A Layered Lattice Coding Scheme for a Class of Three User Gaussian Interference Channels

TL;DR

This paper introduces a layered lattice coding scheme for three-user Gaussian interference channels, enabling interference alignment and achieving higher degrees of freedom and rates than traditional methods.

Contribution

The paper proposes a novel layered lattice coding scheme that improves interference management and rate performance in three-user Gaussian interference channels.

Findings

Achieves more than one degree of freedom in certain interference channels.

Outperforms Han-Kobayashi coding scheme in rate performance.

Enables interference alignment using lattice codes.

Abstract

The paper studies a class of three user Gaussian interference channels. A new layered lattice coding scheme is introduced as a transmission strategy. The use of lattice codes allows for an "alignment" of the interference observed at each receiver. The layered lattice coding is shown to achieve more than one degree of freedom for a class of interference channels and also achieves rates which are better than the rates obtained using the Han-Kobayashi coding scheme.