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Publication Citation: Diversity Performance of a Practical Non-Coherent Detect-and-Forward Receiver

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Author(s): Michael R. Souryal; Huiqing You;
Title: Diversity Performance of a Practical Non-Coherent Detect-and-Forward Receiver
Published: November 30, 2008
Abstract: We propose a non-coherent receiver for the fixed detect-and-forward relay channel and derive a closed-form tight upper bound on its bit error probability in Rayleigh fading channels. Using this upper bound, we show that the receiver achieves nearly full, second-order diversity, and the gap from full diversity is quantified. While the general receiver depends on the source-relay channel statistics, we show that similar diversity performance can be achieved when only first-order statistics of the source-destination channel are known. The receiver is derived using the generalized likelihood ratio test to eliminate dependence on the channel gains, applies to M-ary orthogonal signal sets, and is independent of the fading distribution. The results demonstrate that low-complexity transceivers, such as those used in some sensor networks, can benefit from cooperative diversity.
Conference: IEEE Global Telecommunications Conference (GLOBECOM) 2008
Pages: 6 pp.
Location: New Orleans, LA
Dates: November 30-December 4, 2008
Keywords: Detect-and-forward; Cooperative diversity; Generalized likelihood ratio; Non-coherent; Relay
Research Areas: Wireless
PDF version: PDF Document Click here to retrieve PDF version of paper (182KB)