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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fast Precoding Scheme for Reconfigurable Intelligent Surfaces


    Contributors:


    Publication date :

    2023-10-10


    Size :

    1074982 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Wideband Localization with Reconfigurable Intelligent Surfaces

    Wang, Ziyi / Liu, Zhenyu / Shen, Yuan et al. | IEEE | 2022


    Dynamic edge computing empowered by reconfigurable intelligent surfaces

    Paolo Di Lorenzo / Mattia Merluzzi / Emilio Calvanese Strinati et al. | BASE | 2022

    Free access


    Autonomous Reconfigurable Intelligent Surfaces Through Wireless Energy Harvesting

    Ntontin, Konstantinos / Boulogeorgos, Alexandros-Apostolos A. / Bjornson, Emil et al. | IEEE | 2022