WO1999052249A1 - Recepteur pour signaux de communication a large spectre - Google Patents

Recepteur pour signaux de communication a large spectre Download PDF

Info

Publication number
WO1999052249A1
WO1999052249A1 PCT/EP1999/001973 EP9901973W WO9952249A1 WO 1999052249 A1 WO1999052249 A1 WO 1999052249A1 EP 9901973 W EP9901973 W EP 9901973W WO 9952249 A1 WO9952249 A1 WO 9952249A1
Authority
WO
WIPO (PCT)
Prior art keywords
burst
signal
receiver
received
transmitted
Prior art date
Application number
PCT/EP1999/001973
Other languages
English (en)
Inventor
Nicholas William Anderson
Rorie O'neill
Reza Karimi
Original Assignee
Motorola Limited
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 Motorola Limited filed Critical Motorola Limited
Publication of WO1999052249A1 publication Critical patent/WO1999052249A1/fr

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
    • H04L25/03—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
    • 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

Definitions

  • each time-slot within the TDMA time frame is divided into a plurality of channels which are uniquely distinguished from each other by means of the CDMA process.
  • the use of such a system gives some advantages over a communications system using either TDMA or CDMA alone.
  • the joint detection equations can be solved using propagation channel estimates and knowledge of the spreading codes used.
  • the training sequences often referred to as midamble sequences, in a typical TD-CDMA mobile communications system are known. Also known are the relevant channel coefficients.

Abstract

L'invention porte sur un processeur (7, 8) de signaux d'un récepteur de télécommunications, et qui peut être appliqué notamment à des systèmes TD-CDMA. Ce processeur possède un organe d'élimination des interférences provenant d'un bloc (2) de données reçu et provoquées par les effets de voies multiples du medambule (3) du signal reçu. La séquence (3) medambule connue est convolutionnée par une évaluation du canal (5) de propagation et le résultat est soustrait (8) du signal (4) reçu. Le signal corrigé peut être ensuite introduit dans un processeur (6) traditionnel de détection d'épissure en vue d'un traitement ultérieur.
PCT/EP1999/001973 1998-04-07 1999-03-22 Recepteur pour signaux de communication a large spectre WO1999052249A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9807335.6 1998-04-07
GBGB9807335.6A GB9807335D0 (en) 1998-04-07 1998-04-07 A receiver for spread spectrum communications signals

Publications (1)

Publication Number Publication Date
WO1999052249A1 true WO1999052249A1 (fr) 1999-10-14

Family

ID=10829920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001973 WO1999052249A1 (fr) 1998-04-07 1999-03-22 Recepteur pour signaux de communication a large spectre

Country Status (2)

Country Link
GB (1) GB9807335D0 (fr)
WO (1) WO1999052249A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001058041A2 (fr) * 2000-02-04 2001-08-09 Interdigital Technology Corporation Gestion de la detection de plusieurs utilisateurs au niveau de la liaison descendante
EP1512218A2 (fr) * 2002-05-09 2005-03-09 Interdigital Technology Corporation Procede et appareil d'annulation de midamble parallele
DE10138962B4 (de) * 2001-08-08 2011-05-12 Rohde & Schwarz Gmbh & Co. Kg Verfahren zur Erkennung von aktiven Codesequenzen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011533A2 (fr) * 1994-10-07 1996-04-18 Nokia Telecommunications Oy Detection de signaux dans un systeme tdma
EP0767543A2 (fr) * 1995-10-06 1997-04-09 Siemens Aktiengesellschaft Communication à multiplexage par répartition de code avec suppression d'interférence
WO1998007243A2 (fr) * 1996-08-15 1998-02-19 Nokia Telecommunications Oy Procede de combinaison de diversite, et recepteur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011533A2 (fr) * 1994-10-07 1996-04-18 Nokia Telecommunications Oy Detection de signaux dans un systeme tdma
EP0767543A2 (fr) * 1995-10-06 1997-04-09 Siemens Aktiengesellschaft Communication à multiplexage par répartition de code avec suppression d'interférence
WO1998007243A2 (fr) * 1996-08-15 1998-02-19 Nokia Telecommunications Oy Procede de combinaison de diversite, et recepteur

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7710928B2 (en) 2000-02-04 2010-05-04 Interdigital Technology Corporation Channelization code determination by a user equipment
WO2001058041A2 (fr) * 2000-02-04 2001-08-09 Interdigital Technology Corporation Gestion de la detection de plusieurs utilisateurs au niveau de la liaison descendante
US6795417B2 (en) 2000-02-04 2004-09-21 Interdigital Technology Corporation User equipment with multiuser detection
US6934271B2 (en) 2000-02-04 2005-08-23 Interdigital Technology Corporation Support of multiuser detection in the downlink
US6885649B2 (en) 2000-02-04 2005-04-26 Interdigital Technology Corporation Method of multiuser detection with user equipment
WO2001058041A3 (fr) * 2000-02-04 2002-02-14 Interdigital Tech Corp Gestion de la detection de plusieurs utilisateurs au niveau de la liaison descendante
EP1523109A3 (fr) * 2000-02-04 2005-05-18 Interdigital Technology Corporation Gestion de la détection de plusieurs utilisateurs au niveau de la liaison descendante
EP1523109A2 (fr) * 2000-02-04 2005-04-13 Interdigital Technology Corporation Gestion de la détection de plusieurs utilisateurs au niveau de la liaison descendante
DE10138962B4 (de) * 2001-08-08 2011-05-12 Rohde & Schwarz Gmbh & Co. Kg Verfahren zur Erkennung von aktiven Codesequenzen
JP2006508560A (ja) * 2002-05-09 2006-03-09 インターディジタル テクノロジー コーポレイション 並列ミッドアンブル除去の方法および装置
CN100459412C (zh) * 2002-05-09 2009-02-04 美商内数位科技公司 并列训练序列消除的方法与装置
EP1512218A4 (fr) * 2002-05-09 2010-04-28 Interdigital Tech Corp Procede et appareil d'annulation de midamble parallele
US7428278B2 (en) 2002-05-09 2008-09-23 Interdigital Technology Corporation Method and apparatus for parallel midamble cancellation
US7751512B2 (en) 2002-05-09 2010-07-06 Interdigital Technology Corporation Method and apparatus for parallel midamble cancellation
US7773704B2 (en) 2002-05-09 2010-08-10 Interdigital Technology Corporation Method and apparatus for parallel midamble cancellation
EP1512218A2 (fr) * 2002-05-09 2005-03-09 Interdigital Technology Corporation Procede et appareil d'annulation de midamble parallele

Also Published As

Publication number Publication date
GB9807335D0 (en) 1998-06-03

Similar Documents

Publication Publication Date Title
JP4316500B2 (ja) 受信ダイバーシティを用いるブロック送信のためのグループ単位連続干渉キャンセル
US7035316B2 (en) Method and apparatus for adaptive linear equalization for Walsh covered modulation
US7463672B2 (en) Technique for adaptive multiuser equalization in code division multiple access systems
CA2188869C (fr) Detecteur coherent de liaison montante dans un systeme d'acces multiple par difference de code a sequence directe
EP0676874B1 (fr) Procédé et dispositif pour annulation séquentielle d'interférence à accès multiple dans un récepteur AMDC
CA2157661C (fr) Procede et systeme de demodulation de signaux amdc a liaison descendante
US7590169B2 (en) Multipath interference reduction on pilot estimation with legacy system interoperability
EP0998794B1 (fr) Systeme et procede de communication par codage a bloc orthogonal
JP2570967B2 (ja) Ｃｄｍａ受信機
KR100501617B1 (ko) 3ｇｐｐ 표준에 따라 부호화된 신호의 수신 방법 및 수신기
JP4669569B2 (ja) 無線局
CA2396571C (fr) Estimation de voie pour les systemes de communication duplex a repartition dans le temps
US5677930A (en) Method and apparatus for spread spectrum channel estimation
US5754599A (en) Method and apparatus for coherent channel estimation in a communication system
MXPA98000853A (en) Des-extendedor adapta
US7167529B2 (en) Method and device for radio signal reception
US6574269B1 (en) Asymmetric orthogonal codes for wireless system receivers with multiplication-free correlators
US20030072282A1 (en) Code division multiple access downlink receiver
Li et al. A new blind receiver for downlink DS-CDMA communications
EP0784888B1 (fr) Procede d'annulation des interferences et recepteur associe
US20010026578A1 (en) Code division multiple access transmitter and receiver
EP1035681B1 (fr) Procédé de suppression des interferences
WO1999052249A1 (fr) Recepteur pour signaux de communication a large spectre
CN101390318A (zh) 符号级适配方法，用于实现该方法的存储器、均衡器以及接收机
JP5085833B2 (ja) データ伝送方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase