Using Space Diversity against Attenuation through Vegetation: A Field Study for Quasi-mm Wave Band Fixed Wireless Access Systems

Takahashi, Naoto; Ueno, S.; Ohmoto, R.

doi:10.1109/apmc.2005.1606794

Cited by 6 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…DG was found to be 6.7 dB in average. This is consistent with the findings in [9], that reported diversity gains in vegetation of 6-8 dB using 4 degrees HPBW cassegrain antennas at 26 GHz. DG can also be seen as a measure of how different the results obtained can be by performing the measurements with two directional antennas aligned in boresight and receiving the direct TX-RX power component (P DIRECT ), or by performing a directional analysis and finding the strongest power component (P M AX ).…”

Section: Measurement Results and Directional Multipath Analysissupporting

confidence: 93%

24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation

Rodríguez

Abreu

Almeida

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

View full text Add to dashboard Cite

This paper presents a measurement-based analysis of cm-wave radio propagation through vegetation at 24 GHz. A set of dedicated directional measurements were performed with horn antennas located close to street level inside a denselyvegetated area illuminated from above. The full azimuth was examined for the elevation range from +10 to +30 degrees at each of the measurement positions in order to explore the directional characteristics of the channel. The detailed analysis of the spatial multipath components scattered from the trees suggests, in average, the presence of 5 strong treescattered components per location with an azimuthal deviation of approximately 20 degrees between the strongest and the direct transmitter-receiver components. A diversity gain of approximately 7 dB is estimated, plus 2 dB extra in the case of considering multi-beam combining techniques. Tree clutter attenuation was found to be in the range 2.6-3.8 dB/m for the first meters inside the vegetated area. This attenuation can be predicted by the current ITU-R models, although some modifications are suggested. Single-tree attenuation was estimated to be approximately 20 dB. The different models and observations presented along the paper are useful for simulation and radio network planning of future wireless systems operating at 24 GHz in presence of vegetation.

show abstract

Section: Measurement Results and Directional Multipath Analysissupporting

confidence: 93%

24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation

Rodríguez

Abreu

Almeida

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

View full text Add to dashboard Cite

show abstract

“…are found to cause the unexpected loss of the foliage shadowed links, mitigation techniques are suggested for the improvement of the reliability of these links. Some research works related to the studies of the spatial diversity have been conduced in [62,63]. However, more research work on other diversity techniques such as depolarization [64] diversity or MIMO technique with foliage effect can be done.…”

Section: Discussionmentioning

confidence: 99%

Investigations of Foliage Effect on Modern Wireless Communication Systems: A Review

Meng¹,

Lee²

2010

PIER

View full text Add to dashboard Cite

Abstract-In this paper, a large number of studies of the effect of the foliage on single or lines of trees on modern wireless communication systems are reviewed. The paper is focused on the experimental works mainly done for commercial applications such as cellular communication and high speed point-to-point fixed link at the microwave and millimeter wave frequencies. For this review study, the development of the foliage loss prediction methods and the factors influencing the tree-induced shadowing effect are highlighted. In view of current research work in this area, some possible future works are proposed to improve the performance of modern wireless communication systems with the effect of foliage.

show abstract

“…Besides, 5G FWA presents a number of notable advantages such as rapid service roll-out time, lower roll-out costs, and lower operational expenditure (Opex) compared with the traditional cable/fiber installations such as FTTH, as well as other wireline solutions. These advantages are not only beneficial to the service providers but also for the subscribers [27,247,[255][256][257][258][259][260].…”

Section: Fixed Wireless Accessmentioning

confidence: 99%

Towards Enhanced Mobile Broadband Communications: A Tutorial on Enabling Technologies, Design Considerations, and Prospects of 5G and beyond Fixed Wireless Access Networks

et al. 2021

View full text Add to dashboard Cite

There has been a growing interconnection across the world owing to various multimedia applications and services. Fixed wireless access (FWA) is an attractive wireless solution for delivering multimedia services to different homes. With the fifth-generation (5G) and beyond mobile networks, the FWA performance can be enhanced significantly. However, their implementation will present different challenges on the transport network due to the incessant increase in the number of required cell-sites and the subsequent increase in the per-site requirements. This paper presents a comprehensive tutorial on the enabling technologies, design considerations, requirements, and prospects of broadband schemes. Furthermore, the related technical challenges of FWA are reviewed, and we proffer potential solutions to address them. Besides, we review various transport network options that can be employed for FWA deployment. In this regard, we offer an in-depth discussion on their related requirements for different use cases. Moreover, we give an insight into the 3GPP RAN functional split implementations and implications on the 5G FWA transport network solutions. The concepts of virtualized RANs for attending flexibly to the dynamic nature of different use cases are also presented.

show abstract

Using Space Diversity against Attenuation through Vegetation: A Field Study for Quasi-mm Wave Band Fixed Wireless Access Systems

Cited by 6 publications

References 2 publications

24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation

24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation

Investigations of Foliage Effect on Modern Wireless Communication Systems: A Review

Towards Enhanced Mobile Broadband Communications: A Tutorial on Enabling Technologies, Design Considerations, and Prospects of 5G and beyond Fixed Wireless Access Networks

Contact Info

Product

Resources

About