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On the sum rate of ZF detectors in correlated K fading MIMO channels

Michail Matthaiou (Institutionen för signaler och system, Signalbehandling) ; Nestor D. Chatzidiamantis ; George K. Karagiannidis
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Prague, CZECH REPUBLIC, MAY 22-27, 2011 (1520-6149). p. 3244-3247. (2011)
[Konferensbidrag, refereegranskat]

This paper presents a detailed sum rate investigation of Zero-Forcing (ZF) detectors over composite multiple-input multiple-output (MIMO) channels. To this end, we consider the generic K distribution (Rayleigh/gamma distribution) to model the composite fading fluctuations and also assume the general case of semi-correlated small-scale fading. Novel exact analytical expressions are derived for the achievable sum rate followed by asymptotic expressions in the low Signal-to-Noise ratio (SNR) regime. In parallel, new, closed-form upper and lower bounds on the sum rate are derived that remain tight for all SNRs. The theoretical analysis is validated via a set of Monte-Carlo simulations.


Article number 5946713



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Denna post skapades 2011-01-20. Senast ändrad 2016-08-22.
CPL Pubid: 135710

 

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