Physical Layer Deception with Non-Orthogonal Multiplexing

TL;DR

This paper introduces a novel physical layer deception framework that combines PLS with active deception techniques, using non-orthogonal multiplexing to proactively secure wireless communications against eavesdroppers.

Contribution

It proposes a new framework integrating deception with PLS, employing a two-stage encoder and randomized ciphering to enhance security beyond traditional methods.

Findings

Effective protection of message confidentiality even against knowledgeable eavesdroppers

Superiority of the PLD approach demonstrated through numerical benchmarks

Framework relies solely on the legitimate channel's advantage

Abstract

Physical layer security (PLS) is a promising technology to secure wireless communications by exploiting the physical properties of the wireless channel. However, the passive nature of PLS creates a significant imbalance between the effort required by eavesdroppers and legitimate users to secure data. To address this imbalance, in this article, we propose a novel framework of physical layer deception (PLD), which combines PLS with deception technologies to actively counteract wiretapping attempts. Combining a two-stage encoder with randomized ciphering and non-orthogonal multiplexing, the PLD approach enables the wireless communication system to proactively counter eavesdroppers with deceptive messages. Relying solely on the superiority of the legitimate channel over the eavesdropping channel, the PLD framework can effectively protect the confidentiality of the transmitted messages, even against eavesdroppers who possess knowledge equivalent to that of the legitimate receiver. We prove the validity of the PLD framework with in-depth analyses and demonstrate its superiority over conventional PLS approaches with comprehensive numerical benchmarks.