The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Masaharu Hata - One of the best experts on this subject based on the ideXlab platform.
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experimental study of mobile propagation loss Correction Formula for a slope terrain area
Vehicular Technology Conference, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
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VTC Fall - Experimental Study of Mobile Propagation Loss Correction Formula for a Slope Terrain Area
2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
Takahiro Fujitani - One of the best experts on this subject based on the ideXlab platform.
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experimental study of mobile propagation loss Correction Formula for a slope terrain area
Vehicular Technology Conference, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
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VTC Fall - Experimental Study of Mobile Propagation Loss Correction Formula for a Slope Terrain Area
2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
Polina Bayvel - One of the best experts on this subject based on the ideXlab platform.
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A Modulation Format Correction Formula for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering
Journal of Lightwave Technology, 2019Co-Authors: Daniel Semrau, Ri Killey, Eric Sillekens, Polina BayvelAbstract:A closed-form Formula is derived, which corrects for the modulation format dependence of the Gaussian noise (GN) model in the presence of inter-channel stimulated Raman scattering (ISRS). The analytical result enables a rapid estimate of the nonlinear interference (NLI) for arbitrary modulation formats and avoids the need for complex integral evaluations and split-step simulations. It is shown that the modulation format dependent NLI can be approximated by two contributions, one originating from a single span and one asymptotic contribution for a large number of spans. The asymptotic contribution is solved in closed-form for arbitrary links consisting of identical spans, making the result applicable for fiber systems using lumped, distributed, or hybrid amplification schemes. The methodology is applied to the ISRS GN model and a modulation format Correction Formula in closed-form is derived, which accounts for an arbitrary number of spans, ISRS, arbitrary launch power distributions and wavelength dependent dispersion and attenuation. The proposed Formula is validated by numerical simulations over the entire C+L band for multiple fiber types.
Shigeru Tomisato - One of the best experts on this subject based on the ideXlab platform.
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experimental study of mobile propagation loss Correction Formula for a slope terrain area
Vehicular Technology Conference, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
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VTC Fall - Experimental Study of Mobile Propagation Loss Correction Formula for a Slope Terrain Area
2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010Co-Authors: Takahiro Fujitani, Shigeru Tomisato, Masaharu HataAbstract:Correction of the urban mobile propagation loss Formula for residential areas on hilly and/or slope terrain, especially within 1km distance from a base station becomes one of the important issues in radio link and cell layout designs. This paper introduces an example of Correction Formula for the slope terrain area based on an experimental study of mobile path loss prediction. The result shows the path loss at the objective point can be estimated by the urban mobile path loss and the Correction value according to the factor expressed by the elevation angle from the base station antenna top.
Huilan Ren - One of the best experts on this subject based on the ideXlab platform.
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velocity characteristics of fragments from prismatic casing under internal explosive loading
International Journal of Impact Engineering, 2017Co-Authors: Jianguo Ning, Yan Duan, Huilan RenAbstract:Abstract In this study, a prismatic casing, which is a part of a variable geometry device, is designed to improve the effectiveness of its impact distribution. The fragment velocity of the casing is investigated experimentally by high-speed photography. The experimental data indicate that the fragment velocities are influenced by the rarefaction wave from both the axial and transverse directions. In addition, the Parallel for Multi-material in Cell 3D (pMMIC-3D) hydrocode, coupled with the Lagrangian marker-point weighted method, is used to numerically investigate the fragmentation process of the prismatic casing. The numerical results confirm the considerable influence of the rarefaction wave on the fragment velocity. Therefore, a Correction Formula is proposed to calculate the initial fragment velocity on the basis of the experimental data. The agreement between the numerical results and corrected results confirms that the Correction Formula can be used to predict the fragment distribution of such prismatic casings.
