The broadcast nature of wireless communication systems makes wireless transmission extremely susceptible to eavesdropping and even malicious interference. Physical layer security technology can effectively protect the private information sent by the transmitter from being listened to by illegal eavesdroppers, thus ensuring the privacy and security of communication between the transmitter and legitimate users. The development of mobile communication presents new challenges to physical layer security research. This paper provides a comprehensive survey of the physical layer security research on various promising mobile technologies, including directional modulation (DM), spatial modulation (SM), covert communication, intelligent reflecting surface (IRS)-aided communication, and so on. Finally, future trends and the unresolved technical challenges are summarized in physical layer security for mobile communications.
翻译:无线通信系统的广播性质使得无线传输极易受到窃听甚至恶意干扰的伤害。有形层安全技术能够有效保护发射机发送的私人信息不被非法窃听者监听,从而确保发射机与合法用户之间的隐私和通信安全。移动通信的发展给物理层安全研究带来了新的挑战。本文件对各种有前途的移动技术的物理层安全研究进行了全面调查,包括定向调制、空间调制、隐蔽通信、智能反射地面通信等等。最后,移动通信的物理层安全总结了未来趋势和尚未解决的技术挑战。