Precoding for Non-orthogonal Multiple Access with User Equipment Pairing

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Abstract

Due to the tremendous throughput requirement, current spectrum allocation scheme of 4G long term evolution-advanced system can’t satisfy the need for future communications applications. Hence, researches have proposed a non-orthogonal multiple access (NOMA) technique as a candidate for 5G access system recently. This paper proposes two precoding matrix selection methods for the NOMA system and also provides an appropriate user equipment (UE) pairing method for NOMA. Combining the UE pairing with the proposed precoding selection method, results show that system capacity for NOMA system can be further improved.

Keywords

NOMA MIMO system Precoding matrix UE pairing 

Notes

Acknowledgements

Funding was provided by Ministry of Science and Technology, Taiwan (Grant No.: 105-2119-M-019-006-).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Communications, Navigation and Control Engineering, Room 912National Taiwan Ocean UniversityKeelungTaiwan, ROC

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