Linear precoding for broadcast channels with confidential messages under transmit-side channel correlation

Giovanni Geraci, Azzam Y. Al-Nahari, Jinhong Yuan, Iain B. Collings

Research output: Contribution to journalArticle

23 Citations (Scopus)

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 deterministic equivalent of 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.

Original languageEnglish
Article number6515483
Pages (from-to)1164-1167
Number of pages4
JournalIEEE Communications Letters
Volume17
Issue number6
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • broadcast channel
  • channel correlation
  • linear precoding
  • Physical layer security
  • random matrix theory

Fingerprint Dive into the research topics of 'Linear precoding for broadcast channels with confidential messages under transmit-side channel correlation'. Together they form a unique fingerprint.

Cite this