Precoding is one of the challenges for the Reconfigurable Intelligent Surfaces (RIS)-assisted wireless communication system. The generally large RIS array and huge number of units lead to the high precoding complexity and feedback overhead. In this paper, a discrete Fourier transform (DFT) codebook-based multi-user precoding scheme is proposed to reduce the complexity and feedback overhead of precoding. To improve the precoding performance of multiple users, a user pairing strategy is introduced before transmission to ensure that there is a certain degree of orthogonality of the channels between users who are transmitting at the same time. The performance of the proposed scheme is verified by simulation experiments.


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    Titel :

    Fast Precoding Scheme for Reconfigurable Intelligent Surfaces


    Beteiligte:
    Chi, Liangang (Autor:in) / Duan, Gaoming (Autor:in) / Zhang, Boyuan (Autor:in)


    Erscheinungsdatum :

    2023-10-10


    Format / Umfang :

    1074982 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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