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arXiv · 1304.6157

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

Giovanni Geraci·Azzam Y. Al-nahari·Jinhong Yuan·Iain B. Collings
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Abstract

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.

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Giovanni Geraci, Azzam Y. Al-nahari, Jinhong Yuan, Iain B. Collings. 2013-04-23. Linear Precoding for Broadcast Channels with Confidential Messages under Transmit-Side Channel Correlation. https://doi.org/10.1109/lcomm.2013.050313.130353

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