Title :
A table-based reduced complexity sequential decoding algorithm
Author :
Koorapaty, Havish ; Bitzer, Donald L. ; Dholakia, Ajay ; Vouk, Mladen A.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
Abstract :
The table-based soft-decision convolutional decoding method presented here performs a reduced tree search as compared to the M-algorithm. The degree of tree-searching is adapted to the state of the channel by using a syndrome sequence and pre-computed information stored in a memory table. This results in a significant reduction in computational complexity while maintaining bit error rate performance comparable to the M-algorithm on a Rayleigh flat-fading channel
Keywords :
Rayleigh channels; channel capacity; computational complexity; convolutional codes; error statistics; sequential decoding; tree searching; M-algorithm; Rayleigh flat-fading channel; computational complexity; convolutional decoding method; information bit error rate performance; memory table; reduced complexity algorithm; sequential decoding algorithm; syndrome sequence; table-based soft-decision decoding; tree-searching; Bit error rate; Computational complexity; Computer science; Convolutional codes; Decoding; Detectors; Interleaved codes; Parity check codes; Tail; Viterbi algorithm;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.535742
