Pareto Characterization of the Multicell MIMO Performance Region With Simple Receivers

TL;DR

This paper introduces new explicit and implicit methods to characterize the Pareto boundary of the performance region in multicell MIMO systems with simple receivers, enabling efficient resource allocation analysis.

Contribution

It provides novel explicit and implicit Pareto boundary characterizations using fewer parameters than previous methods, applicable to interference channels and ideal MIMO networks.

Findings

Explicit characterization uses fewer parameters than prior work.

Implicit characterization guarantees Pareto boundary with minimal parameters.

Methods are demonstrated on interference channels and ideal MIMO systems.

Abstract

We study the performance region of a general multicell downlink scenario with multiantenna transmitters, hardware impairments, and low-complexity receivers that treat interference as noise. The Pareto boundary of this region describes all efficient resource allocations, but is generally hard to compute. We propose a novel explicit characterization that gives Pareto optimal transmit strategies using a set of positive parameters---fewer than in prior work. We also propose an implicit characterization that requires even fewer parameters and guarantees to find the Pareto boundary for every choice of parameters, but at the expense of solving quasi-convex optimization problems. The merits of the two characterizations are illustrated for interference channels and ideal network multiple-input multiple-output (MIMO).