An efficient CDMA decoder for correlated information sources

Hadar Efraim, Nadav Yacov, Ori Shental, Ido Kanter

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.

Original languageEnglish
Article numberP07039
JournalJournal of Statistical Mechanics: Theory and Experiment
Volume2009
Issue number7
DOIs
StatePublished - 2009

Keywords

  • Error correcting codes
  • Message-passing algorithms

Fingerprint

Dive into the research topics of 'An efficient CDMA decoder for correlated information sources'. Together they form a unique fingerprint.

Cite this