SE512008C2 - Förfarande och arrangemang för demodulering av datasymboler - Google Patents

Förfarande och arrangemang för demodulering av datasymboler

Info

Publication number
SE512008C2
SE512008C2 SE9703389A SE9703389A SE512008C2 SE 512008 C2 SE512008 C2 SE 512008C2 SE 9703389 A SE9703389 A SE 9703389A SE 9703389 A SE9703389 A SE 9703389A SE 512008 C2 SE512008 C2 SE 512008C2
Authority
SE
Sweden
Prior art keywords
soft
signal samples
data
values
symbol
Prior art date
Application number
SE9703389A
Other languages
English (en)
Swedish (sv)
Other versions
SE9703389L (sv
SE9703389D0 (sv
Inventor
Stefan Jaeverbring
Olov Mikael Hoeoek
Original Assignee
Ericsson Telefon Ab L M
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 Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9703389A priority Critical patent/SE512008C2/sv
Publication of SE9703389D0 publication Critical patent/SE9703389D0/xx
Priority to AU91940/98A priority patent/AU9194098A/en
Priority to CA002300072A priority patent/CA2300072A1/en
Priority to EP98944389A priority patent/EP1016251B1/en
Priority to DE69832629T priority patent/DE69832629D1/de
Priority to BR9812252-5A priority patent/BR9812252A/pt
Priority to PCT/SE1998/001622 priority patent/WO1999016222A2/en
Priority to CN98809284A priority patent/CN1108681C/zh
Priority to US09/156,627 priority patent/US6269116B1/en
Publication of SE9703389L publication Critical patent/SE9703389L/
Publication of SE512008C2 publication Critical patent/SE512008C2/sv

Links

Classifications

    • 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
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • 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)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)
SE9703389A 1997-09-19 1997-09-19 Förfarande och arrangemang för demodulering av datasymboler SE512008C2 (sv)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9703389A SE512008C2 (sv) 1997-09-19 1997-09-19 Förfarande och arrangemang för demodulering av datasymboler
CN98809284A CN1108681C (zh) 1997-09-19 1998-09-11 解调数据符号的方法和设备
DE69832629T DE69832629D1 (de) 1997-09-19 1998-09-11 Verfahren und einrichtung zur demodulierung von datensymbolen
CA002300072A CA2300072A1 (en) 1997-09-19 1998-09-11 Method and arrangement for demodulating data symbols
EP98944389A EP1016251B1 (en) 1997-09-19 1998-09-11 Method and arrangement for demodulating data symbols
AU91940/98A AU9194098A (en) 1997-09-19 1998-09-11 Method and arrangement for demodulating data symbols
BR9812252-5A BR9812252A (pt) 1997-09-19 1998-09-11 Processo e arranjo para demodular sìmbolos de dados
PCT/SE1998/001622 WO1999016222A2 (en) 1997-09-19 1998-09-11 Method and arrangement for demodulating data symbols
US09/156,627 US6269116B1 (en) 1997-09-19 1998-09-18 Method and arrangement for demodulating data symbols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9703389A SE512008C2 (sv) 1997-09-19 1997-09-19 Förfarande och arrangemang för demodulering av datasymboler

Publications (3)

Publication Number Publication Date
SE9703389D0 SE9703389D0 (sv) 1997-09-19
SE9703389L SE9703389L (sv) 1999-03-20
SE512008C2 true SE512008C2 (sv) 2000-01-10

Family

ID=20408307

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9703389A SE512008C2 (sv) 1997-09-19 1997-09-19 Förfarande och arrangemang för demodulering av datasymboler

Country Status (9)

Country Link
US (1) US6269116B1 (zh)
EP (1) EP1016251B1 (zh)
CN (1) CN1108681C (zh)
AU (1) AU9194098A (zh)
BR (1) BR9812252A (zh)
CA (1) CA2300072A1 (zh)
DE (1) DE69832629D1 (zh)
SE (1) SE512008C2 (zh)
WO (1) WO1999016222A2 (zh)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6477200B1 (en) * 1998-11-09 2002-11-05 Broadcom Corporation Multi-pair gigabit ethernet transceiver
FR2792788B1 (fr) * 1999-04-21 2001-07-13 Mitsubishi Electric France PROCEDE D'EQUILIBRAGE DU RAPPORT Eb/I DANS UN SYSTEME cdma A MULTIPLEXAGE DE SERVICE ET SYSTEME DE TELECOMMUNICATION L'UTILISANT
US6570919B1 (en) * 1999-07-30 2003-05-27 Agere Systems Inc. Iterative decoding of data packets employing decision feedback equalization
US7428265B1 (en) * 1999-11-12 2008-09-23 Cornell Research Foundation Systems and methods for optimal symbol spacing to minimize intersymbol interference in a receiver
FR2802369B1 (fr) * 1999-12-10 2003-09-26 Matra Nortel Communications Procede de radiocommunication a multiplexage temporel, emetteur et recepteur pour la mise en oeuvre du procede
US6697441B1 (en) * 2000-06-06 2004-02-24 Ericsson Inc. Baseband processors and methods and systems for decoding a received signal having a transmitter or channel induced coupling between bits
FR2814300B1 (fr) * 2000-09-18 2003-01-24 Canon Kk Dispositif et procede d'estimation d'une suite de symboles a implantation reduite, circuits et systemes correspondants
US6877125B2 (en) 2000-09-18 2005-04-05 Canon Kabushiki Kaisha Devices and methods for estimating a series of symbols
US6961391B2 (en) * 2001-03-30 2005-11-01 Motorola, Inc. Signal processor used for symbol recovery and methods therein
US20030021241A1 (en) * 2001-07-06 2003-01-30 Dame Stephen G. Avionics audio network system
US20030115061A1 (en) * 2001-09-11 2003-06-19 Broadcom Corporation MPSK equalizer
US7027056B2 (en) 2002-05-10 2006-04-11 Nec Electronics (Europe) Gmbh Graphics engine, and display driver IC and display module incorporating the graphics engine
US7136413B2 (en) * 2002-08-23 2006-11-14 Mediatek, Inc. Method and apparatus for generation of reliability information with diversity
US6697424B1 (en) * 2003-05-06 2004-02-24 Industrial Technology Research Institute Fast convergent pipelined adaptive decision feedback equalizer using post-cursor processing filter
US7502412B2 (en) * 2004-05-20 2009-03-10 Qisda Corporation Adaptive channel estimation using decision feedback
US7530004B1 (en) 2005-04-21 2009-05-05 Neural Systems Corp. Error correction apparatus using forward and reverse threshold functions
US8229040B2 (en) * 2008-12-23 2012-07-24 Telefonaktiebolaget L M Ericsson (Publ) Feedforward receiver and method for reducing inter-symbol interference by using joint soft values
US8930795B1 (en) 2010-10-24 2015-01-06 Valens Semiconductor Ltd. Methods for slicing dynamically modulated symbols
KR102151813B1 (ko) * 2013-06-26 2020-09-03 삼성전자주식회사 통신 시스템에서의 안정적 신호 복조 방법 및 장치
US11540279B2 (en) 2019-07-12 2022-12-27 Meteorcomm, Llc Wide band sensing of transmissions in FDM signals containing multi-width channels
US11916668B2 (en) 2020-12-08 2024-02-27 Meteorcomm, Llc Soft decision differential demodulator for radios in wireless networks supporting train control

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911999A1 (de) * 1989-04-12 1990-10-18 Philips Patentverwaltung Uebertragungssystem
US5155742A (en) 1991-05-03 1992-10-13 Bell Communications Research, Inc. Time dispersion equalizer receiver with a time-reversal structure for TDMA portable radio systems
US5335250A (en) * 1992-10-22 1994-08-02 Ericsson Ge Mobile Communications Inc. Method and apparatus for bidirectional demodulation of digitally modulated signals
US5432821A (en) * 1992-12-02 1995-07-11 University Of Southern California System and method for estimating data sequences in digital transmissions
US5400362A (en) * 1993-03-29 1995-03-21 General Electric Company Double sided slot traversing decoding for time division multiple access (TDMA) radio systems
US5544156A (en) * 1994-04-29 1996-08-06 Telefonaktiebolaget Lm Ericsson Direct sequence CDMA coherent uplink detector
JP3270289B2 (ja) * 1995-03-15 2002-04-02 日本電気株式会社 判定帰還形等化器
FR2751815B1 (fr) * 1996-07-24 1998-10-02 Matra Communication Procede de demodulation numerique d'un segment de signal
US5909465A (en) * 1996-12-05 1999-06-01 Ericsson Inc. Method and apparatus for bidirectional demodulation of digitally modulated signals

Also Published As

Publication number Publication date
EP1016251B1 (en) 2005-11-30
CN1108681C (zh) 2003-05-14
DE69832629D1 (de) 2006-01-05
CA2300072A1 (en) 1999-04-01
AU9194098A (en) 1999-04-12
EP1016251A2 (en) 2000-07-05
SE9703389L (sv) 1999-03-20
SE9703389D0 (sv) 1997-09-19
WO1999016222A3 (en) 1999-06-03
CN1270730A (zh) 2000-10-18
US6269116B1 (en) 2001-07-31
BR9812252A (pt) 2000-07-18
WO1999016222A2 (en) 1999-04-01

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