DocumentCode :
1614202
Title :
Improving faded turbo code performance using biased channel side information
Author :
Wang, Charles C.
Author_Institution :
Aerosp. Corp., El Segundo, CA, USA
Volume :
1
fYear :
1999
fDate :
6/21/1905 12:00:00 AM
Firstpage :
543
Abstract :
Turbo decoding is based on the concept of maximum likelihood decision on blocks of data. The decision on a bit affects the decoding of subsequent bits. Fading is a type of corruption whose effect can be extended over a period of multiple bits, resulting in significant performance degradation for turbo codes. In this paper, a Markov process is utilized to model a fading channel, and bit error rate (BER) performance using BPSK with turbo code is examined. A channel interleaver is used to improve performance. In addition, a technique of using biased channel side information for turbo decoding is introduced. It is demonstrated that this technique can further improve performance
Keywords :
Markov processes; channel coding; error correction codes; error statistics; fading channels; interleaved codes; maximum likelihood decoding; phase shift keying; turbo codes; BER performance; BPSK; Markov process; biased channel side information; bit error rate; channel interleaver; fading channel; maximum likelihood decision; turbo code performance; turbo decoding; AWGN; Binary phase shift keying; Bit error rate; Degradation; Fading; Forward error correction; Interleaved codes; Markov processes; Maximum likelihood decoding; Turbo codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-5538-5
Type :
conf
DOI :
10.1109/MILCOM.1999.822741
Filename :
822741
Link To Document :
بازگشت