Spatial and temporal characteristics of 60-GHz indoor channels

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 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.

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“…When the frequency goes up to the range of millimeter wave, the energy absorption caused by atmosphere, rain, and snow becomes increasingly prominent, which causes limitation in signal transmission distance [56]. In particular, the 60 GHz band, which shows a significant 15 dB/km atmospheric attenuation, is only feasible for short range communications [57]. For other candidate millimeter wave bands (e.g.…”

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“…For indoor environments, the 60-GHz spectrum has been proposed to provide high-throughput communication in lineof-sight (LOS) scenarios. Channel modeling for 60-GHz channels in indoor environments is presented in [5]- [8]. [5] investigates the spatial and temporal characteristics of multipath components (MPCs).…”

Empirical Modeling of Radiowave Angular Power Distributions in Different Propagation Environments at 60 GHz for 5G

“…Propagation studies at 60 GHz show that, in most situations, several propagation paths, with different propagation delays, attenuation, angles of departure (AODs), and angles of arrival (AOAs), may exist [14][15][16][17][18][19][20][21][22]. Early 60 GHz propagation studies [14][15][16][17][18] already used directional antenna steering measurements to resolve propagation paths and to gain some insight on the main scattering mechanisms. It was soon clear [14] that directional antenna steering could partially compensate the high propagation losses, providing a considerable link improvement.…”

“…This raised the interest on the knowledge of the radio channel APDs. At first, most of the studies concentrated on indoor radio channels and azimuth (horizontal) APDs [14,[16][17][18]. It was with the proposal of the millimeter wave band for 5G communications [4] that the characterization of APDs in outdoor urban radio channels at 60 GHz attracted the attention of researchers [19][20][21][22].…”