Title :
Improved upper bound on the bit error probability of turbo codes for ML decoding with imperfect CSI in a Rayleigh fading channel
Author :
Shin, Hyundong ; Lee, Jae Hong
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
We investigate an improved upper bound on the bit error probability of turbo codes for the maximum likelihood (ML) decoding with imperfect channel state information (CSI) in a fully interleaved Rayleigh fading channel. The upper bound is based on the Viterbi & Viterbi (see Proc. of the IEEE Inform. Theory Workshop ´98, San Diego, CA, Feb. 1998, p.72) bound and is also compared with iterative decoding using the log-MAP algorithm. It is shown that the upper bound well approximates the simulation results of the iterative decoding below a BER of 10-5
Keywords :
AWGN; Rayleigh channels; convolutional codes; error statistics; iterative decoding; maximum likelihood decoding; turbo codes; BER; BPSK; ML decoding; Viterbi bound; additive white Gaussian noise; binary phase shift keying; bit error probability; imperfect CSI; imperfect channel state information; interleaved Rayleigh fading channel; iterative decoding; log-MAP algorithm; maximum likelihood decoding; recursive systematic convolutional encoders; simulation results; turbo codes; upper bound; Channel state information; Conferences; Error probability; Fading; Iterative algorithms; Iterative decoding; Maximum likelihood decoding; Turbo codes; Upper bound; Viterbi algorithm;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965414
