Reconfigurable Intelligent Surfaces (RIS) are passive or semi-passive heterogeneous metasurfaces which consist of many tunable elements. RIS is gaining momentum as a promising new technology to enable transforming the propagation environment into controllable parameter. In this paper, we investigate the co-design of per-subcarrier power allocation matrices and multielement RIS phase shifts in downlink wideband MIMO transmission using 28 GHz frequency bands. Our contributions in improving RIS-aided links include (1) enhanced system modeling with pathloss and blockage modeling, and uniform rectangular array (URA) design, (2) design of gradient ascent co-design algorithm, and (3) asymptotic (Big O) complexity analysis of proposed algorithm and runtime complexity evaluation.


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    Title :

    Spectral Efficiency optimization for mmWave Wideband MIMO RIS-assisted Communication


    Contributors:


    Publication date :

    2022-06-01


    Size :

    387833 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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