Secure beamforming designs for maximizing secrecy sum rate in MISO-NOMA networks  

作　　者：Yanbo Zhang Zheng Yang Jingjing Cui Xianfu Lei Yi Wu Jun Zhang Chao Fang Zhiguo Ding 

机构地区：[1]College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou 350007,China [2]School of Electronics and Computer Science,University of Southampton,Southampton SO171BJ,UK [3]Institute of Mobile Communications,Southwest Jiaotong University,Chengdu 610031,China [4]Jiangsu Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China [5]Faculty of Information Technology,Beijing University of Technology,Beijing,China [6]School of Electrical and Electronics Engineering,The University of Manchester,Manchester M139PL,UK

出　　处：《Digital Communications and Networks》2025年第1期83-91,共9页数字通信与网络(英文版)

基　　金：supported in part by the Natural Science Foundation of Fujian Province under Grant 2022J01169;the Local Science and Technology Development of Fujian Province under Grant 2021L3010;the Key Project of Science and Technology Innovation of Fujian Province under Grant 2021G02006;the National Natural Science Foundation of China under Grants 61971360 and 62271420;the National Natural Science Foundation of China under Grant 62071247;the Urban Carbon Neutral Science and Technology Innovation Fund Project of Beijing University of Technology ($040000514122607$)。

摘　　要：In this paper,the application of Non-Orthogonal Multiple Access(NOMA)is investigated in a multiple-input single-output network consisting of multiple legitimate users and a potential eavesdropper.To support secure transmissions from legitimate users,two NOMA Secrecy Sum Rate Transmit Beam Forming(NOMA-SSR-TBF)schemes are proposed to maximise the SSR of a Base Station(BS)with sufficient and insufficient transmit power.For BS with sufficient transmit power,an artificial jamming beamforming design scheme is proposed to disrupt the potential eavesdropping without impacting the legitimate transmissions.In addition,for BS with insufficient transmit power,a modified successive interference cancellation decoding sequence is used to reduce the impact of artificial jamming on legitimate transmissions.More specifically,iterative algorithm for the successive convex approximation are provided to jointly optimise the vectors of transmit beamforming and artificial jamming.Experimental results demonstrate that the proposed NOMA-SSR-TBF schemes outperforms the existing works,such as the maximized artificial jamming power scheme,the maximized artificial jamming power scheme with artificial jamming beamforming design and maximized secrecy sum rate scheme without artificial jamming beamforming design.

关 键 词：NOMA Secure transmission Artificial jamming Beamforming design 

分 类 号：TN9[电子电信—信息与通信工程]