Title :
Multilevel block codes for Rayleigh-fading channels
Author :
Zhang, Lin ; Vucetic, Branka
Author_Institution :
Dept. of Electr. Eng., Sydney Univ., NSW, Australia
fDate :
1/1/1995 12:00:00 AM
Abstract :
New multilevel block codes for Rayleigh-fading channels are presented. At high signal-to-noise ratios (SNRs), the proposed block codes can achieve better bit error performance over TCM codes, optimum for fading channels, with comparable decoder complexity and bandwidth efficiency. The code construction is based on variant length binary component block codes. As component codes for the 8-PSK multilevel block construction, the authors propose two modified forms of Reed-Muller codes giving a good trade-off between the decoder complexity and the effective code rates. Code design criteria are derived from the error performance analysis. Multistage decoding shows very slight degradation of bit error performance relative to the maximum likelihood algorithm
Keywords :
Rayleigh channels; Reed-Solomon codes; block codes; computational complexity; decoding; error statistics; fading; phase shift keying; time-varying channels; variable length codes; 8-PSK multilevel block construction; Rayleigh-fading channels; Reed-Muller codes; bandwidth efficiency; bit error performance; code construction; code design criteria; decoder complexity; effective code rates; error performance analysis; fading channels; multilevel block codes; multistage decoding; signal-to-noise ratios; variant length binary component block codes; Bandwidth; Block codes; Convolutional codes; Data communication; Degradation; Fading; Maximum likelihood decoding; Modulation coding; Performance analysis; Rayleigh channels;
Journal_Title :
Communications, IEEE Transactions on
