high altitude platform systems (Telecommunication)
Co-channel interference studies between high altitude platform and terrestrial system in Malaysia
... High Altitude Platform Station (HAPS) technology is a new technology that can perform the tasks currently handled terrestrial and satellite ...The high altitude platform station ...
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Performance Evaluation of WiMAX Broadband from High Altitude Platform Cellular System and Terrestrial Coexistence Capability
... an altitude of 17–22 km, have been suggested by the International Telecommunication Union (ITU) for providing communications in mm-wave broadband wireless access (BWA) and the third-generation (3G) communication ...
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Application of Single Mode Fiber Coupled Receivers in Optical Satellite to High Altitude Platform Communications
... The effect of aberrations and misalignments of optical components [8, 9], angular jitter [10], or atmospheric tur- bulence [11–13] on the single-mode fiber coupling efficiency has been analyzed in the field of optical ...
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A Novel Technique to improve the Performance of Wireless Sensor Network using Adaptive Antennas and High Altitude Platform Communications
... In this paper, the performance of Wireless Sensor Networks (WSN) is improved using adaptive antenna technique and High-Altitude Platforms Systems (HAP). An adaptive concentric circular array (ACCA) ...
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WCDMA Uplink Interference Assessment from Multiple High Altitude Platform Configurations
... Configurations of multiple HAPs can also reuse the spectrum. They can be used to deliver contiguous coverage and must take into account coexistence requirements [11, 12]. A technique not widely known is their ability to ...
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Autonomously Coordinated Multi-HAPS Communications Network: Failure Mitigation in Volcanic Incidence Area Coverage.
... High Altitude Platforms (HAPS) are aerial vehicles that oper- ate in stratospheric altitudes ranging from 17 to 50Km above mean sea level ...this altitude wind profile is described as mild and ...
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A high-altitude balloon platform for determining exchange of carbon dioxide over agricultural landscapes
... Measuring the net ecosystem exchange (NEE) of carbon dioxide for agroecosystems can show whether agricultural practices are an effective way to offset some of the carbon dioxide that was released into the atmosphere ...
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Forward link power control for high altitude platform station w-cdma system
... satellite systems represent two well established technologies that have been dominant in the telecommunications arena for ...dubbed high altitude platforms ...an altitude between 17 and 22 km ...
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Handoff Study of Ring Shaped Cellular Configuration Designed for High Altitude Platform Communications
... an altitude in the range of 17-22 km in the stratosphere ...terrestrial systems or satellite systems ...satellite systems and handover problems provided by LEO satellites ...
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Cosine Alpha Tapered Beamforming Window for Uniform Concentric Circular Array using in High Altitude Platform System
... lower after using the beamforming [2]. From the previous, the beamforming antenna array is more suitable for HAP communication systems [1].Uniform Concentric Circular Array are used in HAPs for multiple beam ...
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Optimizing an array of antennas for cellular coverage from a high altitude platform
... He is a Senior Lecturer in electronics at the University of York, Helsington, York, U.K., since 1987, and Leader of the Communications Research Group. His current interests include multiuser communications, ...
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Multi beam coverage and beamforming technology for high altitude platform station communication system
... Multi-beam antenna technology can effectively mitigate the impact of deep fading caused by multipath propagation on communication quality through spatial diversity and increase the reliability of wireless mobile ...
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1. An improvised scattering study for elevation reliant on 3g communications through high altitude platform (hap)
... as High Altitude Platforms (HAPs), is integrating with terrestrial and satellite systems in wireless communications ...of high link budget for satellite communications has minimized by ...
5
Downlink Coexistence Performance Assessment and Techniques for WiMAX Services from High Altitude Platform and Terrestrial Deployments
... High altitude platforms (HAPs) are either quasi-stationary airships or aircraft operating in the stratosphere, 17–22 km (72 000 ft) above the ground and have been suggested as a way of providing the third ...
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A WiMAX Payload for High Altitude Platform Experimental Trials
... ft) altitude the two small circularly polarised antennas mounted vertically on the outside of the building window had a clear line of sight path to the ground station located in H¨unenberg, ...
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Coexistence Performance of High Altitude Platform and Terrestrial Systems Using Gigabit Communication Links to Serve Specialist Users
... disadvantages, high-altitude platforms (HAPs) provide a practical alternative with the ability to provide both high data rate signals, due to the 69 dB link budget advantage compared to GEO ...
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Effect of lateral displacement of a high-altitude platform on cellular interference and handover
... of high-altitude platforms (HAPs) [1]–[14], which will operate in the stratosphere at an altitude of 17–22 ...Such systems will employ a cellular architecture in order to provide overall ...
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Role of Controlled Breathing in Adaptation to High Altitude
... increasing altitude whilst the percentage of oxygen within the atmosphere remains ...continued altitude exposure permits acclimatization, a progressive tolerance to hypoxia traditionally ascribed to ...
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Acute high-altitude sickness
... moderate altitude before ascending to the target elevation, described as “ staged ascent ” , augments the beneficial physiological responses seen following ascent and decreases the incidence of acute ...
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Hyperbaric oxygen therapy ameliorates acute brain injury after porcine intracerebral hemorrhage at high altitude
... HBO has been widely used as the primary therapy in patients with decompression sickness, carbon monoxide poisoning and arterial gas embolism. Plenty of studies suggest that HBO treatment is effective in brain injury at ...
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