Linear Precoding for Broadcast Channels with Confidential Messages under Transmit-Side Channel Correlation

Autor:	Geraci, Giovanni, Al-nahari, Azzam Y., Yuan, Jinhong, Collings, Iain B.
Rok vydání:	2013
Předmět:	Computer Science - Information Theory
Druh dokumentu:	Working Paper
DOI:	10.1109/LCOMM.2013.050313.130353
Popis:	In this paper, we analyze the performance of regularized channel inversion (RCI) precoding in multiple-input single-output (MISO) broadcast channels with confidential messages under transmit-side channel correlation. We derive a deterministic equivalent for the achievable per-user secrecy rate which is almost surely exact as the number of transmit antennas and the number of users grow to infinity in a fixed ratio, and we determine the optimal regularization parameter that maximizes the secrecy rate. Furthermore, we obtain deterministic equivalents for the secrecy rates achievable by: (i) zero forcing precoding and (ii) single user beamforming. The accuracy of our analysis is validated by simulations of finite-size systems. Comment: to appear IEEE Communications Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1304.6157 Zobrazit plný text záznamu View this record from Arxiv