A Lightweight Radio Propagation Model for Vehicular Communication in Road Tunnels

Qureshi, Muhammad Ahsan; Noor, Rafidah Md; Shamim, Azra; Shamshirband, Shahaboddin; Choo, Kim‐Kwang Raymond

doi:10.1371/journal.pone.0152727

Cited by 17 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 There are also many examples of using the log-distance path loss model with a diffraction loss model. [16][17][18] As can be seen in Section 2, since the Deygout method overestimates the diffraction loss and the Bullington method underestimates it, the parameter ω 2 is used as shown in Equation (3) to obtain the proper diffraction loss value between the loss values calculated in the two methods. ω 2 is computed in the regression operations using Tikhonov regularization and the model based on the log-distance path loss model is proposed as follows:…”

Section: Proposed Methodsmentioning

confidence: 99%

“…The log‐distance path loss model is widely accepted in a variety of practical applications . There are also many examples of using the log‐distance path loss model with a diffraction loss model . As can be seen in Section 2, since the Deygout method overestimates the diffraction loss and the Bullington method underestimates it, the parameter ω 2 is used as shown in Equation to obtain the proper diffraction loss value between the loss values calculated in the two methods.…”

Section: Proposed Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A study on path loss prediction based on Tikhonov regularization using gradient adaptive step‐size in mountain areas

Lee

2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

This paper presents a method of applying a regularization concept for more accurate path loss prediction in mountainous areas. Tikhonov regularization with gradient adaptive step-size is used to adjust the path loss model. Measurements were conducted in two mountainous areas to compare the path loss prediction performances. Prediction accuracies were improved by up to 3.42 and 0.95 dB in the average error and the SD of errors by the proposed method when compared to the nontuned log-distance path loss model and Edwards-Durkin model with diffraction models. K E Y W O R D S adaptive step-size, mountain areas, path loss prediction, regression, regularization

show abstract

Section: Proposed Methodsmentioning

confidence: 99%

Section: Proposed Methodsmentioning

confidence: 99%

A study on path loss prediction based on Tikhonov regularization using gradient adaptive step‐size in mountain areas

Lee

2020

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…First, identifying whether ITS-G5 can be a reliable communication link for V2V communication. Several papers constitute evaluations of ITS-G5 with simulations and/or experiments of V2V/V2I [2], [3], [4], [5], but few, to the authors knowledge, evaluate high speed highway V2V communication through an experimental design. LTE-V2X testing in the 5.9 GHz band in China [6] and 5G/ITS-G5 comparisons in Finland being two notable recent works [7].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Technological and Political Challenges of V2V Communication in Light of an Experimental Scenario Set Up

et al. 2021

View full text Add to dashboard Cite

The suggested benefits of automated vehicles are plentiful, but many of the benefits depend on connectivity with other vehicles and infrastructure to be useful to the society at large. This paper identifies two main research gaps: first, to identify whether ITS-G5 can be a reliable communication link for V2V communication. Second, to discuss which implications the results have for practitioners working with the future implementation of CAVs. We answer these research gaps by introducing a conceptualization of V2V communication operationalized through controlled experiments with vehicles on a closed runway. In the experiments, onboard ITS-G5 communication devices are used for measuring signal strength and package loss between the vehicles. The results indicate that ITS-G5 technology has some limitations, especially for long range communication (>1500 m), and in cases with other traffic shadowing the signal. We conclude that although ITS-G5 has high risk of reduced radio link in non-line-of-sight situations and in situations where the radio signal is shadowed by other traffic, the latency and operational range would be sufficient for safety critical services in line-of-sight situations. For policymakers and practitioners working with implementing communication for vehicles, the results imply that large-scale piloting is critical for testing the technology in a realistic environment outside of the laboratories. In such environments different stakeholders and disciplines can meet and collaborate to avoid siloed approaches.

show abstract

“…Usually, such obstruction can be modeled as either knife edge or rounded edge obstruction [9][10][11][12][13][14][15][16]. Knife edge obstruction model in most cases underestimates the diffraction loss.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Radius of Curvature of Rounded Edge Hill Obstruction Based on Occultation Distance and ITU-R 526-13 Methods

Uko¹

2017

AJSEA

View full text Add to dashboard Cite

Abstract:In this paper, comparative study of the ITU 526-13 method and the occultation distance-based method for computing the radius of curvature for rounded edged fitted to the vertex of hilltop obstruction is presented. In the study, path profiles of microwave links with isolated single edged hilltop and another path profile with isolated double edged hilltop are used. The frequencies considered are from the 1.5GHz in the L-band to 36GHz in the K-band. The result show that for all the frequencies considered, the occultation distance for the single edged hilltop remained constant at 80.923 m and that for the double edged hilltop remained constant at 532.203 m. Also, while the radius of curvature by the ITU 526-13 method varies with frequency in the two path profiles considered, the radius of curvature by the occultation distance method remained constant for all the frequencies considered in each of the two path profiles considered. Also, for the double edged hilltop, the radius of curvature from ITU 526-13 method greatly exceeded the radius of curvature by the occultation distance method for all the frequencies considered. The least difference in about 58% at frequency of 1.5GHz and the difference increased to about 115% at 36GHz. However, for the single edged hilltop, the radius of curvature for the two methods are relatively equal for frequencies above 6GHz. Essentially, ITU 526-13 method works well like the occultation distance-based method for the single edged hilltop. Further studies are therefore required to determine the situations under which the ITU 526-13 method can be applied in computing the radius of curvature for rounded edge approximation used in diffraction loss computation.

show abstract

A Lightweight Radio Propagation Model for Vehicular Communication in Road Tunnels

Cited by 17 publications

References 42 publications

A study on path loss prediction based on Tikhonov regularization using gradient adaptive step‐size in mountain areas

A study on path loss prediction based on Tikhonov regularization using gradient adaptive step‐size in mountain areas

Investigating the Technological and Political Challenges of V2V Communication in Light of an Experimental Scenario Set Up

Comparative Study of Radius of Curvature of Rounded Edge Hill Obstruction Based on Occultation Distance and ITU-R 526-13 Methods

Contact Info

Product

Resources

About