Title :
Coded modulation with feedback decoding trellis codes
Author :
Hellstern, Günter
Author_Institution :
Inst. fuer Nachrichtensyst., Karlsruhe Univ., Germany
Abstract :
It has previously been shown that with trellis-coded modulation it is possible to achieve a significant coding gain of 3 to 6 dB over uncoded modulation without bandwidth expansion. However, the decoding effort grows rapidly with the coding gain. A different approach is given by the author. Based on a feedback decoding scheme, trellis codes of large constraint length are proposed which can be easily decoded. At similar decoder complexity, but at a larger decoding delay, they attain additional coding gain over conventional trellis codes
Keywords :
computational complexity; decoding; delays; feedback; trellis coded modulation; coding gain; decoder complexity; decoding delay; feedback decoding trellis codes; large constraint length; AWGN; Bandwidth; Convolutional codes; Decoding; Feedback; Modulation coding; Partitioning algorithms; Quadrature amplitude modulation; Samarium; Viterbi algorithm;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397442
