Max-Min Fair Precoder Design and Power Allocation for MU-MIMO NOMA

被引：7

作者：

Yalcin, Ahmet Zahid ^{[1
]}

Cetin, Mustafa Kagan ^{[1
]}

Yuksel, Melda ^{[1
]}

机构：

[1] TOBB Univ Econ & Technol, TR-06560 Ankara, Turkey

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2021年 / 70卷 / 06期

关键词：

NOMA; Optimization; Base stations; Receivers; Downlink; Resource management; Complexity theory; Max-min fairness; mean square error; MIMO; MMSE; precoder design; rate splitting; SDR; SCA;

D O I：

10.1109/TVT.2021.3077504

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this correspondence, transmit precoders and their power allocation coefficients are designed jointly for a downlink non-orthogonal multiple access (NOMA) wireless communication system. The objective is to provide max-min fairness (MMF) among the strongest users in each group, while maintaining minimum target rates for all the other users. The proposed solutions are respectively based on semi-definite relaxation (SDR) and successive convex approximation (SCA) and on the minimum mean square error (MMSE) approaches. For the latter approach, a simplification is also suggested to lower complexity. It is shown that while rate-splitting (RS) has the best MMF rates, the low-complexity MMSE approach has the least complexity. Moreover, the SDR/SCA approach offers an excellent tradeoff between the two.

引用

页码：6217 / 6221

页数：5

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