DocumentCode
3046658
Title
Modified truthiness propagation algorithm for lossy source compression based on LDGM codes
Author
Zheng, Jianping ; Bai, Baoming ; Li, Ying ; Liu, Jingmei
Author_Institution
State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China
fYear
2010
fDate
21-23 Oct. 2010
Firstpage
1
Lastpage
3
Abstract
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.
Keywords
probability; radiowave propagation; source coding; LDGM codes; a priori probability; lossy source compression; low density generator matrix codes; source sequence reconstruction; truthiness propagation encoding algorithm; Approximation algorithms; Belief propagation; Generators; Propagation losses; Rate-distortion; Source coding; LDGM codes; lossy source compression;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications and Signal Processing (WCSP), 2010 International Conference on
Conference_Location
Suzhou
Print_ISBN
978-1-4244-7556-8
Electronic_ISBN
978-1-4244-7554-4
Type
conf
DOI
10.1109/WCSP.2010.5633438
Filename
5633438
Link To Document