Performance analysis of space-time block codes over keyhole Nakagami-m fading channels
作者： H. Shin , J.H. Lee
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摘要: In multiple-input-multiple-output (MIMO) fading environments, degenerate channel phenomena, called keyholes or pinholes, may exist under the realistic assumption that spatial is uncorrelated at transmitter and receiver, but has a rank-deficient transfer matrix. this paper, we analyze exact average symbol error rate (SER) of orthogonal space-time block codes (STBCs) with M-PSK M-QAM constellations over Nakagami-m channels in presence keyhole. We derive moment generating function (MGF) instantaneous signal-to-noise ratio (SNR) after decoding (signal combining) such channels. Using well-known MGF-based analysis approach, express SER STBC form single finite-range integrals whose integrand contains only derived MGF. Numerical results show keyhole significantly degrades performance from idealistic behaviors independent identically distributed MIMO
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