Secure transmission based on cooperative jamming relay in heterogeneous massive MIMO system

Abstract

Security is an important concern in wireless networks. In this paper, we study secure transmission in heterogeneous massive MIMO systems. Base station (BS) with large-scale antenna transmits signal to mobile terminals through low power nodes (LPNs) in the presence of passive multi-antenna eavesdroppers. We consider the secure downlink transmission based on cooperative jamming relay. Meanwhile we employ artificial noise to enhance the security. Our simulation results reveal in heterogeneous massive MIMO systems with Jammer and AN, the SNR of MT is higher than Eve, the obtained positive secrecy capacity prove this scheme can guarantee the secure transmission.