Security-Enhanced Directional Modulation Based on Two-Dimensional M-WFRFT

作     者：Zhou Zhuang Luo Junshan Wang Shilian Xia Guojiang Zhou Zhuang;Luo Junshan;Wang Shilian;Xia Guojiang

作者机构：School of Electronic ScienceNational University of Defense TechnologyChangsha 410073China Beijing Institute of Astronautical Systems EngineeringBeijing 100076China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2024年第21卷第5期

页      面：229-248页

核心收录：

学科分类：0839[工学-网络空间安全] 08[工学] 

基　　金：supported by National Natural Science Foundation of China(No.62171445) 

主　　题：bit error rate directional modulation phased array secrecy rate weighted fractional Fourier transform 

摘      要：Directional modulation(DM)is one of the most promising secure communication ***,when the eavesdropper is co-located with the legitimate receiver,the conventional DM has the disadvantages of weak anti-scanning capability,anti-deciphering capability,and low secrecy *** response to these problems,we propose a twodimensional multi-term weighted fractional Fourier transform aided DM scheme,in which the legitimate receiver and the transmitter use different transform terms and transform orders to encrypt and decrypt the confidential *** order to further lower the probability of being deciphered by an eavesdropper,we use the subblock partition method to convert the one-dimensional modulated signal vector into a twodimensional signal matrix,increasing the confusion of the useful *** results demonstrate that the proposed DM scheme not only provides stronger anti-deciphering and anti-scanning capabilities but also improves the secrecy rate performance of the system.