ES2095261T3 - Decodificacion por decision flexible con ecualizacion de canal. - Google Patents
Decodificacion por decision flexible con ecualizacion de canal.Info
- Publication number
- ES2095261T3 ES2095261T3 ES90916969T ES90916969T ES2095261T3 ES 2095261 T3 ES2095261 T3 ES 2095261T3 ES 90916969 T ES90916969 T ES 90916969T ES 90916969 T ES90916969 T ES 90916969T ES 2095261 T3 ES2095261 T3 ES 2095261T3
- Authority
- ES
- Spain
- Prior art keywords
- information
- time
- decoding
- decision
- recovered
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- 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
- H04L25/03312—Arrangements specific to the provision of output signals
- H04L25/03318—Provision of soft decisions
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Error Detection And Correction (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
- Multi Processors (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
EN UNA RED DE COMUNICACIONES QUE TIENE SEÑALES DISPERSAS EN EL TIEMPO, SE PROPORCIONA UN MECANISMO PARA LA DECODIFICACION DE DECISION CON POCO CONTRASTE. COMPRENDE: LA RADIORRECEPCION DE UNA SEÑAL DISPERSA EN EL TIEMPO, IGUALIZANDO AL MENOS PARCIALMENTE AQUELLOS EFECTOS DE DISPERSION EN EL TIEMPO, RECUPERANDO LA INFORMACION CONTENIDA EN LA SEÑAL, MULTIPLICANDO CON ESA INFORMACION RECUPERADA EL VALOR ABSOLUTO DE ESA SEÑAL AL MENOS PARCIALMENTE IGUALADA (ESCALADA POR UN NUMERO DERIVADO DE LAS CONDICIONES DEL CANAL DURANTE UN TIEMPO EN QUE AL MENOS PARTE DE LA INFORMACION A SER RECUPERADA ES DISTRIBUIDO) Y CORRECCION DE LOS ERRORES DE LA INFORMACION MULTIPLICADA POR UN PLAN DE DECODIFICACION DE CANAL DE ALGORITMO DE VITERBI DE CORRECCION DE ERRORES. SEGUN ESTO, LA INFORMACION SOBRE LA DECISION CON POCO CONTRASTE SE GENERA DESDE DENTRO DEL PROCESO DE IGUALIZACION MISMO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/422,177 US5271042A (en) | 1989-10-13 | 1989-10-13 | Soft decision decoding with channel equalization |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2095261T3 true ES2095261T3 (es) | 1997-02-16 |
Family
ID=23673719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90916969T Expired - Lifetime ES2095261T3 (es) | 1989-10-13 | 1990-09-24 | Decodificacion por decision flexible con ecualizacion de canal. |
Country Status (15)
Country | Link |
---|---|
US (1) | US5271042A (es) |
EP (1) | EP0495006B1 (es) |
JP (1) | JP2591343B2 (es) |
KR (1) | KR960008984B1 (es) |
CN (1) | CN1017294B (es) |
AU (1) | AU637166B2 (es) |
CA (1) | CA2066270C (es) |
DE (1) | DE69029330T2 (es) |
DK (1) | DK0495006T3 (es) |
ES (1) | ES2095261T3 (es) |
IE (1) | IE80438B1 (es) |
MX (1) | MX171792B (es) |
PT (1) | PT95577B (es) |
TR (1) | TR26468A (es) |
WO (1) | WO1991006165A1 (es) |
Families Citing this family (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5142551A (en) * | 1991-02-28 | 1992-08-25 | Motorola, Inc. | Signal weighting system for digital receiver |
JP2673389B2 (ja) * | 1991-03-07 | 1997-11-05 | 松下電器産業株式会社 | データ伝送装置 |
CA2076099A1 (en) * | 1991-09-03 | 1993-03-04 | Howard Leroy Lester | Automatic simulcast alignment |
FI90477C (fi) * | 1992-03-23 | 1994-02-10 | Nokia Mobile Phones Ltd | Puhesignaalin laadun parannusmenetelmä lineaarista ennustusta käyttävään koodausjärjestelmään |
JPH05315977A (ja) * | 1992-05-12 | 1993-11-26 | Hitachi Ltd | 軟判定最尤復号方法および復号器 |
CA2113919A1 (en) * | 1992-06-18 | 1993-12-23 | Norio Yamaguchi | Maximum likelihood sequence estimator and maximum likelihood sequence estimation method |
SE470372B (sv) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Metod jämte anordning att uppskatta kvaliten vid ramfelsdetektering i mottagaren hos ett radiokommunikationssystem |
FI93068C (fi) * | 1992-07-27 | 1995-02-10 | Nokia Mobile Phones Ltd | Kytkentä häiriöiden haittavaikutusten pienentämiseksi sovitettua suodatinta käyttävissä vastaanottimissa |
FI91579C (fi) * | 1992-08-20 | 1994-07-11 | Nokia Mobile Phones Ltd | Dekoodaus käyttäen lineaarista metriciä ja häiriön estimointia |
GB2271916B (en) * | 1992-10-23 | 1996-05-22 | Roke Manor Research | Improvements in or relating to digital radio communication systems |
JP3239501B2 (ja) * | 1992-12-22 | 2001-12-17 | ソニー株式会社 | ビタビ復号方法及び復号装置 |
US5424881A (en) | 1993-02-01 | 1995-06-13 | Cirrus Logic, Inc. | Synchronous read channel |
WO1996002973A1 (en) * | 1993-03-29 | 1996-02-01 | Stanford Telecommunications, Inc. | Viterbi acs unit with renormalization |
US5363413A (en) * | 1993-05-20 | 1994-11-08 | Motorola, Inc. | Data decoder and method for use therein using a dynamically indexed channel state metric |
JP2601160B2 (ja) * | 1993-10-27 | 1997-04-16 | 日本電気株式会社 | ディジタルデータ伝送方式 |
US6302576B1 (en) * | 1993-11-29 | 2001-10-16 | Oki Electric Industry Co., Ltd. | Soft decision estimation unit and maximum-likelihood sequence estimation unit |
US5471500A (en) * | 1994-03-08 | 1995-11-28 | At&T Ipm Corp. | Soft symbol decoding |
JP2864988B2 (ja) * | 1994-06-21 | 1999-03-08 | 日本電気株式会社 | 軟判定信号出力形受信機 |
JPH0877726A (ja) * | 1994-09-06 | 1996-03-22 | Hitachi Ltd | ディジタル信号処理装置、誤り検出方法および記録媒体再生装置 |
JPH08329619A (ja) * | 1994-10-27 | 1996-12-13 | Hitachi Ltd | データ再生方法、データ再生装置、およびデータ再生用回路 |
FR2730370B1 (fr) * | 1995-02-07 | 1997-04-25 | France Telecom | Dispositif de reception de signaux numeriques a structure iterative, module et procede correspondants |
JPH08307283A (ja) * | 1995-03-09 | 1996-11-22 | Oki Electric Ind Co Ltd | 最尤系列推定器及び最尤系列推定方法 |
US5742907A (en) * | 1995-07-19 | 1998-04-21 | Ericsson Inc. | Automatic clear voice and land-line backup alignment for simulcast system |
JP2838994B2 (ja) | 1995-12-27 | 1998-12-16 | 日本電気株式会社 | データ信号受信装置 |
FI100561B (fi) * | 1996-04-26 | 1997-12-31 | Nokia Telecommunications Oy | Yhteyden laadun estimointimenetelmä, diversiteettiyhdistelymenetelmä s ekä vastaanotin |
JPH10322408A (ja) | 1997-03-19 | 1998-12-04 | Sony Corp | 受信装置及び信号受信方法 |
KR100429506B1 (ko) * | 1998-04-18 | 2004-11-20 | 삼성전자주식회사 | 통신시스템의 채널부호/복호장치 및 방법 |
US6317470B1 (en) * | 1998-09-15 | 2001-11-13 | Ibiquity Digital Corporation | Adaptive weighting method for orthogonal frequency division multiplexed soft symbols using channel state information estimates |
KR100357031B1 (ko) * | 2000-01-28 | 2002-10-18 | 삼성탈레스 주식회사 | 복호기의 연판정 회로 및 연판정 방법 |
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 |
US6977972B1 (en) | 2000-07-12 | 2005-12-20 | Sharp Laboratories Of America, Inc. | Method of hybrid soft/hard decision demodulation of signals with multilevel modulation |
US7020185B1 (en) | 2000-11-28 | 2006-03-28 | Lucent Technologies Inc. | Method and apparatus for determining channel conditions in a communication system |
US6938196B2 (en) * | 2001-06-15 | 2005-08-30 | Flarion Technologies, Inc. | Node processors for use in parity check decoders |
US7673223B2 (en) * | 2001-06-15 | 2010-03-02 | Qualcomm Incorporated | Node processors for use in parity check decoders |
US6633856B2 (en) * | 2001-06-15 | 2003-10-14 | Flarion Technologies, Inc. | Methods and apparatus for decoding LDPC codes |
US7131054B2 (en) * | 2001-09-17 | 2006-10-31 | Digeo, Inc. | Apparatus and method for efficient decoder normalization |
KR100459395B1 (ko) * | 2001-11-28 | 2004-12-03 | 엘지전자 주식회사 | 비터비 입력신호의 조정 장치 및 방법 |
US7567634B1 (en) | 2002-02-15 | 2009-07-28 | Marvell International Ltd. | Reduced complexity viterbi decoding method and apparatus |
US7809053B2 (en) * | 2002-04-04 | 2010-10-05 | Infineon Technologies Ag | Device and method for control scaling and quantization of soft output values from an equalizer |
DE10214908A1 (de) * | 2002-04-04 | 2003-11-13 | Infineon Technologies Ag | Einrichtung und Verfahren zur geregelten Skalierung und Quantisierung von Soft-Output-Werten eines Entzerrers |
US6961888B2 (en) | 2002-08-20 | 2005-11-01 | Flarion Technologies, Inc. | Methods and apparatus for encoding LDPC codes |
US8005128B1 (en) | 2003-09-23 | 2011-08-23 | Rambus Inc. | Methods for estimation and interference cancellation for signal processing |
US7715508B2 (en) | 2005-11-15 | 2010-05-11 | Tensorcomm, Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
GB2395399A (en) * | 2002-11-07 | 2004-05-19 | Ttpcomm Ltd | Preparation of signals for decoding |
JP4382672B2 (ja) | 2002-11-22 | 2009-12-16 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | 通信信号を復号する方法、装置およびデバイス |
EP1422896A1 (en) * | 2002-11-22 | 2004-05-26 | Telefonaktiebolaget LM Ericsson (publ) | Calculation of soft decision values using reliability information of the amplitude |
US6957375B2 (en) * | 2003-02-26 | 2005-10-18 | Flarion Technologies, Inc. | Method and apparatus for performing low-density parity-check (LDPC) code operations using a multi-level permutation |
WO2004079563A1 (en) * | 2003-02-26 | 2004-09-16 | Flarion Technologies, Inc. | Soft information scaling for iterative decoding |
US20070234178A1 (en) * | 2003-02-26 | 2007-10-04 | Qualcomm Incorporated | Soft information scaling for interactive decoding |
US7231557B2 (en) * | 2003-04-02 | 2007-06-12 | Qualcomm Incorporated | Methods and apparatus for interleaving in a block-coherent communication system |
US7434145B2 (en) * | 2003-04-02 | 2008-10-07 | Qualcomm Incorporated | Extracting soft information in a block-coherent communication system |
US8196000B2 (en) * | 2003-04-02 | 2012-06-05 | Qualcomm Incorporated | Methods and apparatus for interleaving in a block-coherent communication system |
US6986096B2 (en) * | 2003-07-29 | 2006-01-10 | Qualcomm, Incorporated | Scaling and quantizing soft-decision metrics for decoding |
US7237181B2 (en) * | 2003-12-22 | 2007-06-26 | Qualcomm Incorporated | Methods and apparatus for reducing error floors in message passing decoders |
US7346832B2 (en) * | 2004-07-21 | 2008-03-18 | Qualcomm Incorporated | LDPC encoding methods and apparatus |
US7395490B2 (en) * | 2004-07-21 | 2008-07-01 | Qualcomm Incorporated | LDPC decoding methods and apparatus |
US7127659B2 (en) * | 2004-08-02 | 2006-10-24 | Qualcomm Incorporated | Memory efficient LDPC decoding methods and apparatus |
US7711075B2 (en) | 2005-11-15 | 2010-05-04 | Tensorcomm Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7826516B2 (en) | 2005-11-15 | 2010-11-02 | Rambus Inc. | Iterative interference canceller for wireless multiple-access systems with multiple receive antennas |
US7991088B2 (en) | 2005-11-15 | 2011-08-02 | Tommy Guess | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7702048B2 (en) * | 2005-11-15 | 2010-04-20 | Tensorcomm, Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US20070110135A1 (en) | 2005-11-15 | 2007-05-17 | Tommy Guess | Iterative interference cancellation for MIMO-OFDM receivers |
KR100772547B1 (ko) * | 2006-08-31 | 2007-11-02 | 주식회사 하이닉스반도체 | 반도체 장치 및 그의 테스트 방법 |
US8094707B1 (en) | 2007-03-21 | 2012-01-10 | Arrowhead Center, Inc. | List-based detection in fading channels with long intersymbol interference |
EP2782305B1 (en) | 2013-03-20 | 2019-07-24 | ZTE (USA) Inc. | Statistics adaptive soft decision forward error correction in digital communication |
US9329929B2 (en) * | 2013-03-20 | 2016-05-03 | Zte (Usa) Inc. | Soft maximum likelihood sequence estimation in digital communication |
EP2975787B1 (en) | 2014-07-16 | 2018-10-03 | ZTE Corporation | Adaptive post digital filter and inter-symbol interference equalizer for optical communication |
EP3007394B1 (en) | 2014-10-07 | 2019-07-03 | ZTE Corporation | Maximum likelihood sequence estimation of quadrature amplitude modulated signals |
TWI627846B (zh) * | 2016-03-30 | 2018-06-21 | 晨星半導體股份有限公司 | 等化增強模組、解調變系統以及等化增強方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3003030A (en) * | 1954-09-18 | 1961-10-03 | Kokusai Denshin Denwa Co Ltd | Transmission characteristic compensation system |
US2982852A (en) * | 1956-11-21 | 1961-05-02 | Research Corp | Anti-multipath communication system |
US3356947A (en) * | 1963-12-23 | 1967-12-05 | Cardion Electronics Inc | Wave-signal dispersion correcting network |
US3484693A (en) * | 1966-01-03 | 1969-12-16 | Gen Electric | Frequency shifted sliding tone sampled data communication system |
FR2301978A1 (fr) * | 1975-02-21 | 1976-09-17 | Ibm France | Egaliseur recursif a decision dirigee par la valeur de la phase du signal recu |
DE2901670C2 (de) * | 1979-01-17 | 1981-02-19 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Nachrichtenübertragungssystem für elektromagnetische Wellen |
US4309772A (en) * | 1980-01-24 | 1982-01-05 | Motorola, Inc. | Soft quantizer for FM radio binary digital signaling |
GB2087198B (en) * | 1980-10-28 | 1985-02-27 | Plessey Co Ltd | Data decoding |
US4644564A (en) * | 1983-08-05 | 1987-02-17 | International Business Machines Corporation | Decoding the output signal of a partial-response class-IV communication or recording device channel |
US4631735A (en) * | 1984-12-28 | 1986-12-23 | Codex Corporation | Coded modulation system with feedback |
US4748626A (en) * | 1987-01-28 | 1988-05-31 | Racal Data Communications Inc. | Viterbi decoder with reduced number of data move operations |
US4852090A (en) * | 1987-02-02 | 1989-07-25 | Motorola, Inc. | TDMA communications system with adaptive equalization |
US4885757A (en) * | 1987-06-01 | 1989-12-05 | Texas Instruments Incorporated | Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks |
NL8701333A (nl) * | 1987-06-09 | 1989-01-02 | Philips Nv | Inrichting voor het bestrijden van intersymboolinterferentie en ruis. |
GB2211968A (en) * | 1987-11-04 | 1989-07-12 | Philips Nv | Divider circuit e.g. for normalising |
US4829543A (en) * | 1987-12-04 | 1989-05-09 | Motorola, Inc. | Phase-coherent TDMA quadrature receiver for multipath fading channels |
-
1989
- 1989-10-13 US US07/422,177 patent/US5271042A/en not_active Expired - Lifetime
-
1990
- 1990-09-11 IE IE329590A patent/IE80438B1/en not_active IP Right Cessation
- 1990-09-24 AU AU67294/90A patent/AU637166B2/en not_active Ceased
- 1990-09-24 DE DE69029330T patent/DE69029330T2/de not_active Expired - Fee Related
- 1990-09-24 DK DK90916969.0T patent/DK0495006T3/da active
- 1990-09-24 EP EP90916969A patent/EP0495006B1/en not_active Expired - Lifetime
- 1990-09-24 CA CA002066270A patent/CA2066270C/en not_active Expired - Lifetime
- 1990-09-24 WO PCT/US1990/005359 patent/WO1991006165A1/en active IP Right Grant
- 1990-09-24 KR KR1019920700836A patent/KR960008984B1/ko not_active IP Right Cessation
- 1990-09-24 JP JP2515496A patent/JP2591343B2/ja not_active Expired - Lifetime
- 1990-09-24 ES ES90916969T patent/ES2095261T3/es not_active Expired - Lifetime
- 1990-10-10 MX MX022770A patent/MX171792B/es unknown
- 1990-10-10 CN CN90108335A patent/CN1017294B/zh not_active Expired
- 1990-10-11 TR TR90/0978A patent/TR26468A/xx unknown
- 1990-10-12 PT PT95577A patent/PT95577B/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PT95577A (pt) | 1992-08-31 |
CN1050958A (zh) | 1991-04-24 |
IE903295A1 (en) | 1991-04-24 |
KR960008984B1 (ko) | 1996-07-10 |
DK0495006T3 (da) | 1996-12-23 |
KR920704483A (ko) | 1992-12-19 |
EP0495006A1 (en) | 1992-07-22 |
CA2066270C (en) | 1995-03-28 |
PT95577B (pt) | 1998-07-31 |
DE69029330T2 (de) | 1997-05-28 |
IE80438B1 (en) | 1998-07-15 |
WO1991006165A1 (en) | 1991-05-02 |
AU6729490A (en) | 1991-05-16 |
JP2591343B2 (ja) | 1997-03-19 |
MX171792B (es) | 1993-11-15 |
US5271042A (en) | 1993-12-14 |
DE69029330D1 (de) | 1997-01-16 |
JPH05504872A (ja) | 1993-07-22 |
CA2066270A1 (en) | 1991-04-14 |
CN1017294B (zh) | 1992-07-01 |
TR26468A (tr) | 1995-03-15 |
AU637166B2 (en) | 1993-05-20 |
EP0495006B1 (en) | 1996-12-04 |
EP0495006A4 (en) | 1992-10-07 |
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