Abstract-In this paper, we study the problem of physical layer security in a large-scale multiple-input multiple-output (LS-MIMO) relaying system. The advantage of LS-MIMO relaying systems is exploited to enhance both wireless security and spectral efficiency. In particular, the challenging issue incurred by short interception distance is well addressed. Under very practical assumptions, i.e., no eavesdropper's channel state information (CSI) and imperfect legitimate channel CSI, this paper gives a thorough investigation of the impact of imperfect CSI in two classic relaying systems, i.e., amplify-and-forward (AF) and decode-and-forward (DF) systems, and obtain explicit expressions of secrecy outage capacities for both cases. Finally, our theoretical claims are validated by the numerical results.
In REF , we analyzed the secrecy performance of large-scale MIMO relay in two-hop secure communications with imperfect CSI, and derived closed-form expressions of secrecy outage capacity for amplify-and-forward (AF) and decode-and-forward (DF) relaying protocols, respectively.
On the secrecy outage capacity of physical layer security in large-scale MIMO relaying systems with imperfect CSI
2014 IEEE International Conference on Communications (ICC)
2014 IEEE International Conference on Communications (ICC)
Mathematics Computer Science