Spatial and temporal characteristics of 60-GHz indoor channels

TLDR

The study used a 10‑ns resolution sliding correlator and a 7° half‑power beamwidth directional antenna sweep to measure power delay and angle profiles in various indoor and short‑range outdoor settings, from which multipath structure, received power, and statistical angle‑of‑arrival and time‑of‑arrival parameters were extracted. Results show that multipath channel characteristics strongly depend on the propagation environment, with most components predicted by image‑based ray tracing for LOS, while NLOS through composite walls requires accounting for metallic structure; the derived spatial and temporal parameters provide empirical values for designing 60‑GHz short‑range broadband systems.

Abstract

This article presents measurement results and models for 60-GHz channels. Multipath components were resolved in time by using a sliding correlator with 10-ns resolution and in space by sweeping a directional antenna with 7/spl deg/ half power beamwidth in the azimuthal direction. Power delay profiles (PDPs) and power angle profiles (PAPs) were measured in various indoor and short-range outdoor environments. Detailed multipath structure was retrieved from PDPs and PAPs and was related to site-specific environments. Results show an excellent correlation between the propagation environments and the multipath channel structures. The measurement results confirm that the majority of the multipath components can be determined from image based ray tracing techniques for line-of-sight (LOS) applications. For non-LOS (NLOS) propagation through walls, the metallic structure of composite walls must be considered. From the recorded PDPs and PAPs, received signal power and statistical parameters of angle-of-arrival and time-of-arrival were also calculated. These parameters accurately describe the spatial and temporal properties of millimeter-wave channels and can be used as empirical values for broadband wireless system design for 60-GHz short-range channels.