Sparse code multiple access (SCMA) is an attractive non-orthogonal multiple access scheme for wireless communications. Meanwhile, space-time block coding (STBC) can achieve high diversity gains in fading channels. This paper proposes an uplink SCMA-STBC with a space-time-based message-passing algorithm (ST-MPA). Moreover, precoding is employed in the proposed SCMA-STBC to reduce the complexity of the receiver. The BER lower bound is derived for the proposed system. Simulation results show that the system with precoding provides a better BER performance than the case without precoding.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Uplink SCMA with STBC in Fading Channels


    Contributors:
    Li, Huan-Ying (author) / Liu, Zi-Jing (author) / Yu, Qi-Yue (author) / Xiang, Wei (author) / Adachi, Fumiyuki (author)


    Publication date :

    2020-05-01


    Size :

    279452 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    A Suboptimal Algorithm for SCMA Codebook Design over Uplink Rayleigh Fading Channels

    Tian, Lining / Zhong, Jie / Zhao, Minjian et al. | IEEE | 2018


    SCMA Uplink Decoding with Codebook Collision

    Yang, Yanjun / Zhao, Yuping / Li, Dou | IEEE | 2017


    Design on Polarization Weight-Based Polar Coded SCMA System over Fading Channels

    Liang, Kexin / Feng, Bowen / Jiao, Jian et al. | IEEE | 2019


    Channel Estimation for Uplink SCMA Systems with Reduced Training Blocks

    Heo, Jehyun / Jung, Insik / Kim, Taehyung et al. | IEEE | 2018


    SCMA-Based Uplink and Downlink Resource Reuse for Clustered mMTC

    Zhong, Fangsheng / Zhao, Ming / Zhou, Wuyang | IEEE | 2017