An Achievable Rate Region for Three-Pair Interference Channels with Noise

TL;DR

This paper proposes an achievable rate region for noisy three-pair interference channels, extending deterministic models to include arbitrary noise and encompassing Gaussian channels, improving understanding of interference management.

Contribution

It introduces a new achievable rate region for noisy three-user interference channels that generalizes previous deterministic and Gaussian models.

Findings

Includes the best-known inner bound on 3-DIC capacity

Dominates treating interference as noise

Subsumes Han-Kobayashi region for two-pair case

Abstract

An achievable rate region for certain noisy three-user-pair interference channels is proposed. The channel class under consideration generalizes the three-pair deterministic interference channel (3-DIC) in the same way as the Telatar-Tse noisy two-pair interference channel generalizes the El Gamal-Costa injective channel. Specifically, arbitrary noise is introduced that acts on the combined interference signal before it affects the desired signal. This class of channels includes the Gaussian case. The rate region includes the best-known inner bound on the 3-DIC capacity region, dominates treating interference as noise, and subsumes the Han-Kobayashi region for the two-pair case.