EP1340335A2 - Agencements et procedes pour le turbo codage en treillis spatio-temporel - Google Patents

Agencements et procedes pour le turbo codage en treillis spatio-temporel

Info

Publication number
EP1340335A2
EP1340335A2 EP01997920A EP01997920A EP1340335A2 EP 1340335 A2 EP1340335 A2 EP 1340335A2 EP 01997920 A EP01997920 A EP 01997920A EP 01997920 A EP01997920 A EP 01997920A EP 1340335 A2 EP1340335 A2 EP 1340335A2
Authority
EP
European Patent Office
Prior art keywords
coder
symbols
sttcm
supplied
odd
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.)
Withdrawn
Application number
EP01997920A
Other languages
German (de)
English (en)
Inventor
Branka Vucetic
Welly Firmanto
Jinhong Yuan
Zhuo Chen
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.)
Nortel Networks Ltd
Original Assignee
Nortel Networks Ltd
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 Nortel Networks Ltd filed Critical Nortel Networks Ltd
Publication of EP1340335A2 publication Critical patent/EP1340335A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0066—Parallel concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Definitions

  • Fig. 1 illustrates parts of a known space-time block code (STBC) transmitter
  • Fig. 5 illustrates a decoding arrangement for use with the coding arrangement of Fig. 3.
  • the symbols produced by the second coder- 32 are de-interleaved by the de- interleaver 36, which operates conversely to the interieaver 34, to produce symbols in each symbol interval which are identified as x2 ⁇ and x2 2 as shown in Fig. 3. It is assumed here for convenience and simplicity that the coders 30 and 32 are identical, but as for known turbo coders this need not necessarily be the case and the coders 30 and 32 could instead differ from one another.
  • the selector 38 is controlled by a control signal of alternating ones and zeros (1010... as illustrated) at the bit group rate, and performs selection and puncturing functions as represented in Fig. 3 by switches within the selector 38.
  • Table 5 represents, for the feedforward code and the derived recursive feedback code, the next state of the coder and the two output symbols of an 8-state QPSK STTCM coder for a coding arrangement for two transmit antennas :

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

La présente invention concerne un premier et un deuxième codeur à modulation par codage en treillis spatio-temporel (STTCM) récursifs produisant chacun, dans des intervalles de symboles successifs, une pluralité de symboles T à déplacement de phase à base M à partir d'un groupe de b bits d'entrée, où M = 2b. Les groupes de b bits sont fournis directement au premier codeur et par l'intermédiaire d'un entrelaceur au deuxième codeur, dont les symboles de sortie sont réciproquement désentrelacés. Un sélecteur fournit en alternance des symboles T du premier codeur et des symboles T du désentrelaceur dans des intervalles de symboles successifs, à des chemins de sortie T pour des antennes T fournissant une diversité de transmission. Des codes STTCM pour différentes valeurs de T et M et pour des voies sujettes à un évanouissement lent et rapide sont décrits.
EP01997920A 2000-11-22 2001-11-20 Agencements et procedes pour le turbo codage en treillis spatio-temporel Withdrawn EP1340335A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US71728600A 2000-11-22 2000-11-22
US717286 2000-11-22
PCT/GB2001/005130 WO2002043313A2 (fr) 2000-11-22 2001-11-20 Agencements et procedes pour le turbo codage en treillis spatio-temporel

Publications (1)

Publication Number Publication Date
EP1340335A2 true EP1340335A2 (fr) 2003-09-03

Family

ID=24881416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01997920A Withdrawn EP1340335A2 (fr) 2000-11-22 2001-11-20 Agencements et procedes pour le turbo codage en treillis spatio-temporel

Country Status (5)

Country Link
EP (1) EP1340335A2 (fr)
JP (1) JP2004515119A (fr)
AU (1) AU2002223850A1 (fr)
CA (1) CA2429658A1 (fr)
WO (1) WO2002043313A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6865237B1 (en) 2000-02-22 2005-03-08 Nokia Mobile Phones Limited Method and system for digital signal transmission
FI20011357A0 (fi) 2001-06-25 2001-06-25 Nokia Corp Lähetysmenetelmä
FI20002845A7 (fi) 2000-12-22 2002-06-23 Nokia Corp Digitaalisen signaalin lähettäminen
AU2003253760A1 (en) * 2002-06-26 2004-01-19 Zyray Wireless, Inc. Method and apparatus for space-time turbo-coded modulation
GB2392065B (en) * 2002-08-15 2004-12-29 Toshiba Res Europ Ltd Signal decoding methods and apparatus
DE60322049D1 (de) 2003-08-05 2008-08-21 St Microelectronics Srl Signalübertragungsverfahren unter Verwendung von Antenne-Diversität und entsprechende Einrichtung
US7209714B2 (en) * 2003-08-29 2007-04-24 Nokia Corporation Apparatus, and associated method, for communicating data at selected levels of diversity in a radio communication system
KR101050570B1 (ko) * 2003-12-03 2011-07-19 삼성전자주식회사 시공간 트렐리스 코드를 사용하는 이동 통신 시스템에서 성능 개선을 위한 데이터 송수신 장치 및 방법
KR100591904B1 (ko) 2004-03-18 2006-06-20 한국전자통신연구원 시공간 부호를 이용한 부호분할 다중접속 시스템의 전송다이버시티 송수신 장치, 및 그 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100374787B1 (ko) * 2000-01-18 2003-03-04 삼성전자주식회사 대역 효율적인 연쇄 티.씨.엠 디코더 및 그 방법들

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0243313A3 *

Also Published As

Publication number Publication date
AU2002223850A1 (en) 2002-06-03
WO2002043313A3 (fr) 2002-10-17
CA2429658A1 (fr) 2002-05-30
WO2002043313A2 (fr) 2002-05-30
JP2004515119A (ja) 2004-05-20

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