Fractionally spaced coherent detection with DF MAP estimation of statistically known time-varying Rayleigh fading channel

H. Liu, Z. Siveski, N. Ansari

Research output: Contribution to conferencePaperpeer-review

Abstract

Coherent symbol by symbol detection using fractionally spaced samples in a time-varying frequency flat Rayleigh fading channel is presented. The proposed detector incorporates a decision feedback (DF) maximum a posteriori (MAP) channel estimator that can be applied to a time-varying flat Rayleigh fading channel with an arbitrary but known spaced-time correlation function. The best achievable bit error rate performance for this detector is obtained by assuming correct bit decisions while performing channel estimation. Differential encoding is used in order to prevent the phase reversal phenomenon during the estimator's operation in a decision directed mode. Numerical results suggest that with only a few samples per symbol and with a short memory estimator depth, most of the gain due to oversampling can be achieved.

Original languageEnglish (US)
Pages419-423
Number of pages5
StatePublished - Dec 1 1997
EventProceedings of the 1997 IEEE Global Telecommunications Mini-Conference - Phoenix, AZ, USA
Duration: Nov 3 1997Nov 8 1997

Other

OtherProceedings of the 1997 IEEE Global Telecommunications Mini-Conference
CityPhoenix, AZ, USA
Period11/3/9711/8/97

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Global and Planetary Change

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