Non-linear multiuser detection for circuit-switched and packet-switched integrated CDMA systems

S. Sfar, Khaled Letaief, R. D. Murch

Research output: Contribution to journalArticle


This paper assesses the impact of Layered Space-Time Multiuser Detection (LAST-MUD) in wireless circuit switched and packet switched modes integrated CDMA systems. The network is hence composed of packet and circuit radio mobile stations transmitting to an antenna array at the base station receiver. These users are organized in different groups and users in a particular group are allocated the same spreading code. Therefore, CDMA spreading technique will remove the interference between the groups and the layered space-time scheme will further remove the remaining interference between users. The effect of packet mode users on system performance is considered. Throughput and BER performances of packet and circuit mode users are hence investigated, respectively. The robustness of the LAST-MUD is also demonstrated against transmission power variation of packet mode users.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number53ND
Publication statusPublished - 2001
Externally publishedYes


ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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