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Optimal partial feedback design for MIMO block fading channels with feedback capacity constraint

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3 Author(s)
Lau, V.K.N. ; Lucent Technol. Bell Labs., USA ; Youjian Liu ; Tai-Ann Chen

In this paper, we focus in investigating the optimal MIMO transmission and the optimal feedback strategies for MIMO link capacity when the feedback link is causal and has a capacity constraint. We show that the design of the optimal feedback scheme is identical to the design of vector quantizer (Lloyd's algorithm) with a modified distortion measure. In the general case, the optimal feedback strategy has a general form of power water-filling cascaded with beamforming matrix as well.

Published in:

Information Theory, 2003. Proceedings. IEEE International Symposium on

Date of Conference:

29 June-4 July 2003