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In this paper, we study physical layer security for the downlink of cellular networks. In a cellular network, the confidential messages transmitted to each mobile user can be eavesdropped by the other users in the same cell and also by the users in the other cells. We model the locations of base stations and mobile users as two independent two-dimensional Poisson point processes. By combining tools...
In this paper, we study the performance of regularized channel inversion (RCI) precoding in large MISO broadcast channels with confidential messages (BCC). We obtain a deterministic approximation for the achievable secrecy sum-rate which is almost surely exact as the number of transmit antennas M and the number of users K grow to infinity in a fixed ratio β=K/M. We derive the optimal regularization...
In this paper we mainly focus on the information-theoretic capacity of multiple-input multiple-output (MIMO) independent and identically distributed (i.i.d.) Rayleigh flat-fading channels assuming equal power allocation to each of the transmit antennas. We present an overview of the analytical results on MIMO channel capacity in recent years, including the statistical properties, approximate distributions...
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