Lattice decoding for joint detection in direct-sequence CDMA systems

Loïc Brunel, Joseph J. Boutros

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A new joint detection method based on sphere packing lattice decoding is presented in this paper. The algorithm is suitable for both synchronous and asynchronous multiple access direct-sequence code-division multiple-access (DS-CDMA) systems, and it may jointly detect up to 64 users with a reasonable complexity. The detection complexity is independent of the modulation size and large M-PAM or M-QAM constellations can be used. Furthermore, a theoretical gain analysis is performed in which the multiple-access system performance is derived from the lattice parameters.

Original languageEnglish
Pages (from-to)1030-1037
Number of pages8
JournalIEEE Transactions on Information Theory
Volume49
Issue number4
DOIs
Publication statusPublished - 1 Apr 2003

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Keywords

  • Code-division multiple access (CDMA)
  • Lattice decoding
  • Multiuser detection
  • Sphere decoder

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences

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