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Improving power allocation to MIMO eigenbeams under imperfect channel estimation

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1 Author(s)
Willink, T.J. ; Commun. Res. Centre, Ottawa, Ont., Canada

Eigenbeamforming exploits the spatial diversity of the MIMO channel by multiplexing data substreams along orthogonal modes. Estimation errors result in self-interference, which must be taken into account in the selection of modes for transmission and the allocation of transmitter power. Using perturbation analysis to evaluate the self-interference, a technique is proposed for determining the power allocation which achieves a specified performance, based only on the information available at the receiver.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 7 )