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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Abstract

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 Creators	ORCiD
Kumar, Abhinav	https://orcid.org/0000-0002-5880-4023

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

URI:

http://raiithold.iith.ac.in/id/eprint/8897