Statistical mechanical aspects of joint source-channel coding
摘要
An MN-Gallager Code over Galois fields, , based on the Dynamical Block Posterior probabilities (DBP) for messages with a given set of autocorrelations is presented with the following main results: (a) for a binary symmetric channel the threshold, , is extrapolated for infinite messages using the scaling relation for the median convergence time, ; (b) a degradation in the threshold is observed as the correlations are enhanced; (c) for a given set of autocorrelations the performance is enhanced as is increased; (d) the efficiency of the DBP joint source-channel coding is slightly better than the standard gzip compression method; (e) for a given entropy, the performance of the DBP algorithm is a function of the decay of the correlation function over large distances.
关键词
引用
@article{arxiv.cond-mat/0303033,
title = {Statistical mechanical aspects of joint source-channel coding},
author = {Ido Kanter and Haggai Kfir},
journal= {arXiv preprint arXiv:cond-mat/0303033},
year = {2009}
}
备注
6 pages