Diversity signal reception via soft decision combining

Qian Zhang, Pramod K. Varshney

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The problem of diversity signal reception using quantized data is considered. This problem arises in situations where multiple receivers are employed over a geographically broad area. We propose a method for the design of the quantizers that are used by the receiver to make soft decisions. This quantizer minimizes the mean-squared error between the quantizer output and the log-likelihood ratio associated with the receiver observation. The soft decisions are then combined at a central location to yield the final decision. Our quantizers are then applied to the coherent detection of a BPSK signal over Rayleigh fading channels. Simulation results show that using coarse quantizers yields close to optimum performance.

Original languageEnglish (US)
Pages (from-to)2937-2940
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - 2001

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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