Sparsely spread CDMA - A statistical mechanics-based analysis

Jack Raymond*, David Saad

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Sparse code division multiple access (CDMA), a variation on the standard CDMA method in which the spreading (signature) matrix contains only a relatively small number of nonzero elements, is presented and analysed using methods of statistical physics. The analysis provides results on the performance of maximum likelihood decoding for sparse spreading codes in the large system limit. We present results for both cases of regular and irregular spreading matrices for the binary additive white Gaussian noise channel (BIAWGN) with a comparison to the canonical (dense) random spreading code. © 2007 IOP Publishing Ltd.

Original languageEnglish
Pages (from-to)12315-12333
Number of pages19
JournalJournal of Physics A: Mathematical and Theoretical
Volume40
Issue number41
DOIs
Publication statusPublished - 12 Oct 2007

Bibliographical note

© 2007 IOP Publishing Ltd

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