Optimal User Pairing for Achieving Rate Fairness in Downlink NOMA Networks

Bui, V.-P.; Nguyen, P.X.; Nguyen, H.V.; Nguyen, V.-D.; Shin, O.-S.

doi:10.1109/ICAIIC.2019.8669061

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Optimal User Pairing for Achieving Rate Fairness in Downlink NOMA Networks

Bui, V.-P.;
Nguyen, P.X.;
Nguyen, H.V.;
Nguyen, V.-D.;
Shin, O.-S.

Citations

SCOPUS

25

초록

In this paper, a downlink non-orthogonal multiple access (NOMA) network is studied. We investigate the problem of jointly optimizing user pairing and beam-forming design to maximize the minimum rate among all users. The considered problem belongs to a difficult class of mixed-integer nonconvex optimization programming. We first relax the binary constraints and adopt sequential convex approximation method to solve the relaxed problem, which is guaranteed to converge at least to a locally optimal solution. Numerical results show that the proposed method attains higher rate fairness among users, compared with traditional beamforming solutions, i.e., random pairing NOMA and beamforming systems. © 2019 IEEE.

키워드

Beamforming; convex optimization; nonorthogonal multiple access (NOMA); Beamforming; Convex optimization; Integer programming; Numerical methods; Binary constraints; Convex approximation methods; Multiple access; Non-orthogonal; Nonconvex optimization; Numerical results; Optimal solutions; Relaxed problem; Problem solving

제목: Optimal User Pairing for Achieving Rate Fairness in Downlink NOMA Networks

저자: Bui, V.-P.; Nguyen, P.X.; Nguyen, H.V.; Nguyen, V.-D.; Shin, O.-S.

DOI: 10.1109/ICAIIC.2019.8669061

발행일: 2019-03

유형: Conference Paper

저널명: 1st International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2019

페이지: 575 ~ 578

언어: ENG

출판사: Institute of Electrical and Electronics Engineers Inc.

발행국가: 미국

분량: 4 페이지

ISSN: P 0000-0000