CA2264789A1 - Preambule a l'evaluation de la reponse impulsionnelle d'un canal dans un systeme a diversite d'antenne - Google Patents

Preambule a l'evaluation de la reponse impulsionnelle d'un canal dans un systeme a diversite d'antenne Download PDF

Info

Publication number
CA2264789A1
CA2264789A1 CA002264789A CA2264789A CA2264789A1 CA 2264789 A1 CA2264789 A1 CA 2264789A1 CA 002264789 A CA002264789 A CA 002264789A CA 2264789 A CA2264789 A CA 2264789A CA 2264789 A1 CA2264789 A1 CA 2264789A1
Authority
CA
Canada
Prior art keywords
preamble
sequences
antenna
pulse response
channel pulse
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.)
Abandoned
Application number
CA002264789A
Other languages
English (en)
Inventor
Weilin Liu
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.)
Ascom Systec AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2264789A1 publication Critical patent/CA2264789A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
    • H04B7/0811—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception during preamble or gap period
    • 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
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • 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
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/042—Detectors therefor, e.g. correlators, state machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Dans un système numérique de transmission de signaux, un préambule est caractérisé par plusieurs séquences binaires différentes (m1-m5), qui conviennent aussi bien pour la synchronisation des paquets que pour l'évaluation des canaux. Avantageusement, le système utilise m séquences d'une longueur de 31 bits par exemple, répétées trois fois. Ceci permet de sélectionner une antenne au niveau d'un récepteur, ainsi que, sur la base de deux séquences (S4, S5) sélectionnées dans un intervalle fixe, de transmettre le décalage de fréquence.
CA002264789A 1996-09-04 1996-09-04 Preambule a l'evaluation de la reponse impulsionnelle d'un canal dans un systeme a diversite d'antenne Abandoned CA2264789A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1996/000302 WO1998010531A1 (fr) 1996-09-04 1996-09-04 Preambule a l'evaluation de la reponse impulsionnelle d'un canal dans un systeme a diversite d'antenne

Publications (1)

Publication Number Publication Date
CA2264789A1 true CA2264789A1 (fr) 1998-03-12

Family

ID=4550448

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002264789A Abandoned CA2264789A1 (fr) 1996-09-04 1996-09-04 Preambule a l'evaluation de la reponse impulsionnelle d'un canal dans un systeme a diversite d'antenne

Country Status (5)

Country Link
EP (1) EP0931389A1 (fr)
JP (1) JP2001504648A (fr)
AU (1) AU726748B2 (fr)
CA (1) CA2264789A1 (fr)
WO (1) WO1998010531A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4047893A1 (fr) * 2021-02-23 2022-08-24 Nokia Solutions and Networks Oy Égaliseur et unité de formation d'égaliseur de compensation de distorsion dépendant de données

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347831B (en) * 1999-03-06 2004-07-07 Nec Technologies Sychronisation in digital data transmission systems
ATE301900T1 (de) * 1999-06-04 2005-08-15 Broadcom Corp Verfahren und vorrichtung zur bestimmung der kanal- und baudfrequenzoffsetschätzung mittels einer präambel mit einer wiederholenden sequenz
US6952454B1 (en) 2000-03-22 2005-10-04 Qualcomm, Incorporated Multiplexing of real time services and non-real time services for OFDM systems
US6473467B1 (en) * 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6661857B1 (en) * 2000-07-10 2003-12-09 Intersil Americas Inc. Rapid estimation of wireless channel impulse response
GB2398964B (en) * 2003-02-27 2005-08-17 Toshiba Res Europ Ltd Signal processing apparatus and methods
US20060190793A1 (en) * 2005-02-18 2006-08-24 Marlin Viss Establishing a reference bit in a bit pattern
EP1892852B1 (fr) 2006-08-21 2010-05-19 Sony Deutschland Gmbh Appareil et procédé pour sélection d'antenne dans un système sans fil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396101B1 (fr) * 1989-05-02 1996-01-03 Nec Corporation Récepteur ARMT à diversité d'espace
DE4138798C2 (de) * 1991-11-26 1999-09-09 Daimler Chrysler Ag Verfahren zur Schätzung der Kanalstoßantwort eines Übertragungskanals
DE4201810A1 (de) * 1992-01-24 1993-07-29 Aeg Mobile Communication Digitales nachrichtenuebertragungssystem
GB2272609B (en) * 1992-11-12 1996-10-09 Northern Telecom Ltd Telecommunications systems
DE69432683T2 (de) * 1993-09-30 2004-03-11 Conexant Systems, Inc., Newport Beach Basisstation für ein digitales schnurloses Telefon mit Mehrfachantennenanordnung
SE9402493L (sv) * 1994-07-15 1996-01-16 Ericsson Telefon Ab L M Metod i en diversitetsmottagare

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4047893A1 (fr) * 2021-02-23 2022-08-24 Nokia Solutions and Networks Oy Égaliseur et unité de formation d'égaliseur de compensation de distorsion dépendant de données
US11817975B2 (en) 2021-02-23 2023-11-14 Nokia Solutions And Networks Oy Equalizer and an equalizer training unit for data-dependent distortion compensation

Also Published As

Publication number Publication date
JP2001504648A (ja) 2001-04-03
AU6730596A (en) 1998-03-26
WO1998010531A1 (fr) 1998-03-12
EP0931389A1 (fr) 1999-07-28
AU726748B2 (en) 2000-11-16

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Legal Events

Date Code Title Description
FZDE Discontinued