JP4409634B2 - 自己同期等化方法及びシステム - Google Patents

自己同期等化方法及びシステム Download PDF

Info

Publication number
JP4409634B2
JP4409634B2 JP54153798A JP54153798A JP4409634B2 JP 4409634 B2 JP4409634 B2 JP 4409634B2 JP 54153798 A JP54153798 A JP 54153798A JP 54153798 A JP54153798 A JP 54153798A JP 4409634 B2 JP4409634 B2 JP 4409634B2
Authority
JP
Japan
Prior art keywords
signal
received signal
estimate
dwilsp
channel
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
Application number
JP54153798A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001517399A (ja
JP2001517399A5 (enExample
Inventor
アンダーソン，ソレン
ペリン，ペール
Original Assignee
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）
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 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） filed Critical 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）
Publication of JP2001517399A publication Critical patent/JP2001517399A/ja
Publication of JP2001517399A5 publication Critical patent/JP2001517399A5/ja
Application granted granted Critical
Publication of JP4409634B2 publication Critical patent/JP4409634B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/0328—Arrangements for operating in conjunction with other apparatus with interference cancellation circuitry
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709727—GRAKE type RAKE receivers
    • 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
    • H04L2025/03401—PSK

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
JP54153798A 1997-03-27 1998-03-20 自己同期等化方法及びシステム Expired - Lifetime JP4409634B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/827,169 1997-03-27
US08/827,169 US5937014A (en) 1997-03-27 1997-03-27 Self-synchronizing equalization techniques and systems
PCT/SE1998/000518 WO1998044655A2 (en) 1997-03-27 1998-03-20 Self-synchronizing equalization techniques and systems

Publications (3)

Publication Number Publication Date
JP2001517399A JP2001517399A (ja) 2001-10-02
JP2001517399A5 JP2001517399A5 (enExample) 2006-01-05
JP4409634B2 true JP4409634B2 (ja) 2010-02-03

Family

ID=25248487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54153798A Expired - Lifetime JP4409634B2 (ja) 1997-03-27 1998-03-20 自己同期等化方法及びシステム

Country Status (9)

Country Link
US (2) US5937014A (enExample)
EP (1) EP0970569B1 (enExample)
JP (1) JP4409634B2 (enExample)
CN (2) CN1316754C (enExample)
AU (1) AU6753798A (enExample)
CA (1) CA2285431C (enExample)
DE (1) DE69835349T2 (enExample)
TW (1) TW386325B (enExample)
WO (1) WO1998044655A2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11871190B2 (en) 2019-07-03 2024-01-09 The Board Of Trustees Of The University Of Illinois Separating space-time signals with moving and asynchronous arrays

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6084929A (en) * 1996-12-12 2000-07-04 Ericsson Inc. Method and apparatus for channel tracking
FR2766320B1 (fr) * 1997-07-15 1999-10-15 Thomson Csf Procede et dispositif d'analyse des interferences dans un systeme de radiocommunication cellulaire
SG77607A1 (en) * 1997-08-26 2001-01-16 Univ Singapore A multi-user code division multiple access receiver
BR9812816A (pt) * 1997-09-15 2000-08-08 Adaptive Telecom Inc Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma
US6167039A (en) * 1997-12-17 2000-12-26 Telefonaktiebolget Lm Ericsson Mobile station having plural antenna elements and interference suppression
FI108181B (fi) * 1998-02-13 2001-11-30 Nokia Mobile Phones Ltd Tehonsäätömenetelmä
DE19806616A1 (de) * 1998-02-18 1999-08-19 Cit Alcatel Verfahren und Telekommunikationseinheit zum Aufbau einer Telekommunikationsverbindung in sich überlagernden digitalen Funknetzen
US6130894A (en) * 1998-03-09 2000-10-10 Broadcom Homenetworking, Inc. Off-line broadband network interface
ES2389626T3 (es) 1998-04-03 2012-10-29 Tellabs Operations, Inc. Filtro para acortamiento de respuesta al impulso, con restricciones espectrales adicionales, para transmisión de múltiples portadoras
DE69829360T2 (de) * 1998-04-03 2006-04-13 Lucent Technologies Inc. Richtungsbestimmung in einem zellularen mobilen Kommunikationssystem
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
CA2269925C (en) * 1998-04-30 2004-02-03 Lucent Technologies Inc. Iterative channel estimation
AT407933B (de) * 1998-06-09 2001-07-25 Juha Dipl Ing Laurila Verfahren zur trennung und zur detektion von gleichkanal-signalen
US6795424B1 (en) 1998-06-30 2004-09-21 Tellabs Operations, Inc. Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems
GB2339120B (en) * 1998-06-30 2003-03-19 Nec Technologies Channel estimation device for digital telecommunications stations
EP0981206B1 (en) * 1998-08-19 2005-11-23 Siemens Aktiengesellschaft Spread spectrum receiver with reduction of intersymbol interference
US6163524A (en) * 1998-10-19 2000-12-19 Telefonaktiebolaget Lm Ericsson (Publ) Code allocation in CDMA
US6304750B1 (en) * 1998-11-06 2001-10-16 Lucent Technologies Inc. Space-time diversity receiver for wireless systems
GB9900340D0 (en) * 1999-01-09 1999-02-24 Motorola Ltd A method of and system for estimating a time of arrival of a radio signal
US6470044B1 (en) * 1999-01-15 2002-10-22 Sharp Laboratories Of America, Inc. Computationally parsimonious forward link receiver for DS-CDMA systems and method for same
JP3149868B2 (ja) * 1999-02-24 2001-03-26 日本電気株式会社 Ｃｄｍａ受信装置の受信パス・サーチ方法およびサーチャー回路
US7027537B1 (en) * 1999-03-05 2006-04-11 The Board Of Trustees Of The Leland Stanford Junior University Iterative multi-user detection
US6687317B1 (en) 1999-04-16 2004-02-03 Koninklijke Philips Electronics N.V. Method for correlation directed echo cancellation and channel equalization for the digital transmission link in vestigial side band amplitude modulation
DE19920819C1 (de) * 1999-05-06 2000-10-26 Bosch Gmbh Robert Verfahren und Vorrichtung zur Schätzung von gedächtnisbehafteten Übertragungskanälen
US6765894B1 (en) 1999-07-05 2004-07-20 Matsushita Electric Industrial Co, Ltd. Communication terminal apparatus and base station apparatus
US6628706B1 (en) 1999-12-06 2003-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for transforming a channel estimate
WO2001073690A2 (en) * 2000-03-29 2001-10-04 Provar Inc. System and method for georeferencing digital raster maps
US7148898B1 (en) * 2000-03-29 2006-12-12 Sourceprose Corporation System and method for synchronizing raster and vector map images
US7038681B2 (en) * 2000-03-29 2006-05-02 Sourceprose Corporation System and method for georeferencing maps
EP1150441B1 (en) * 2000-04-25 2014-03-26 Alcatel Lucent Method and receiver for combining at least two received signals of a telecommunication system
US6625454B1 (en) 2000-08-04 2003-09-23 Wireless Valley Communications, Inc. Method and system for designing or deploying a communications network which considers frequency dependent effects
US6507604B1 (en) * 2000-08-31 2003-01-14 Wen-Yi Kuo Rake receiver for CDMA wireless communications
US6973622B1 (en) * 2000-09-25 2005-12-06 Wireless Valley Communications, Inc. System and method for design, tracking, measurement, prediction and optimization of data communication networks
US6975672B2 (en) * 2001-01-08 2005-12-13 Ericsson Inc. Apparatus and methods for intersymbol interference compensation in spread spectrum communications
US20020136331A1 (en) * 2001-01-24 2002-09-26 Leif Wilhelmsson Method and apparatus for performing channel estimation with a limiting receiver
US7751469B2 (en) 2001-02-20 2010-07-06 Massachusetts Institute Of Technology Correlation shaping matched filter receiver
US7636403B2 (en) 2001-02-20 2009-12-22 Massachusetts Institute Of Technology Correlation shaping multi-signature receiver
US20020181407A1 (en) * 2001-03-28 2002-12-05 Anders Khullar Link quality control by using time dispersion information
US6483459B1 (en) * 2001-04-05 2002-11-19 Neoreach, Inc. Direction of arrival angle tracking algorithm for smart antennas
US6944460B2 (en) * 2001-06-07 2005-09-13 Telefonaktiebolaget L M Ericsson (Publ) System and method for link adaptation in communication systems
US7440489B2 (en) 2001-08-07 2008-10-21 Ericsson Inc. Method and apparatus for selective demodulation and decoding of communications signals
EP1284562A1 (de) 2001-08-16 2003-02-19 Alcatel Verfahren, Empfänger und Empfangsstation zum Entzerren eines Empfangssignals
GB0124952D0 (en) * 2001-10-17 2001-12-05 Nokia Corp A receiver and a receiving method
US6844854B2 (en) * 2002-04-05 2005-01-18 Myers & Johnson, Inc. Interferometric antenna array for wireless devices
US6947403B2 (en) * 2003-06-27 2005-09-20 Nokia Corporation Advanced whitener-rake receiver for WCDMA terminal
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
WO2007100186A1 (en) 2006-03-02 2007-09-07 Lg Electronics Inc. Digital broadcasting system and method of processing data
FI20065838A0 (fi) * 2006-12-21 2006-12-21 Nokia Corp Radiovastaanotinalgoritmi
US20110080526A1 (en) * 2009-10-01 2011-04-07 Legend Silicon Corp. multiple tuner terrestrial dtv receiver for indoor and mobile users
US8743658B2 (en) * 2011-04-29 2014-06-03 Siemens Corporation Systems and methods for blind localization of correlated sources
US9401826B2 (en) * 2012-02-17 2016-07-26 Sony Corporation Signal processing unit employing a blind channel estimation algorithm and method of operating a receiver apparatus
US9660743B1 (en) * 2014-08-27 2017-05-23 Marvell International Ltd. Channel estimation by searching over channel response candidates having dominant components
TWI793486B (zh) * 2020-12-28 2023-02-21 智原科技股份有限公司 通訊裝置中的回音消除裝置及其回音消除方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5862192A (en) * 1991-12-31 1999-01-19 Lucent Technologies Inc. Methods and apparatus for equalization and decoding of digital communications channels using antenna diversity
US5237586A (en) * 1992-03-25 1993-08-17 Ericsson-Ge Mobile Communications Holding, Inc. Rake receiver with selective ray combining
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
GB2268364B (en) * 1992-06-25 1995-10-11 Roke Manor Research Improvements in or relating to radio communication systems
US5818876A (en) * 1993-02-01 1998-10-06 Motorola, Inc. Method and apparatus of adaptive maximum likelihood sequence estimation using a variable convergence step size
JP2570967B2 (ja) * 1993-07-08 1997-01-16 日本電気株式会社 Ｃｄｍａ受信機
US5488635A (en) * 1993-10-29 1996-01-30 General Electric Company Low complexity adaptive equalizer radio receiver employing reduced complexity branch metric calculation
FR2712693B1 (fr) * 1993-11-17 1995-12-15 Commissariat Energie Atomique Dispositif de détection de rayonnement, à éléments de détection aboutés, et procédé de fabrication de ce dispositif.
EP0654925B1 (de) * 1993-11-23 2001-05-16 Ascom Systec AG Verfahren und Vorrichtung zur Nachführung der Stossantwort eines frequenzselektiven Kanals
FI943249A7 (fi) * 1994-07-07 1996-01-08 Nokia Corp Menetelmä vastaanottimen ohjaamiseksi ja vastaanotin
JP3095065B2 (ja) * 1997-09-11 2000-10-03 日本電気株式会社 スペクトル拡散信号のレイク受信方法およびレイク受信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11871190B2 (en) 2019-07-03 2024-01-09 The Board Of Trustees Of The University Of Illinois Separating space-time signals with moving and asynchronous arrays

Also Published As

Publication number Publication date
WO1998044655A2 (en) 1998-10-08
CN1211945C (zh) 2005-07-20
JP2001517399A (ja) 2001-10-02
AU6753798A (en) 1998-10-22
DE69835349D1 (de) 2006-09-07
TW386325B (en) 2000-04-01
WO1998044655A3 (en) 1999-03-11
EP0970569A2 (en) 2000-01-12
CA2285431A1 (en) 1998-10-08
US6148023A (en) 2000-11-14
CA2285431C (en) 2006-04-11
US5937014A (en) 1999-08-10
CN1257626A (zh) 2000-06-21
CN1516353A (zh) 2004-07-28
CN1316754C (zh) 2007-05-16
EP0970569B1 (en) 2006-07-26
DE69835349T2 (de) 2007-08-23

Similar Documents

Publication Publication Date Title
JP4409634B2 (ja) 自己同期等化方法及びシステム
US6944245B2 (en) Multi-pass interference reduction in a GSM communication system
US6603827B2 (en) Method and apparatus for digital symbol detection using medium response estimates
US6314147B1 (en) Two-stage CCI/ISI reduction with space-time processing in TDMA cellular networks
US7949304B2 (en) Interference cancellation and receive diversity for single-valued modulation receivers
JP4343694B2 (ja) 送信チャネル間のゲインオフセットを決定する方法
JP3392877B2 (ja) 通信システムにおける信号対ノイズ込み干渉電力比（ｓｉｎｒ）を決定する方法およびシステム
EP0605955B1 (en) Method and apparatus for compensating multipath fading and simulcast interference in a radio signal
US5499272A (en) Diversity receiver for signals with multipath time dispersion
US7308056B2 (en) Joint channel estimator for synchronous and asynchronous interference suppression in SAIC receiver
US7010069B2 (en) Method for co-channel interference identification and mitigation
JP2003110474A (ja) 複数アンテナ時間分散システムにおける受信機による信号検出
EP0430481A2 (en) Method and apparatus for diversity reception of time-dispersed signals
KR100386797B1 (ko) 일반화된직접업데이트비터비등화기
JPH10507598A (ja) Ｔｄｍａシステムにおける信号検出方法
US7149255B2 (en) Method to increase the bit rate in a communications system
US7577190B2 (en) Method for prediction of a channel coefficient
US6847690B1 (en) Determinant-based synchronization techniques and systems
Hafeez et al. Co-channel interference cancellation for D-AMPS hand set
Xavier et al. Blind source separation, ISI cancellation and carrier phase recovery in SDMA systems for mobile communications
Crozier et al. An adaptive maximum likelihood sequence estimation technique for wideband HF communications
Ng et al. Bandwidth-efficient pilot-symbol-aided technique for multipath-fading channels
Paulraj Smart antennas for battlefield multimedia wireless networks with dual use applications
MXPA99008836A (en) Self-synchronizing equalization techniques and systems
Casas et al. BERG LITERATURE SURVEY

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050318

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050318

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080317

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080617

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20080827

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20081006

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081121

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091020

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091112

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131120

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term