In this paper, a multi-user MIMO using zeroforcing (ZF)-based multiplexing coordinated with user-wise spatial diversity is proposed assuming time-division duplex (TDD). The downlink and uplink signal-to-noise ratios (SNRs) are analyzed for the given multi-user MIMO channel. It is shown that the downlink capacity is the same for all users while the uplink capacity is not necessarily the same. The closed-form expressions for the downlink and uplink SNRs conditioned on the 2-user virtual MIMO channel are derived. It is shown that the uplink sum capacity is higher than the downlink sum capacity. The downlink and uplink capacities are numerically evaluated by Monte Carlo simulation in a Rayleigh fading environment. It is shown that the link capacity can be improved by increasing the number of user antennas while keeping the ZF matrix size in the same level.


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    Title :

    Multi-user MIMO using ZF-based Multiplexing Coordinated with User-wise Spatial Diversity


    Contributors:


    Publication date :

    2020-11-01


    Size :

    923931 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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