Title :
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
fDate :
29 Jun-4 Jul 1997
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;
Conference_Titel :
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on
Conference_Location :
Ulm
Print_ISBN :
0-7803-3956-8
DOI :
10.1109/ISIT.1997.613438
