影响因子：3.201

DOI码：10.1109/LSP.2017.2762321

发表刊物：IEEE Signal Processing Letters

摘要：In this letter, we consider a cellular downlink multiple-input-multiple-output nonorthogonal multiple access (NOMA) secure transmission network, which consists of a base station, a central user, and a cell-edge user. The base station and two users are all equipped with multiple antennas. The central user is an entrusted user and the cell-edge user is a potential eavesdropper. We focus on secure beamforming optimization problem, which maximizes achievable secrecy rate of the central user subject to transmit power constraint at the base station and transmission rate requirement at the cell-edge user. The optimization problem is nonconvex. We employ majorization-minimization method to iteratively optimize a sequence of valid surrogate functions for the nonconvex optimization problem. Furthermore, in each iteration, we derive the semi-closed form solution to optimize the valid surrogate functions. Simulation results demonstrate that our proposed NOMA scheme outperforms the zero-forcing-based NOMA scheme and conventional orthogonal multiple access scheme.

合写作者：李亦卿,李全忠,秦家银

第一作者：姜淼

论文类型：期刊论文

通讯作者：张旗

学科门类：工学

一级学科：信息与通信工程

文献类型：J

卷号：24

期号：12

页面范围：1852—1856

ISSN号：1558-2361

是否译文：否

发表时间：2017-12-01

收录刊物：SCI

发布期刊链接：https://ieeexplore.ieee.org/document/8066389