Safeguarding MmWave Systems Using Full-Duplex Jamming Receiver

Abstract

The full-duplex millimeter-wave communication has drawn significant attention for its rich spectrum resources and high spectrum efficiency characteristics. However, due to the information leakage during transmission, secure threats in the full-duplex systems still exist. In this paper, we propose a full-duplex jamming based secure transmission scheme, where the instantaneous channel state information of eavesdropping channel is unknown. We study the optimal design of hybrid beamforming and power allocation jointly with secrecy outage probability constraint. Our results reveal that joint optimization highly facilitates the secrecy performance of full-duplex mmWave communication, without any self-interference limitations in the multiple-antenna scenarios.