Ultra-Wideband Double-Directional Channel Measurements and Statistical Modeling in Urban Microcellular Environments for the Upper-Midband/FR3

TL;DR

This paper presents the first ultra-wideband double-directional channel measurements in the 6-14 GHz range for urban microcell environments, providing essential data and statistical models for next-generation wireless network development.

Contribution

It offers the first comprehensive UWB double-directional measurement campaign in FR3, analyzing over 25,000 profiles and developing statistical models for key channel parameters.

Findings

Key insights into LoS and OLoS conditions

Statistical models for path loss, shadowing, delay, and angular spread

Critical data for spectrum allocation and system design

Abstract

The upper midband, designated as Frequency Range 3 (FR3), is increasingly critical for the next-generation of wireless networks. Channel propagation measurements and their statistical analysis are essential first steps towards this direction. This paper presents a comprehensive ultra-wideband (UWB) double-directional channel measurement campaign in a large portion of FR3 (6-14 GHz) for urban microcellular environments. We analyze over 25,000 directional power delay profiles and providing key insights into line-of-sight (LoS) and obstructed line-of-sight (OLoS) conditions. This is followed by statistical modeling of path loss, shadowing, delay spread and angular spread. As the first UWB double-directional measurement campaign in this frequency range, this work offers critical insights for spectrum allocation, channel modeling, and the design of advanced communication systems, paving the way for further exploration of FR3.