Title :
Analysis of LDPC Codes for Compression of Nonuniform Sources with Side Information Using Density Evolution
Author :
Bhattar, Raghunadh K. ; Ramakrishnan, R.K. ; Dasgupta, S.K.
Author_Institution :
IISc, Bangalore, India
Abstract :
In this paper, we explore the use of LDPC codes for nonuniform sources under distributed source coding paradigm. Our analysis reveals that several capacity approaching LDPC codes indeed do approach the Slepian-Wolf bound for nonuniform sources as well. The Monte Carlo simulation results show that highly biased sources can be compressed to 0.049 bits/sample away from Slepian-Wolf bound for moderate block lengths.
Keywords :
Monte Carlo methods; parity check codes; source coding; LDPC code; Monte Carlo simulation; Slepian-Wolf bound; density evolution; distributed source coding; nonuniform sources compression; Data analysis; Data compression; Decoding; Entropy coding; Facsimile; Information analysis; Parity check codes; Probability density function; Source coding; Turbo codes;
Conference_Titel :
Data Compression Conference (DCC), 2010
Conference_Location :
Snowbird, UT
Print_ISBN :
978-1-4244-6425-8
Electronic_ISBN :
1068-0314
DOI :
10.1109/DCC.2010.65
