基于可移动全双工接收机的隐蔽通信容量鲁棒优化  

Robust Optimization of Covert Communication Throughput Based on Removable Full-Duplex Receiver

作　　者：许睿[1] 李高磊[1] 李建华[1] XU Rui;LI Gaolei;LI Jianhua(Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学,上海200240

出　　处：《通信技术》2023年第9期1076-1081,共6页Communications Technology

基　　金：国家自然科学基金(62202303,U20B2048);国防基础科研项目(JCKY2020604B004)。

摘　　要：隐蔽通信作为当前通信安全领域的研究热点受到了学者们的广泛关注,它以保证窃听方(Willie)无法检测发射机(Alice)与接收机(Bob)间的通信行为为主要目标,以实现信息的高可靠传输。全双工接收机因其灵活的部署方式被广泛应用于隐蔽网络中,但当前少有针对位置信息对隐蔽性能影响的研究。针对此问题,研究了在Willie位置信息未知的场景下全双工接收机的功率-位置鲁棒优化策略。首先,分析了Willie位置不确定对隐蔽通信性能的影响;其次,通过鲁棒优化技术联合优化Bob的干扰功率和位置来满足系统的隐蔽约束要求,从而最大化有效隐蔽吞吐量。理论分析表明,Alice和Bob之间的有效隐蔽吞吐量同两者之间的距离成反比,且Bob的最佳位置位于靠近Alice的可部署区域边界上。As a hot research topic in the field of wireless communication security,covert communication receives a lot of attention from scholars.It aims to ensure that the eavesdropping party(Willie)cannot detect the communication behavior between the transmitter(Alice)and receiver(Bob)in order to achieve highly reliable transmission of information.Full-duplex receivers are widely used in covert networks because of their flexible deployment,but there are few studies on the impact of covert performance with respect to position information.To address this issue,this paper investigates a robust JPPO(Joint Power and Position Optimization)strategy for the full-duplex receiver(i.e.Bob)in a scenario where Willie’s position information is unknown.First,this paper analyzes the effect of Willie’s position uncertainty on the performance of covert communication.Then,it employs robust optimization techniques to jointly optimize Bob’s interference power and position in order to meet the system’s covert constraints,thus maximizing the effective covert throughput.Theoretical analysis indicates that the effective covert throughput between Alice and Bob is inversely proportional to the distance between them,and the optimal position of Bob is on the boundary of the DZ near Alice.

关 键 词：隐蔽通信 全双工接收机 鲁棒优化 不确定性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]