Performance of Lattice Coset Codes on Universal Software Radio Peripherals

TL;DR

This paper experimentally evaluates how lattice coset codes can secure wireless communications against eavesdroppers in a USRP-based wiretap channel setup, analyzing the impact of eavesdropper position and randomness on confidentiality.

Contribution

It provides empirical insights into the effectiveness of lattice coset coding for physical layer security in real-world wireless environments.

Findings

Coset coding enhances confidentiality depending on eavesdropper position.

Increased randomness improves security performance.

Experimental results validate theoretical security predictions.

Abstract

We consider an experimental setup of three USRPs that implement a wiretap channel, two USRPs are the legitimate players Alice and Bob, while the third USRP is the eavesdropper, whose position we vary to evaluate information leakage. The experimented channels are close to slow fading channels, and coset coding of lattice constellations is used for transmission, allowing to introduce controlled randomness at the transmitter. Simulation and measurement results show to which extent coset coding can provide confidentiality, as a function of Eve's position, and the amount of randomness used.