Multiuser detection of asynchronous CDMA with frequency offset

Mengkang Peng*, Yingjie Jay Guo, Stephen K. Barton

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This letter presents a near-far resistant detection scheme for asynchronous code-division multiple access with frequency offset. Based on a one-shot technique and Taylor expansion, a zeroth-order and a first-order one-shot linear decorrelating detector (LDD) are proposed. The zeroth-order LDD has simple architecture but suffers performance degradation for large frequency offset. The first-order one-shot LDD, with increased complexity, has very good near-far resistant property even for large frequency offset. Two versions of the first-order one-shot LDD are investigated according to different Taylor expansion approaches. The feasibility of the proposed detectors is demonstrated by computer simulations.

Original languageEnglish
Pages (from-to)952-960
Number of pages9
JournalIEEE Transactions on Communications
Volume49
Issue number6
DOIs
Publication statusPublished - Jun 2001
Externally publishedYes

Keywords

  • CDMA system
  • Frequency offset
  • Multiuser detection
  • Near-far resistance

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