power consumption and relatively costly problem, improves conjunction
Become signal to noise ratio and the resource utilization of signal.
Embodiment 3:
As it is shown on figure 3, a kind of multiple-frequency signal generates method, described multiple-frequency signal generates method bag
Include following steps:
Step S1: the wave frequency of FM radiofrequency signal received is analyzed obtains FM and penetrates
Frequently the multifrequency frequency range of signal；
Step S2: FM radiofrequency signal is distributed into by RF allotter the radio frequency of multiple different frequency range
Signal；
In order to aloft propagate broadcast television signal, it is necessary to broadcast television signal is modulated into height
Frequency or radiofrequency signal, each signal takies a channel, so could propagate multichannel the most simultaneously
Broadcast TV program is without causing confusion.The region that radiofrequency signal is covered is different, radiofrequency signal
The radio frequency signal frequency received can be different with radio-frequency carrier point, and needs are covered according to radiofrequency signal
Region carries out radio frequency band distribution to the multiple-frequency signal of broadcast television signal；The radiofrequency signal distributed
The region that frequency range correspondence broadcast television signal is to be covered.
Step S3: respectively the radiofrequency signal of each frequency range is carried out pre-corrected, to keep each frequency range to penetrate
Frequently the energy balance of signal；
When multiple-frequency signal is turned by RF allotter and reception the passage of frequency module composition, in order to protect
Demonstrate,prove the energy balance of radiofrequency signal in three passages, need every passage in these three passages
Signal energy carries out pre-corrected, and three road signal outputs to be alignd in time, so can ensure each road
The phase equalization of signal.
Step S4: the radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency module conversion
Become the audio signal of multiple different frequency range；
To the broadcast television signal of radiofrequency signal institute overlay area be assigned with different radio frequency frequency range after,
Need the audio signal in the broadcast television signal in respective radio-frequency frequency range is demodulated.
Step S5: according to the overlay area of signal by the modulates audio signals of different frequency range to required
Carrier frequency point；
Described step S5: according to the overlay area of signal by the modulates audio signals of different frequency range to institute
The carrier frequency point step needed particularly as follows: determined the audio signal of different frequency range by signal coverage areas
Rf frequency；The rf frequency of each audio signal is compiled according to receiving sound clarity degree
Number；Rf frequency according to audio signal and rf frequency numbering are modulated into the overlay area of signal can
Receive the radio-frequency carrier frequency of signal.
By the modulates audio signals of different frequency range to required carrier frequency point, radio and television can be made to save
The tonequality of the radiofrequency signal of mesh audio frequency is more melodious, and frequency spectrum is purer, ultralow harmonic wave and spurious signal,
Enhance the strong anti-interference performance to TDMA burst noise, and high PSRR be provided,
Can more efficiently suppress noise, have high s/n ratio (66dB), ultra-low-distortion (0.03%THD),
High separation (43dB) and superior sensitivity (being better than 1.2 μ VEMF).
Step S6: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through
Multiplexer carries out closing road and launches；
Described step S6: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and
Carry out closing road step of transmitting by multiplexer particularly as follows: calculate audio signal and arrive from signal launch point
Signal coverage areas distance；Determine and audio signal is transmitted into the frequency modulation required for signal coverage areas
Carrier power；It is amplified to the carrier being frequency modulated of audio signal specify power；Multiple by different frequency range
Audio signal carries out closing road and processes generation multi-frequency-band emission signal.
Carrier being frequency modulated for each radiofrequency signal uses independent power amplifier module to carry out power
Amplify, greatly reduce the interference between carrier wave, improve the linearity of signal.
By the radio frequency that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is believed
Number；The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；Overlay area according to signal is by the modulates audio signals of different frequency range
To required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is put
Greatly, and carry out closing road transmitting by multiplexer, by said method step, solve multiband
Signal demand multiple transmitting equipment carries out launching and power consumption and relatively costly problem, improves conjunction
Become signal to noise ratio and the resource utilization of signal.
Embodiment 3:
As shown in Figure 4, a kind of multiple-frequency signal generates method, and described multiple-frequency signal generates method bag
Include following steps:
Step S1: the wave frequency of FM radiofrequency signal received is analyzed obtains FM and penetrates
Frequently the multifrequency frequency range of signal；
Step S2: FM radiofrequency signal is distributed into by RF allotter the radio frequency of multiple different frequency range
Signal；
In order to aloft propagate broadcast television signal, it is necessary to broadcast television signal is modulated into height
Frequency or radiofrequency signal, each signal takies a channel, so could propagate multichannel the most simultaneously
Broadcast TV program is without causing confusion.The region that radiofrequency signal is covered is different, radiofrequency signal
The radio frequency signal frequency received can be different with radio-frequency carrier point, and needs are covered according to radiofrequency signal
Region carries out radio frequency band distribution to the multiple-frequency signal of broadcast television signal；The radiofrequency signal distributed
The region that frequency range correspondence broadcast television signal is to be covered.
Step S3: respectively the radiofrequency signal of each frequency range is carried out pre-corrected, to keep each frequency range to penetrate
Frequently the energy balance of signal；
When multiple-frequency signal is turned by RF allotter and reception the passage of frequency module composition, in order to protect
Demonstrate,prove the energy balance of radiofrequency signal in three passages, need every passage in these three passages
Signal energy carries out pre-corrected, and three road signal outputs to be alignd in time, so can ensure each road
The phase equalization of signal.
Step S4: the radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency module conversion
Become the audio signal of multiple different frequency range；
To the broadcast television signal of radiofrequency signal institute overlay area be assigned with different radio frequency frequency range after,
Need the audio signal in the broadcast television signal in respective radio-frequency frequency range is demodulated.
Step S5: according to the overlay area of signal by the modulates audio signals of different frequency range to required
Carrier frequency point；
Described step S5: according to the overlay area of signal by the modulates audio signals of different frequency range to institute
The carrier frequency point step needed particularly as follows: determined the audio signal of different frequency range by signal coverage areas
Rf frequency；The rf frequency of each audio signal is compiled according to receiving sound clarity degree
Number；Rf frequency according to audio signal and rf frequency numbering are modulated into the overlay area of signal can
Receive the radio-frequency carrier frequency of signal.
By the modulates audio signals of different frequency range to required carrier frequency point, radio and television can be made to save
The tonequality of the radiofrequency signal of mesh audio frequency is more melodious, and frequency spectrum is purer, ultralow harmonic wave and spurious signal,
Enhance the strong anti-interference performance to TDMA burst noise, and high PSRR be provided,
Can more efficiently suppress noise, have high s/n ratio (66dB), ultra-low-distortion (0.03%THD),
High separation (43dB) and superior sensitivity (being better than 1.2 μ VEMF).
Step S6: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through
Multiplexer carries out closing road and launches；
Described step S6: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and
Carry out closing road step of transmitting by multiplexer particularly as follows: calculate audio signal and arrive from signal launch point
Signal coverage areas distance；Determine and audio signal is transmitted into the frequency modulation required for signal coverage areas
Carrier power；It is amplified to the carrier being frequency modulated of audio signal specify power；Multiple by different frequency range
Audio signal carries out closing road and processes generation multi-frequency-band emission signal.
Carrier being frequency modulated for each radiofrequency signal uses independent power amplifier module to carry out power
Amplify, greatly reduce the interference between carrier wave, improve the linearity of signal.
By the radio frequency that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is believed
Number；The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；Overlay area according to signal is by the modulates audio signals of different frequency range
To required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is put
Greatly, and carry out closing road transmitting by multiplexer, by said method step, solve multiband
Signal demand multiple transmitting equipment carries out launching and power consumption and relatively costly problem, improves conjunction
Become signal to noise ratio and the resource utilization of signal.
Embodiment 4:
As it is shown on figure 3, a kind of multiple-frequency signal generates method, described multiple-frequency signal generates method bag
Include following steps:
Step S1: the wave frequency of FM radiofrequency signal received is analyzed obtains FM and penetrates
Frequently the multifrequency frequency range of signal；
Step S2: FM radiofrequency signal is distributed into by RF allotter the radio frequency of multiple different frequency range
Signal；
In order to aloft propagate broadcast television signal, it is necessary to broadcast television signal is modulated into height
Frequency or radiofrequency signal, each signal takies a channel, so could propagate multichannel the most simultaneously
Broadcast TV program is without causing confusion.The region that radiofrequency signal is covered is different, radiofrequency signal
The radio frequency signal frequency received can be different with radio-frequency carrier point, and needs are covered according to radiofrequency signal
Region carries out radio frequency band distribution to the multiple-frequency signal of broadcast television signal；The radiofrequency signal distributed
The region that frequency range correspondence broadcast television signal is to be covered.
Step S3: respectively the radiofrequency signal of each frequency range is carried out pre-corrected, to keep each frequency range to penetrate
Frequently the energy balance of signal；
When multiple-frequency signal is turned by RF allotter and reception the passage of frequency module composition, in order to protect
Demonstrate,prove the energy balance of radiofrequency signal in three passages, need every passage in these three passages
Signal energy carries out pre-corrected, and three road signal outputs to be alignd in time, so can ensure each road
The phase equalization of signal.
Step S4: the radiofrequency signal of the plurality of different frequency range receives via FM and turns frequency module conversion
Become the audio signal of multiple different frequency range；
To the broadcast television signal of radiofrequency signal institute overlay area be assigned with different radio frequency frequency range after,
Need the audio signal in the broadcast television signal in respective radio-frequency frequency range is demodulated.
Step S5: coding audio signal is processed and obtains voice data, voice data is turned
Change radiofrequency signal into；
Step S6: according to the overlay area of signal by the modulates audio signals of different frequency range to required
Carrier frequency point；
Described step S6: according to the overlay area of signal by the modulates audio signals of different frequency range to institute
The carrier frequency point step needed particularly as follows: determined the audio signal of different frequency range by signal coverage areas
Rf frequency；The rf frequency of each audio signal is compiled according to receiving sound clarity degree
Number；Rf frequency according to audio signal and rf frequency numbering are modulated into the overlay area of signal can
Receive the radio-frequency carrier frequency of signal.
By the modulates audio signals of different frequency range to required carrier frequency point, radio and television can be made to save
The tonequality of the radiofrequency signal of mesh audio frequency is more melodious, and frequency spectrum is purer, ultralow harmonic wave and spurious signal,
Enhance the strong anti-interference performance to TDMA burst noise, and high PSRR be provided,
Can more efficiently suppress noise, have high s/n ratio (66dB), ultra-low-distortion (0.03%THD),
High separation (43dB) and superior sensitivity (being better than 1.2 μ VEMF).
Step S7: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and passes through
Multiplexer carries out closing road and launches；
Described step S7: the power of the carrier being frequency modulated of the audio signal after modulation is amplified, and
Carry out closing road step of transmitting by multiplexer particularly as follows: calculate audio signal and arrive from signal launch point
Signal coverage areas distance；Determine and audio signal is transmitted into the frequency modulation required for signal coverage areas
Carrier power；It is amplified to the carrier being frequency modulated of audio signal specify power；Multiple by different frequency range
Audio signal carries out closing road and processes generation multi-frequency-band emission signal.
Carrier being frequency modulated for each radiofrequency signal uses independent power amplifier module to carry out power
Amplify, greatly reduce the interference between carrier wave, improve the linearity of signal.
By the radio frequency that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is believed
Number；The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；Overlay area according to signal is by the modulates audio signals of different frequency range
To required carrier frequency point；The power of the carrier being frequency modulated of the audio signal after modulation is put
Greatly, and carry out closing road transmitting by multiplexer, by said method step, solve multiband
Signal demand multiple transmitting equipment carries out launching and power consumption and relatively costly problem, improves conjunction
Become signal to noise ratio and the resource utilization of signal.
A kind of embodiment of multiple-frequency signal generation system:
A kind of multiple-frequency signal generates system, and described multiple-frequency signal generates system and includes:
Signal distribution module 1, for by FM radiofrequency signal by RF allotter be distributed into multiple not
Radiofrequency signal with frequency range；
Turning frequency module 2, the radiofrequency signal for the plurality of different frequency range receives a turn frequency mould via FM
Block is converted into the audio signal of multiple different frequency range；
Signal modulation module 3, is used for the overlay area according to signal by the audio signal of different frequency range
Modulation is to required carrier frequency point；
Power amplifier module 4, for carrying out the power of the carrier being frequency modulated of the audio signal after modulation
Amplify, and carry out closing road transmitting by multiplexer.
In the present embodiment, multiple-frequency signal generates system and also includes: analysis module 5, is used for docking
The wave frequency of the FM radiofrequency signal received is analyzed obtaining the multifrequency frequency range of FM radiofrequency signal.
In the present embodiment, multiple-frequency signal generates system and also includes: correcting module 6, for respectively
The radiofrequency signal of each frequency range is carried out pre-corrected, to keep the energy of each frequency range radiofrequency signal to put down
Weighing apparatus.
In the present embodiment, multiple-frequency signal generates system and also includes: audio processing modules 7, is used for
Coding audio signal is processed and obtains voice data, voice data is converted into radiofrequency signal.
The advantage that the present invention implements: by FM radiofrequency signal is distributed into many by RF allotter
The radiofrequency signal of individual different frequency range；The radiofrequency signal of the plurality of different frequency range receives via FM and turns
Frequency module is converted into the audio signal of multiple different frequency range；Overlay area according to signal is by difference
The modulates audio signals of frequency range is to required carrier frequency point；Tune by the audio signal after modulation
Frequently the power of carrier wave is amplified, and carries out closing road transmitting by multiplexer, passes through said method
Step, solve multi-band signal need multiple transmitting equipment to carry out launching and power consumption and cost relatively
High problem, improves signal to noise ratio and the resource utilization of composite signal.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those skilled in the art is at technology model disclosed by the invention
In enclosing, the change that can readily occur in or replacement, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (10)
1. a multiple-frequency signal generates method, it is characterised in that described multiple-frequency signal generates method
Comprise the steps:
FM radiofrequency signal is distributed into by RF allotter the radiofrequency signal of multiple different frequency range；
The radiofrequency signal of the plurality of different frequency range via FM receive turn frequency module be converted into multiple not
Audio signal with frequency range；
Overlay area according to signal by the modulates audio signals of different frequency range to required carrier wave
Frequency；
The power of the carrier being frequency modulated of the audio signal after modulation is amplified, and is entered by multiplexer
Hang He road is launched.
Multiple-frequency signal the most according to claim 1 generates method, it is characterised in that described
The radiofrequency signal step that FM radiofrequency signal is distributed into multiple different frequency range by RF allotter is held
Following steps are performed: be analyzed obtaining to the wave frequency of the FM radiofrequency signal received before row
The multifrequency frequency range of FM radiofrequency signal.
Multiple-frequency signal the most according to claim 1 generates method, it is characterised in that described
After FM radiofrequency signal is distributed into by RF allotter the radiofrequency signal execution of multiple different frequency range
Perform following steps: respectively the radiofrequency signal of each frequency range is carried out pre-corrected, to keep each frequency range
The energy balance of radiofrequency signal.
Multiple-frequency signal the most according to claim 1 generates method, it is characterised in that described
Overlay area according to signal by the modulates audio signals of different frequency range to required carrier frequency point
Step performs following steps before performing: process coding audio signal and obtain voice data,
Voice data is converted into radiofrequency signal.
5. generating method according to the multiple-frequency signal one of Claims 1-4 Suo Shu, its feature exists
In, the described overlay area according to signal by the modulates audio signals of different frequency range to required
Carrier frequency point step particularly as follows: determined penetrating of the audio signal of different frequency range by signal coverage areas
Again and again rate；The rf frequency of each audio signal is numbered according to receiving sound clarity degree；
The overlay area that rf frequency according to audio signal is modulated into signal with rf frequency numbering can be received
Radio-frequency carrier frequency to signal.
Multiple-frequency signal the most according to claim 1 generates method, it is characterised in that described
The power of the carrier being frequency modulated of the audio signal after modulation is amplified, and is closed by multiplexer
Road step of transmitting particularly as follows: calculate audio signal from signal launch point arriving signal overlay area away from
From；Determine carrier being frequency modulated power audio signal being transmitted into required for signal coverage areas；By sound
Frequently the carrier being frequency modulated of signal is amplified to specify power；Multiple audio signals of different frequency range are closed
Road processes and generates multi-frequency-band emission signal.
7. a multiple-frequency signal generates system, it is characterised in that described multiple-frequency signal generates system
Including:
Signal distribution module, for being distributed into multiple difference by FM radiofrequency signal by RF allotter
The radiofrequency signal of frequency range；
Turning frequency module, the radiofrequency signal for the plurality of different frequency range receives a turn frequency mould via FM
Block is converted into the audio signal of multiple different frequency range；
Signal modulation module, adjusts the audio signal of different frequency range for the overlay area according to signal
System is to required carrier frequency point；
Power amplifier module, for putting the power of the carrier being frequency modulated of the audio signal after modulation
Greatly, and carry out closing road by multiplexer to launch.
Multiple-frequency signal the most according to claim 7 generates system, it is characterised in that described
Multiple-frequency signal generates system and also includes: analyze module, for the electricity to the FM radiofrequency signal received
Magnetic wave frequency is analyzed obtaining the multifrequency frequency range of FM radiofrequency signal.
Multiple-frequency signal the most according to claim 8 generates system, it is characterised in that described
Multiple-frequency signal generates system and also includes: correcting module, is used for the radiofrequency signal respectively to each frequency range
Carry out pre-corrected, to keep the energy balance of each frequency range radiofrequency signal.
10. generate system, its feature according to the multiple-frequency signal one of claim 7 to 9 Suo Shu
Being, described multiple-frequency signal generates system and also includes: audio processing modules, for believing audio frequency
Number carrying out coded treatment obtains voice data, and voice data is converted into radiofrequency signal.
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| CN107610710A (en) * | 2017-09-29 | 2018-01-19 | 武汉大学 | A kind of audio coding and coding/decoding method towards Multi-audio-frequency object |
| CN112152662A (en) * | 2020-08-26 | 2020-12-29 | 南京云天致信信息科技有限公司 | Frequency hopping communication system and communication method for multi-frequency transmission |
| CN113490187A (en) * | 2020-03-16 | 2021-10-08 | 维沃移动通信有限公司 | Audio transmission method and electronic equipment |
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