Asymptotic performance comparison between dominant eigenmode transmission and Tx/selection-Rx/MRC for MIMO diversity gain over a Rayleigh fading channel

Authors:
Ning Kong;John Cartelli
Affiliations:
ECE UCSD, Michiel Lotter Nextivity Inc.;Northrop Grumman
Venue:
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Year:
2009

Citing 2
Cited 0

Introduction to Space-Time Wireless Communications

Introduction to Space-Time Wireless Communications
Simple BER approximations for generalized selection combining (GSC) over Rayleigh fading channels and its SNR gap properties

MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications

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Abstract

In this paper, asymptotic symbol error rates (ASERs), of dominant eigenmode transmission (DET) for MIMO (multiple inputs and multiple outputs) diversity gain with small diversity order (the product of the number of Tx antennas and the number of Rx antennas) and Tx/selection (SC)-Rx/MRC with an arbitrary diversity order over a Rayleigh fading channel are derived. The SNR gaps among DET, Tx/SC-Rx/MRC and that with a full diversity gain of the same order are also derived. It is found that for a 2×2 MIMO, DET performs better over Tx/SC-Rx/MRC by 1.18dB and for 3×2 MIMO DET performs better by 1dB. It is also found that a 3×2 Tx/SC-Rx/MRC outperforms a 2×3 Tx/SCRx/MRC by 1dB. Simulation results match those in [1] and theoretic derivations in this paper.