Frequency-Agile Pathloss Models for Urban Street Canyons

Haneda, Katsuyuki; Omaki, Nobutaka; Imai, T.; Raschkowski, Leszek; Peter, Michael; Roivainen, Antti

doi:10.1109/tap.2016.2536170

Cited by 46 publications

(23 citation statements)

References 12 publications

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“…(3.9) of [61], also see p.3040 in [20]). These include the close-in (CI) free space reference distance model (with a 1 m reference distance) [20], [28], [83], [84], the CI model with a frequency-weighted or height weighted path loss exponent (CIF and CIH models) [18], [19], [21], [24], and the floating intercept (FI) path loss model, also known as the ABG model because of its use of three parameters α, β, and γ [18], [20]- [22], [108], [114]. Standard bodies historically create omnidirectional path loss models with the assumption of unity gain antennas for generality.…”

Section: B Large-scale Path Loss Modelsmentioning

confidence: 99%

Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models

Rappaport¹,

Xing²,

MacCartney³

et al. 2017

IEEE Trans. Antennas Propagat.

1,285

746

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This paper provides an overview of the features of fifth generation (5G) wireless communication systems now being developed for use in the millimeter wave (mmWave) frequency bands. Early results and key concepts of 5G networks are presented, and the channel modeling efforts of many international groups for both licensed and unlicensed applications are described here. Propagation parameters and channel models for understanding mmWave propagation, such as line-of-sight (LOS) probabilities, large-scale path loss, and building penetration loss, as modeled by various standardization bodies, are compared over the 0.5-100 GHz range.

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Section: B Large-scale Path Loss Modelsmentioning

confidence: 99%

Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models

Rappaport¹,

Xing²,

MacCartney³

et al. 2017

IEEE Trans. Antennas Propagat.

1,285

746

View full text Add to dashboard Cite

show abstract

“…In all of the examples, we assume that the PL statistics are stationary and use the same PL model for all BSs [ 5 , 12 , 30 , 39 ]. The BS antenna is either an omni-directional or an eight-sector directive antenna that covers 360

with

and

dB.…”

Section: Path Loss and Antenna Modelmentioning

confidence: 99%

“…Conventionally PL-based positioning has two phases (e.g., [ 3 , 4 , 5 ]): (i) fitting a PL model to training data, if such training data are available, and (ii) determining link distance estimates based on the PL model and calculating the position estimate. Channel measurements can be used to measure the training data and then a PL model can be fitted to the data [ 3 , 10 , 11 , 12 , 13 ]. The PL model describes the link distance dependency and the variation from the expected value, i.e., shadow fading (SF).…”

Section: Introductionmentioning

confidence: 99%

Influence of Noise-Limited Censored Path Loss on Model Fitting and Path Loss-Based Positioning

Karttunen

Valkama

Talvitie

2021

Sensors

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Positioning is considered one of the key features in various novel industry verticals in future radio systems. Since path loss (PL) or received signal strength-based measurements are widely available in the majority of wireless standards, PL-based positioning has an important role among positioning technologies. Conventionally, PL-based positioning has two phases—fitting a PL model to training data and positioning based on the link distance estimates. However, in both phases, the maximum measurable PL is limited by measurement noise. Such immeasurable samples are called censored PL data and such noisy data are commonly neglected in both the model fitting and in the positioning phase. In the case of censored PL, the loss is known to be above a known threshold level and that information can be used in model fitting and in the positioning phase. In this paper, we examine and propose how to use censored PL data in PL model-based positioning. Additionally, we demonstrate with several simulations the potential of the proposed approach for considerable improvements in positioning accuracy (23–57%) and improved robustness against PL model fitting errors.

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“…Path loss for each was characterized with slope-intercept models. Haneda et al [7] presented path loss models based on measurements in urban canyons in multiple cities. Same street LOS measurements were unobstructed by vegetation, with NLOS defined as being around-the-corner, and the 3GPP 36.814 UMi NLOS model with Manhattan grid layout was modified to include a frequency dependent turn loss at the corner.…”

Section: Introductionmentioning

confidence: 99%

Suburban Fixed Wireless Access Channel Measurements and Models at 28 GHz for 90% Outdoor Coverage

Chizhik

Feick

et al. 2020

IEEE Trans. Antennas Propagat.

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Achieving adequate coverage with high gain antennas is key to realizing the full promise of the wide bandwidth available at mm/cm bands. We report extensive outdoor measurements at 28 GHz in suburban residential areas in New Jersey and Chile, with over 2000 links measured for samestreet links (vegetation blocked LOS) from 13 streets and otherstreet links (true NLOS) from 7 streets, using a specialized narrowband channel sounder at ranges reaching 200 m. The measurements, applicable to fixed wireless access, involved a 55 • transmit antenna placed on the exterior of a street-facing window and a 10 • receive horn antenna spinning on top of a van mast at 3 m height, emulating a lamppost-mounted base station. Measured path gain-distance dependence is well represented by power-law models, and azimuth gains at the base are degraded through scattering by more than 4.3 dB for 10% of links. It was found that, with 51 dBm EIRP at the FWA base station and 11 dBi antenna at CPE, 1 Gbps downlink rate can be delivered to an outdoor mounted CPE for up to 100 m from a base station deployed in the same street with 90% coverage guarantee.

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Frequency-Agile Pathloss Models for Urban Street Canyons

Cited by 46 publications

References 12 publications

Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models

Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models

Influence of Noise-Limited Censored Path Loss on Model Fitting and Path Loss-Based Positioning

Suburban Fixed Wireless Access Channel Measurements and Models at 28 GHz for 90% Outdoor Coverage

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