Modified SMC method of blind multiuser detection for DS-CDMA systems over fading channels

Qian Yu, Guoan Bi, Liren Zhang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper presents the application of sequential Monte Carlo (SMC) methodology for blind detection in wireless direct sequence code division multiple access (DS-CDMA) systems over fading channels. It is known that the conventional SMC method requires a high-computational complexity that grows exponentially with the number of active users. This paper proposes a solution to this problem by employing Cholesky factorization to decompose the observed data into separate components for each user and then the parameters of each user are estimated with the SMC inference method under the decision feedback framework. Based on these concepts, an efficient blind decision feedback SMC (DF-SMC) receiver is developed for differentially encoded DS-CDMA systems. Simulation results demonstrate the promising performance of the proposed receiver for both flat fading and frequency-selective fading channels.

Original languageEnglish
Pages (from-to)1339-1349
Number of pages11
JournalWireless Personal Communications
Issue number4
Publication statusPublished - Dec 2007
Externally publishedYes


  • Cholesky factorization
  • Fading channels
  • Multiuser detection
  • Sequential Monte Carlo

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering


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