Stable Throughput Region of the Two-User Interference Channel

TL;DR

This paper characterizes the stable throughput region of a two-user interference channel, analyzing different receiver strategies, antenna effects, and random access impacts to understand optimal communication stability.

Contribution

It provides a comprehensive stability region characterization for the two-user interference channel, including various receiver strategies and system configurations.

Findings

Stability region characterized for general interference channel.

Treating interference as noise and successive interference cancellation analyzed.

Impact of multiple antennas and random access on stability region discussed.

Abstract

We consider the two-user interference channel where two independent pairs communicate concurrently and investigate its stable throughput region. First, the stability region is characterized for the general case, i.e., without any specific consideration on the transmission and reception structures. Second, we explore two different interference harnessing strategies at the receiver: treating interference as noise and successive interference cancellation. Furthermore, we provide conditions for the convexity of the stability region and for which a certain receiver strategy leads to broader stability region. The impact of multiple transmit antennas on the stability region is briefly discussed. Finally, we study the effect of random access on the stability region of the two-user interference channel.