Secure Beamforming in Downlink MISO Nonorthogonal Multiple Access Systems

Impact Factor:6.239

DOI number:10.1109/TVT.2017.2658563

Journal:IEEE Trans. Veh. Technol.

Key Words:2019年3月–6月入选ESI高被引，广东工业大学TOP期刊

Abstract:In this paper, we consider a cellular downlink multiple-input-single-output (MISO) nonorthogonal multiple access (NOMA) secure transmission system, where users are grouped as multiple clusters. Each cluster consists of a central user and a cell-edge user. The central user is an entrusted user, and the cell-edge user is a potential eavesdropper. We focus on the secure beamforming and power allocation design optimization problem which maximizes the sum achievable secrecy rate of central users subject to the transmit power constraint at the base station and transmission rate requirements at cell-edge users. The problem is nonconvex because of coupling optimization variables in the considered fractional quadratically constrained quadratic programming. We propose an alternating optimization-based solution and a constrained concave-convex procedure-based solution to the considered problem. Simulation results demonstrate that our proposed NOMA schemes outperform the conventional orthogonal multiple access scheme.

Note:2019年3月–6月入选ESI高被引，广东工业大学TOP期刊

Co-author:jmiao,李全忠,秦家银

First Author:Li Yiqing

Indexed by:Journal paper

Correspondence Author:张旗

Discipline:Engineering

First-Level Discipline:Information and Communication Engineering

Document Type:J

Volume:66

Issue:8

Page Number:7563–7567

ISSN No.:1939-9359

Translation or Not:no

Date of Publication:2017-08-01

Included Journals:SCI

Links to published journals:https://ieeexplore.ieee.org/document/7833022