Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/2251

Optimal antenna selection based on capacity maximization for MIMO systems in correlated channels

Authors Dai, L
Sfar, S
Ben Letaief, K
Issue Date 2006
Source IEEE transactions on communications , v. 54, (3), 2006, MAR, p. 563-573
Summary Recent work has shown that multiple-input multipleoutput (MIMO) systems with multiple antennas at both the transmitter and receiver are able to achieve great capacity improvement. In such systems, it is desirable to select a subset of the available antennas so as to reduce the number of radio frequency (RF) chains. This paper addresses the problem of antenna selection in correlated channels. We consider a narrowband communication system with M transmit and N receive antennas. We present the criterion for selecting the optimal L-t out of M transmit and L-t out of N receive antennas in terms of capacity maximization, assuming that only the long-term channel statistics, instead of the instantaneous channel-state information, are known. Simulations will be used to validate our theoretical analysis and demonstrate that the number of required RF chains can be significantly decreased using our proposed selection strategy, while achieving even better performance than the conventional MIMO system without antenna selection.
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ISSN 0090-6778
Language English
Format Article
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