Performance Evaluation of LOS MIMO Systems under the Influence of Phase Noise

TL;DR

This paper evaluates the performance of line-of-sight MIMO systems at millimeter-wave frequencies under phase noise impairment and demonstrates how a simple compensation algorithm can improve system efficiency.

Contribution

It provides a system-level analysis of phase noise effects on LOS MIMO systems and introduces a practical compensation method to mitigate these effects.

Findings

Phase noise significantly degrades LOS MIMO performance.

A simple compensation algorithm can improve system robustness.

Performance gains are demonstrated across various practical phase noise levels.

Abstract

To deal with the ever increasing data rate demand in wireless systems, suitable backhaul solutions have to be found. One option is to use LOS MIMO systems at mmWave frequencies, as high bandwidths and spectral efficiencies will be able to fulfill this requirement. Several investigations have shown, that phase noise can decimate the efficiency of such systems immensely and needs to be adequately dealt with. In this work we investigate the system level performance of LOS MIMO systems subject to this impairment and examine the influence for various practical phase noise values. Furthermore, it is shown how a simple phase noise compensation algorithm can be used to enhance the performance of these systems in different scenarios.