Title :
Performance of Weighted Nonbinary Repeat-Accumulate Codes over GF(q) with q-ary Orthogonal Modulation
Author :
Kim, Yongsang ; Cheun, Kyungwhoon ; Lim, Hyuntack
fDate :
5/1/2011 12:00:00 AM
Abstract :
An approximate upper bound is derived to the maximum likelihood decoding threshold of weighted nonbinary repeat-accumulate (WNRA) codes over GF(q) with q-ary orthogonal modulation and coherent detection over the additive white Gaussian noise channel. As with binary RA codes, WNRA codes show the potential for achieving the channel capacity with decreasing code rate for large enough q.
Keywords :
AWGN channels; binary codes; channel capacity; maximum likelihood decoding; modulation; orthogonal codes; signal detection; WNRA code; additive white Gaussian noise channel; approximate upper bound; binary RA code; channel capacity; code rate; coherent detection; maximum likelihood decoding threshold; q-ary orthogonal modulation; weighted nonbinary repeat-accumulate code; AWGN channels; Approximation methods; Channel capacity; Coherence; Decoding; Modulation; Upper bound; Channel capacity; orthogonal modulation; repeat-accumulate codes;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2011.022811.090194
