A new adaptive Soft-in Soft-out decoding method of error resilient arithmetic codes

Author

Pang, Yuye ; Wen, Mi ; Yang, Junjie

Author_Institution

Sch. of Comput. & Inf. Eng., Shanghai Univ. of Electr. Power, Shanghai, China

fYear

2010

fDate

22-24 Sept. 2010

Firstpage

239

Lastpage

242

Abstract

Iterative Joint Source Channel Decoding (IJSCD) is an effective technique to improve the overall performance of communication systems. However, it is based on Soft-in Soft-out (SISO) decoding of error correcting codes. In this paper, a new SISO decoding method of error resilient arithmetic codes (ERAC) is proposed, which is based on the conventional BCJR algorithm but sequentially prune nodes according to the channel conditions. The performance of this decoding method across AWGN channel is evaluated. Simulation results show that there are about 1.2dB gains with respect to the performance of traditional decoding of arithmetic codes, and its performance is even better than the existing SISO decoding method of ERAC implemented by the M-BCJR algorithm.

Keywords

AWGN channels; adaptive decoding; arithmetic codes; combined source-channel coding; error correction codes; AWGN channel; SISO method; adaptive soft in soft out decoding method; error correcting code; error resilient arithmetic code; iterative joint source channel decoding; Decoding; Encoding; Iterative decoding; Joints; Measurement; Redundancy; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics and Electronics (PrimeAsia), 2010 Asia Pacific Conference on Postgraduate Research in

Conference_Location

Shanghai

Print_ISBN

978-1-4244-6735-8

Electronic_ISBN

978-1-4244-6736-5

Type

conf

DOI

10.1109/PRIMEASIA.2010.5604916

Filename

5604916