Joint maximum likelihood detection in far user of non-orthogonal multiple access

Kenji Ando, Yukitoshi Sanada, Saba Takahiko

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    Non-orthogonal multiple access (NOMA) enables multi- ple mobile devices to share the same frequency band. In a conventional NOMA scheme, the receiver of a far user detects its desired signal without canceling the signal for a near user. However, the signal for the near user acts as interference and degrades the accuracy of likelihood values for the far user. In this paper, a joint maximum likelihood detection scheme for the far user of the NOMA downlink is proposed. The proposed scheme takes the interference signal into account in calculating the likelihood val- ues. Numerical results obtained through computer simulation show that the proposed scheme improves the performance by from 0.2 dB to 3.1 dB for power allocation coefficients of 0.2 to 0.4 at a bit error rate (BER) of 10-2 relative to the conventional scheme.

    Original languageEnglish
    Pages (from-to)177-186
    Number of pages10
    JournalIEICE Transactions on Communications
    VolumeE100B
    Issue number1
    DOIs
    Publication statusPublished - 2017 Jan 1

    Keywords

    • Joint maximum likelihood detection
    • Non-orthogonal multiple access
    • Successive interference cancellation

    ASJC Scopus subject areas

    • Software
    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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