Physical layer security

The issues of privacy and security in wireless networks play an important role as these networks have become part of people’s life in some forms or other and greatly influence different activities of governments, industries, businesses and etc.

The existing conventional cryptographic techniques based on computational complexity of some mathematical problems cannot be directly applied to the emerging distributed large-scale networks with limited capability devices, for example Internet of Things (IoT), which introduce new security challenges in terms of key distributions and managements.

Motivated by these great challenges in these networks, physical layer security has been recently recognised as a promising new design paradigm shift to provide security in emerging wireless network including in 5G which exploits the characteristics of physical layer dynamics of fading channels to enhance security of wireless links.

Our research activities involve the development of low complexity and cost effective physical layer security techniques, such as wireless transmission techniques and secret key generation schemes based on different mathematical approaches including convex optimization and game theory.

Projects

ATOM

Physical layer security for NOMA (Faezeh Alavi)

Secure wireless energy harvesting (Miao Zhang)