Indoor-Office Large-Scale Wireless Channel Characterization in cmWave/FR3 Spectrum

2025-09-30

AI Summary

This study addresses the lack of empirical channel models for centimeter-wave (cmWave) frequencies (6.9–14.5 GHz, FR3 band) in complex commercial office environments. We conduct the first systematic measurement campaign and statistical channel modeling across multiple office floors, covering representative indoor spaces—including workstations, meeting rooms, corridors, and laboratories—and quantify key propagation parameters: path loss, shadow fading, delay spread, and angular spread. Based on the measurements, we propose a generic, measurement-based indoor channel model tailored to cmWave/FR3 bands, revealing high-frequency signal attenuation trends and spatial dispersion characteristics in realistic office settings. The resulting model provides an empirically grounded, reusable framework to support high-frequency indoor network deployment, link budget optimization, and MIMO system design. It significantly improves the accuracy of wireless performance prediction and enhances the reliability of network planning for commercial buildings.

Technology Category

• Cognitive Modeling & Cognitive Systems: Applications
• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Machine Learning: Kernel Methods

Application Category

• Systems and Infrastructure for Web, Mobile and WoT: Web performance, measurement, and characterization
• Web Mining and Content Analysis: Web measurements
• Security and Privacy: Large-scale security measurements

Abstract

This paper presents comprehensive findings on the characterization of Indoor Hotspot channel parameters, derived from an extensive experimental campaign conducted at 6.9, 8.3, and 14.5 GHz in a commercial office building. Extensive measurements were carried out in diverse indoor office settings, including cubicles, conference rooms, hallways, and laboratory spaces across four floors. The path loss, shadow fading, delay spread, and angular spread was modeled. Our results offer significant insights into the attenuation and dispersion characteristics of wireless signals in diverse indoor settings in the centimeter-wave frequency band, and can be used for improving indoor network design and performance in commercial buildings.

Problem

• Characterizing wireless channel parameters in indoor office environments
• Modeling path loss and signal dispersion in centimeter-wave bands
• Improving indoor network design through empirical propagation analysis

Innovation

• Characterized indoor wireless channels at cmWave frequencies
• Modeled path loss and multipath dispersion parameters
• Conducted extensive measurements across diverse office environments