Adaptive User Pairing for NOMA Systems With Imperfect SIC

Mouni, N. and Kumar, A. and Upadhyay, P. (2021) Adaptive User Pairing for NOMA Systems With Imperfect SIC. IEEE Wireless Communications Letters, 10 (7). pp. 1547-1551. ISSN 2162-2337

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Non-orthogonal multiple access (NOMA) has been recognized as a key driving technology for the fifth generation (5G) and beyond 5G cellular networks. For a practical downlink NOMA system with imperfect successive interference cancellation (SIC), we derive bounds on power allocation factors and formulate a minimum signal-to-interference-plus-noise ratio (SINR) difference criterion for NOMA pair formation. Through extensive simulations, we show the effect of imperfect SIC on the rate performance of a NOMA pair and the trade-off with its OMA (orthogonal multiple access) counterparts. We propose an adaptive user pairing (A-UP) algorithm for achieving better user rates. Further, the proposed A-UP algorithm results in better performance than state-of-the-art NOMA pairing algorithms in the presence of SIC imperfections.

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IITH Creators:
IITH CreatorsORCiD
Kumar, Abhinav
Item Type: Article
Uncontrolled Keywords: Cellular network, Extensive simulations, Pairing algorithms, Power allocation, Rate performance, Signal to interference plus noise ratio, State of the art, Successive interference cancellation(SIC)
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: Mrs Haseena VKKM
Date Deposited: 09 Nov 2021 05:18
Last Modified: 09 Mar 2022 10:11
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