Candidate
Hong Wen
Title
Physical Layer Enhanced Security for the Five Generation Wireless Communications System
Supervisor
Pin-Han Ho
Abstract
Along with the rapid development of wideband wireless communication networks, wireless security has become a critical concern. Traditionally, the issue of security is viewed as a whole independent feature addressed above the physical layer and cryptographic protocols are widely used to guarantee the security of the network. However, this assumption is usually impractical in the case of wireless communication. Compared with wireline networks, wireless networks lack a physical boundary due to the broadcasting nature of wireless transmissions. Any receivers nearby can hear the transmissions, and can potentially listen/analyze the transmitted signals, or conduct jamming. This unique physical-layer weakness has motivated innovative physical-layer security designs in addition to, and integrated with, the traditional data encryption approaches. This talk gives the natural security drawback of the wireless communications and the new security challenges that 5G wireless communication system faced. Then a review about the research background of PHY security and the information-theoretic secrecy are presented. Based on the rich channel resources and key PHY technology that will be developed in 5G wireless communication system, a security framework for 5G is presented. Hong will provide the future research about the confidentiality for wireless communications systems by channel identification. After introducing a practical approach to build unconditional confidentiality for wireless communication security by beamforming and feedback, a PHY enhanced authentication approach will be presented. Finally, an application of the novel enhanced security approach in the edge computing is presented.