DocumentCode :
338750
Title :
Bit-estimate based soft decoding for vector quantization over channels with intersymbol interference
Author :
Skoglund, Mikael
Author_Institution :
Dept. of Signal Process., R. Inst. of Technol., Stockholm, Sweden
Volume :
1
fYear :
1999
fDate :
1999
Firstpage :
421
Abstract :
We introduce a new technique for source coding over noisy channels with intersymbol interference. The focus is on the decoding problem, and we present decoder structures that allow the decoding to be based on soft estimates of the transmitted bits. The new bit-estimate based decoders are optimal for, so called, linear mapping codebooks, and they provide structured low complexity approximations to optimal decoding for general codebooks. We also investigate encoder optimization, and combined source-channel coding design. Numerical simulations demonstrate that the bit-estimate based decoders are able to outperform a two-stage approach that uses Viterbi detection plus table look-up decoding
Keywords :
combined source-channel coding; computational complexity; decoding; intersymbol interference; source coding; telecommunication channels; vector quantisation; ISI; bit-estimate based soft decoding; combined source-channel coding design; decoder structures; encoder optimization; intersymbol interference; linear mapping codebooks; noisy channels; source coding; structured low complexity approximations; vector quantization; Channel coding; Decoding; Delay; Error correction; Image coding; Intersymbol interference; Noise robustness; Redundancy; Vector quantization; Zinc;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
Type :
conf
DOI :
10.1109/ICC.1999.767975
Filename :
767975
Link To Document :
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