Ultra-wideband Double-Directionally Resolved Channel Measurements of Line-of-Sight Microcellular Scenarios in the Upper Mid-band

TL;DR

This paper provides comprehensive ultra-wideband double-directional channel measurements in the upper mid-band (6-18 GHz) for line-of-sight microcellular scenarios, offering insights into channel characteristics crucial for future 5G and beyond systems.

Contribution

It presents the first detailed measurement campaign in the upper mid-band for LOS microcellular environments, analyzing key channel parameters across the entire spectrum.

Findings

Path loss is lower than free-space predictions due to multipath effects.

Delay spread and angular spread are highly stable across the band.

Environmental multipath significantly influences channel behavior.

Abstract

The growing demand for higher data rates and expanded bandwidth is driving the exploration of new frequency ranges, including the upper mid-band spectrum (6-24 GHz), which is a promising candidate for future Frequency Range 3 (FR3) applications. This paper presents ultra-wideband double-directional channel measurements in line-of-sight microcellular scenarios within the upper mid-band spectrum (6-18 GHz). Conducted in an urban street canyon environment, these measurements explore key channel characteristics such as power delay profiles, angular power spectra, path loss, delay spread, and angular spread to provide insights essential for robust communication system design. Our results reveal that path loss values for both omni-directional and best beam configurations are lower than free-space predictions due to multipath contributions from the environment. Analysis also indicates a high degree of stability in delay spread and angular spread across the entire band, with small variation between sub-bands.