Signal-level Honeypot: A Covert Communication and Interference Collection System

Honeypot is originally a network trap that can attract hostile attackers and collect their attack behaviors to protect the real cyber systems and resources. Signal-level honeypot is a covert communication system with signal-level trap, which utilizes the basic idea of traditional honeypot and transform domain communication technology to attract and confront hostile interferences for reliable communication and interferences recording. In the transmitter, actual modulated signal is hidden underneath a well-camouflaged “target” signal. The actual modulated signal is designed to be noise-like, low power spectrum density, and orthogonal with the “target” signal to engage covert communication. In the receiver, a band-pass transform domain filter is used to separate signals to demodulate the actual modulated signal and collect the interferences. The proposed system can supply a high reliable communication approach with an “active” passive defense mode.