DE69735549D1 - Kohärente demodulation mit entscheidungsgesteurter kanal schätzung für digitale übertragung - Google Patents

Kohärente demodulation mit entscheidungsgesteurter kanal schätzung für digitale übertragung

Info

Publication number
DE69735549D1
DE69735549D1 DE69735549T DE69735549T DE69735549D1 DE 69735549 D1 DE69735549 D1 DE 69735549D1 DE 69735549 T DE69735549 T DE 69735549T DE 69735549 T DE69735549 T DE 69735549T DE 69735549 D1 DE69735549 D1 DE 69735549D1
Authority
DE
Germany
Prior art keywords
decision
channel estimation
digital transmission
coherent demodulation
assessed 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
DE69735549T
Other languages
English (en)
Other versions
DE69735549T2 (de
Inventor
Peter Schramm
Johannes Huber
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of DE69735549D1 publication Critical patent/DE69735549D1/de
Publication of DE69735549T2 publication Critical patent/DE69735549T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
DE69735549T 1996-09-13 1997-09-05 Kohärente demodulation mit entscheidungsgesteurter kanal schätzung für digitale übertragung Expired - Lifetime DE69735549T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US713547 1996-09-13
US08/713,547 US5768307A (en) 1996-09-13 1996-09-13 Coherent demodulation with decision-directed channel estimation for digital communication
PCT/SE1997/001494 WO1998011676A2 (en) 1996-09-13 1997-09-05 Coherent demodulation with decision-directed channel estimation for digital communication

Publications (2)

Publication Number Publication Date
DE69735549D1 true DE69735549D1 (de) 2006-05-11
DE69735549T2 DE69735549T2 (de) 2006-11-23

Family

ID=24866568

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69735549T Expired - Lifetime DE69735549T2 (de) 1996-09-13 1997-09-05 Kohärente demodulation mit entscheidungsgesteurter kanal schätzung für digitale übertragung

Country Status (9)

Country Link
US (1) US5768307A (de)
EP (1) EP0925652B1 (de)
JP (1) JP4037459B2 (de)
KR (1) KR20000036114A (de)
CN (1) CN1097358C (de)
AU (1) AU4405297A (de)
DE (1) DE69735549T2 (de)
TW (1) TW384581B (de)
WO (1) WO1998011676A2 (de)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6154484A (en) * 1995-09-06 2000-11-28 Solana Technology Development Corporation Method and apparatus for embedding auxiliary data in a primary data signal using frequency and time domain processing
FI100041B (fi) * 1995-12-29 1997-08-29 Nokia Telecommunications Oy Menetelmä signaalin ja kohinan laadun estimoimiseksi ja vastaanotin
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
US5889827A (en) * 1996-12-12 1999-03-30 Ericsson Inc. Method and apparatus for digital symbol detection using medium response estimates
FR2757330B1 (fr) * 1996-12-18 1999-01-15 Commissariat Energie Atomique Procede de transmission d'informations par reponse impulsionnelle et recepteur correspondant
US6616254B1 (en) 1997-06-20 2003-09-09 Itran Communications Ltd. Code shift keying transmitter for use in a spread spectrum communications system
US6064695A (en) * 1997-06-20 2000-05-16 Itran Communications Ltd. Spread spectrum communication system utilizing differential code shift keying
US6185199B1 (en) * 1997-07-23 2001-02-06 Qualcomm Inc. Method and apparatus for data transmission using time gated frequency division duplexing
US6078626A (en) * 1997-09-24 2000-06-20 Ericsson Inc. Methods and systems for communicating information using separable modulation constellations
US6295311B1 (en) * 1997-11-07 2001-09-25 Hughes Electronics Corporation Method and apparatus for compensating for phase differences in received signals
US6366607B1 (en) * 1998-05-14 2002-04-02 Interdigital Technology Corporation Processing for improved performance and reduced pilot
JP3626852B2 (ja) * 1998-05-29 2005-03-09 Ｋｄｄｉ株式会社 ダイバーシチ受信下での信号合成方法及び装置
US6526091B1 (en) 1998-08-17 2003-02-25 Telefonaktiebolaget Lm Ericsson Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties
US6487255B1 (en) * 1998-08-31 2002-11-26 Ericsson Inc. Information generation for coherent demodulation of differentially encoded signals
BR9916512A (pt) 1998-12-24 2001-09-04 Ericsson Telefon Ab L M Aparelho em um receptor em um sistema de comunicação, processo de processamento de sinais recebidos na estação base em um sistema de rádio, telefone celular, e, sistema de comunicação
CA2333954A1 (en) * 1999-04-02 2000-10-12 Ntt Docomo, Inc. Channel estimation device and method, demodulation device and method, and fading frequency decision device and method
US6452917B1 (en) * 1999-04-08 2002-09-17 Qualcomm Incorporated Channel estimation in a CDMA wireless communication system
DE19922184A1 (de) * 1999-05-12 2000-11-23 Siemens Ag Verfahren zur Schätzung von Kanalparametern
US6463048B1 (en) * 1999-07-21 2002-10-08 Lucent Technologies Inc. Code generator for multiple rake finger and method of use
US6614864B1 (en) 1999-10-12 2003-09-02 Itran Communications Ltd. Apparatus for and method of adaptive synchronization in a spread spectrum communications receiver
US6873667B2 (en) * 2000-01-05 2005-03-29 Texas Instruments Incorporated Spread spectrum time tracking
JP3522631B2 (ja) * 2000-03-09 2004-04-26 松下電器産業株式会社 プリアンブル受信装置及びプリアンブル受信方法
US6430214B1 (en) * 2000-05-22 2002-08-06 Motorola, Inc. Fading resistant multi-level QAM receiver
US6683908B1 (en) * 2000-06-29 2004-01-27 Samsung Electronics Co., Ltd. RF receiver having improved signal-to-noise ratio and method of operation
FR2814877B1 (fr) * 2000-10-02 2003-01-03 Mitsubishi Electric Inf Tech Sequence d'estimation de canal et procede d'estimation d'un canal de transmission qui utilise une telle sequence d'estimation de canal
US7065146B1 (en) 2002-02-15 2006-06-20 Marvell International Ltd. Method and apparatus for equalization and decoding in a wireless communications system including plural receiver antennae
US7697594B2 (en) * 2001-03-30 2010-04-13 Texas Instruments Incorporated Method and apparatus for regenerative based interference cancellation within a communication system
US20020146044A1 (en) * 2001-04-09 2002-10-10 Riaz Esmailzadeh Hybrid single/multiuser interference reduction detector
EP1282258A1 (de) * 2001-08-02 2003-02-05 Mitsubishi Electric Information Technology Centre Europe B.V. Verfahren und Vorrichtung zur Synchronisation von Empfängern
JP3814502B2 (ja) * 2001-08-09 2006-08-30 松下電器産業株式会社 干渉除去装置及び干渉除去方法
US7218684B2 (en) * 2001-11-02 2007-05-15 Interdigital Technology Corporation Method and system for code reuse and capacity enhancement using null steering
US7010017B2 (en) * 2002-01-30 2006-03-07 Qualcomm Inc. Receiver noise estimation
US7567634B1 (en) 2002-02-15 2009-07-28 Marvell International Ltd. Reduced complexity viterbi decoding method and apparatus
US7012978B2 (en) * 2002-03-26 2006-03-14 Intel Corporation Robust multiple chain receiver
US7286506B2 (en) * 2002-06-05 2007-10-23 Qualcomm Incorporated Method and apparatus for pilot estimation using a prediction error method with a kalman filter and a Gauss-Newton algorithm
CN100435499C (zh) * 2002-06-10 2008-11-19 北京邮电大学 一种用于宽带码分多址系统的信道估计方法
CA2503694A1 (en) * 2002-11-22 2004-06-10 Interdigital Technology Corporation Channel gain estimation in a rake receiver
US7068708B2 (en) * 2002-12-13 2006-06-27 Motorola, Inc. Method and receiving unit for demodulating a multi-path signal
US20060094365A1 (en) * 2002-12-24 2006-05-04 Matsushita Electric Industrial Co. Ltd Channel simulator and wireless apparatus evaluation method
EP1447927A1 (de) * 2003-02-17 2004-08-18 France Telecom Vorrichtung und Verfahren zur Signalverarbeitung
US7239674B2 (en) * 2003-06-04 2007-07-03 Honeywell Federal Manufacturing & Technologies, Llc Method of differential-phase/absolute-amplitude QAM
US7724719B2 (en) * 2003-06-18 2010-05-25 Telefonaktiebolaget L M Ericsson (Publ) Multistage despreading of spread spectrum communications signals
US7630457B2 (en) * 2003-12-18 2009-12-08 Freescale Semiconductor, Inc. Method and apparatus for demodulating a received signal within a coded system
CN1780272B (zh) * 2004-11-19 2011-01-05 上海宣普实业有限公司 路径合并和相关的方法
US7489733B2 (en) * 2005-04-18 2009-02-10 Motorola, Inc. Channel estimation using a minimized channel prediction interval
US7352795B2 (en) * 2005-05-04 2008-04-01 Harris Corporation System and method for communicating data using constant amplitude waveform with hybrid orthogonal and MSK or GMSK modulation
US7817924B2 (en) * 2006-03-24 2010-10-19 The Mitre Corporation Rate adjustable differential phase shift key (DPSK) modulation
CN101232304B (zh) * 2008-02-29 2012-05-30 北京邮电大学 一种通信系统中发送和接收信道信息的方法和设备
US8576736B1 (en) 2010-11-10 2013-11-05 Sprint Spectrum L.P. Method and system for spread spectrum signal acquisition without a pilot signal
CN102752017B (zh) * 2012-06-27 2014-10-08 华为技术有限公司 信号接收方法和装置
CN103490860B (zh) * 2013-10-11 2016-08-24 中国人民解放军理工大学 一种高性能的短波正交扩频迭代解调与译码方法
CN105553915B (zh) * 2015-12-10 2020-07-03 中国人民解放军32181部队 间歇辐射信号瞬态调制参量解调方法
US10911289B1 (en) * 2019-07-31 2021-02-02 Silicon Laboratories Inc. Interface to provide selectable time domain or frequency domain information to downstream circuitry
US11308349B1 (en) * 2021-10-15 2022-04-19 King Abdulaziz University Method to modify adaptive filter weights in a decentralized wireless sensor network

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031193A (en) * 1989-11-13 1991-07-09 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals
DE4039245A1 (de) * 1990-12-08 1992-06-11 Philips Patentverwaltung Empfaenger mit mindestens zwei empfangszweigen
US5151919A (en) * 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5357454A (en) * 1991-07-25 1994-10-18 Ericsson Ge Mobile Communications Holding, Inc. Fast walsh transform processor
US5237586A (en) * 1992-03-25 1993-08-17 Ericsson-Ge Mobile Communications Holding, Inc. Rake receiver with selective ray combining
US5353352A (en) * 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
US5550809A (en) * 1992-04-10 1996-08-27 Ericsson Ge Mobile Communications, Inc. Multiple access coding using bent sequences for mobile radio communications
US5305349A (en) * 1993-04-29 1994-04-19 Ericsson Ge Mobile Communications Inc. Quantized coherent rake receiver
US5442661A (en) * 1993-08-13 1995-08-15 Motorola Inc. Path gain estimation in a receiver
GB2281482B (en) * 1993-08-26 1997-10-22 Roke Manor Research Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
US5506861A (en) * 1993-11-22 1996-04-09 Ericsson Ge Mobile Comminications Inc. System and method for joint demodulation of CDMA signals
US5572552A (en) * 1994-01-27 1996-11-05 Ericsson Ge Mobile Communications Inc. Method and system for demodulation of downlink CDMA signals
US5544156A (en) * 1994-04-29 1996-08-06 Telefonaktiebolaget Lm Ericsson Direct sequence CDMA coherent uplink detector
US5499272A (en) * 1994-05-31 1996-03-12 Ericsson Ge Mobile Communications Inc. Diversity receiver for signals with multipath time dispersion

Also Published As

Publication number Publication date
JP2001503211A (ja) 2001-03-06
AU4405297A (en) 1998-04-02
DE69735549T2 (de) 2006-11-23
KR20000036114A (ko) 2000-06-26
TW384581B (en) 2000-03-11
US5768307A (en) 1998-06-16
WO1998011676A3 (en) 1998-05-14
CN1097358C (zh) 2002-12-25
JP4037459B2 (ja) 2008-01-23
EP0925652A2 (de) 1999-06-30
WO1998011676A2 (en) 1998-03-19
CN1236509A (zh) 1999-11-24
EP0925652B1 (de) 2006-03-22

Similar Documents

Publication Publication Date Title
DE69735549D1 (de) Kohärente demodulation mit entscheidungsgesteurter kanal schätzung für digitale übertragung
DE69734561D1 (de) Entzerrer mit erweiterter kanalschätzung für einen empfänger in einem digitalen übertragungssystem
DE59010213D1 (de) Kanalschätzer enthaltender Empfänger für digitales Übertragungssystem
DE19580558D2 (de) Synchronisiereinrichtung für Schaltgetriebe
DE69628550D1 (de) Funkgerätsystem für digitale übertragung
DE69839375D1 (de) Digitaler Demodulator für hierarchische Übertragung
DE69529016T2 (de) Signalisierungsprotokoll für störbehaftete Übertragungskanäle
DE69739340D1 (de) Symbolsynchronisierung für Mehrträgersignalen mit Schutzintervall
DE69123948D1 (de) Kodierung für digitale Übertragung
DE69928671D1 (de) Schliessvorrichtung für ein aneurysma mit variabler flexibilität
DE69732391D1 (de) Interferenzkompensator für CDMA-Nachrichtenübertragung
DE69941957D1 (de) Digitale modulation mit veränderlichen symbolraten
DE69726270D1 (de) Feststellvorrichtung für automatische getriebe
DE69937484D1 (de) Digitales übertragungsempfangssystem
DE69929013D1 (de) Phasenschätzung bei Trägerrückgewinnung für QAM-Signale
DE69118640D1 (de) Zeitmultiplex-Informationsübertragungssystem mit variablen Strukturen
DE69708983T2 (de) Getriebemotor mit Träger für Lamellenkontakte
DE69931806D1 (de) Dmt dsl übertragungssystem für mehrere standards
DE59609582D1 (de) Stopfeinrichtung für synchrones digitales Übertragungssystem
GB9813390D0 (en) Telecommunication system with channel sharing
DE58908119D1 (de) Schaltanordnung für ein Automatikgetriebe.
DE59700732D1 (de) Getriebeschmierung
DE69935497D1 (de) Empfänger für digitale terrestrische fernsehübertragung
DE69713998T2 (de) Schaltsteuerverfahren für Automatikgetriebe
NO971266D0 (no) Dataoverföring i telekanalen i DECT-anlegg

Legal Events

Date Code Title Description
8364 No opposition during term of opposition