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

Hiroki Kitagawa and Eiji Okamoto

International Journal of Distributed Sensor Networks, 2017, vol. 13, issue 11, 1550147717744528

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.

Keywords: Non-orthogonal multiple access; code division multiplexing; successive interference cancelation; downlink; proportional fairness (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:sae:intdis:v:13:y:2017:i:11:p:1550147717744528

DOI: 10.1177/1550147717744528

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