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High-Altitude Platforms for Wireless Communications

2008-11-24 Technology & Engineering
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Release : 2008-11-24
Genre : Technology & Engineering
Kind : eBook
Book Rating : 617/5 ( reviews)

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Book Synopsis High-Altitude Platforms for Wireless Communications by : Alejandro Aragón-Zavala

Download or read book High-Altitude Platforms for Wireless Communications written by Alejandro Aragón-Zavala. This book was released on 2008-11-24. Available in PDF, EPUB and Kindle. Book excerpt: Provides an introduction to High-Altitude Platform Stations (HAPS) technology and its applications for wireless communications High-altitude platform stations offer a promising new technology that combines the benefits of terrestrial and satellite communication systems for delivering broadband communications to users at a low cost. They are easily deployable and easy to maintain, which is why they offer a good alternative for network operators who need to find ways to get more coverage to satisfy the increasing demand for more capacity. HAPS are usually balloons, airships or unmanned aerial systems (UAS) located in the stratosphere. An enormous interest has grown worldwide to examine their use not only for broadband communications, but also for emergency services, navigation, traffic monitoring, cellular, etc. Key features include: Unique book focusing on emerging HAPS technology and its applications Provides a thorough overview of the technology including HAPS-based communications systems, antennas for HAPS, radio propagation and channel modelling issues and HAPS networking aspects Presents various HAPS-related projects and initiatives developed throughout the world (North America, Europe and Asia-Pacific) Features a comprehensive overview on both aeronautical and telecommunications regulatory aspects, which will affect the deployment and future developments in the field of HAPS High-Altitude Platform Systems for Wireless Communications will prove essential reading for postgraduate students in the field of HAPS, engineers, developers and designers involved in the design and maintenance of HAPS, aerospace engineers, and communications system planners and researchers.

Broadband Communications via High Altitude Platforms

2011-06-20 Technology & Engineering
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Release : 2011-06-20
Genre : Technology & Engineering
Kind : eBook
Book Rating : 559/5 ( reviews)

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Book Synopsis Broadband Communications via High Altitude Platforms by : David Grace

Download or read book Broadband Communications via High Altitude Platforms written by David Grace. This book was released on 2011-06-20. Available in PDF, EPUB and Kindle. Book excerpt: 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. 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

Optimization Methods for User Admissions and Radio Resource Allocation for Multicasting over High Altitude Platforms

2022-09-01 Technology & Engineering
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Release : 2022-09-01
Genre : Technology & Engineering
Kind : eBook
Book Rating : 900/5 ( reviews)

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Book Synopsis Optimization Methods for User Admissions and Radio Resource Allocation for Multicasting over High Altitude Platforms by : Ahmed Ibrahim

Download or read book Optimization Methods for User Admissions and Radio Resource Allocation for Multicasting over High Altitude Platforms written by Ahmed Ibrahim. This book was released on 2022-09-01. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the issue of optimizing radio resource allocation (RRA) and user admission control (AC) for multiple multicasting sessions on a single high altitude platform (HAP) with multiple antennas on-board. HAPs are quasi-stationary aerial platforms that carry a wireless communications payload to provide wireless communications and broadband services. They are meant to be located in the stratosphere layer of the atmosphere at altitudes in the range 17-22 km and have the ability to fly on demand to temporarily or permanently serve regions with unavailable telecommunications infrastructure. An important requirement that the book focusses on is the development of an efficient and effective method for resource allocation and user admissions for HAPs, especially when it comes to multicasting. Power, frequency, space (antennas selection) and time (scheduling) are the resources considered in the problem over an orthogonal frequency division multiple access (OFDMA) HAP system.Due to the strong dependence of the total number of users that could join different multicast groups, on the possible ways we may allocate resources to these groups, it is of significant importance to consider a joint user to session assignments and RRA across the groups. From the service provider's point of view, it would be in its best interest to be able to admit as many higher priority users as possible, while satisfying their quality of service requirements. High priority users could be users subscribed in and paying higher for a service plan that gives them preference of admittance to receive more multicast transmissions, compared to those paying for a lower service plan. Also, the user who tries to join multiple multicast groups (i.e. receive more than one multicast transmission), would have preferences for which one he would favor to receive if resources are not enough to satisfy the QoS requirements.Technical topics discussed in the book include: • Overview on High Altitude Platforms, their different types and the recent works in this area Radio Resource Allocation and User Admission Control in HAPs  Multicasting in a Single HAP System: System Model and Mathematical Formulation  Optimization schemes that are designed to enhance the performance of a branch and bound technique by taking into account special mathematical structure in the problem formulation

Fourth-Generation Wireless Networks: Applications and Innovations

2009-12-31 Business & Economics
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Release : 2009-12-31
Genre : Business & Economics
Kind : eBook
Book Rating : 752/5 ( reviews)

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Book Synopsis Fourth-Generation Wireless Networks: Applications and Innovations by : Adibi, Sasan

Download or read book Fourth-Generation Wireless Networks: Applications and Innovations written by Adibi, Sasan. This book was released on 2009-12-31. Available in PDF, EPUB and Kindle. Book excerpt: Fourth-Generation Wireless Networks: Applications and Innovations presents a comprehensive collection of recent findings in access technologies useful in the architecture of wireless networks.

The Evolution of Untethered Communications

1998-01-01 Technology & Engineering
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Release : 1998-01-01
Genre : Technology & Engineering
Kind : eBook
Book Rating : 466/5 ( reviews)

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Book Synopsis The Evolution of Untethered Communications by : National Research Council

Download or read book The Evolution of Untethered Communications written by National Research Council. This book was released on 1998-01-01. Available in PDF, EPUB and Kindle. Book excerpt: In response to a request from the Defense Advanced Research Projects Agency, the committee studied a range of issues to help identify what strategies the Department of Defense might follow to meet its need for flexible, rapidly deployable communications systems. Taking into account the military's particular requirements for security, interoperability, and other capabilities as well as the extent to which commercial technology development can be expected to support these and related needs, the book recommends systems and component research as well as organizational changes to help the DOD field state-of-the-art, cost-effective untethered communications systems. In addition to advising DARPA on where its investment in information technology for mobile wireless communications systems can have the greatest impact, the book explores the evolution of wireless technology, the often fruitful synergy between commercial and military research and development efforts, and the technical challenges still to be overcome in making the dream of "anytime, anywhere" communications a reality.

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