|Table of Contents|

[1] Guo Dongliang**, Chen Xiaoqiang, Wu Lenan,. Soft Decoding Scheme of Convolution CodeCombined with Huffman Coding* [J]. Journal of Southeast University (English Edition), 2002, 18 (3): 208-211. [doi:10.3969/j.issn.1003-7985.2002.03.003]
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Soft Decoding Scheme of Convolution CodeCombined with Huffman Coding*()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
18
Issue:
2002 3
Page:
208-211
Research Field:
Information and Communication Engineering
Publishing date:
2002-09-30

Info

Title:
Soft Decoding Scheme of Convolution CodeCombined with Huffman Coding*
Author(s):
Guo Dongliang**;  Chen Xiaoqiang;  Wu Lenan
Department of Radio Engineering, Southeast University, Nanjing 210096, China
Keywords:
soft output Viterbi decoding;  a priori information;  Huffman coding;  convolution code
PACS:
TN911.21
DOI:
10.3969/j.issn.1003-7985.2002.03.003
Abstract:
This paper proposes a modification of the soft output Viterbi decoding algorithm(SOVA)which combines convolution code with Huffman coding. The idea is to extract the bit probability information from the Huffman coding and use it to compute the a priori source information which can be used when the channel environment is bad. The suggested scheme does not require changes on the transmitter side. Compared with separate decoding systems, the gain in signal to noise ratio is about 0.5-1.0 dB with a limited added complexity. Simulation results show that the suggested algorithm is effective.

References:

[1] Hagenauer J. Source-controlled channel decoding[J]. IEEE Trans Communications, 1995, 43(9):2449-2457.
[2] Vembu S, Verdu S, Steinberg Y. Source-channel separation theorem revisited[J]. IEEE Trans Information Theory, 1995, 41(1):44-54.
[3] Sayhood K, Out H H, Demir N. Joint source/channel coding for variable length codes[J]. IEEE Trans Communications, 2000, 48(5):787-794.
[4] Park M, Miller D J. Joint source-channel decoding for variable-length encoded data by exact and approximate MAP sequence estimation[J]. IEEE Trans Communications, 2000, 48(1):1-6.

Memo

Memo:
* The project supported by the National Natural Science Foundation of China(60072013).
** Born in 1976, male, graduate.
Last Update: 2002-09-20