Abstract
Communication in the millimeter-wave (mmWave) band has enabled giga-bit-per-second data rates for next generation wireless systems. To this end, physical layer security techniques have emerged as a simple and yet effective way to safeguard these systems against eavesdropping attacks. These techniques make use of the large antenna arrays available in mmWave systems to provide an array gain at the target receiver and obfuscate the signal at the eavesdropper. Despite their effectiveness, majority of these techniques are based on line-of-sight communication links between the transmitter and the receiver, and may fail in the presence of blockages or non-line of-sight links. In this project, we propose a new physical layer security technique to safeguard communication systems against randomly located eavesdroppers. Numerical results demonstrate the effectiveness of proposed technique and show that higher secrecy rate can be obtained when compared to recently proposed techniques.