A critical factor in the deployment of multiple input multiple-output systems is the cost of multiple analog transmit/receive chains. This problem can be mitigated by antenna subset selection at the transmitter/receiver. With antenna selection, a small number of analog radio frequency chains are multiplexed between a much larger number of transmit/receive antenna elements. In this paper, we present a low complexity approach to receive antenna selection for capacity maximization, based on the theory of convex optimization. By relaxing the antenna selection variables from discrete to continuous, we arrive at a convex optimization problem. We show via extensive Monte-Carlo simulations that the proposed algorithm provides performance very close to that of optimal selection based on exhaustive search. We consecutively optimize not only the selection of the best antennas but also the angular orientation of individual antenna elements in the array for a so-called true polarization diversity system.


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    Title :

    Antenna selection in polarization diverse MIMO transmissions with convex optimization


    Contributors:
    Habib, A. (author) / Krasniqi, B. (author) / Rupp, M. (author)


    Publication date :

    2011-11-01


    Size :

    178898 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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