Diversity reception of DAPSK over generalized fading channels

TitleDiversity reception of DAPSK over generalized fading channels
Publication TypeJournal Article
Year of Publication2005
AuthorsMa, Y., Q. T. Zhang, R. Schober, and S. Pasupathy
JournalWireless Communications, IEEE Transactions on
Volume4
Pagination1834 - 1846
Date Publishedjul.
ISSN1536-1276
Keywordsamplitude shift keying, bit error probability, DAPSK, decision variable-based moment generating function approach, differential amplitude and phase-shift keying, differential phase shift keying, diversity reception, error statistics, maximum likelihood detection, maximum likelihood-based detectors, Nakagami fading channels, postdetection equal gain combining, Rician channels, Rician fading channels
Abstract

The accurate performance evaluation of differential amplitude and phase-shift keying (DAPSK) with postdetection equal gain combining (EGC) over generalized fading channels is of great theoretical interest and practical importance. In this paper, by using a decision variable-based moment generating function approach, exact error probability results for DAPSK over generalized Rician and Nakagami fading channels are derived, taking into account the effects of all the system and fading channel parameters. Several maximum likelihood (ML)-based detectors that do not require channel state information (CSI) are proposed for generalized Rician fading channels, and an exact bit error probability (BEP) union bound for the ML detection is derived. Assuming CSI, a performance upper bound for DAPSK with EGC is also presented. Simulation and numerical results show when both detectors have no CSI, the conventional DAPSK detector may perform closely to (though worse than) the ML detector. However, the EGC receiver with CSI performs substantially better than the ML detector without CSI, and very closely to the coherent APSK detector.

URLhttp://dx.doi.org/10.1109/TWC.2005.850315
DOI10.1109/TWC.2005.850315

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