Global Patent Index - EP 1072099 A1

EP 1072099 A1 2001-01-31 - METHOD AND APPARATUS FOR TCM DECODING USING QPSK VITERBI DECODER

Title (en)

METHOD AND APPARATUS FOR TCM DECODING USING QPSK VITERBI DECODER

Title (de)

VERFAHREN UND VORRICHTUNG ZUR TCM DECODIERUNG UNTER VERWENDUNG VON EINEM QPSK VITERBI DECODIERER

Title (fr)

PROCEDE ET APPAREIL DESTINES AU DECODAGE DE MODULATION CODEE EN TREILLIS AU MOYEN D'UN DECODEUR DE VITERBI A DPQ

Publication

EP 1072099 A1 (EN)

Application

EP 99918600 A

Priority

  • US 9908346 W
  • US 8219998 P

Abstract (en)

[origin: WO9955010A1] A method and apparatus for decoding a high order trellis-coded modulated (TCM) signal avoids the need to modify a standard QPSK Viterbi decoder by including a pre-processing unit that transforms a received signal to an equivalent signal vector of soft value in the QPSK signal constellation.

IPC 1-7 (main, further and additional classification)

H03M 13/00; H04L 27/18

IPC 8 full level (invention and additional information)

H03M 13/00 (2006.01); H04L 27/18 (2006.01)

CPC (invention and additional information)

H03M 13/00 (2013.01); H04L 27/18 (2013.01)

Citation (search report)

See references of WO 9955010A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9955010 A1 19991028; AU 3647499 A 19991108; EP 1072099 A1 20010131

INPADOC legal status


2002-02-20 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010809

2001-05-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010329

2001-04-18 [RIN1] INVENTOR (CORRECTION)

- Inventor name: NEE, CHI-PING

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001018

2001-01-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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