On the Sum Rate of MIMO-NOMA and MIMO-OMA Systems

被引：121
|
作者：
Zeng, Ming [1 ]
Yadav, Animesh [1 ]
Dobre, Octavia A. [1 ]
Tsiropoulos, Georgios I. [2 ]
Poor, H. Vincent [3 ]
机构：
[1] Mem Univ, St John, NF A1B 3X9, Canada
[2] Natl Tech Univ Athens, Athens 10682, Greece
[3] Princeton Univ, Princeton, NJ 08544 USA
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2017年 / 6卷 / 04期
基金：
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词：
Non-orthogonal multiple access (NOMA); multiple-input multiple-output (MIMO); channel capacity; sum rate; user pairing; 5G systems;
D O I：
10.1109/LWC.2017.2712149
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this letter, the performance of non-orthogonal multiple access (NOMA) is compared with conventional orthogonal multiple access (OMA) over multiple-input multiple-output (MIMO) channels. It is proved analytically that for a simple scenario of two users, MIMO-NOMA dominates MIMO-OMA in terms of both sum rate and ergodic sum rate. Furthermore, for a more practical scenario of multiple users, with two users paired into a cluster and sharing a common transmit beamforming vector, the conclusion still holds. Numerical simulations are conducted, which corroborate the analytical findings.
引用
收藏
页码：534 / 537
页数：4
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