ATE494664T1 - Gemeinsame demodulation durch einen viterbi- entzerrer mit einer adaptiven gesamtzahl von zuständen - Google Patents

Gemeinsame demodulation durch einen viterbi- entzerrer mit einer adaptiven gesamtzahl von zuständen

Info

Publication number
ATE494664T1
ATE494664T1 AT02791382T AT02791382T ATE494664T1 AT E494664 T1 ATE494664 T1 AT E494664T1 AT 02791382 T AT02791382 T AT 02791382T AT 02791382 T AT02791382 T AT 02791382T AT E494664 T1 ATE494664 T1 AT E494664T1
Authority
AT
Austria
Prior art keywords
impulse response
channel impulse
signal
cross
correlation function
Prior art date
Application number
AT02791382T
Other languages
English (en)
Inventor
Richard Kobylinski
David Wolter
Original Assignee
Sbc Techn Res 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 Sbc Techn Res Inc filed Critical Sbc Techn Res Inc
Application granted granted Critical
Publication of ATE494664T1 publication Critical patent/ATE494664T1/de

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
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1081—Reduction of multipath noise
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • 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
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03184—Details concerning the metric
    • H04L25/03197—Details concerning the metric methods of calculation involving metrics
    • 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
    • H04L25/03203—Trellis search 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03331—Arrangements for the joint estimation of multiple sequences
    • 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
    • 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
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03401—PSK
    • H04L2025/03407—Continuous phase
AT02791382T 2001-12-20 2002-12-06 Gemeinsame demodulation durch einen viterbi- entzerrer mit einer adaptiven gesamtzahl von zuständen ATE494664T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/037,300 US6714607B2 (en) 2001-12-20 2001-12-20 Joint demodulation using a viterbi equalizer having an adaptive total number of states
PCT/US2002/038930 WO2003055085A1 (en) 2001-12-20 2002-12-06 Joint demodulation using a viterbi equalizer having an adaptive total number of states

Publications (1)

Publication Number Publication Date
ATE494664T1 true ATE494664T1 (de) 2011-01-15

Family

ID=21893591

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02791382T ATE494664T1 (de) 2001-12-20 2002-12-06 Gemeinsame demodulation durch einen viterbi- entzerrer mit einer adaptiven gesamtzahl von zuständen

Country Status (6)

Country Link
US (7) US6714607B2 (de)
EP (1) EP1456959B1 (de)
AT (1) ATE494664T1 (de)
AU (1) AU2002366948A1 (de)
DE (1) DE60238867D1 (de)
WO (1) WO2003055085A1 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020114284A1 (en) * 2001-02-02 2002-08-22 Fredric Kronestedt Method and system for receiver-characterized power setting in a cellular communication system
US6714607B2 (en) 2001-12-20 2004-03-30 Sbc Technology Resources, Inc. Joint demodulation using a viterbi equalizer having an adaptive total number of states
US7254196B2 (en) * 2002-11-26 2007-08-07 Agere Systems Inc. Symbol timing for MIMO OFDM and other wireless communication systems
US20050232347A1 (en) * 2004-04-15 2005-10-20 Mediatek Incorporation Apparatus and method for noise enhancement reduction in an adaptive equalizer
US20060029126A1 (en) * 2004-04-15 2006-02-09 Mediatek Inc. Apparatus and method for noise enhancement reduction in an adaptive equalizer
US7706481B2 (en) * 2004-08-20 2010-04-27 Broadcom Corporation Method and system for improving reception in wired and wireless receivers through redundancy and iterative processing
US7643548B2 (en) * 2004-09-27 2010-01-05 Telefonaktiebolaget Lm Ericsson (Publ) Iterative forward-backward parameter estimation
US7639727B1 (en) * 2004-10-05 2009-12-29 Cingular Wireless Ii, L.L.C. System and method for selecting wireless signal bandwidth based on signal strength measurements provided by wireless receivers
US7706992B2 (en) * 2005-02-23 2010-04-27 Digital Intelligence, L.L.C. System and method for signal decomposition, analysis and reconstruction
CA2516910A1 (en) * 2005-08-23 2007-02-23 Research In Motion Limited Joint demodulation techniques for interference cancellation
US7639763B2 (en) * 2005-08-23 2009-12-29 Research In Motion Limited Wireless communications device including a joint demodulation filter for co-channel interference reduction and related methods
US7643590B2 (en) * 2005-08-23 2010-01-05 Research In Motion Limited Joint demodulation filter for co-channel interference reduction and related methods
US7672412B2 (en) 2006-04-05 2010-03-02 Research In Motion Limited Method and receiver for estimating the channel impulse response using a constant modulus interference removal iteration
US8295462B2 (en) * 2008-03-08 2012-10-23 International Business Machines Corporation Alerting a participant when a topic of interest is being discussed and/or a speaker of interest is speaking during a conference call
US9813994B2 (en) 2011-02-16 2017-11-07 Qualcomm, Incorporated Managing transmit power for better frequency re-use in TV white space
US9585025B2 (en) * 2011-02-16 2017-02-28 Qualcomm Incorporated Managing transmit power for better frequency re-use in TV white space
EP3152851B1 (de) * 2014-06-03 2018-03-07 Telefonaktiebolaget LM Ericsson (publ) Bestimmung der kanalzustandsangabe
US9520910B1 (en) * 2015-09-24 2016-12-13 Nxp B.V. Receiver component and method for enhancing a detection range of a time-tracking process in a receiver
KR101710807B1 (ko) * 2015-11-11 2017-03-08 연세대학교 산학협력단 시변 채널에서 동적으로 부대역을 할당하는 통신 시스템
US10757712B2 (en) 2016-02-22 2020-08-25 Microsoft Technology Licensing, Llc Restricted frequency band interference cancellation
US11602311B2 (en) 2019-01-29 2023-03-14 Murata Vios, Inc. Pulse oximetry system
KR20220022398A (ko) * 2020-08-18 2022-02-25 삼성전자주식회사 적응적 등화를 수행하는 수신 회로 및 이를 포함하는 시스템
CN112910865B (zh) * 2021-01-20 2022-04-05 西安电子科技大学 一种基于因子图的推断攻击阶段最大似然估计方法及系统
CN115174327A (zh) * 2022-08-31 2022-10-11 交通运输部规划研究院 基于联合一、二比特差分维特比的信号解调方法及设备

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252221B (en) * 1991-01-24 1995-01-18 Roke Manor Research Improvements in or relating to equalisers for digital radio communication systems
US5245611A (en) * 1991-05-31 1993-09-14 Motorola, Inc. Method and apparatus for providing carrier frequency offset compensation in a tdma communication system
WO1994007311A1 (en) * 1992-09-18 1994-03-31 Oki Electric Industry Co., Ltd. Adaptative equalizing receiver and maximum likelihood sequence estimation receiver
US5432821A (en) 1992-12-02 1995-07-11 University Of Southern California System and method for estimating data sequences in digital transmissions
US5583886A (en) * 1992-12-03 1996-12-10 Motorola, Inc. Method for determining a plurality of channel responses and modifying a received signal therewith
US5298102A (en) * 1993-01-08 1994-03-29 Sorbilite Inc. Expanding pressure chamber for bonding skins to flat and shaped articles
US5790606A (en) 1994-01-11 1998-08-04 Ericsson Inc. Joint demodulation using spatial maximum likelihood
US5566209A (en) 1994-02-10 1996-10-15 Telefonaktiebolaget Lm Ericsson Transceiver algorithms of antenna arrays
JP2669350B2 (ja) * 1994-07-07 1997-10-27 日本電気株式会社 状態数可変最尤系列推定器
FI102797B1 (fi) 1994-10-07 1999-02-15 Nokia Telecommunications Oy Signaalin ilmaisumenetelmä TDMA-matkaviestinjärjestelmän vastaanottimessa sekä menetelmän toteuttava vastaanotin
US6137843A (en) 1995-02-24 2000-10-24 Ericsson Inc. Methods and apparatus for canceling adjacent channel signals in digital communications systems
DE19623667C2 (de) * 1996-06-13 2003-02-13 Siemens Ag Verfahren und Einrichtung zur Detektion von nach dem DS-CDMA Prinzip übertragenen Informationen in einer Empfangseinrichtung
US6067295A (en) * 1997-01-13 2000-05-23 Lucent Technologies, Inc. Method and apparatus for reducing error in recovering information bits in a wireless system
JP3266052B2 (ja) * 1997-06-06 2002-03-18 日本電気株式会社 データ受信装置
US6108517A (en) * 1997-07-28 2000-08-22 Ericsson Inc. Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems
IL121843A (en) 1997-09-28 2000-06-29 Dspc Israel Ltd Detection in the presence of co-channel interference
US6314147B1 (en) 1997-11-04 2001-11-06 The Board Of Trustees Of The Leland Stanford Junior University Two-stage CCI/ISI reduction with space-time processing in TDMA cellular networks
US6144710A (en) 1998-04-23 2000-11-07 Lucent Technologies, Inc. Joint maximum likelihood sequence estimator with dynamic channel description
US6304618B1 (en) 1998-08-31 2001-10-16 Ericsson Inc. Methods and systems for reducing co-channel interference using multiple timings for a received signal
US6671338B1 (en) * 1998-11-12 2003-12-30 Hughes Electronics Corporation Combined interference cancellation with FEC decoding for high spectral efficiency satellite communications
FI982857A (fi) * 1998-12-31 2000-07-01 Nokia Networks Oy Vastaanottomenetelmä ja vastaanotin
US6327317B1 (en) * 1999-09-10 2001-12-04 Telefonaktiebolaget Lm Ericsson (Publ) Combined equalization and decoding techniques
US7016436B1 (en) * 1999-12-17 2006-03-21 Ericsson, Inc. Selective joint demodulation systems and methods for receiving a signal in the presence of noise and interference
US20020044614A1 (en) * 2000-09-12 2002-04-18 Molnar Karl James Methods and systems for reducing interference using co-channel interference mapping
US6832080B1 (en) * 2000-09-12 2004-12-14 Ericsson, Inc. Apparatus for and method of adapting a radio receiver using control functions
US7289494B2 (en) * 2001-12-06 2007-10-30 Pulse-Link, Inc. Systems and methods for wireless communication over a wide bandwidth channel using a plurality of sub-channels
US6714607B2 (en) 2001-12-20 2004-03-30 Sbc Technology Resources, Inc. Joint demodulation using a viterbi equalizer having an adaptive total number of states

Also Published As

Publication number Publication date
WO2003055085A1 (en) 2003-07-03
US20030118131A1 (en) 2003-06-26
US7515660B2 (en) 2009-04-07
US8948319B2 (en) 2015-02-03
EP1456959A1 (de) 2004-09-15
US20140153676A1 (en) 2014-06-05
DE60238867D1 (de) 2011-02-17
EP1456959B1 (de) 2011-01-05
US6714607B2 (en) 2004-03-30
US20130208780A1 (en) 2013-08-15
US8649470B2 (en) 2014-02-11
US20090185610A1 (en) 2009-07-23
US7346130B2 (en) 2008-03-18
US8064549B2 (en) 2011-11-22
EP1456959A4 (de) 2008-06-11
US20040184568A1 (en) 2004-09-23
AU2002366948A1 (en) 2003-07-09
US20080112515A1 (en) 2008-05-15
US8406350B2 (en) 2013-03-26
US20120044956A1 (en) 2012-02-23

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