A low complexity soft-output decoder for a broad class of trellis coded modulation schemes

Author

Eck, Peter ; Matzner, Rolf

Author_Institution

Inst. for Commun. Eng., Fed. Armed Forces Univ. Munich, Neubiberg, Germany

fYear

1997

fDate

29 Jun-4 Jul 1997

Firstpage

501

Abstract

This work introduces a general concept to extend the principles of soft output Viterbi decoding to M-ary transmission. The proposed algorithm matches ideally the family of punctured pragmatic TCM (P²-TCM) schemes. Due to the puncturing technique employed, such a decoder can be realized by a basically traditional SOVA with a slightly modified metric and time-variant labeling, operating at a multiple clock speed

Keywords

Gaussian channels; Viterbi decoding; channel coding; computational complexity; concatenated codes; source coding; trellis coded modulation; AWGN channel; M-ary transmission; SOVA; channel coding; concatenated coding; low complexity soft-output decoder; modified metric; multiple clock speed; punctured pragmatic TCM; soft output Viterbi decoding; source coding; time-variant labeling; trellis coded modulation schemes; Channel coding; Clocks; Concatenated codes; Convolutional codes; Data communication; Decoding; Labeling; Modulation coding; Videoconference; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on

Conference_Location

Ulm

Print_ISBN

0-7803-3956-8

Type

conf

DOI

10.1109/ISIT.1997.613438

Filename

613438