Antenna Selection for MIMO Systems with Closely Spaced Antennas.

EURASIP J. Wireless Comm. and Networking 01/2009; 2009. DOI:10.1155/2009/739828
Source: DBLP
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    ABSTRACT: This paper concerns with the sensor management problem in collocated Multiple-Input Multiple-Output (MIMO) radars. After deriving the Cramer-Rao Lower Bound (CRLB) as a performance measure, the antenna allocation problem is formulated as a standard Semi-definite Programming (SDP) for the single-target case. In addition, for multiple unresolved target scenarios, a sampling-based algorithm is proposed to deal with the non-convexity of the cost function. Simulations confirm the superiority of the localization results under the optimal structure.
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    ABSTRACT: MIMO system can offer considerable capacity. But as the antenna’s number increasing, the costs of hardware such as RF chains are very expensive, and limit the using of MIMO system. The traditional antenna selection algorithms based on correlation can give a low complexity but capacity performance loss is large. In this paper, a fast antenna selection algorithm is proposed for MIMO system based on dissimilarity coefficient criteria. The proposed algorithm can be used to calculate the correlation of antennas better, supplies more efficient capacity performance, and has the lower complexity. The simulation results verify the conclusions.

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