Physical Layer Deception in OFDM Systems

TL;DR

This paper introduces a physical layer deception framework using OFDM to mislead eavesdroppers, maintaining security levels comparable to traditional methods while adding deception capabilities effective even against well-informed adversaries.

Contribution

The paper presents a novel physical layer deception method that combines random ciphering with OFDM, enhancing security by deceiving eavesdroppers with falsified information.

Findings

The proposed PLD framework effectively deceives eavesdroppers with the same channel knowledge as legitimate users.

Theoretical analysis confirms the security advantages of PLD over conventional PLS methods.

Numerical simulations demonstrate the robustness of PLD in various scenarios.

Abstract

As a promising technology, physical layer security (PLS) enhances security by leveraging the physical characteristics of communication channels. However, it commonly takes the legitimate user more effort to secure its data, compared to that required by the eavesdropper to intercept the communication. To address this imbalance, we propose a physical layer deception (PLD) framework, which applies random deceptive ciphering combined with orthogonal frequency-division multiplexing (OFDM) to deceive eavesdroppers with falsified information, preventing them from wiretapping. While ensuring the same level of confidentiality as traditional PLS methods, the PLD approach additionally introduces a deception mechanism, which remains effective even when the eavesdropper has the same knowledge about the transmitter as the legitimate receiver. Through detailed theoretical analysis and numerical simulations, we prove the superiority of our method over the conventional PLS approach.