Broadband Communications via High-Altitude Platforms

Broadband Communications via High Altitude Platforms / Edition 1
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A unique book with systematic and thorough coverage of HAP related issues, problems and solutions. Handbook of Broadband. A unique book with systematic and thorough coverage of HAP related issues, problems and solutions. Handbook of Broadband Communications from High.

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This is a dummy description. A unique book with systematic and thorough coverage of HAP related issues, problems and solutions. Handbook of Broadband Communications from High Altitude Platforms provides a thorough overview and state of the art of the HAP enabling technologies, as well as describing recent research activities with most promising results.

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It outlines the roadmap for future development of HAPs. Focuses on placing HAPs in the perspective of current and future broadband wireless communication systems, providing the readers with an overview of the constraints affecting HAP-based broadband communications Provides a thorough overview of HAP enabling technologies, describes recent research activities with most promising results, and outlines the roadmap for future development of HAPs Covers enabling technologies and economics of HAP-based communication system including issues related to aeronautics, energetics, operating scenarios, applications and business modeling Examines the operating environment, advanced communication techniques for efficient radio link resource management, and suitable antennas Addresses multiplatform constellations, presenting the multiple HAP constellation planning procedure and discussing the networking implications of using multiple HAPs.

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Table of contents 1. Wireless communications in a HAP environment.

Broadband Communications via High Altitude Platforms : David Grace :

Candidate standards for provision of services and applications from HAPs. Overview of past and present HAP related projects, trials and development plans. Operating environment and related challenges. Types of airborne vehicles used for HAPs.

Broadband for all from High Altitude Platforms

S of the constraint equivalent to the SINR for session m to user k since the numerator becomes the product of the power variable p m , i , c , t times the gain of the user on the trio combination i , c , t. Branching is the splitting of a node into two or more nodes by adding new upper and lower bounds on one of the variables which is called the branching variable. A HAPS system may provide mobile cellular coverage or fixed wireless services LMDS, broadcasting to regions ranging from high-density urban areas to low-density rural areas. Tafazolli 8. However, a single LEO satellite based system would not be suitable for real-time transmission since the satellite is frequently out of visibility. This section illustrates a very efficient formulation for the extended problem. Current research interests include cognitive radio and dynamic spectrum management, particularly for high-altitude platform and terrestrial ad hoc networks.

Power subsystem alternatives. Typical characteristics of HAP aircraft and airships.

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Operating scenarios. Antenna requirements and related challenges. System and network architecture of HAP-based communication systems. Applications and services.

Introduction to high-altitude platforms

Business Model Introduction. Service Provider Centric Models.

A channel model and time series generator for a mobile high altitude platform communication systems

Risk Assessment. Trends in aeronautical development. The atmospheric impairments such as rain fading and scintillation fading channel models are included in the model. Rain fading is modelled according to the modified DLR segment approach for generating channel attenuation time series, taking into consideration the specifics of stratospheric communication systems, namely the variable elevation angle and different carrier frequency.

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Additional fading due to scintillation, which may be harmful in deep fades caused by the rain, is modelled by adjusting the satellite scintillation channel model so that the amount of scintillation fading is correlated to the attenuation caused by the rain. For the source code and examples of digital elevation model, send mail to: tomaz.

Brodaband Communication via High Altitude Platforms

Javornik, M. Ozimek, G.

Kandus, "Adaptive coding and modulation for mobile wireless access via high altitude platforms," Wirel. Plevel, T. Joint conference Genoa: Istituto Internatinale dlle Comunicazione,