Non-orthogonal Multiple Access in a Downlink Multiuser Beamforming System

被引：0

作者：

Kim, Beomju ^{[1
]}

Lim, Sungmook ^{[1
]}

Kim, Hyungjong ^{[1
]}

Suh, Sangwook ^{[2
]}

Kwun, Jonghyung ^{[2
]}

Choi, Sooyong ^{[1
]}

Lee, Chungyong ^{[1
]}

Lee, Sanghoon ^{[1
]}

Hong, Daesik ^{[1
]}

机构：

[1] Yonsei Univ, Sch Elect & Elect Engn, Informat Telecommun Lab B715, 134 Shinchondong, Seoul 120749, South Korea

[2] Samsung Elect Co, Suwon, South Korea

来源：

2013 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2013) | 2013年

基金：

新加坡国家研究基金会;

关键词：

non-orthogonal multiple access; multiuser beamforming; user clustering; MIMO BROADCAST CHANNELS; FEEDBACK;

D O I：

暂无

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 paper, we propose a non-orthogonal multiple access-based multiuser beamforming (NOMA-BF) system designed to enhance the sum capacity. In the proposed NOMABF system, a single BF vector is shared by two users, so that the number of supportable users can be increased. However, sharing a BF vector leads to interference from other beams as well as from the other user sharing the BF vector. Therefore, to reduce interference and improve the sum capacity, we additionally propose a clustering and power allocation algorithm. This clustering algorithm, which selects two users with high correlation and a large gain-difference between their channels, can reduce the interference from other beams and from the other user as well. Furthermore, power allocation ensures that each user's transmit power is allocated so as to maximize the sum capacity. Numerical results verify that the proposed NOMA-BF system improves the

引用

页码：1278 / 1283

页数：6

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