Evaluation of Physical Layer Secrecy in MIMO Ultra-Wideband System using Time-Reversal Techniques

Physical layer secrecy in wireless communication is a new approach of information security and has emerged into a fascinating topic attracting lots of research. Ultra-WideBand (UWB) technology in conjunction with Time-Reversal (TR) is used to improve the speed of transmission and reduce the cost and complexity for the receiver. This paper focuses on the evaluation of physical layer secrecy in Multi-Input Multi-Output (MIMO) UWB system with TR and compares to the system without using TR technique to clarify the advantages of this technique. Simulation results show that the secrecy capacity of UWB system is significantly improved when applying TR technique.