面向抗干扰通信的智能反射面被动波束赋形设计  

Passive Beamforming Design of IRS for Anti-Jamming Communication

作　　者：秦思娜 何松涛 辜怡然 李天晨 王萌 QIN Sina;HE Songtao;GU Yiran;LI Tianchen;WANG Meng(PLA Army Engineering University,Nanjing Jiangsu 210007,China)

机构地区：[1]中国人民解放军陆军工程大学,江苏南京210007

出　　处：《通信技术》2023年第6期703-707,共5页Communications Technology

基　　金：国家自然科学基金(62171461)。

摘　　要：在激烈对抗的战场环境中,传统抗干扰方案(如跳频、扩频等)面临敌方大功率、宽频段干扰压制时显得难以为继。故提出利用智能反射面为我方发送信号和敌方干扰信号构建可控的反射链路,使经由其反射的信号与直传信号进行同相叠加或反相抵消,从而实现信号增强和干扰抑制,克服传统抗干扰方案的不足。具体而言,是以最大化接收机信干噪比为目标,对基于信号增强和干扰抑制的智能反射面被动波束赋形进行了联合设计。仿真结果表明,所提方案能够有效提升系统在强干扰条件下的接收性能。In the fierce confrontation battlefield environment,the conventional anti-jamming schemes(such as frequency hopping,spread spectrum,etc.)are difficult to sustain in the face of enemy’s high-power and wide-band jamming suppression.Therefore,this paper proposes the use of intelligent reflecting surface to build a controllable reflection link between our transmitted signals and enemy’s jamming signals,so that the signals reflected by them and the signals transmitted directly are superimposed in the same phase or offset in the opposite phase,thus realizing signal enhancement and jamming suppression,and overcoming the shortcomings of the conventional anti-jamming schemes.Specifically,a joint design of IRS passive beamforming based on signal enhancement and jamming suppression is carried out to maximize the signal to noise ratio of the receiver.Simulation results indicate that the proposed scheme can effectively improve the receiving performance of the system under strong jamming conditions.

关 键 词：抗干扰 智能反射面 被动波束赋形 无线通信系统 

分 类 号：TN97[电子电信—信号与信息处理]