Analysis on Sum Rate of Random Beamforming with Minimum Mean Squared Error (MMSE) Receive Beamforming

Janghoon YANG  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.9   pp.3033-3037
Publication Date: 2012/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3033
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
extreme value theory,  random beamforming,  MMSE beamforming,  random matrix,  

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Random beamforming(RBF) is a simple and practical method that can realize multi-user multi-input multi-output (MU-MIMO) systems. In this letter, we analyze the average sum rate of RBF with minimum mean squared error (MMSE) receive beamforming. To this end, we exploit the empirical eigenvalue distribution [5] and extreme value theory. The numerical verification shows that the proposed analysis provides a good approximation of the average sum rate of RBF even for the small number of antennas.