Novel Physical Layer Security using Adaptive Modulation

What is it about?

Establishing secured communication among the intended users of wireless networks is a major concern. Especially, providing confidentiality is a critical requirement in a wireless communication system which is more susceptible to eavesdroppers. Prevailing cryptographic methods were proven to meet the security needs to some extent. Sophisticated encryption techniques cannot be always deployed in wireless devices, where the resources are limited. However, physical layer security is recently emerging into a promising paradigm to aid security in wireless networks by exploiting the dynamics of wireless channel. In this work, a physical layer security technique was proposed to enhance confidentiality which selects the modulation type adaptively, based on both channel signal-to-noise ratio and phase between transmitter and receiver.

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Photo by Hédi Benyounes on Unsplash

Photo by Hédi Benyounes on Unsplash

Why is it important?

The proposed scheme improves confidentiality and throughput while maintaining the targeted symbol error rate.