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Modified truthiness propagation algorithm for lossy source compression based on LDGM codes

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4 Author(s)
Jianping Zheng ; State Key Lab. of Integrated Services Networks, Xidian Univ., Xi''an, China ; Baoming Bai ; Ying Li ; Jingmei Liu

This letter considers the lossy source compression of a binary symmetric source using low-density generator matrix (LDGM) codes and truthiness propagation encoding algorithm. And a simple variant on the truthiness propagation is proposed by softening the a priori probability of the reconstructed source sequence. Comparisons with the truthiness propagation reveal that the proposed algorithm has better rate-distortion performance at low-to-medium code rates.

Published in:

Wireless Communications and Signal Processing (WCSP), 2010 International Conference on

Date of Conference:

21-23 Oct. 2010