Non-Orthogonal Multiple Access (NOMA) is expected to enhance spectrum utilization in 5G and beyond 5G mobile communication systems. Since NOMA multiplexes signals for multiple users into one radio resource, there is an issue that the influence of nonlinear distortion caused by radio frequency circuits becomes more severe. In this paper, we propose to mitigate the effects of nonlinear distortion by a blind nonlinear compensation technique in the receiver side. The improvement effect is evaluated by Error Vector Magnitude (EVM) of the received signal. From the computer simulation results, it is confirmed that the proposed method can effectively suppress the deterioration of downlink NOMA received signal that is affected by nonlinear distortion. As a result, it is possible to apply high-level modulation such as 256QAM in NOMA under such environments.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improvement of EVM for Downlink NOMA with Blind Nonlinear Compensation Scheme


    Contributors:
    Nagai, Jun (author) / Abe, Tomoki (author) / Yamao, Yasushi (author)


    Publication date :

    2020-05-01


    Size :

    375271 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Cross-Tier Interference Management Scheme for Downlink mMIMIO-NOMA HetNet

    Nasser, Ahmed / Muta, Osamu / Elsabrouty, Maha | IEEE | 2019


    Performance Analysis of a Hybrid Downlink-Uplink Cooperative NOMA Scheme

    Wei, Zhiqiang / Dai, Linglong / Ng, Derrick Wing Kwan et al. | IEEE | 2017


    Generalized Single-RF Downlink NOMA-SM System

    Al-Ansi, Mohammed / Aljunid, Syed Alwee / Sourour, Essam et al. | IEEE | 2019


    A Downlink NOMA System Based on Combinatorial Design

    Wu, Yuteng / Attang, Edidiong / Atkin, G. E. | IEEE | 2018


    Selective Transmission Strategy for NOMA in Downlink CoMP

    Chung, Char-Dir / Ku, Chia-An | IEEE | 2019