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ZA9410128B - Direct conversion CDMA receiver - Google Patents

Direct conversion CDMA receiver

Info

Publication number
ZA9410128B
ZA9410128B ZA9410128A ZA9410128A ZA9410128B ZA 9410128 B ZA9410128 B ZA 9410128B ZA 9410128 A ZA9410128 A ZA 9410128A ZA 9410128 A ZA9410128 A ZA 9410128A ZA 9410128 B ZA9410128 B ZA 9410128B
Authority
ZA
South Africa
Prior art keywords
direct conversion
cdma receiver
conversion cdma
receiver
direct
Prior art date
Application number
ZA9410128A
Inventor
Christoff Karl Pauw
Original Assignee
Csir
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Csir filed Critical Csir
Publication of ZA9410128B publication Critical patent/ZA9410128B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
ZA9410128A 1993-12-20 1994-12-20 Direct conversion CDMA receiver ZA9410128B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA939524 1993-12-20

Publications (1)

Publication Number Publication Date
ZA9410128B true ZA9410128B (en) 1995-08-25

Family

ID=25583533

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9410128A ZA9410128B (en) 1993-12-20 1994-12-20 Direct conversion CDMA receiver

Country Status (3)

Country Link
AU (1) AU1276795A (en)
WO (1) WO1995017785A1 (en)
ZA (1) ZA9410128B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301739A (en) * 1995-06-02 1996-12-11 Dsc Communications Synchronizing a Transmitter in a Subscriber Terminal in a Wireless Communications System
US5742595A (en) * 1995-06-02 1998-04-21 Dsc Communications Corporation Processing CDMA signals
GB2301752B (en) * 1995-06-02 2000-03-29 Dsc Communications Control message transmission in telecommunications systems
US5809093A (en) * 1995-06-02 1998-09-15 Dsc Communications Corporation Apparatus and method of frame aligning information in a wireless telecommunications system
GB2337861B (en) * 1995-06-02 2000-02-23 Dsc Communications Integrated directional antenna
US5696766A (en) * 1995-06-02 1997-12-09 Dsc Communications Corporation Apparatus and method of synchronizing a transmitter in a subscriber terminal of a wireless telecommunications system
US5745496A (en) * 1995-06-02 1998-04-28 Dsc Communications Corporation Apparatus and method of establishing a downlink communication path in a wireless telecommunications system
GB2301735B (en) * 1995-06-02 1999-07-28 Dsc Communications Message handling in a telecommunications network
GB2301717B (en) * 1995-06-02 1999-08-11 Dsc Communications Network controller for monitoring the status of a network
US5915216A (en) * 1995-06-02 1999-06-22 Dsc Communications Corporation Apparatus and method of transmitting and receiving information in a wireless telecommunications system
AU7574598A (en) * 1997-05-22 1998-12-11 Spectraplex, Inc. Method and system for communicating digital data by simultaneously code divisionmultiple accessing a plurality of channels
US6775530B2 (en) * 2001-11-27 2004-08-10 Qualcomm Inc. Direct conversion of narrow-band RF signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484335A (en) * 1982-10-14 1984-11-20 E-Systems, Inc. Method and apparatus for despreading a spread spectrum signal at baseband
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
FR2681199B1 (en) * 1991-09-11 1993-12-03 Agence Spatiale Europeenne METHOD AND DEVICE FOR MULTIPLEXING DATA SIGNALS.

Also Published As

Publication number Publication date
WO1995017785A1 (en) 1995-06-29
AU1276795A (en) 1995-07-10

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