DE69329893D1 - Verfahren und Einrichtung zur Kompensation von Mehrwegeschwund und von Gleichwellenstörungen in einem Funksignal - Google Patents

Verfahren und Einrichtung zur Kompensation von Mehrwegeschwund und von Gleichwellenstörungen in einem Funksignal

Info

Publication number
DE69329893D1
DE69329893D1 DE69329893T DE69329893T DE69329893D1 DE 69329893 D1 DE69329893 D1 DE 69329893D1 DE 69329893 T DE69329893 T DE 69329893T DE 69329893 T DE69329893 T DE 69329893T DE 69329893 D1 DE69329893 D1 DE 69329893D1
Authority
DE
Germany
Prior art keywords
data
symbols
signal
pilot
impulse response
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 - Fee Related
Application number
DE69329893T
Other languages
English (en)
Other versions
DE69329893T2 (de
Inventor
Robert Frank Marchetto
Todd Alan Stewart
Paul Kar-Ming Ho
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.)
Glenayre Electronics Inc
Original Assignee
Glenayre Electronics 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 Glenayre Electronics Inc filed Critical Glenayre Electronics Inc
Publication of DE69329893D1 publication Critical patent/DE69329893D1/de
Application granted granted Critical
Publication of DE69329893T2 publication Critical patent/DE69329893T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
DE69329893T 1993-01-06 1993-11-24 Verfahren und Einrichtung zur Kompensation von Mehrwegeschwund und von Gleichwellenstörungen in einem Funksignal Expired - Fee Related DE69329893T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/001,061 US5414734A (en) 1993-01-06 1993-01-06 Compensation for multi-path interference using pilot symbols

Publications (2)

Publication Number Publication Date
DE69329893D1 true DE69329893D1 (de) 2001-03-01
DE69329893T2 DE69329893T2 (de) 2001-08-23

Family

ID=21694196

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69329893T Expired - Fee Related DE69329893T2 (de) 1993-01-06 1993-11-24 Verfahren und Einrichtung zur Kompensation von Mehrwegeschwund und von Gleichwellenstörungen in einem Funksignal

Country Status (10)

Country Link
US (1) US5414734A (de)
EP (2) EP0605955B1 (de)
CN (1) CN1093847A (de)
AT (1) ATE198965T1 (de)
AU (1) AU7253694A (de)
CA (2) CA2109737A1 (de)
DE (1) DE69329893T2 (de)
FI (1) FI965244A (de)
IN (1) IN182075B (de)
WO (1) WO1996001004A1 (de)

Families Citing this family (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37802E1 (en) 1992-03-31 2002-07-23 Wi-Lan Inc. Multicode direct sequence spread spectrum
DE4311604C1 (de) * 1993-04-08 1994-07-28 Ant Nachrichtentech Zuverlässigkeitsgesteuerte Datendetektion in Empfängern für TDMA-Mobilfunksysteme
US5404376A (en) * 1993-09-09 1995-04-04 Ericsson-Ge Mobile Communications Inc. Navigation assistance for call handling in mobile telephone systems
US5666378A (en) * 1994-03-18 1997-09-09 Glenayre Electronics, Inc. High performance modem using pilot symbols for equalization and frame synchronization
US5592514A (en) * 1995-03-08 1997-01-07 Lucent Technologies Inc. Method of performing signal reconstruction at the receiving end of a communications system, such as for GSM
US5651010A (en) * 1995-03-16 1997-07-22 Bell Atlantic Network Services, Inc. Simultaneous overlapping broadcasting of digital programs
US5852612A (en) * 1995-03-16 1998-12-22 Bell Atlantic Network Services, Inc. Terminal for receiving simulcast digital video programs
US5568522A (en) * 1995-03-20 1996-10-22 General Electric Company Correction of multipath distortion in wideband carrier signals
US5712877A (en) * 1995-05-26 1998-01-27 Simon Fraser University Pilot-symbol aided continuous phase modulation system
US6222830B1 (en) * 1995-08-25 2001-04-24 Qualcomm Incorporated Communication system using repeated data selection
US5960032A (en) * 1995-09-20 1999-09-28 The Hong Kong University Of Science & Technology High speed data transmission using expanded bit durations in multiple parallel coded data streams
US6018651A (en) * 1995-11-29 2000-01-25 Motorola, Inc. Radio subscriber unit having a switched antenna diversity apparatus and method therefor
US6023615A (en) * 1995-11-29 2000-02-08 Motorola, Inc. Method for controlling a diversity receiver apparatus in a radio subscriber unit
US5748677A (en) * 1996-01-16 1998-05-05 Kumar; Derek D. Reference signal communication method and system
GB2309864A (en) * 1996-01-30 1997-08-06 Sony Corp An equalizer and modulator using a training sequence and multiple correlation with a stored copy of the sequence
US5887037A (en) * 1996-02-27 1999-03-23 Lucent Technologies Inc. Introducing processing delay as a multiple of the time slot duration
US5790598A (en) * 1996-03-01 1998-08-04 Her Majesty The Queen In Right Of Canada Block decision feedback equalizer
JP2809179B2 (ja) * 1996-03-14 1998-10-08 日本電気株式会社 無線同報通信システム
JP2820919B2 (ja) 1996-03-25 1998-11-05 株式会社ワイ・アール・ピー移動通信基盤技術研究所 Ｃｄｍａ移動体通信システムおよび送受信機
US5737327A (en) * 1996-03-29 1998-04-07 Motorola, Inc. Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
US5991309A (en) * 1996-04-12 1999-11-23 E.F. Johnson Company Bandwidth management system for a remote repeater network
US5896560A (en) * 1996-04-12 1999-04-20 Transcrypt International/E. F. Johnson Company Transmit control system using in-band tone signalling
US6049720A (en) * 1996-04-12 2000-04-11 Transcrypt International / E.F. Johnson Company Link delay calculation and compensation system
US5901185A (en) * 1996-04-15 1999-05-04 Ericsson Inc. Systems and methods for data-augmented, pilot-symbol-assisted radiotelephone communications
FI962140A (fi) 1996-05-21 1997-11-22 Nokia Telecommunications Oy Menetelmä impulssivasteen estimoimiseksi sekä vastaanotin
US6192068B1 (en) 1996-10-03 2001-02-20 Wi-Lan Inc. Multicode spread spectrum communications system
US6370156B2 (en) 1997-01-31 2002-04-09 Alcatel Modulation/demodulation of a pilot carrier, means and method to perform the modulation/demodulation
US6085103A (en) * 1997-02-19 2000-07-04 Ericsson, Inc. Compensating for fading in analog AM radio signals
US6236675B1 (en) * 1997-03-05 2001-05-22 Paradyne Corporation Pilot tone system and method to allow continuous synchronization in multipoint networks
US5848357A (en) * 1997-03-31 1998-12-08 Motorola, Inc. Method and apparatus in a radio communication system for implementing a frequency reuse plan
IT1295863B1 (it) * 1997-10-22 1999-05-28 Telital Spa Metodo e apparato di trasmissione e ricezione di segnali digitali e stima dei canali di comunicazione
US5974100A (en) * 1997-11-26 1999-10-26 Motorola, Inc. Method and apparatus in a communication receiver for compensating for channel amplitude and phase distortion
US6370397B1 (en) * 1998-05-01 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Search window delay tracking in code division multiple access communication systems
US6731622B1 (en) 1998-05-01 2004-05-04 Telefonaktiebolaget Lm Ericsson (Publ) Multipath propagation delay determining means using periodically inserted pilot symbols
US6381290B1 (en) * 1998-05-15 2002-04-30 Ericsson Inc. Mobile unit for pilot symbol assisted wireless system and method of improving performance thereof
JP3289676B2 (ja) * 1998-05-28 2002-06-10 日本電気株式会社 パイロット信号を含む受信信号の復調方法及びその装置
US6269131B1 (en) 1998-05-28 2001-07-31 Glenayre Electronics, Inc. Physical channel estimator
JP2000032069A (ja) 1998-07-08 2000-01-28 Nec Corp パケット構成方法及びパケット受信器
JP3029030B2 (ja) * 1998-08-05 2000-04-04 日本電気株式会社 パイロット信号を含む受信信号の復調方法およびその装置
US6658050B1 (en) * 1998-09-11 2003-12-02 Ericsson Inc. Channel estimates in a CDMA system using power control bits
US6411649B1 (en) 1998-10-20 2002-06-25 Ericsson Inc. Adaptive channel tracking using pilot sequences
GB2346520A (en) * 1998-11-09 2000-08-09 Wi Lan Inc Data recovery in an OFDM system exploiting pilot subcarriers
US6519300B1 (en) * 1998-11-12 2003-02-11 Ericsson Inc. System and method for automatic frequency correction in a pilot symbol assisted demodulator
US6608868B1 (en) * 1999-01-19 2003-08-19 Matsushita Electric Industrial Co., Ltd. Apparatus and method for digital wireless communications
US6542562B1 (en) * 1999-02-09 2003-04-01 Telefonaktiebolaget Lm Ericsson (Publ) Approximated MMSE-based channel estimator in a mobile communication system
EP1041734A1 (de) * 1999-03-31 2000-10-04 Alcatel Funkübertragungsverfahren in einem drahtlosen Übertragungssytem mit Pilot- und Datenkanal Schätzung
KR100334787B1 (ko) * 1999-05-25 2002-05-03 윤종용 부호분할다중접속 통신시스템의 심볼 데이터 결합장치 및방법
US6725016B1 (en) * 2000-10-02 2004-04-20 Koninklijke Philips Electronics N.V. Method and apparatus for managing multipath signals for a receiver with multiple demodulators
KR100318952B1 (ko) * 1999-12-29 2002-01-04 윤종용 무선통신시스템에서 채널 추정을 위한 장치 및 방법
US6700538B1 (en) * 2000-03-29 2004-03-02 Time Domain Corporation System and method for estimating separation distance between impulse radios using impulse signal amplitude
JP2001339328A (ja) 2000-05-25 2001-12-07 Communication Research Laboratory 受信装置、受信方法、ならびに、情報記録媒体
US6700929B1 (en) 2000-07-31 2004-03-02 Rf Micro Devices, Inc. Method and apparatus for multipath parameter estimation in spread-spectrum communications systems
US6728324B1 (en) 2000-07-31 2004-04-27 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
US6647077B1 (en) 2000-07-31 2003-11-11 Rf Micro Devices, Inc. Multipath parameter estimation in spread-spectrum communications systems
KR100558113B1 (ko) * 2000-11-21 2006-03-10 한국전자통신연구원 페이딩 적응형 공간-시간 배열 수신 시스템 및 그 방법
DE10050341C1 (de) * 2000-10-11 2002-06-27 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Schätzen eines Kanals zwischen einem Sender und einem Empfänger und Empfänger
US20020168003A1 (en) * 2000-11-13 2002-11-14 Richards James L. System and method of communicating high rate pulse signals in a multipath environment
US6804223B2 (en) * 2000-11-30 2004-10-12 Ipr Licensing, Inc. Reverse link pilot integrated with block codes
US6980600B1 (en) * 2000-12-26 2005-12-27 Nortel Networks Limited Receiver system for Multiple-Transmit, Multiple-Receive (MTMR) wireless communications systems
JP3565344B2 (ja) * 2002-02-21 2004-09-15 株式会社エヌ・ティ・ティ・ドコモ 干渉除去システム、及び、干渉除去方法
GB2386038A (en) * 2002-02-27 2003-09-03 Motorola Inc Channel estimation in a radio receiver
US7054396B2 (en) * 2002-08-20 2006-05-30 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
US20040062217A1 (en) * 2002-09-30 2004-04-01 Farrokh Abrishamkar Method and apparatus for pilot estimation using an adaptive prediction error method with a kalman filter and a gauss-newton algorithm
US7042928B2 (en) * 2002-10-23 2006-05-09 Qualcomm Incorporated Method and apparatus for pilot estimation using prediction error method
US7385617B2 (en) * 2003-05-07 2008-06-10 Illinois Institute Of Technology Methods for multi-user broadband wireless channel estimation
US7356074B2 (en) * 2003-05-08 2008-04-08 Rf Micro Devices, Inc. Estimation of multipath channel with sub-chip resolution
US6985535B2 (en) 2003-10-31 2006-01-10 Motorola, Inc. Channel condition estimation for pilot coefficient selection
US7620368B2 (en) * 2004-03-19 2009-11-17 Qualcomm, Incorporated Systems and techniques for testing a wireless communications device
US8654899B2 (en) * 2004-10-12 2014-02-18 The Governors Of The University Of Alberta Pilot symbol assisted modulation signal processing systems and methods
US7573933B2 (en) * 2005-01-04 2009-08-11 Mitsubishi Electric Research Laboratories, Inc. Adaptive delay adjustment for transmitted reference impulse radio systems
US20090147757A1 (en) * 2005-08-22 2009-06-11 Matsushita Electric Industrial Co., Ltd. Base station device and mobile station device
US8645793B2 (en) 2008-06-03 2014-02-04 Marvell International Ltd. Statistical tracking for flash memory
US8725929B1 (en) * 2006-11-06 2014-05-13 Marvell World Trade Ltd. Adaptive read and write systems and methods for memory cells
US7941590B2 (en) * 2006-11-06 2011-05-10 Marvell World Trade Ltd. Adaptive read and write systems and methods for memory cells
US7756214B2 (en) * 2007-01-08 2010-07-13 Motorola, Inc. System and method for inserting pilot symbols in continuous phase modulation systems
US7738591B2 (en) * 2007-01-08 2010-06-15 Motorola, Inc. System and method for setting phase reference points in continuous phase modulation systems by providing pilot symbols at a location other than the location of the phase reference point
US8031526B1 (en) 2007-08-23 2011-10-04 Marvell International Ltd. Write pre-compensation for nonvolatile memory
US8189381B1 (en) 2007-08-28 2012-05-29 Marvell International Ltd. System and method for reading flash memory cells
US8085605B2 (en) 2007-08-29 2011-12-27 Marvell World Trade Ltd. Sequence detection for flash memory with inter-cell interference
JP4455630B2 (ja) * 2007-08-29 2010-04-21 株式会社東芝 送信機および受信機
US8699529B2 (en) * 2008-03-28 2014-04-15 Qualcomm Incorporated Broadband pilot channel estimation using a reduced order FFT and a hardware interpolator
JP2010034873A (ja) * 2008-07-29 2010-02-12 Sony Corp 送信装置、信号処理方法、および通信システム
US8711751B2 (en) * 2009-09-25 2014-04-29 Apple Inc. Methods and apparatus for dynamic identification (ID) assignment in wireless networks
US8483392B2 (en) 2009-09-25 2013-07-09 Apple Inc. Methods and apparatus for compensation for corrupted user identification data in wireless networks
CN102612063A (zh) * 2011-01-20 2012-07-25 华为技术有限公司 无线信道环境信息获取方法、装置和无线网络控制设备
US9054760B2 (en) * 2011-09-25 2015-06-09 Interdigital Patent Holdings, Inc. Wireless data transmission including assist signals
US9383436B2 (en) 2012-01-18 2016-07-05 Tdc Acquisition Holdings, Inc. One way time of flight distance measurement

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858529A (en) * 1957-05-07 1958-10-28 Gen Dynamics Corp Pilot alarm circuit for use in carrier transmission systems
US3717814A (en) * 1971-09-23 1973-02-20 Bell Telephone Labor Inc Cophasing diversity communication system with pilot feedback
JPS5332608A (en) * 1976-09-07 1978-03-28 Nec Corp Compensation system for angular frequency variation
US4675880A (en) * 1985-05-02 1987-06-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Antimultipath communication by injecting tone into null in signal spectrum
GB2215567B (en) * 1988-03-05 1992-11-18 Plessey Co Plc Improvements in or relating to equalisers
US5127051A (en) * 1988-06-13 1992-06-30 Itt Corporation Adaptive modem for varying communication channel
US5018166A (en) * 1989-10-10 1991-05-21 Hayes Microcomputer Products, Inc. Method and apparatus for baud timing recovery
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
SE465597B (sv) * 1990-02-16 1991-09-30 Ericsson Telefon Ab L M Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner
US5140615A (en) * 1990-06-12 1992-08-18 Motorola, Inc. Maximal ratio diversity combining technique
GB2247812B (en) * 1990-09-06 1994-08-31 Motorola Inc Equalizer for linear modulated signal
JP2668455B2 (ja) * 1990-12-20 1997-10-27 富士通株式会社 ビタビ復調制御方式
US5170413A (en) * 1990-12-24 1992-12-08 Motorola, Inc. Control strategy for reuse system assignments and handoff
CA2067669C (en) * 1991-04-30 1997-10-28 Akihisa Ushirokawa Method and apparatus of estimating data sequence transmitted using viterbi algorithm
JP2748743B2 (ja) * 1991-10-01 1998-05-13 日本電気株式会社 データ受信方式
US5263053A (en) * 1992-03-24 1993-11-16 Novatel Communications Ltd. Fractionally spaced maximum likelihood sequence estimation receiver

Also Published As

Publication number Publication date
FI965244A (fi) 1997-02-26
DE69329893T2 (de) 2001-08-23
CA2193659A1 (en) 1996-01-11
WO1996001004A1 (en) 1996-01-11
CA2109737A1 (en) 1994-07-07
EP0775386A4 (de) 1997-10-22
AU7253694A (en) 1996-01-25
IN182075B (de) 1998-12-26
ATE198965T1 (de) 2001-02-15
US5414734A (en) 1995-05-09
EP0605955A3 (en) 1995-10-25
CN1093847A (zh) 1994-10-19
EP0775386A1 (de) 1997-05-28
EP0605955A2 (de) 1994-07-13
EP0605955B1 (de) 2001-01-24
FI965244A0 (fi) 1996-12-30

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Legal Events

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8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee