Performance of decorrelating receivers in multipath rician fading channels

Kegen Yu*, Ian Oppermann

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This letter focuses on the performance analysis of the decorrelating receiver in multipath Rician faded CDMA channels. M-ary QAM scheme is employed to improve the spectral efficiency. Approximate expressions are first derived for the two performance indexes: the average symbol error rate (SER) and the average bit error rate (BER) when the decorrelating-first receiver perfectly knows the channel information of the user of interest. To achieve desirable closed-form expressions of the SER and the BER, we exploit results in large system analysis and make assumptions of a high signal-to-interference ratio (SIR) and/or a small Rician K-factor. To measure the receiver performance in the practical scenario, we further derive expressions to approximate the average SER and BER of the decorrelating-first scheme with channel uncertainty. Simulation results demonstrate that the analytical results can also be employed to evaluate the performance of the combining-first receiver.

Original languageEnglish
Article number1687713
Pages (from-to)2009-2016
Number of pages8
JournalIEEE Transactions on Wireless Communications
Volume5
Issue number8
DOIs
Publication statusPublished - Aug 2006
Externally publishedYes

Keywords

  • Decorrelating-first/combining-first receiver
  • M-ary QAM
  • Multipath Rician fading
  • Symbol/bit error rate

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