Proactive Eavesdropping via Jamming for Rate Maximization over Rayleigh Fading Channels

TL;DR

This paper introduces a proactive jamming strategy for legitimate monitors to enhance eavesdropping efficiency on suspicious wireless links by controlling the communication rate over Rayleigh fading channels.

Contribution

It presents a novel proactive eavesdropping method using optimized jamming power control to maximize eavesdropping rate, shifting the security paradigm.

Findings

Proposed jamming approach improves eavesdropping success rate.

Optimized power control enhances average eavesdropping rate.

Effective in Rayleigh fading channel conditions.

Abstract

Instead of against eavesdropping, this letter proposes a new paradigm in wireless security by studying how a legitimate monitor (e.g., government agencies) efficiently eavesdrops a suspicious wireless communication link. The suspicious transmitter controls its communication rate over Rayleigh fading channels to maintain a target outage probability at the receiver, and the legitimate monitor can successfully eavesdrop only when its achievable rate is no smaller than the suspicious communication rate. We propose a proactive eavesdropping via jamming approach to maximize the average eavesdropping rate, where the legitimate monitor sends jamming signals with optimized power control to moderate the suspicious communication rate.