Zobrazeno 1 - 10 of 13 pro vyhledávání: '"Shinya Sekizawa"'
1
On High-Density Resource-Restricted Pulse-Based IoT Networks
Autor: Shinya Sekizawa, Konstantinos Theofilis, Jun-nosuke Teramae, Naoki Wakamiya, Mikio Hasegawa, Ferdinand Peper, Aohan Li, Chiemi Tanaka, Kenji Leibnitz
Publikováno v: GLOBECOM
For the realization of an Internet of Things (IoT) with high densities of nodes it is necessary that wireless communication protocols are developed that offer (1) low energy consumption, (2) simplicity of encoding and decoding, (3) an asynchronous mo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa2189f11b3e69435cfc128398ab1d58
https://doi.org/10.1109/globecom42002.2020.9322326
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2
Performance and Technique of Coherent 2-μm Differential Absorption and Wind Lidar for Wind Measurement
Autor: Hironori Iwai, Shinya Sekizawa, Shoken Ishii, Ryoko Oda, Yasuhiro Murayama, Kohei Mizutani
Publikováno v: Journal of Atmospheric and Oceanic Technology. 30:429-449
A coherent 2-μm differential absorption and wind lidar (Co2DiaWiL) has been built with a high-power Q-switched Tm,Hm:YLF laser to measure CO2 concentration and radial wind speed. The performance of the Co2DiaWiL is described and analyzed, with a vie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5aa9ab8254134b84398da569d12288c
https://doi.org/10.1175/jtech-d-12-00111.1
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3
DEVELOPMENT OF A METHOD TO ESTIMATE OF DROP SIZE DISTRIBUTION ABOVE THE MELTING LAYER BY USING 400MHz-BAND WIND PROFILER AND COBRA
Autor: Katsuhiro Nakagawa, Yasushi Kitamura, Hiroshi Hanado, Nobuhiro Takahashi, Toshio Iguchi, Shinya Sekizawa
Publikováno v: PROCEEDINGS OF HYDRAULIC ENGINEERING. 51:349-354
The vertical profile of raindrop size distribution (DSD) is important for understanding rain processes. To improve the accuracy of rainfall intensity observed by precipitation radar and microwave radiometers carried on satellites, the information on
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5150c8ff7b4a876433f3b13b2d5c5c5
https://doi.org/10.2208/prohe.51.349
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5
Spatiotemporal propagation characteristics of non-line-of-sight using low antenna-height base station in microcellular environment
Autor: Mitsuhiko Mizuno, Shinya Sekizawa, Yukiyoshi Kamio, Kazumasa Taira
Publikováno v: Electronics and Communications in Japan (Part I: Communications). 86:11-21
As a remedy to multipath fading in land mobile communication, adaptive antenna arrays combined with equalizers have been proposed. For hardware realization and adaptive algorithm development in order to alleviate fading by temporal and spatial proces
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84fb4ab05b9efb6bd0f52c1de769121a
https://doi.org/10.1002/ecja.10032
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6
Configuration and performance of a measuring system for spatiotemporal characteristics of multipath fading channels using a virtual planar array
Autor: Shinya Sekizawa, Yukiyoshi Kamio, Mitsuhiko Mizuno, Kazumasa Taira
Publikováno v: Electronics and Communications in Japan (Part I: Communications). 85:11-22
As a remedy for multipath fading in land mobile communications, an adaptive array combined with an equalizer has been studied. For hardware realization and development of an adaptive algorithm for the fading prevention technique based on this tempora
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acd87f780a50803746949705449ab1cf
https://doi.org/10.1002/ecja.1100
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7
STRUCTURE OF TURBULENCE IN THE URBAN ATMOSPHERIC BOUNDARY LAYER DETECTED IN THE DOPPLER LIDAR OBSERVATION
Autor: Shoken Ishii, Yasuhiro Murayama, Shinya Sekizawa, Kohei Mizutani, Hironori Iwai, Ryoko Oda
Publikováno v: Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering). 67:I_313-I_318
Doppler lidar observation was conducted to investigate the statistical and structural characteristics of the atmospheric boundary layer (ABL) over urban area, Koganei, Tokyo, on 21 February 2010. Vertical distribution of the vertical velocity was mea
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0286ea751bc2b5c6fa5e8e3234b206f
https://doi.org/10.2208/jscejhe.67.i_313
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8
Akademický článek
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9
Conference
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10
Conference
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