JP2008507860A - ノイズ強度推定に基づく等化器ロック検出器 - Google Patents

ノイズ強度推定に基づく等化器ロック検出器 Download PDF

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Publication number
JP2008507860A
JP2008507860A JP2007513159A JP2007513159A JP2008507860A JP 2008507860 A JP2008507860 A JP 2008507860A JP 2007513159 A JP2007513159 A JP 2007513159A JP 2007513159 A JP2007513159 A JP 2007513159A JP 2008507860 A JP2008507860 A JP 2008507860A
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JP
Japan
Prior art keywords
equalizer
space
receiver
estimate
received signal
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.)
Withdrawn
Application number
JP2007513159A
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English (en)
Japanese (ja)
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JP2008507860A6 (ja
JP2008507860A5 (cg-RX-API-DMAC7.html
Inventor
シウエ，ドン−チャン
ブレット，アーロン，リール
ベロッツェルコフスキー，マキシム，ビー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Licensing SAS
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Thomson Licensing SAS
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Publication date
Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Publication of JP2008507860A publication Critical patent/JP2008507860A/ja
Publication of JP2008507860A5 publication Critical patent/JP2008507860A5/ja
Publication of JP2008507860A6 publication Critical patent/JP2008507860A6/ja
Withdrawn legal-status Critical Current

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    • 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
    • H04L25/03012—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • 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
    • H04L2025/03382—Single of vestigal sideband
    • 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
    • H04L2025/0342—QAM
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03681—Control of adaptation
    • H04L2025/037—Detection of convergence state
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03726—Switching between algorithms
    • H04L2025/03732—Switching between algorithms according to the convergence state

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP2007513159A 2004-05-12 2005-04-18 ノイズ強度推定に基づく等化器ロック検出器 Withdrawn JP2008507860A (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US57029004P 2004-05-12 2004-05-12
US57029204P 2004-05-12 2004-05-12
US60/570,290 2004-05-12
US60/570,292 2004-05-12
PCT/US2005/013145 WO2005114932A1 (en) 2004-05-12 2005-04-18 Noise power estimate based equalizer lock detector

Publications (3)

Publication Number Publication Date
JP2008507860A true JP2008507860A (ja) 2008-03-13
JP2008507860A5 JP2008507860A5 (cg-RX-API-DMAC7.html) 2008-05-01
JP2008507860A6 JP2008507860A6 (ja) 2008-07-03

Family

ID=34966132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007513159A Withdrawn JP2008507860A (ja) 2004-05-12 2005-04-18 ノイズ強度推定に基づく等化器ロック検出器

Country Status (5)

Country Link
US (1) US20080043829A1 (cg-RX-API-DMAC7.html)
EP (1) EP1745622A1 (cg-RX-API-DMAC7.html)
JP (1) JP2008507860A (cg-RX-API-DMAC7.html)
KR (1) KR20070014165A (cg-RX-API-DMAC7.html)
WO (1) WO2005114932A1 (cg-RX-API-DMAC7.html)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7729456B2 (en) * 2004-11-17 2010-06-01 Via Technologies, Inc. Burst detection apparatus and method for radio frequency receivers
US7702053B2 (en) * 2005-05-05 2010-04-20 Broadcom Corporation State based algorithm to minimize mean squared error
US7613260B2 (en) 2005-11-21 2009-11-03 Provigent Ltd Modem control using cross-polarization interference estimation
US7796708B2 (en) * 2006-03-29 2010-09-14 Provigent Ltd. Adaptive receiver loops with weighted decision-directed error
CN101047688B (zh) * 2006-06-13 2011-04-20 华为技术有限公司 一种估计信噪比的方法及装置
US7643512B2 (en) 2006-06-29 2010-01-05 Provigent Ltd. Cascaded links with adaptive coding and modulation
US7580469B2 (en) * 2006-07-06 2009-08-25 Provigent Ltd Communication link control using iterative code metrics
US7839952B2 (en) * 2006-12-05 2010-11-23 Provigent Ltd Data rate coordination in protected variable-rate links
US7720136B2 (en) * 2006-12-26 2010-05-18 Provigent Ltd Adaptive coding and modulation based on link performance prediction
US8315574B2 (en) 2007-04-13 2012-11-20 Broadcom Corporation Management of variable-rate communication links
US7821938B2 (en) * 2007-04-20 2010-10-26 Provigent Ltd. Adaptive coding and modulation for synchronous connections
US8001445B2 (en) * 2007-08-13 2011-08-16 Provigent Ltd. Protected communication link with improved protection indication
US8040985B2 (en) 2007-10-09 2011-10-18 Provigent Ltd Decoding of forward error correction codes in the presence of phase noise
US8259859B2 (en) * 2009-09-21 2012-09-04 Techwell Llc Method and system for carrier recovery for QAM
CA2905603A1 (en) * 2013-03-15 2014-09-18 Sirius Xm Radio Inc. Noise power estimation in digital communications systems with fast fading channels
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 (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157690A (en) * 1990-10-30 1992-10-20 Level One Communications, Inc. Adaptive convergent decision feedback equalizer
US5195106A (en) * 1990-11-14 1993-03-16 Motorola, Inc. Method for channel adaptive detecting/equalize
US5303263A (en) * 1991-06-25 1994-04-12 Oki Electric Industry Co., Ltd. Transmission channel characteristic equalizer
CA2073944C (en) * 1991-07-26 2000-09-19 Woo H. Paik Carrier phase recovery for an adaptive equalizer
US5414732A (en) * 1993-05-17 1995-05-09 Loral Aerospace Corp. Adaptive equalizer and method for operation at high symbol rates
US5428562A (en) * 1993-09-03 1995-06-27 At&T Corp. Fast converging adaptive filter
KR960012019B1 (ko) * 1993-11-18 1996-09-09 엘지전자 주식회사 에이치디티브이(hdtv)의 채널등화기
US5526378A (en) * 1994-12-14 1996-06-11 Thomson Consumer Electronics, Inc. Blind multipath correction for digital communication channel
US6075816A (en) * 1996-11-27 2000-06-13 Lucent Technologies, Inc. Windowing technique for blind equalization
US6313882B1 (en) * 1998-01-13 2001-11-06 Samsung Electronics Co., Ltd. TV reception apparatus using same ghost-cancellation circuitry for receiving different types of TV signals
JP3230482B2 (ja) * 1998-03-13 2001-11-19 日本電気株式会社 適応等化器
US6313885B1 (en) * 1998-03-25 2001-11-06 Samsung Electronics Co., Ltd. DTV receiver with baseband equalization filters for QAM signal and for VSB signal which employ common elements
US6215818B1 (en) * 1998-04-29 2001-04-10 Nortel Networks Limited Method and apparatus for operating an adaptive decision feedback equalizer
EP0963085A1 (de) * 1998-06-04 1999-12-08 Siemens Aktiengesellschaft Verfahren zur adaptiven Filtereinstellung in einem QAM/CAP-System
US6103970A (en) * 1998-08-20 2000-08-15 Tecstar Power Systems, Inc. Solar cell having a front-mounted bypass diode
US6418164B1 (en) * 1999-01-14 2002-07-09 Nxtwave Communications, Inc. Adaptive equalizer with enhanced error quantization
US6337878B1 (en) * 1999-03-03 2002-01-08 Nxt Wave Communications Adaptive equalizer with decision directed constant modulus algorithm
DE19921545A1 (de) * 1999-05-11 2000-11-23 Angew Solarenergie Ase Gmbh Solarzelle sowie Verfahren zur Herstellung einer solchen
KR100652028B1 (ko) * 1999-07-13 2006-11-30 엘지전자 주식회사 다매체 디지털 방송 수신기의 락 디텍트(ｌｏｃｋ ｄｅｔｅｃｔ)장치
US6635507B1 (en) * 1999-07-14 2003-10-21 Hughes Electronics Corporation Monolithic bypass-diode and solar-cell string assembly
US6775521B1 (en) * 1999-08-09 2004-08-10 Broadcom Corporation Bad frame indicator for radio telephone receivers
US7085691B2 (en) * 1999-11-04 2006-08-01 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
US7110923B2 (en) * 1999-11-04 2006-09-19 Verticalband, Limited Fast, blind equalization techniques using reliable symbols
US6980602B1 (en) * 2001-01-31 2005-12-27 Comsys Communication & Signal Processing Ltd. Normalization of equalizer soft output for channels with varying noise power
US6815736B2 (en) * 2001-02-09 2004-11-09 Midwest Research Institute Isoelectronic co-doping
US7106792B2 (en) * 2001-06-04 2006-09-12 Qualcomm, Inc. Method and apparatus for estimating the signal to interference-plus-noise ratio of a wireless channel
DE10149065A1 (de) * 2001-10-05 2003-04-24 Infineon Technologies Ag Verfahren und Einrichtung zur iterativen JD-Entzerrung
JP4578107B2 (ja) * 2002-04-17 2010-11-10 トムソン ライセンシング データ信号を受信する装置および方法
US7027503B2 (en) * 2002-06-04 2006-04-11 Qualcomm Incorporated Receiver with a decision feedback equalizer and a linear equalizer
US7190721B2 (en) * 2002-06-28 2007-03-13 Lucent Technologies Inc. Error convergence measurement circuit for providing convergence of a filter
US7116703B2 (en) * 2002-10-15 2006-10-03 Thomson Licensing Multipath signal strength indicator
KR100556401B1 (ko) * 2003-12-04 2006-03-03 엘지전자 주식회사 Ｖｓｂ 수신 시스템의 등화 장치
JP2007537659A (ja) * 2004-05-12 2007-12-20 トムソン ライセンシング 捕捉を改良したキャリア回復アーキテクチャ
CN1977505A (zh) * 2004-05-12 2007-06-06 汤姆森许可公司 用于均衡器差错信号的、基于星座定位的步长
TWI258857B (en) * 2004-06-02 2006-07-21 Mstar Semiconductor Inc Method for automatic equalizing mode selection and its device
KR100643321B1 (ko) * 2004-06-30 2006-11-10 삼성전자주식회사 등화기의 동작 조절장치 및 그 조절방법
US7463679B2 (en) * 2005-06-27 2008-12-09 Intel Corporation Equalizer mode selection based on distribution of symbol error

Also Published As

Publication number Publication date
WO2005114932A1 (en) 2005-12-01
EP1745622A1 (en) 2007-01-24
US20080043829A1 (en) 2008-02-21
KR20070014165A (ko) 2007-01-31

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