JP2007507978A - 携帯受信器の効率の良いフレームトラッキング - Google Patents
携帯受信器の効率の良いフレームトラッキング Download PDFInfo
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- 238000000034 method Methods 0.000 claims abstract description 40
- 239000013598 vector Substances 0.000 claims abstract description 20
- 238000012937 correction Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000012549 training Methods 0.000 claims abstract description 9
- 238000009825 accumulation Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000875 corresponding effect Effects 0.000 abstract description 3
- 230000002596 correlated effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 12
- 230000033001 locomotion Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005562 fading Methods 0.000 description 7
- 230000035508 accumulation Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000013075 data extraction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/708—Parallel implementation
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
- H04B1/7095—Sliding correlator type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70754—Setting of search window, i.e. range of code offsets to be searched
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Frame_Sync_Correction=FSP位置−フレームオフセット 式3
Claims (13)
- マルチパス環境下でデータがフレーム単位で送信される無線通信システムにおける受信器のフレーム同期方法において、
所定ウィンドウサイズのデータサンプルを抽出するステップと、
所与のセルパラメータに対応するトレーニングシーケンスを生成するステップと、
前記フレームの開始を定める第1有効パスの位置を探索するために、相異なるラグにわたり前記データと前記トレーニングシーケンスとの相関をとるステップと、
少なくとも1つの累算ベクトルを生成するために、前回からのを除いたフレームオフセットごとに1回ずつ、N回前記相関データを累算するステップと、
前記累算ベクトルのうちの最大値である最有効パス値と、該最有効パスの位置とを一緒に決定するステップと、
前記第1有効パス位置と前記フレームオフセットの差分に基づいてフレーム同期補正値を計算するステップと、
前記フレーム同期補正値に基づいて前記フレーム同期を調整するステップと
を含むことを特徴とする無線通信システムにおける受信器のフレーム同期方法。 - チップレートの2倍の割合で前記抽出データサンプルを偶サンプルおよび奇サンプルに分離するステップと、
前記奇サンプルとは別個に前記偶サンプルの相関をとるステップと
をさらに含むことを特徴とする請求項1に記載の方法。 - 前記決定するステップが、
累算データ値の平均に等しい暫定ノイズ推定値を計算するステップと、
前記暫定ノイズ推定値の倍数に等しい暫定ノイズ閾値を計算するステップと、
前記暫定ノイズ閾値よりも小さい累算データ値の平均に等しい最終ノイズ推定値を計算するステップと、
前記最終ノイズ推定値の倍数に等しい最終ノイズ閾値を計算するステップと、
前記最有効パス値が前記最終ノイズ閾値よりも大きい場合に前記最有効パスが有効であると判定するステップと
を含むことを特徴とする請求項1に記載の方法。 - 前記調整するステップは、前記フレーム同期補正値が正の場合に前記フレーム同期を遅らせるステップを含むことを特徴とする請求項1に記載の方法。
- 前記調整するステップは、前記フレーム同期補正値が負の場合に前記フレーム同期を早めるステップを含むことを特徴とする請求項1に記載の方法。
- 無線通信システム用無線送受信ユニットにおいて、
入力信号を受信し該入力信号を偶サンプルおよび奇サンプルに分離する抽出分離部と、
それぞれ前記抽出分離部に接続された、偶サンプル処理を行う2個の偶ミッドアンブルコリレータと、
前記偶ミッドアンブルコリレータの一方に接続された偶サンプル遅延部と、
前記偶ミッドアンブルコリレータの他方および前記偶サンプル遅延部に接続された偶コリレータ加算器と、
前記偶コリレータ加算器に接続された偶サンプルアキュムレータと、
それぞれ前記抽出分離部に接続された、奇サンプル処理を行う2個の奇ミッドアンブルコリレータと、
前記奇ミッドアンブルコリレータの一方に接続された奇サンプル遅延部と、
前記奇ミッドアンブルコリレータの他方および前記奇サンプル遅延部に接続された奇コリレータ加算器と、
前記奇コリレータ加算器に接続された奇サンプルアキュムレータと、
前記偶サンプルアキュムレータおよび前記奇サンプルアキュムレータに接続されたフレームトラッカプロセッサと
を備えたことを特徴とする無線送受信ユニット。 - 前記偶サンプル遅延部および前記奇サンプル遅延部がそれぞれ57チップの遅延を与えることを特徴とする請求項6に記載の無線送受信ユニット。
- 前記フレームトラッカプロセッサが、
第1有効パス位置と、
最有効パス有効性指示と
を出力することを特徴とする請求項6に記載の無線送受信ユニット。 - 前記第1有効パス位置および前記最有効パス有効性指示がフレーム同期のために使用されることを特徴とする請求項8に記載の無線送受信ユニット。
- 無線通信システム用集積回路において、
入力信号を受信し該入力信号を偶サンプルおよび奇サンプルに分離する抽出分離部と、
それぞれ前記抽出分離部に接続された、偶サンプル処理を行う2個の偶ミッドアンブルコリレータと、
前記偶ミッドアンブルコリレータの一方に接続された偶サンプル遅延部と、
前記偶ミッドアンブルコリレータの他方および前記偶サンプル遅延部に接続された偶コリレータ加算器と、
前記偶コリレータ加算器に接続された偶サンプルアキュムレータと、
それぞれ前記抽出分離部に接続された、奇サンプル処理を行う2個の奇ミッドアンブルコリレータと、
前記奇ミッドアンブルコリレータの一方に接続された奇サンプル遅延部と、
前記奇ミッドアンブルコリレータの他方および前記奇サンプル遅延部に接続された奇コリレータ加算器と、
前記奇コリレータ加算器に接続された奇サンプルアキュムレータと、
前記偶サンプルアキュムレータおよび前記奇サンプルアキュムレータに接続されたフレームトラッカプロセッサと
を備えたことを特徴とする集積回路。 - 前記偶サンプル遅延部および前記奇サンプル遅延部がそれぞれ57チップの遅延を与えることを特徴とする請求項10に記載の集積回路。
- 前記フレームトラッカプロセッサが、
第1有効パス位置と、
最有効パス有効性指示と
を出力することを特徴とする請求項10に記載の集積回路。 - 前記第1有効パス位置および前記最有効パス有効性指示がフレーム同期のために使用されることを特徴とする請求項12に記載の集積回路。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50784803P | 2003-09-30 | 2003-09-30 | |
US10/733,952 US7006840B2 (en) | 2003-09-30 | 2003-12-10 | Efficient frame tracking in mobile receivers |
PCT/US2004/028612 WO2005034394A1 (en) | 2003-09-30 | 2004-09-02 | Efficient frame tracking in mobile receivers |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007507978A true JP2007507978A (ja) | 2007-03-29 |
JP4575921B2 JP4575921B2 (ja) | 2010-11-04 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2006533870A Expired - Fee Related JP4575921B2 (ja) | 2003-09-30 | 2004-09-02 | 携帯受信器の効率の良いフレームトラッキング |
Country Status (9)
Country | Link |
---|---|
US (4) | US7006840B2 (ja) |
EP (1) | EP1668805A4 (ja) |
JP (1) | JP4575921B2 (ja) |
KR (2) | KR100861038B1 (ja) |
CA (1) | CA2540384A1 (ja) |
MX (1) | MXPA06003494A (ja) |
NO (1) | NO20061881L (ja) |
TW (4) | TWI256779B (ja) |
WO (1) | WO2005034394A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100438640C (zh) * | 2002-12-30 | 2008-11-26 | Nxp股份有限公司 | 用于tdd无线通信下行同步跟踪的采样方法及其装置 |
US7006840B2 (en) * | 2003-09-30 | 2006-02-28 | Interdigital Technology Corporation | Efficient frame tracking in mobile receivers |
US7639766B2 (en) * | 2004-09-27 | 2009-12-29 | Via Telecom Co., Ltd. | Combined automatic frequency correction and time track system to minimize sample timing errors |
US7570689B2 (en) * | 2005-02-14 | 2009-08-04 | Interdigital Technology Corporation | Advanced receiver with sliding window block linear equalizer |
CN100512053C (zh) * | 2005-05-24 | 2009-07-08 | 上海原动力通信科技有限公司 | 一种确定时分同步码分多址系统用户信道冲激响应的方法 |
US7616707B2 (en) | 2005-07-08 | 2009-11-10 | Research In Motion Limited | Methods and apparatus for reducing a sampling rate during a sampling phase determination process |
JP4455541B2 (ja) * | 2006-06-19 | 2010-04-21 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局装置および基地局装置並びに上りリンクのユーザ間同期方法 |
KR100978865B1 (ko) | 2007-02-09 | 2010-08-31 | 삼성전자주식회사 | 이동통신 시스템에서의 시스템 정보 송수신 방법 및 장치 |
US9119132B2 (en) * | 2007-10-10 | 2015-08-25 | Qualcomm Incorporated | Efficient system identification schemes for communication systems |
US8472577B2 (en) | 2007-12-19 | 2013-06-25 | Electronics And Telecommunications Research Institute | Apparatus and method for detecting reception signal symbol synchronization in wireless communication system |
US8098630B2 (en) * | 2008-05-09 | 2012-01-17 | Research In Motion Limited | Scanning methods and apparatus for system acquisition |
US8116354B2 (en) * | 2008-06-13 | 2012-02-14 | Mediatek Inc. | Sync detection device and method for GNSS |
US8594244B2 (en) * | 2009-04-06 | 2013-11-26 | Mediatek Inc. | Data signal phase reversal correction method and system implementing the same |
US8750245B2 (en) | 2010-02-26 | 2014-06-10 | Blackberry Limited | Methods and apparatus for use in initiating vertical handover based on comparative evaluation of WLAN and WWAN signal qualities |
US10271293B2 (en) | 2011-11-18 | 2019-04-23 | Apple Inc. | Group formation within a synchronized hierarchy of peer-to-peer devices |
US9516615B2 (en) | 2011-11-18 | 2016-12-06 | Apple Inc. | Selection of synchronization stations in a peer-to-peer network environment |
US9473574B2 (en) | 2011-11-18 | 2016-10-18 | Apple Inc. | Synchronization of devices in a peer-to-peer network environment |
KR101741512B1 (ko) * | 2013-12-19 | 2017-05-31 | 한국해양과학기술원 | 패킷 통신용 수신기의 채널 등화 및 수신 데이터 결정 장치 및 방법 |
US20190065431A1 (en) * | 2017-08-31 | 2019-02-28 | Qualcomm Incorporated | Providing zero-overhead frame synchronization using synchronization strobe polarity for soundwire extension buses |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003333011A (ja) * | 2002-05-16 | 2003-11-21 | Japan Telecom Co Ltd | シンボルタイミング同期装置およびシンボルタイミング同期方法 |
WO2003098827A1 (fr) * | 2002-05-22 | 2003-11-27 | Matsushita Electric Industrial Co., Ltd. | Dispositif de reception et procede permettant de detecter une voie principale dans un profil de retard |
Family Cites Families (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US190603A (en) * | 1877-05-08 | Improvement in apparatus for supplying hydrocarbon oil to water under pressure | ||
US57506A (en) * | 1866-08-28 | Improvement in pipe-tongs | ||
US142764A (en) * | 1873-09-16 | Improvement in bustles | ||
US114560A (en) * | 1871-05-09 | Improvement in curtain-cord retainers | ||
US71198A (en) * | 1867-11-19 | Improvement in hay-rakers and loaders | ||
US179698A (en) * | 1876-07-11 | Improvement in combination unions for wrought-iron pipes | ||
US184570A (en) * | 1876-11-21 | John bailey | ||
US252668A (en) * | 1882-01-24 | Clock-movement | ||
US210750A (en) * | 1878-12-10 | Improvement in gas-regulators | ||
US153360A (en) * | 1874-07-21 | Improvement in machines for making boot and shoe heels | ||
US5680421A (en) * | 1995-02-27 | 1997-10-21 | Oki Electric Industry Co., Ltd. | Frame synchronization apparatus |
ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
US6885652B1 (en) * | 1995-06-30 | 2005-04-26 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
US5701345A (en) * | 1996-03-25 | 1997-12-23 | Delco Electronics Corporation | Multipath interference reduction system and method |
TW465234B (en) * | 1997-02-18 | 2001-11-21 | Discovision Ass | Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing |
JP4386574B2 (ja) * | 1997-10-10 | 2009-12-16 | クゥアルコム・インコーポレイテッド | マルチユーザ通信システムにおけるマルチレイヤードpnコード拡散 |
US6556685B1 (en) * | 1998-11-06 | 2003-04-29 | Harman Music Group | Companding noise reduction system with simultaneous encode and decode |
US6775260B1 (en) * | 1999-02-25 | 2004-08-10 | Texas Instruments Incorporated | Space time transmit diversity for TDD/WCDMA systems |
US6356528B1 (en) * | 1999-04-15 | 2002-03-12 | Qualcomm Incorporated | Interleaver and deinterleaver for use in a diversity transmission communication system |
DE19917337C2 (de) * | 1999-04-16 | 2002-02-28 | Infineon Technologies Ag | Verfahren und Einrichtung zum Synchronisieren eines Mobilfunkempfängers mit einer Rahmenstruktur eines Funksignals |
US6650698B1 (en) * | 1999-09-29 | 2003-11-18 | Conexant Systems, Inc. | Non-linear equalization for the upstream data connection of 56K PCM modems |
JP3368879B2 (ja) * | 1999-12-22 | 2003-01-20 | 三菱電機株式会社 | マルチパスノイズ除去装置、オーディオ出力装置およびfm受信機 |
US6650694B1 (en) * | 2000-02-18 | 2003-11-18 | Texas Instruments Incorporated | Correlator co-processor for CDMA RAKE receiver operations |
TW540200B (en) * | 2000-11-09 | 2003-07-01 | Interdigital Tech Corp | Single user detection |
JP3510589B2 (ja) * | 2000-12-15 | 2004-03-29 | Necエレクトロニクス株式会社 | セルサーチ方法およびセルサーチ装置 |
US7801247B2 (en) * | 2001-05-01 | 2010-09-21 | Texas Instruments Incorporated | Multiple input, multiple output system and method |
US20030026363A1 (en) * | 2001-07-31 | 2003-02-06 | Jan Stoter | Adaptive automatic gain control |
US6456648B1 (en) * | 2001-10-01 | 2002-09-24 | Interdigital Technology Corporation | Code tracking loop with automatic power normalization |
US6772100B2 (en) * | 2001-12-17 | 2004-08-03 | Lockheed Martin Corporation | Multipath mitigation filter |
US7046978B2 (en) * | 2002-02-08 | 2006-05-16 | Qualcomm, Inc. | Method and apparatus for transmit pre-correction in wireless communications |
US6651001B2 (en) * | 2002-03-18 | 2003-11-18 | Micrologics, Inc. | Method of and system and apparatus for integrating maintenance vehicle and service personnel tracking information with the remote monitoring of the location, status, utilization and condition of widely geographically dispersed fleets of vehicular construction equipment and the like to be maintained, and providing and displaying together both construction and maintenance vehicle information |
US7321610B2 (en) * | 2002-03-19 | 2008-01-22 | Industrial Technology Research Institute | Method and system of interference cancellation in multi-cell CDMA systems |
US7286481B2 (en) * | 2002-12-17 | 2007-10-23 | Intel Corporation | Wireless network adapted to transmit channel side information and method thereof |
CN100438640C (zh) * | 2002-12-30 | 2008-11-26 | Nxp股份有限公司 | 用于tdd无线通信下行同步跟踪的采样方法及其装置 |
EP1978662A1 (en) * | 2003-02-05 | 2008-10-08 | Interdigital Technology Corporation | Initial cell search in wireless communication systems |
US7221722B2 (en) * | 2003-02-27 | 2007-05-22 | Motorola, Inc. | Method and apparatus for reducing interference within a communication system |
US7006840B2 (en) * | 2003-09-30 | 2006-02-28 | Interdigital Technology Corporation | Efficient frame tracking in mobile receivers |
US7639766B2 (en) * | 2004-09-27 | 2009-12-29 | Via Telecom Co., Ltd. | Combined automatic frequency correction and time track system to minimize sample timing errors |
US7570689B2 (en) * | 2005-02-14 | 2009-08-04 | Interdigital Technology Corporation | Advanced receiver with sliding window block linear equalizer |
WO2007075559A2 (en) * | 2005-12-22 | 2007-07-05 | Interdigital Technology Corporation | Method and system for adjusting uplink transmission timing for long term evolution handover |
-
2003
- 2003-12-10 US US10/733,952 patent/US7006840B2/en not_active Expired - Fee Related
-
2004
- 2004-09-02 KR KR1020067007996A patent/KR100861038B1/ko not_active IP Right Cessation
- 2004-09-02 WO PCT/US2004/028612 patent/WO2005034394A1/en active Application Filing
- 2004-09-02 KR KR1020067008493A patent/KR100980747B1/ko not_active IP Right Cessation
- 2004-09-02 EP EP04782998A patent/EP1668805A4/en not_active Withdrawn
- 2004-09-02 MX MXPA06003494A patent/MXPA06003494A/es unknown
- 2004-09-02 CA CA002540384A patent/CA2540384A1/en not_active Abandoned
- 2004-09-02 JP JP2006533870A patent/JP4575921B2/ja not_active Expired - Fee Related
- 2004-09-03 TW TW093126806A patent/TWI256779B/zh not_active IP Right Cessation
- 2004-09-03 TW TW102128900A patent/TW201421930A/zh unknown
- 2004-09-03 TW TW098102114A patent/TW200952369A/zh unknown
- 2004-09-03 TW TW094109202A patent/TWI394386B/zh not_active IP Right Cessation
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2005
- 2005-04-20 US US11/110,164 patent/US7603133B2/en not_active Expired - Fee Related
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2006
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003333011A (ja) * | 2002-05-16 | 2003-11-21 | Japan Telecom Co Ltd | シンボルタイミング同期装置およびシンボルタイミング同期方法 |
WO2003098827A1 (fr) * | 2002-05-22 | 2003-11-27 | Matsushita Electric Industrial Co., Ltd. | Dispositif de reception et procede permettant de detecter une voie principale dans un profil de retard |
Also Published As
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TWI256779B (en) | 2006-06-11 |
NO20061881L (no) | 2006-06-23 |
TW200513051A (en) | 2005-04-01 |
TW200952369A (en) | 2009-12-16 |
US20140254635A1 (en) | 2014-09-11 |
KR20060073646A (ko) | 2006-06-28 |
EP1668805A1 (en) | 2005-05-31 |
US7603133B2 (en) | 2009-10-13 |
JP4575921B2 (ja) | 2010-11-04 |
US8738054B2 (en) | 2014-05-27 |
KR100980747B1 (ko) | 2010-09-07 |
EP1668805A4 (en) | 2007-03-28 |
TWI394386B (zh) | 2013-04-21 |
CA2540384A1 (en) | 2005-04-14 |
US20050197160A1 (en) | 2005-09-08 |
KR20060054493A (ko) | 2006-05-22 |
WO2005034394A1 (en) | 2005-04-14 |
KR100861038B1 (ko) | 2008-10-01 |
MXPA06003494A (es) | 2006-06-08 |
US7006840B2 (en) | 2006-02-28 |
TW200614710A (en) | 2006-05-01 |
US20050070318A1 (en) | 2005-03-31 |
TW201421930A (zh) | 2014-06-01 |
US20100027526A1 (en) | 2010-02-04 |
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