An efficient CDMA decoder for correlated information sources
Information Theory
2010-03-24 v1 Statistical Mechanics
math.IT
Abstract
We consider the detection of correlated information sources in the ubiquitous Code-Division Multiple-Access (CDMA) scheme. We propose a message-passing based scheme for detecting correlated sources directly, with no need for source coding. The detection is done simultaneously over a block of transmitted binary symbols (word). Simulation results are provided demonstrating a substantial improvement in bit-error-rate in comparison with the unmodified detector and the alternative of source compression. The robustness of the error-performance improvement is shown under practical model settings, including wrong estimation of the generating Markov transition matrix and finite-length spreading codes.
Cite
@article{arxiv.1001.5135,
title = {An efficient CDMA decoder for correlated information sources},
author = {Hadar Efraim and Nadav Yacov and Ori Shental and Ido Kanter},
journal= {arXiv preprint arXiv:1001.5135},
year = {2010}
}
Comments
11 pages