Title :
Triple-binary circular recursive systematic convolutional turbo codes
Author :
Gao, Yingzi ; Soleymani, M.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
We have investigated an extended non-binary turbo-coding scheme consisting of 8-ary (triple-binary) codes combined with 8PSK modulation in order to increase the bandwidth efficiency which is limited by QPSK modulation and the puncturing specified in DVB-RCS standard. The novel triple-binary code still has the features of circular recursive systematic convolutional (CRSC) codes, which avoid the degradation of the spectral efficiency. The influence of various parameters, such as the different frame sizes and the different permutations (interleaving), are also discussed. The symbol-by-symbol max-log-MAP algorithm is derived for this coding scheme. A comprehensive study over an AWGN channel is carried out to show the good performance of the proposed coding scheme.
Keywords :
AWGN channels; binary codes; convolutional codes; digital video broadcasting; interleaved codes; iterative decoding; maximum likelihood decoding; phase shift keying; quadrature phase shift keying; television standards; turbo codes; 8PSK; AWGN channel; DVB-RCS standard; QPSK; bandwidth efficiency; circular recursive systematic convolutional codes; frame sizes; interleaving; iterative decoding; nonbinary turbo-coding; permutations; spectral efficiency; symbol-by-symbol max-log-MAP algorithm; triple-binary codes; turbo codes; AWGN channels; Bandwidth; Code standards; Convolutional codes; Degradation; Digital video broadcasting; Interleaved codes; Modulation coding; Quadrature phase shift keying; Turbo codes;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088318
