Outage Analysis and Beamwidth Optimization for Positioning-Assisted Beamforming

TL;DR

This paper analyzes outage probability in positioning-assisted beamforming, deriving bounds considering errors and optimizing beamwidth to improve reliability in large antenna systems.

Contribution

It provides the first closed-form outage probability bounds for positioning-assisted beamforming and demonstrates beamwidth optimization to reduce outages.

Findings

Optimized beamwidth significantly reduces outage probability.

Analytical bounds account for positioning error and link distance.

Beamwidth optimization depends on link distance and transmit power.

Abstract

Conventional beamforming is based on channel estimation, which can be computationally intensive and inaccurate when the antenna array is large. In this work, we study the outage probability of positioning-assisted beamforming systems. Closed-form outage probability bounds are derived by considering positioning error, link distance and beamwidth. Based on the analytical result, we show that the beamwidth should be optimized with respect to the link distance and the transmit power, and such optimization significantly suppresses the outage probability.