Combined with block diagonalization (BD) methods, Tomlinson-Harashima (TH) precoding and vector perturbation (VP) are attractive non-linear precoding techniques for multi-user multiple-input multiple-output (MU-MIMO) broadcast channels. In this paper, we first briefly review several non- linear precoding schemes including BD-VP, TH and zero-forcing (TH-ZF) and TH-VP, and then derive the achievable sum rate of the hybrid TH-VP precoding. After that, we compare the achievable sum rates and diversity gains of these non-linear precoding schemes with zero-forcing VP (ZF-VP) and dirty paper coding (DPC). The achievable sum rate of TH-VP is shown to approach the sum capacity of DPC asymptotically and outperforms BD-VP, TH-ZF and ZF- VP.


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    Title :

    Performance Comparison of Non-Linear Precoding Schemes for Multi-User MIMO Broadcast Channels


    Contributors:
    Chen, Rui (author) / Zhou, Hong (author) / Moretti, Marco (author)


    Publication date :

    2019-09-01


    Size :

    198947 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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