Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems

被引：268

作者：

Choi, Jinho ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol GIST, Sch Informat & Commun, Kwangju 500712, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2014年 / 18卷 / 02期

关键词：

Coordinated multipoint (CoMP); superposition coding; interference cancellation; FADING CORRELATION; WIRELESS; CAPACITY;

D O I：

10.1109/LCOMM.2013.123113.132450

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In order to improve the spectral efficiency, non-orthogonal multiple access (NOMA) with superposition coding is employed in a coordinated system where downlink signals to users near to base stations (BSs) and cell-edge users are transmitted simultaneously. To support a cell-edge user in a NOMA channel, two coordinated BSs use Alamouti code. In order to see the performance, we derive expressions for the transmission rates to near and cell-edge users. It is shown that the proposed coordinated superposition coding (CSC) scheme can provide a reasonable transmission rate to a cell-edge user without degrading the rates to users near to BSs.

引用

页码：313 / 316

页数：4

共 12 条

[1] A simple transmit diversity technique for wireless communications [J].