In this paper, we propose a new method for nonorthogonal multiuser downlink transmission, referred to as multiple-input multiple-output lattice partition multiple access (MIMO-LPMA). The new method is based on the combination of user selection, zero forcing beamforming, and LPMA, and it uses N base station antennas to deliver information to N clusters of M users each. The method thus accommodates a total of N ·M users on a given time/frequency resource in a non- orthogonal fashion. The user selection algorithm ensures that all users in each cluster are sufficiently aligned with their respective transmission beam. Zero forcing beamforming controls the inter-cluster crosstalk, ensuring that beams transmitted to different clusters do not interfere to one another. LPMA encoding and decoding allows to superimpose and separate multiple messages on the same beam. Simulations show that the proposed MIMO-LPMA method outperforms the conventional approach based on non-orthogonal multiple access (MIMO-NOMA) in terms of achievable rates. In particular, our results indicate that MIMO-LPMA guarantees a significantly larger 95%-likely rate.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A New Method of MIMO-Based Non-Orthogonal Multiuser Downlink Transmission


    Contributors:


    Publication date :

    2017-06-01


    Size :

    254795 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Downlink Performance Analysis of Multicell Multiuser 3D MIMO System

    Yin, Wenran / Li, Lihua / Li, Xingwang et al. | IEEE | 2015


    Antenna-Resource-Based SCMA in Downlink Multiuser Transmission Systems

    Zhang, Yi-Peng / Yu, Qi-Yue / Liu, Zi-Jing et al. | IEEE | 2020


    MMSE-THP with QoS Requirements for the Downlink of Multiuser MIMO Systems

    Guo, Xinyang / Yang, Dewei / Wang, Hua et al. | IEEE | 2018



    User Loading in Downlink Multiuser Massive MIMO with 1-Bit DAC and Quantized Receiver

    Xu, Jindan / Xu, Wei / Shi, Fengfeng et al. | IEEE | 2017