Wideband UHF and SHF long-range channel characterization

Edward Kassem,Jiri Hruska,Roman Marsalek,Martin Pospisil,Jiri Blumenstein,Ales Povalac,Josef Vychodil

doi:10.1186/s13638-019-1505-2

Edward Kassem, Jiri Hruska + Show 5 more

Open Access

https://doi.org/10.1186/s13638-019-1505-2

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Abstract

This paper presents an outdoor long-range (from 315 m up to 5.3 km) fixed channel campaign for both ultra high frequency and super high frequency bands with co-polarized horizontal and vertical antenna configurations. It investigates the channel characteristics of device to device communication scenarios underlaying the 5th generation networks by providing detailed research. Both line of sight and non-line of sight measurements in 1.3 GHz and 5.8 GHz frequency bands with bandwidth up to 600 MHz were conducted. The path loss, root mean square delay spread, coherence bandwidth, and channel frequency response variation are characterized. We observed that the variation is negligible in microcell line of sight environment for both above mentioned frequencies, whereas it significantly increases with frequency in different macrocell non-line of sight environments. The distance dependency of path loss was also derived. It was observed that the root mean square delay spread decreases with frequency for both line of sight microcell and non-line of sight macrocell measurements. A dependency between the root mean square delay spread and transmitter-receiver distance in non-line of sight environments was also captured. The relation between the coherence bandwidth and the root mean square delay spread was depicted. It demonstrates an exponential function in all considered channel combinations.

Highlights

Device to device communication [1, 2] is an important technology which enables data flow between humans and between machines without human intervention
For a microcell line of sight environment, we provided the channel frequency response variation, the path loss, and the root mean square delay spread distribution in the case of vertical and horizontal polarizations for both 1.3 GHz and 5.8 GHz center frequencies
The path loss values of the R1 line of sight route are in the range of 87.6–88.5 dB with a mean value 88.1 dB and standard deviation 0.22 dB for 1.3 GHz with horizontal copolarization, 88.2–89.9 dB with a mean value 89.04 dB and standard deviation 0.33 dB for 1.3 GHz with vertical copolarization, 114.9–116.1 dB with a mean value 115.49 dB and standard deviation 0.23 dB for 5.8 GHz horizontal co-polarization, and 116.5–117.9 dB with a mean value 117.1 dB and standard deviation 0.24 dB for 5.8 GHz with vertical co-polarization

Summary

Introduction

Device to device communication [1, 2] is an important technology which enables data flow between humans and between machines without human intervention. It can be used underlying the available cellular networks. The 5th generation system technology, 3rd Generation Partnership Project Release 15, will have to support high performance in spectral efficiency and throughput measurements. It is able to send large amounts of data with a high rate and low latency and support a large amount of connected devices.

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