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World radiocommunication conference 12 : implications for the spectrum eco-system [PDF]
, 2012 Spectrum allocation is once more a key issue facing the global telecommunications industry. Largely overlooked in current debates, however, is the World Radiocommunication Conference (WRC).
Irvine, James +2 more
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How Do Limitations in Spectrum Fungibility Impact Spectrum Trading? [PDF]
, 2013 Secondary markets for spectrum trading have been considered an important solution for generating spectrum opportunities in an environment where scarcity is the rule.
Gomez, Marcela +4 more
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Phase-Sensitive 2D Motion Estimators Using Frequency Spectra of Ultrasonic Echoes
Applied Sciences, 2016 Recently, high-frame-rate ultrasound has been extensively studied for measurement of tissue dynamics, such as pulsations of the carotid artery and heart. Motion estimators are very important for such measurements of tissue dynamics.
Hideyuki Hasegawa
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Wind Speed Spectrum of a Moving Vehicle under Turbulent Crosswinds
Applied Sciences, 2023 Wind loads have become one of the key influencing factors for the running safety of vehicles and comfort of passengers. The investigation of the wind speed spectrum characteristics of a moving vehicle under turbulent crosswinds is of great importance ...
Qingsong Duan
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Direct Measurement of Laser Noise Spectrum with a Frequency-to-Voltage Converter [PDF]
, 2022 The stability performance of laser-pumped Rb-cell atomic clocks is affected by the laser spectral characteristics. It is then important to investigate the laser spectrum, especially since laser noise measurements are rarely found in the literature.
Antona, G +17 more
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Multipath Identification and Mitigation for Enhanced GNSS Positioning in Urban Environments
SensorsDue to the increasing demand for accurate and robust GNSS positioning for location-based services (LBS) in urban regions, the impacts prevalent in metropolitan areas, like multipath reflections and various interferences, have become persistent challenges.
Qianxia Li +5 more
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Effect of a Novel Tooth Pitting Model on Mesh Stiffness and Vibration Response of Spur Gears
Mathematics, 2022 The existence of pitting failure has a direct influence on the time-varying mesh stiffness (TVMS) and thus changes the vibration properties of the gears.
Jingyu Hou +3 more
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The Site-Frequency Spectrum of Linked Sites [PDF]
Bulletin of Mathematical Biology, 2010 The site-frequency spectrum, representing the distribution of allele frequencies at a set of polymorphic sites, is a commonly used summary statistic in population genetics. Explicit forms of the spectrum are known for both models with and without selection if independence among sites is assumed.
openaire +2 more sources
Frequency-swapping aided femtocells in twin-layer cellular networks relying on fractional frequency reuse [PDF]
, 2012 Femtocells constitute an economical solution conceived for improving the indoor coverage, which are capable of achieving a high network capacity. In order to guarantee a high Area Spectral Efficiency (ASE), femtocells have to reuse the spectrum of ...
Jin, Fan +5 more
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Sālmand, 2020 Objectives The aim of this study was to evaluate the effects of a corrective exercise protocol on the frequency spectrum of Ground Reaction Force (GRF) in older adults with genu valgum during double-leg drop-landing task.
Elham Sorkhe, Amir Ali Jafarnezhadgero
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