Gamma Approximation Based Multi-Antenna Covert Communication Detection  

作　　者：Wan Pengwu Chen Dongrui Wang Danyang Hui Xi Peng Kang 

机构地区：[1]School of Communications and Information Engineering&School of Artificial Intelligence,Xi’an University of Posts and Telecommunications,Xi’an 710121,China [2]Key Laboratory of Integrated Service Networks,School of Telecommunications Engineering,Xidian University,Xi’an 710071,China

出　　处：《China Communications》2024年第9期90-97,共8页中国通信（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Grant No.62101441);Young Talent fund of University Association for Science and Technology in Shaanxi,China(Grant No.20210111);National Key Research and Development Program of China(Grant No.2021YFC2203503);the Fundamental Research Funds for the Central Universities(Grant No.QTZX23065);the Key Research and Development Program of Shaanxi in Industrial Domain(Grant No.2021GY-103);the National Key Laboratory Foundation 2022-JCJQ-LB-006(Grant No.6142411222203);the graduate innovation fund of Xi’an University of Posts and Electrical University(Grand No.CXJJZL2023002)。

摘　　要：Covert communication technology makes wireless communication more secure,but it also provides more opportunities for illegal users to transmit harmful information.In order to detect the illegal covert communication of the lawbreakers in real time for subsequent processing,this paper proposes a Gamma approximation-based detection method for multi-antenna covert communication systems.Specifically,the Gamma approximation property is used to calculate the miss detection rate and false alarm rate of the monitor firstly.Then the optimization problem to minimize the sum of the missed detection rate and the false alarm rate is proposed.The optimal detection threshold and the minimum error detection probability are solved according to the properties of the Lambert W function.Finally,simulation results are given to demonstrate the effectiveness of the proposed method.

关 键 词：covert communication DETECTION Gamma approximation Lambert W function multi-antenna technique 

分 类 号：TN918[电子电信—通信与信息系统]