BR9901493A - Avaliação iterativa de canal. - Google Patents
Avaliação iterativa de canal.Info
- Publication number
- BR9901493A BR9901493A BR9901493-9A BR9901493A BR9901493A BR 9901493 A BR9901493 A BR 9901493A BR 9901493 A BR9901493 A BR 9901493A BR 9901493 A BR9901493 A BR 9901493A
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- impulse response
- estimated
- channel evaluation
- iterative channel
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- 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
-
- 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
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
Abstract
<B>AVALIAçãO ITERATIVA DE CANAL<D>. Invenção inclui método e aparelho para estimular resposta de impulso de canal e dado em um sinal transmitido sobre um canal em um sistema de comunicação. A resposta do impulso do canal é estimado e então, utilizando a resposta de impulso de canal estimado, o dado no sinal é estimado. A saída é então alimentada na saída do estimador de impulso do canal e a estimativa de resposta do canal pode ser iterativa a um número de tempos. A etapa de resposta do impulso do canal utiliza um canal de correlação.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98303418 | 1998-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9901493A true BR9901493A (pt) | 2000-01-11 |
Family
ID=8234801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9901493-9A BR9901493A (pt) | 1998-04-30 | 1999-04-26 | Avaliação iterativa de canal. |
Country Status (8)
Country | Link |
---|---|
US (1) | US6459728B1 (pt) |
JP (1) | JP3578938B2 (pt) |
KR (1) | KR100377040B1 (pt) |
CN (1) | CN100391205C (pt) |
AU (1) | AU726062B2 (pt) |
BR (1) | BR9901493A (pt) |
CA (1) | CA2269925C (pt) |
DE (1) | DE69935088T2 (pt) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6625459B1 (en) * | 1999-06-04 | 2003-09-23 | Broadcom Corporation | Method and apparatus for efficient determination of channel estimate and baud frequency offset estimate |
US6542560B1 (en) * | 1999-04-23 | 2003-04-01 | Lucent Technologies Inc. | Method of channel estimation and compensation based thereon |
EP1065851A1 (en) * | 1999-07-02 | 2001-01-03 | Motorola, Inc. | Decision feedback equaliser with reduced-state sequence estimation |
US6570919B1 (en) * | 1999-07-30 | 2003-05-27 | Agere Systems Inc. | Iterative decoding of data packets employing decision feedback equalization |
SE516962C2 (sv) * | 1999-11-25 | 2002-03-26 | Ericsson Telefon Ab L M | Digital kommunikationsmottagare med inbyggd styrenhet för in- och urkoppling av kanalföljare beroende av kommunikationskanalens kvalitet |
FI113721B (fi) * | 1999-12-15 | 2004-05-31 | Nokia Corp | Menetelmä ja vastaanotin kanavaestimaatin iteratiiviseksi parantamiseksi |
US7099413B2 (en) * | 2000-02-07 | 2006-08-29 | At&T Corp. | Method for near optimal joint channel estimation and data detection for COFDM systems |
FR2809249B1 (fr) * | 2000-05-16 | 2004-04-23 | France Telecom | Procede et systeme de detection et de decodage iteratif de symboles recus, couple a une reestimation des coefficients du canal de transmission |
FI113116B (fi) * | 2000-12-21 | 2004-02-27 | Nokia Corp | Menetelmä kanavakorjauksen suorittamiseksi, vastaanotin, kanavakorjain ja langaton viestintälaite |
US7079601B2 (en) * | 2001-06-19 | 2006-07-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Efficient channel estimation in a digital communications system |
US8045935B2 (en) | 2001-12-06 | 2011-10-25 | Pulse-Link, Inc. | High data rate transmitter and receiver |
US7317756B2 (en) * | 2001-12-06 | 2008-01-08 | Pulse-Link, Inc. | Ultra-wideband communication apparatus and methods |
US7092436B2 (en) * | 2002-01-25 | 2006-08-15 | Mitsubishi Electric Research Laboratories, Inc. | Expectation-maximization-based channel estimation and signal detection for wireless communications systems |
AU2003903826A0 (en) * | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
KR100535638B1 (ko) * | 2002-06-19 | 2005-12-08 | 주식회사 케이티 | 무선 랜 시스템을 위한 직교주파수분할다중화 동기복조방법 및 그 장치 |
EP1379040A1 (en) * | 2002-07-03 | 2004-01-07 | Motorola, Inc. | Arrangement and method for iterative channel impulse response estimation |
GB0229544D0 (en) * | 2002-12-18 | 2003-01-22 | Dehghan Fatemeh S | Wireless communications network simulation method |
US7349461B2 (en) * | 2003-02-13 | 2008-03-25 | Qualcomm Incorporated | Efficient back-end channel matched filter (CMF) |
US7177354B2 (en) * | 2003-04-22 | 2007-02-13 | Zenith Electronics Corporation | Method and apparatus for the control of a decision feedback equalizer |
US7627029B2 (en) | 2003-05-20 | 2009-12-01 | Rambus Inc. | Margin test methods and circuits |
US7590175B2 (en) * | 2003-05-20 | 2009-09-15 | Rambus Inc. | DFE margin test methods and circuits that decouple sample and feedback timing |
EP1531590A1 (en) * | 2003-11-11 | 2005-05-18 | STMicroelectronics Belgium N.V. | Method and apparatus for channel equalisation with estimation of the channel impulse response length |
KR100556403B1 (ko) | 2003-12-12 | 2006-03-03 | 엘지전자 주식회사 | Vsb 수신 시스템에서 채널 등화 장치 및 그 방법 |
US7352829B2 (en) * | 2004-01-12 | 2008-04-01 | Infineon Technologies Ag | Data-aided channel estimation |
TWI258956B (en) * | 2004-09-17 | 2006-07-21 | Benq Corp | Method of channel estimation |
TWI255100B (en) * | 2004-09-17 | 2006-05-11 | Via Tech Inc | Method and apparatus for channel impulse response estimation in GSM systems |
CN1893409B (zh) * | 2005-07-08 | 2010-04-28 | 清华大学 | 一种ofdm调制***中伪随机序列填充的迭代消除方法 |
KR101371381B1 (ko) * | 2006-11-07 | 2014-03-10 | 삼성전자주식회사 | 통신시스템에서 채널 추정 및 채널 저장 방법 |
US7764747B2 (en) | 2007-03-30 | 2010-07-27 | Olympus Corporation | Methods and systems for transmitting and processing pilot signals |
CN101364831B (zh) * | 2007-08-09 | 2012-02-15 | 清华大学 | 信道估计的方法 |
US8229036B2 (en) * | 2007-12-21 | 2012-07-24 | Broadcom Corporation | Characterizing channel response using data tone decision feedback |
JP5246771B2 (ja) * | 2008-11-11 | 2013-07-24 | 国立大学法人東京工業大学 | 位相雑音補償受信機 |
CN102938746B (zh) * | 2012-12-11 | 2015-11-11 | 上海现代先进超精密制造中心有限公司 | 基于复指数基扩展模型的信道估计方法和信道估计器 |
KR102191290B1 (ko) * | 2014-01-29 | 2020-12-15 | 삼성전자 주식회사 | 이동통신 시스템에서 통신 채널 추정 방법 및 장치 |
US10182439B2 (en) | 2016-02-16 | 2019-01-15 | Samsung Electronics Co., Ltd | Method and apparatus for data-aided iterative channel estimation |
DE102018206132B4 (de) * | 2018-04-20 | 2019-11-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Decodergestützte iterative Kanalschätzung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3926277A1 (de) * | 1989-08-09 | 1991-02-14 | Philips Patentverwaltung | Empfaenger fuer zeitvariant verzerrte datensignale |
US5263026A (en) * | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
SE470371B (sv) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler |
US5937014A (en) * | 1997-03-27 | 1999-08-10 | Telefonaktiebolaget Lm Ericsson | Self-synchronizing equalization techniques and systems |
-
1999
- 1999-04-26 BR BR9901493-9A patent/BR9901493A/pt not_active IP Right Cessation
- 1999-04-26 CA CA002269925A patent/CA2269925C/en not_active Expired - Fee Related
- 1999-04-27 DE DE69935088T patent/DE69935088T2/de not_active Expired - Lifetime
- 1999-04-27 CN CNB99105184XA patent/CN100391205C/zh not_active Expired - Fee Related
- 1999-04-27 AU AU24010/99A patent/AU726062B2/en not_active Ceased
- 1999-04-28 JP JP12085999A patent/JP3578938B2/ja not_active Expired - Fee Related
- 1999-04-30 US US09/302,764 patent/US6459728B1/en not_active Expired - Lifetime
- 1999-04-30 KR KR10-1999-0015588A patent/KR100377040B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2269925C (en) | 2004-02-03 |
CN1236242A (zh) | 1999-11-24 |
AU726062B2 (en) | 2000-10-26 |
CN100391205C (zh) | 2008-05-28 |
JP3578938B2 (ja) | 2004-10-20 |
KR19990083630A (ko) | 1999-11-25 |
US6459728B1 (en) | 2002-10-01 |
AU2401099A (en) | 1999-11-11 |
CA2269925A1 (en) | 1999-10-30 |
DE69935088T2 (de) | 2007-11-15 |
KR100377040B1 (ko) | 2003-03-19 |
DE69935088D1 (de) | 2007-03-29 |
JP2000004190A (ja) | 2000-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 3A, 4A, 5A, 6A, 7A E 8A ANUIDADES. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007. |