Correction Factor for Analysis of MIMO Wireless Networks With Highly Directional Beamforming

TL;DR

This paper introduces a correction factor for simplified received power models in highly directional MIMO wireless networks, improving accuracy in coverage analysis by accounting for actual signal power variations.

Contribution

It analytically derives the correction factor for LOS and NLOS links, demonstrating its significance through simulations with realistic channel models.

Findings

The correction factor significantly improves power estimation accuracy.

Incorporating the factor affects coverage probability assessments.

Simulation results validate the analytical derivations.

Abstract

In this letter, we reconsider a popular simplified received signal power model with single stream beamforming employed by the transmitter and the receiver in the regime when the beams have high gain and narrow beamwidth. We define the correction factor as the ratio of the average actual received signal power divided by the average received signal power using the popular simplified model. We analytically quantify this factor for LOS and NLOS service and interfering links under some assumptions. The analysis along with simulations using a 3GPP compliant new radio (NR) channel model confirm the importance of incorporating the correction factor in coverage analysis of wireless networks that utilize the popular simplified received power model.