Secrecy of Multi-Antenna Transmission with Full-Duplex User in the Presence of Randomly Located Eavesdroppers

TL;DR

This paper analyzes the secrecy performance of various multi-antenna transmission schemes with full-duplex users against randomly located eavesdroppers, deriving closed-form expressions for secrecy outage probabilities to aid network design.

Contribution

It provides the first comprehensive analysis of multiple secrecy schemes with full-duplex users and randomly distributed eavesdroppers, including closed-form SOP expressions.

Findings

Closed-form SOP expressions for all schemes

Impact of environmental parameters on secrecy performance

Guidelines for network design based on SOP analysis

Abstract

This paper considers the secrecy performance of several schemes for multi-antenna transmission to single-antenna users with full-duplex (FD) capability against randomly distributed single-antenna eavesdroppers (EDs). These schemes and related scenarios include transmit antenna selection (TAS), transmit antenna beamforming (TAB), artificial noise (AN) from the transmitter, user selection based their distances to the transmitter, and colluding and non-colluding EDs. The locations of randomly distributed EDs and users are assumed to be distributed as Poisson Point Process (PPP). We derive closed form expressions for the secrecy outage probabilities (SOP) of all these schemes and scenarios. The derived expressions are useful to reveal the impacts of various environmental parameters and user's choices on the SOP, and hence useful for network design purposes. Examples of such numerical results are discussed.