Physical Layer Security Techniques for Future Wireless Networks

TL;DR

This paper surveys physical layer security techniques tailored for future wireless networks, focusing on mobile technologies like directional modulation, spatial modulation, covert communication, and IRS, highlighting challenges and future trends.

Contribution

It provides a comprehensive overview of recent physical layer security methods for emerging mobile wireless technologies and discusses future research directions.

Findings

Directional modulation enhances security against eavesdropping.

IRS aids in improving physical layer security.

Future challenges include dynamic channel conditions and practical implementation issues.

Abstract

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.