We present a transmit antenna subset selection scheme for an underlay cognitive system serving multiple secondary receivers. The secondary system employs zero-forcing beamforming to nullify the interference to multiple primary users and eliminate inter-user interference to the secondary users simultaneously. Simulation results show that the proposed scheme achieves near-optimal performance with low computational complexity. Lastly, an optimal power allocation strategy is also introduced to improve the secondary network throughput.


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    Title :

    Transmit Antenna Selection for Multi-User Underlay Cognitive Transmission with Zero-Forcing Beamforming


    Contributors:


    Publication date :

    2016-09-01


    Size :

    177998 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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