Smart Grid and Innovative Frontiers in Telecommunications. Third International Conference, SmartGIFT 2018, Auckland, New Zealand, April 23-24, 2018, Proceedings

Research Article

Non-orthogonal Multiple Access for Similar Channel Conditions

  • @INPROCEEDINGS{10.1007/978-3-319-94965-9_19,
        author={Asim Anwar and Boon-Chong Seet and Xue Li},
        title={Non-orthogonal Multiple Access for Similar Channel Conditions},
        proceedings={Smart Grid and Innovative Frontiers in Telecommunications. Third International Conference, SmartGIFT 2018, Auckland, New Zealand, April 23-24, 2018, Proceedings},
        proceedings_a={SMARTGIFT},
        year={2018},
        month={7},
        keywords={Non-orthogonal multiple access Channel gain stretching Power allocation},
        doi={10.1007/978-3-319-94965-9_19}
    }
    
  • Asim Anwar
    Boon-Chong Seet
    Xue Li
    Year: 2018
    Non-orthogonal Multiple Access for Similar Channel Conditions
    SMARTGIFT
    Springer
    DOI: 10.1007/978-3-319-94965-9_19
Asim Anwar1,*, Boon-Chong Seet1,*, Xue Li1,*
  • 1: Auckland University of Technology
*Contact email: aanwar@aut.ac.nz, bseet@aut.ac.nz, xuejun.li@aut.ac.nz

Abstract

Non-orthogonal multiple access (NOMA) is considered as promising multiple access (MA) scheme for upcoming fifth generation (5G) systems. The performance of NOMA is highly dependent upon having significant channel gain difference among users. In this paper, we focus on the situation of similar channel conditions and propose a channel gain stretching (CGS) strategy to apply NOMA more effectively under these conditions. In order to evaluate the performance, we derive a closed-form expression of the outage probability. Numerical results are also presented to validate the accuracy of the derived results and also to compare the performance of NOMA with and without CGS, and orthogonal MA (OMA).