Robust joint transceiver power allocation for multi-user downlink MIMO transmissions

Authors:
Chirawat Kotchasarn
Affiliations:
Rajamangala University of Technology, Thanyaburi, Thailand
Venue:
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Year:
2010

Citing 4
Cited 0

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Robust MSE equalizer design for MIMO communication systems in the presence of model uncertainties

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Abstract

We consider the problem of robust joint transmitter and receiver power allocation for downlink multiple input multiple output (MIMO) transmissions. The channel model is assumed to be Rayleigh frequency flat fading. The objective of power allocation is to minimize the total mean square error under total transmit power constraint. Under robustness issue, we consider joint power allocation with imperfect channel state information (CSI), where the CSI error is assumed to have Gaussian distribution. We show that this problem is formulated as a convex optim ization problem . Numerical results indicate the BER performance improvement obtained by considering the robustness into account in the joint power allocation process.