Title :
Maximum-likelihood detection of block coded CDMA using the A* algorithm
Author :
Németh, Peter S A ; Rasmussen, Lars K. ; Aulin, Tor M.
Author_Institution :
Dept. of Comput. Eng., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Maximum-likelihood soft-decision decoding of block coded CDMA using the A* algorithm is considered. Different heuristic functions are considered, applied to coded and uncoded CDMA. The average complexity involved in ML detection for both uncoded and coded CDMA is investigated. The (23,12) Golay code is used in the coded case
Keywords :
Golay codes; code division multiple access; computational complexity; maximum likelihood decoding; maximum likelihood detection; A* algorithm; Golay code; ML detection; average complexity; block coded CDMA; heuristic functions; maximum-likelihood detection; maximum-likelihood soft-decision decoding; uncoded CDMA; AWGN; Additive white noise; Binary phase shift keying; Block codes; Costs; Decorrelation; Gaussian noise; Maximum likelihood detection; Multiaccess communication; Viterbi algorithm;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.935951
