ATE434893T1 - Symboltakt-korrekturen in einem mehrträgersystem durch verwendung einer kanalschätzung - Google Patents

Symboltakt-korrekturen in einem mehrträgersystem durch verwendung einer kanalschätzung

Info

Publication number
ATE434893T1
ATE434893T1 AT06737649T AT06737649T ATE434893T1 AT E434893 T1 ATE434893 T1 AT E434893T1 AT 06737649 T AT06737649 T AT 06737649T AT 06737649 T AT06737649 T AT 06737649T AT E434893 T1 ATE434893 T1 AT E434893T1
Authority
AT
Austria
Prior art keywords
timing
carrier system
symbols
channel estimation
symbol clock
Prior art date
Application number
AT06737649T
Other languages
English (en)
Inventor
Ashok Mantravadi
Bojan Vrcelj
Fuyun Ling
Kiran Mukkavilli
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE434893T1 publication Critical patent/ATE434893T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between 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
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation 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
    • H04L25/0202—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
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/025—Channel estimation channel estimation algorithms using least-mean-square [LMS] method

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AT06737649T 2005-03-10 2006-03-10 Symboltakt-korrekturen in einem mehrträgersystem durch verwendung einer kanalschätzung ATE434893T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66090505P 2005-03-10 2005-03-10
PCT/US2006/008490 WO2006099088A2 (en) 2005-03-10 2006-03-10 Symbol timing corrections in a multi carrier system by using the channel estimation

Publications (1)

Publication Number Publication Date
ATE434893T1 true ATE434893T1 (de) 2009-07-15

Family

ID=36601183

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06737649T ATE434893T1 (de) 2005-03-10 2006-03-10 Symboltakt-korrekturen in einem mehrträgersystem durch verwendung einer kanalschätzung

Country Status (12)

Country Link
US (1) US8428001B2 (de)
EP (1) EP1856868B1 (de)
JP (1) JP2008533846A (de)
KR (2) KR101119069B1 (de)
CN (2) CN101164308B (de)
AT (1) ATE434893T1 (de)
BR (1) BRPI0609270A2 (de)
CA (1) CA2600437A1 (de)
DE (1) DE602006007446D1 (de)
RU (1) RU2007137486A (de)
TW (1) TW200704046A (de)
WO (1) WO2006099088A2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7848463B2 (en) * 2005-04-07 2010-12-07 Qualcomm Incorporated Adaptive time-filtering for channel estimation in OFDM system
KR101082659B1 (ko) * 2007-01-05 2011-11-14 콸콤 인코포레이티드 전이적 파일럿 심벌들에 기반한 타이밍 동기화를 위한 방법들 및 장치
US9008198B2 (en) 2007-01-05 2015-04-14 Qualcomm Incorporated Methods and apparatus for timing synchronization based on transitional pilot symbols
CA2677971A1 (en) * 2007-03-05 2008-09-12 Qualcomm Incorporated Timing adjustments for channel estimation in a multi carrier system
US20080219332A1 (en) * 2007-03-05 2008-09-11 Qualcomm Incorporated Apparatus and methods accounting for automatic gain control in a multi carrier system
US8098567B2 (en) * 2007-03-05 2012-01-17 Qualcomm Incorporated Timing adjustments for channel estimation in a multi carrier system
US7830984B2 (en) * 2007-03-30 2010-11-09 Hong Kong Applied Science And Technology Research Institute Co., Ltd. OFDM/OFDMA channel estimation
US7881392B2 (en) * 2007-03-30 2011-02-01 Hong Kong Applied Science And Technology Research Institute Co., Ltd. OFDM/OFDMA timing synchronization using non-consecutive pilot subcarrier assignment
EP2151107B1 (de) * 2007-05-09 2018-03-21 Telefonaktiebolaget LM Ericsson (publ) Empfänger für ein funknetz und verfahren zur bestimmung einer kanalschätzung für einen funkkanal
US8259601B2 (en) * 2007-10-16 2012-09-04 Mediatek Inc. Interference measurement mechanism for frequency reuse in cellular OFDMA systems
US8259828B2 (en) * 2008-02-12 2012-09-04 Mediatek Inc. Sub-carrier alignment mechanism for OFDM multi-carrier systems
JP5153395B2 (ja) * 2008-03-17 2013-02-27 株式会社日立製作所 セルラ無線通信システムの基地局および移動局
US20090268710A1 (en) * 2008-04-23 2009-10-29 Motorola, Inc. Uplink synchronization without periodic ranging in a communication system
US8265214B2 (en) * 2008-07-01 2012-09-11 Qualcomm Incorporated Method and apparatus for adaptive timing synchronization in a communication network
US8891350B2 (en) * 2008-07-07 2014-11-18 Mediatek Inc. Method and apparatus of data transmission over guard sub-carriers in multi-carrier OFDM systems
US8416733B2 (en) * 2009-06-30 2013-04-09 Qualcomm Incorporated Time tracking loops for a communication system utilizing a cyclic prefix
CN101662446B (zh) * 2009-09-28 2013-01-16 中兴通讯股份有限公司 信道估计方法及装置
KR101579984B1 (ko) * 2009-10-22 2016-01-04 삼성전자주식회사 통신 시스템에서 이동 단말의 추정 속도 복원 방법 및 장치
US8750089B2 (en) * 2010-01-05 2014-06-10 Broadcom Corporation Method and system for iterative discrete fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques
US20130107785A1 (en) * 2011-11-02 2013-05-02 Qualcomm Incorporated Tracking loop enhancements for mitigating signal interference and adjusting signal power
EP2595352B1 (de) * 2011-11-18 2014-04-09 Cambridge Silicon Radio Limited Verfahren und Vorrichtung zur verbesserten Kanalschätzung unter Verwendung einer frame-basierten Kompensation der Kanaländerungen
US9191256B2 (en) 2012-12-03 2015-11-17 Digital PowerRadio, LLC Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems
KR102603921B1 (ko) 2015-12-03 2023-11-20 삼성전자주식회사 복수의 컴포넌트 캐리어를 처리하는 신호 처리 방법 및 그 장치
JP7004062B2 (ja) 2018-03-09 2022-01-21 日本電気株式会社 無線装置及びチャネル予測方法
US10715247B2 (en) * 2018-06-06 2020-07-14 Gilat Satellite Networks Ltd. Dynamic receiver
KR102790783B1 (ko) * 2019-12-26 2025-04-07 한국전자통신연구원 고속 모바일 수신환경에서의 잡음 레벨 보정을 이용한 채널 복호화 방법 및 이를 위한 장치

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
US5619542A (en) * 1994-08-30 1997-04-08 Motorola, Inc. Device and method for efficient timing estimation in a digital receiver
US5790939A (en) * 1995-06-29 1998-08-04 Hughes Electronics Corporation Method and system of frame timing synchronization in TDMA based mobile satellite communication system
US5912931A (en) * 1996-08-01 1999-06-15 Nextel Communications Method for multicarrier signal detection and parameter estimation in mobile radio communication channels
US6771590B1 (en) * 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
US6278754B1 (en) 1996-09-20 2001-08-21 Comsat Corporation Demodulation of asynchronously sampled data by means of detection-transition sample estimation in a shared multi-carrier environment
US5852630A (en) * 1997-07-17 1998-12-22 Globespan Semiconductor, Inc. Method and apparatus for a RADSL transceiver warm start activation procedure with precoding
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
US6456654B1 (en) * 1998-12-22 2002-09-24 Nortel Networks Limited Frame alignment and time domain equalization for communications systems using multicarrier modulation
US6654429B1 (en) * 1998-12-31 2003-11-25 At&T Corp. Pilot-aided channel estimation for OFDM in wireless systems
US6539063B1 (en) * 1999-02-18 2003-03-25 Ibiquity Digital Corporation System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system
US6765894B1 (en) * 1999-07-05 2004-07-20 Matsushita Electric Industrial Co, Ltd. Communication terminal apparatus and base station apparatus
US6587526B1 (en) * 1999-10-12 2003-07-01 Lucent Technologies Inc. Apparatus and method for timing synchronization in OFDM-based wireless systems
JP2001189768A (ja) * 1999-12-28 2001-07-10 Matsushita Electric Ind Co Ltd 同期検波装置
US6771591B1 (en) * 2000-07-31 2004-08-03 Thomson Licensing S.A. Method and system for processing orthogonal frequency division multiplexed signals
GB2369016B (en) * 2000-11-09 2004-06-09 Sony Uk Ltd Receiver
KR100366292B1 (ko) * 2000-11-29 2002-12-31 한국전자통신연구원 핑거의 ｆｉｆｏ 수를 줄이는 심볼 컴바이닝 방법, 이를이용한 레이크 수신기 및 이러한 레이크 수신기를구동시키기 위한 방법
NZ509688A (en) * 2001-02-01 2003-06-30 Ind Res Ltd Maximum likelihood sychronisation (estimating time delay) for wireless digital communications system using a pilot symbol
DE60236220D1 (de) * 2001-03-09 2010-06-10 Qualcomm Inc Verfahren zur Symboltaktsynchronisation in Kommunikationssystemen
EP1408621A4 (de) * 2001-07-13 2006-08-30 Kawasaki Microelectronics Inc Cdma-empfangsvorrichtung und cdma-empfangsverfahren
US7440030B2 (en) * 2001-09-24 2008-10-21 Broadcom Corporation Method and apparatus for interlaced display of progressive video content
US7161987B2 (en) * 2001-09-26 2007-01-09 Conexant, Inc. Single-carrier to multi-carrier wireless architecture
CA2405322A1 (en) * 2001-09-28 2003-03-28 Telecommunications Research Laboratories Channel code decoding for the cdma forward link
JP3831229B2 (ja) * 2001-10-31 2006-10-11 富士通株式会社 伝搬路特性推定装置
AU2002349638A1 (en) * 2001-11-20 2003-06-10 Sanyo Electric Co., Ltd. Radio reception apparatus, symbol timing control method, and symbol timing control program
EP1317107B1 (de) 2001-11-30 2005-08-03 Freescale Semiconductor, Inc. Transientenkompensation für Leistungverstärker in OFDM-Systemen
JP2003319005A (ja) 2002-02-20 2003-11-07 Mitsubishi Electric Corp シンボルタイミング補正回路、受信機、シンボルタイミング補正方法、及び復調処理方法
WO2004045178A2 (en) * 2002-11-12 2004-05-27 Utstarcom, Inc. Fast symbol timing recovery for transmitted digital data
US7254196B2 (en) * 2002-11-26 2007-08-07 Agere Systems Inc. Symbol timing for MIMO OFDM and other wireless communication systems
JP4470377B2 (ja) * 2003-02-28 2010-06-02 株式会社日立製作所 移動通信システムにおける伝搬路推定方法
KR100542115B1 (ko) * 2003-05-23 2006-01-10 한국전자통신연구원 Ｏｆｄｍａ기반 셀룰러 시스템 기지국의 위상 왜곡 보상장치 및 방법
US6859505B2 (en) * 2003-07-01 2005-02-22 Motorola, Inc. Method, apparatus and system for use in determining pilot-to-data power ratio in wireless communication
CN1581740B (zh) * 2003-08-15 2012-10-17 上海贝尔阿尔卡特股份有限公司 Ofdm系统中基于pn序列和导频的反馈型信道估计方法及装置
US7680094B2 (en) * 2003-09-29 2010-03-16 Alcatel-Lucent Usa Inc. Method of aligning physical channels for uplink transmission
US7251283B2 (en) * 2003-10-20 2007-07-31 Mediatek, Inc. Timing offset compensation in orthogonal frequency division multiplexing systems
US7026873B2 (en) * 2003-11-07 2006-04-11 Scintera Networks LMS-based adaptive pre-distortion for enhanced power amplifier efficiency
US7787357B2 (en) * 2003-12-18 2010-08-31 Motorola, Inc. OFDM frequency offset estimation apparatus and method
WO2005064810A1 (en) * 2003-12-23 2005-07-14 Koninklijke Philips Electronics N.V. Umts receiver symbol synchronization
US20050141657A1 (en) * 2003-12-30 2005-06-30 Maltsev Alexander A. Adaptive channel equalizer for wireless system
US7609786B2 (en) * 2004-01-28 2009-10-27 Qualcomm Incorporated Channel estimation for a communication system using spectral estimation
US7701917B2 (en) * 2004-02-05 2010-04-20 Qualcomm Incorporated Channel estimation for a wireless communication system with multiple parallel data streams
US8077691B2 (en) 2004-03-05 2011-12-13 Qualcomm Incorporated Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
US7457231B2 (en) * 2004-05-04 2008-11-25 Qualcomm Incorporated Staggered pilot transmission for channel estimation and time tracking
TWI279998B (en) * 2004-05-25 2007-04-21 Realtek Semiconductor Corp Adaptive channel estimation method for multi-carrier communication system
US20060104380A1 (en) * 2004-11-17 2006-05-18 Texas Instruments Incorporated Time-switched preamble generation to enhance channel estimation signal-to-noise ratio in MIMO communication systems
US8175123B2 (en) 2005-03-10 2012-05-08 Qualcomm Incorporated Collection window positioning using time tracking information
JP4610401B2 (ja) 2005-04-13 2011-01-12 株式会社エヌ・ティ・ティ・ドコモ チャネル推定装置
JP2006352746A (ja) * 2005-06-20 2006-12-28 Fujitsu Ltd 直交周波数分割多重伝送用受信機
US20070023063A1 (en) * 2005-07-27 2007-02-01 Sharon Deuel Comb with a ball level and indicia
US20070230635A1 (en) * 2006-04-03 2007-10-04 Leif Wilhelmsson Wireless communication reception with cooperation between agc and digital baseband
EP2031783A1 (de) 2006-08-03 2009-03-04 Panasonic Corporation Empfangsgerät, empfangsverfahren und integrierte schaltung
US8619746B2 (en) * 2006-10-10 2013-12-31 Qualcomm Incorporated Channel estimation for multi-carrier communication
US20080219332A1 (en) * 2007-03-05 2008-09-11 Qualcomm Incorporated Apparatus and methods accounting for automatic gain control in a multi carrier system
US8098567B2 (en) * 2007-03-05 2012-01-17 Qualcomm Incorporated Timing adjustments for channel estimation in a multi carrier system

Also Published As

Publication number Publication date
KR20070118250A (ko) 2007-12-14
CN101164308A (zh) 2008-04-16
US8428001B2 (en) 2013-04-23
EP1856868A2 (de) 2007-11-21
KR100939941B1 (ko) 2010-02-04
WO2006099088A2 (en) 2006-09-21
DE602006007446D1 (de) 2009-08-06
WO2006099088A3 (en) 2006-12-14
KR101119069B1 (ko) 2012-03-20
RU2007137486A (ru) 2009-04-20
JP2008533846A (ja) 2008-08-21
BRPI0609270A2 (pt) 2010-03-09
CN101164308B (zh) 2013-01-30
KR20090019919A (ko) 2009-02-25
EP1856868B1 (de) 2009-06-24
CN102176707A (zh) 2011-09-07
US20060227812A1 (en) 2006-10-12
CA2600437A1 (en) 2006-09-21
CN102176707B (zh) 2014-11-12
TW200704046A (en) 2007-01-16

Similar Documents

Publication Publication Date Title
DE602006007446D1 (de) Symboltakt-Korrekturen in einem Mehrträgersystem durch Verwendung einer Kanalschätzung
CN103929394B (zh) 基于迭代算法的高精度频偏估计方法
WO2011155791A3 (en) Method and apparatus for transmitting csi-rs and data using partial muting of csi-rs
MX2010004538A (es) Metodo de interpolacion y aparato para incrementar la eficiencia de estimacion de diafonia.
EP4262162A3 (de) Kanalerfassung unter verwendung eines orthogonalen zeitfrequenzraummodulierten pilotsignals
WO2008089596A8 (en) Interpolating method for an ofdm system and channel estimation method and apparatus
ATE375667T1 (de) Schnellerer fein-timing-betrieb in einem mehrträgersystem
WO2002028046A3 (en) Residual phase error reduction in ofdm
ATE356482T1 (de) Verfahren für die berechnung von fehlerraten in empfängern unter anwendung von iterativer dekodierung
ATE472882T1 (de) Iterative kanal- und störungsschätzung mit fest zugeordneten pilottönen für ofdma
CN106559370A (zh) 一种低复杂度ofdm‑pon系统采样时钟频率偏差补偿的方法
WO2009114374A3 (en) I/q imbalance estimation using synchronization signals in lte systems
CN105610755B (zh) 一种突发信号的频偏估计方法及装置
WO2007001808A8 (en) Method and system for equalizing received signal in communications systems
TW200718142A (en) Frame synchronization
WO2008145337A3 (en) A method for interference estimation for orthogonal pilot patterns
DE602005005052D1 (de) Verfahren zur auswahl von plug-in-codemodulen in einer datenverarbeitungseinrichtung
US9515851B1 (en) Reduced dimension time domain channel estimation in a wireless communication network
DE602005025405D1 (de) Verfahren und senderstruktur zur verringerung von mehrdeutigkeit durch eine wiederholungsumordnung in der symboldomäne
ATE545252T1 (de) Wiederverwendung einer trainingssequenz zwischen frequenzangrenzenden funksignalen
WO2010075374A3 (en) Extracting information from positioning pilot channel symbols in forward link only system
WO2008152116A3 (en) Improvement of the reliabilty estimation
WO2010076024A3 (en) Process and apparatus for performing initial carrier frequency offset in an ofdm communication system
DE50105475D1 (de) Demodulator für cpfsk-modulierte signale unter verwendung einer linearen näherung des cpfsk-signals
WO2009015354A3 (en) Methods and apparatus for transmitter identification in a wireless network

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties