Multiple-symbol differential detection with interference suppression

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Abstract

A multiple-symbol differential detector is formulated for M-ary differential phase-shift keying modulation where the channel state information is unknown to the receiver. The maximum-likelihood decision statistic is derived for the detector, and its performance is demonstrated by analysis and simulation. Under the Gaussian assumption for the aggregate Interference plus noise, an exact expression for the symbol pairwise error probability is developed for M-ary differential phase-shift keying modulation over a diversity, slow-fading Rayleigh channel in the presence of an interference source. A simpler expression of the pairwise error probability is developed for the asymptotic case of large signal-to-noise ratio and small signal-to-interference ratio. It is shown that with an increasing observation interval, the performance of the differential detector over an unknown channel approaches that of optimum combining with known channel.

Original languageEnglish (US)
Pages (from-to)208-217
Number of pages10
JournalIEEE Transactions on Communications
Volume51
Issue number2
DOIs
StatePublished - Feb 2003

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • Differential detection
  • Diversity reception
  • Error probability performance
  • Interference suppression
  • Optimum combining

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