A generalized performance study of DS-CDMA uplink/downlink receivers in Nakagami wideband fading channel

Mohammed Abdel-Hafez, Fatih Alagöz

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this paper, we consider a mobile system consisting of a single isolated circular cell with K independent users simultaneously sharing the channel using binary DS-CDMA to establish a full duplex channel with the base station. Both coherent and differential detection RAKE receivers with Maximal Ratio Combining (MRC) techniques are considered. The performance of two uplink/downlink receivers in Nakagami wideband fading channel is studied. Our approach relies on the use of total instantaneous interference power calculations instead of the use of average power approximations. We analyzed and derived new exact formulae for bit error probabilities for the considered system, and presented a set of numerical results both for the exact formulae and Gaussian approximation. The performance comparisons suggest that the exact formulae provide superior performance to Gaussian approximation especially at low number of users and either high fading parameters of the desired user or low fading parameters of the MAIs.

Original languageEnglish
Pages (from-to)333-343
Number of pages11
JournalIEICE Transactions on Communications
VolumeE88-B
Issue number1
DOIs
Publication statusPublished - Jan 2005

Keywords

  • Bit error probability
  • DS-CDMA
  • Differential and coherent RAKE receivers
  • Multiple-access interference
  • Nakagami distribution
  • Wideband fading channel

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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