Towards a Comprehensive Ray-Tracing Modeling of an Urban City With Open-Trench Drains for Mobile Communications

Lim, Soo Yong; Soo, Qi Ping; Adam, Ahmed; Lim, David Wee Gin; Yun, Zhengqing; Iskander, Magdy F.

doi:10.1109/access.2017.2666882

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…where ϕ 0 < nπ − π means the case of 0-face illumination and ϕ 0 > π means the case of n-face illumination. This γ i0 is also required for Equations (8) and (9). Once γ i0 is known, the angle of transmission in medium 1, γ t1 , can be found using Snell's law.…”

Section: Modified Maliuzhinets' Coefficient For Double-layered Wedgmentioning

confidence: 99%

“…Since this representation was not suitable for use in ray models, researchers prepared some different formulations in a UTD‐like form 3‐7 . It has been also observed that wherever there is a need for deterministic channel modeling (eg, for terrestrial communication, satellite communication), these UTD‐based diffraction coefficients are still relevant 8,9 . This worked as the motivation for us to carry out this work.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6][7] It has been also observed that wherever there is a need for deterministic channel modeling (eg, for terrestrial communication, satellite communication), these UTD-based diffraction coefficients are still relevant. 8,9 This worked as the motivation for us to carry out this work.…”

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confidence: 99%

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A modified two dimensional Maliuzhinets' diffraction coefficient for modeling snow or vegetation covered dielectric wedges

Majumdar

Bhattacharya

2020

Micro & Optical Tech Letters

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A new diffraction coefficient, obtained by modifying the Maliuzhinets' diffraction coefficient, has been proposed here in this article for a double-layered dielectric wedge which can be considered as an approximated version of a snow or vegetation-covered dielectric wedge in a practical propagation channel modeling scenario. An experiment was conducted with an artificially created double-layered wedge for validating the response from the proposed coefficient in a real-life scenario. The same environment was modeled and simulated using gprMax simulator, which further verified the experimental result and the effectiveness of the newly developed coefficient.

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Section: Modified Maliuzhinets' Coefficient For Double-layered Wedgmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A modified two dimensional Maliuzhinets' diffraction coefficient for modeling snow or vegetation covered dielectric wedges

Majumdar

Bhattacharya

2020

Micro & Optical Tech Letters

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“…To overcome this challenge, researchers apply RT models to solve mmWave propagation problems. A survey of current propagation modeling tools shows that RT has been a backbone of many of these tools because of its less reliance on computer memory and the ability to solve the three-dimensional problems on modern desktop computers [11]. When RT is concerned, determining the ray type from a point source to a field point in an urban setting is not a simple task, but a hot research topic since the 1990s [12].…”

Section: Introductionmentioning

confidence: 99%

On the Secrecy Capacity of 5G New Radio Networks

Xiao

Zhang

2018

Wireless Communications and Mobile Computing

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The new radio technology for the fifth-generation wireless system has been extensively studied all over the world. Specifically, the air interface protocols for 5G radio access network will be standardized by the 3GPP in the coming years. In the next-generation 5G new radio (NR) networks, millimeter wave (mmWave) communications will definitely play a critical role, as new NR air interface (AI) is up to 100 GHz just like mmWave. The rapid growth of mmWave systems poses a variety of challenges in physical layer (PHY) security. This paper investigates those challenges in the context of several 5G new radio communication technologies, including multiple-input multiple-output (MIMO) and nonorthogonal multiple access (NOMA). In particular, we introduce a ray-tracing (RT) based 5G NR network channel model and reveal that the secrecy capacity in mmWave band widely depends on the richness of radio frequency (RF) environment through numerical experiments.

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“…The power gain is observed for a variety of scenarios at the two aforementioned frequencies by engaging an interactive 3D ray-tracing tool developed by the Hawaii Center for Advanced Communications (HCAC). We have previously engaged the same ray-tracing tool to create a simple city model comprising four buildings and observed how waves propagate differently in two distinct scenarios [7]. The open-trench drain, in and by itself, makes up a legitimate channel in which waves can satisfactorily travel for a reasonable distance [8].…”

Section: Introductionmentioning

confidence: 99%

Further Propagation Investigation of a Low Density Urban Environment With Drains

Lim¹,

Lim²,

Lim³

et al. 2017

PIER C

Self Cite

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Abstract-In South East Asian countries, particularly in a developedAsian city, open-trench drains systems are prominent due to climatic differences. Open-trench drain structures occupy a great part of the terrain topography in Malaysia, and therefore this project aims to further investigate the impacts that open-trench drain systems have on radio propagation prediction in a low density urban environment. Towards that end, we have engaged an interactive 3D ray-tracing tool to build the environment depicting a low density setting with clusters of low rise building structures oriented far apart from each other. The existence of open-trench drains is incorporated into a mock city model to obtain propagation prediction results for different operating frequencies. One of the primary differences this study in comparison to the existing studies on ray-tracing modeling of an urban city with open-trench drains is that the quantity of building models and open-trench drain structures are generated over a wider area to mimic actual low density city settings. When such scenarios are considered, the impacts of open-trench drain structures fade away.

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Towards a Comprehensive Ray-Tracing Modeling of an Urban City With Open-Trench Drains for Mobile Communications

Cited by 10 publications

References 20 publications

A modified two dimensional Maliuzhinets' diffraction coefficient for modeling snow or vegetation covered dielectric wedges

A modified two dimensional Maliuzhinets' diffraction coefficient for modeling snow or vegetation covered dielectric wedges

On the Secrecy Capacity of 5G New Radio Networks

Further Propagation Investigation of a Low Density Urban Environment With Drains

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