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Performance improvement of non-orthogonal multiple access scheme using code division multiplexing

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  • Hiroki Kitagawa
  • Eiji Okamoto

Abstract

Currently, the standardization of fifth-generation mobile communication system (5G), which realizes 10 Gbps transmission, is in progress. In mobile communications, it is generally difficult to perform high-capacity transmission because of channel fading. Therefore, an adaptive resource allocation scheme based on users’ channel conditions is adopted to enhance the system capacity. Recently, it has been shown that a non-orthogonal multiple access scheme can achieve a higher system capacity than orthogonal multiple access scheme. However, anticipating a continuous increase in mobile traffic, it is desired to further enhance the throughput of non-orthogonal multiple access scheme. Therefore, we propose an application of code division multiplexing to non-orthogonal multiple access scheme using successive interference canceler to improve the throughput performance. The improved performance is demonstrated through numerical simulations.

Suggested Citation

  • Hiroki Kitagawa & Eiji Okamoto, 2017. "Performance improvement of non-orthogonal multiple access scheme using code division multiplexing," International Journal of Distributed Sensor Networks, , vol. 13(11), pages 15501477177, November.
    • Handle: RePEc:sae:intdis:v:13:y:2017:i:11:p:1550147717744528
    DOI: 10.1177/1550147717744528
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