This paper investigates the simultaneously transmitting and reflecting reconfigurable surface (STAR-RIS) assisted physical layer key generation (PKG) for multiuser networks. We propose a novel STAR-RIS-assisted PKG protocol and formulate a sum secret key rate maximization problem by jointly optimizing the active and passive beamforming. To address the non-convex problem, a block coordinate descent (BCD) algorithm is developed, using both semidefinite relaxation (SDR) and successive convex approximation (SCA) methods to optimize active and passive precoding alternately. Simulation results demonstrate the key generation performance of the proposed algorithm outperforms schemes that STAR-RISs using the random configuration and conventional reflecting/transmitting-only RISs.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    STAR-RIS Assisted Secret Key Generation: Joint Active and Passive Precoding Design


    Contributors:
    Wan, Zheng (author) / Chen, Yajun (author) / Hu, Xiaoyan (author) / Huang, Kaizhi (author) / Jin, Liang (author) / Yang, Jinmei (author)


    Publication date :

    2023-10-10


    Size :

    1333345 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Joint Transmission and Deployment Optimization for Active STAR-RISs Assisted Networks

    Wang, Zhen / Pan, Yijin / Cheng, Ming et al. | IEEE | 2023




    Boosting Secret Key Generation for IRS-Assisted Symbiotic Radio Communications

    Liu, Yang / Wang, Meng / Xu, Jing et al. | IEEE | 2021


    An active/passive joint for reconfiguration applications

    Riabtsev, Mykhailo / Petuya Arcocha, Víctor / Riera Bernardo, Aitor et al. | BASE | 2019

    Free access