DK0594551T3 - Bidirektionel demodulationsfremgangsmåde og -apparat - Google Patents

Bidirektionel demodulationsfremgangsmåde og -apparat

Info

Publication number
DK0594551T3
DK0594551T3 DK93850197T DK93850197T DK0594551T3 DK 0594551 T3 DK0594551 T3 DK 0594551T3 DK 93850197 T DK93850197 T DK 93850197T DK 93850197 T DK93850197 T DK 93850197T DK 0594551 T3 DK0594551 T3 DK 0594551T3
Authority
DK
Denmark
Prior art keywords
data symbols
unknown
demodulated
stored
received
Prior art date
Application number
DK93850197T
Other languages
English (en)
Inventor
Paul W Dent
Sandeep Chennakeshu
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DK0594551T3 publication Critical patent/DK0594551T3/da

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
    • H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
    • H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03535—Variable structures
    • H04L2025/03547—Switching between time domain structures
    • H04L2025/0356—Switching the time direction of equalisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Telephone Function (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Transmission System (AREA)
  • Selective Calling Equipment (AREA)
DK93850197T 1992-10-22 1993-10-19 Bidirektionel demodulationsfremgangsmåde og -apparat DK0594551T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/965,848 US5335250A (en) 1992-10-22 1992-10-22 Method and apparatus for bidirectional demodulation of digitally modulated signals

Publications (1)

Publication Number Publication Date
DK0594551T3 true DK0594551T3 (da) 2002-03-11

Family

ID=25510587

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93850197T DK0594551T3 (da) 1992-10-22 1993-10-19 Bidirektionel demodulationsfremgangsmåde og -apparat

Country Status (13)

Country Link
US (1) US5335250A (da)
EP (1) EP0594551B1 (da)
CN (1) CN1070667C (da)
AT (1) ATE213372T1 (da)
AU (1) AU5446394A (da)
DE (1) DE69331571T2 (da)
DK (1) DK0594551T3 (da)
ES (1) ES2168272T3 (da)
MY (1) MY110069A (da)
PH (1) PH31516A (da)
SG (1) SG43305A1 (da)
TW (1) TW266364B (da)
WO (1) WO1994009582A1 (da)

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US6185259B1 (en) 1996-06-12 2001-02-06 Ericsson Inc. Transmitter/receiver for GMSK and offset-QAM
KR100223735B1 (ko) * 1996-06-29 1999-10-15 김영환 비터비 복호 신호의 동기/비동기 판단 방법 및 장치
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FR2751815B1 (fr) * 1996-07-24 1998-10-02 Matra Communication Procede de demodulation numerique d'un segment de signal
FR2751811B1 (fr) * 1996-07-24 1998-10-09 Matra Communication Procede de demodulation numerique
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SE512008C2 (sv) * 1997-09-19 2000-01-10 Ericsson Telefon Ab L M Förfarande och arrangemang för demodulering av datasymboler
US6084926A (en) * 1997-12-08 2000-07-04 Ericsson Inc. Method and system for demodulating radio signals
US6282181B1 (en) 1998-04-24 2001-08-28 Ericsson Inc Pseudorandom number sequence generation in radiocommunication systems
AU3903099A (en) * 1998-05-15 1999-12-06 Ericsson Inc. Signal decoding with or without second synchronization word in a mobile communication system
US6205183B1 (en) 1998-05-29 2001-03-20 Ericsson Inc. Methods of suppressing reference oscillator harmonic interference and related receivers
US6038262A (en) * 1998-06-09 2000-03-14 Transcendata, Inc. Method and apparatus for compensation of electro-magnetic distortion using weighted feedback delay for amplitude coded sinusoidal waveform generation and transmission
US6567475B1 (en) 1998-12-29 2003-05-20 Ericsson Inc. Method and system for the transmission, reception and processing of 4-level and 8-level signaling symbols
US6507602B1 (en) 1999-01-07 2003-01-14 Ericsson, Inc. Smoothing receiver channel estimates using spectral estimation
US7783299B2 (en) 1999-01-08 2010-08-24 Trueposition, Inc. Advanced triggers for location-based service applications in a wireless location system
US6347125B1 (en) 1999-01-11 2002-02-12 Ericsson Inc. Reduced complexity demodulator for multi-bit symbols
US6556634B1 (en) 1999-02-10 2003-04-29 Ericsson, Inc. Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system
US6490261B1 (en) 1999-10-28 2002-12-03 Ericsson Inc. Overlapping slot transmission using phased arrays
US6754503B1 (en) * 2000-10-02 2004-06-22 Koninklijke Philips Electronics Method for adaptively selecting a soft symbol for a subsequent operation a communication device
US6484285B1 (en) 2000-02-07 2002-11-19 Ericsson, Inc. Tailbiting decoder and method
US6625236B1 (en) 2000-02-08 2003-09-23 Ericsson Inc. Methods and systems for decoding symbols by combining matched-filtered samples with hard symbol decisions
JP3776283B2 (ja) * 2000-03-17 2006-05-17 三菱電機株式会社 復調器、受信機、および通信システム
DE10032237A1 (de) * 2000-07-03 2002-01-17 Infineon Technologies Ag Viterbi-Entzerrung mittels vorausberechneter Metrikinkremente
US7443826B1 (en) 2000-10-04 2008-10-28 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for automatic frequency control in a CDMA receiver
US7006563B2 (en) * 2001-02-01 2006-02-28 Broadcom Corporation Decision feedback equalizer for minimum and maximum phase channels
US7151796B2 (en) * 2001-02-01 2006-12-19 Broadcom Corporation High performance equalizer with enhanced DFE having reduced complexity
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US8437431B1 (en) * 2007-09-20 2013-05-07 Gregory Hubert Piesinger Sequential decoder fast incorrect path elimination method and apparatus for pseudo-orthogonal coding
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CN102158445A (zh) * 2011-04-29 2011-08-17 重庆金美通信有限责任公司 Cpm调制多符号检测
CN103378921B (zh) * 2012-04-17 2016-08-03 华为技术有限公司 信号解调方法和装置
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EP3358811A1 (en) 2012-05-01 2018-08-08 Lisnr, Inc. Systems and methods for content delivery and management
KR102151813B1 (ko) * 2013-06-26 2020-09-03 삼성전자주식회사 통신 시스템에서의 안정적 신호 복조 방법 및 장치
CA2964769A1 (en) 2014-10-15 2016-04-21 William Knauer Inaudible signaling tone
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Also Published As

Publication number Publication date
DE69331571T2 (de) 2002-09-26
SG43305A1 (en) 1997-10-17
US5335250A (en) 1994-08-02
EP0594551B1 (en) 2002-02-13
TW266364B (da) 1995-12-21
ATE213372T1 (de) 2002-02-15
AU5446394A (en) 1994-05-09
DE69331571D1 (de) 2002-03-21
PH31516A (en) 1998-11-03
MY110069A (en) 1997-12-31
CN1070667C (zh) 2001-09-05
ES2168272T3 (es) 2002-06-16
EP0594551A1 (en) 1994-04-27
CN1100579A (zh) 1995-03-22
WO1994009582A1 (en) 1994-04-28

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