Doppler Compensation for LEO Satellite Communication Systems

Doppler Compensation for LEO Satellite Communication Systems PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Doppler Compensation for LEO Satellite Communication Systems

Doppler Compensation for LEO Satellite Communication Systems PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description


Doppler Applications in LEO Satellite Communication Systems

Doppler Applications in LEO Satellite Communication Systems PDF Author: Irfan Ali
Publisher: Springer Science & Business Media
ISBN: 0306475464
Category : Technology & Engineering
Languages : en
Pages : 121

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Book Description
Doppler Applications in LEO Satellite Communication Systems develops and presents an important class of techniques useful in the construction of little Low Earth Orbit (LEO) satellite communication systems. It centers on the very significant Doppler shift that attends communications through a LEO satellite and shows how this phenomenon can be exploited for an unexpected benefit. The techniques taught in the book are expected to be particularly attractive to system engineers because ground-based transceivers must generally compensate for the large Doppler component and therefore the necessary receiver processing loops are often already in place and expensed. This volume starts with a recounting of the characteristics of a LEO satellite and its orbit. The 2nd chapter addresses the LEO orbital geometry and reviews the Doppler effect attending LEO communications. Chapter three is focused on the important task of estimating the Doppler at a ground terminal. Appropriate signal processing algorithms are reviewed. Chapter four is concerned with predicting LEO satellite visibility. Chapters five and six are, respectively, devoted to the use of the significant LEO Doppler as an aid in a new traffic flow control protocol and as an aid for effecting communications power control. The last chapter describes MATLAB® based analysis. Doppler Applications in LEO Satellite Communication Systems provides a thorough review of the LEO Doppler phenomenon.

Doppler Shift Compensation Method for Multi-User LEO Satellite Communication Uplink Over MmWave OFDMA Systems

Doppler Shift Compensation Method for Multi-User LEO Satellite Communication Uplink Over MmWave OFDMA Systems PDF Author: 傅郁婷
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Doppler Shift Applications and Estimation Techniques for Low Earth Orbit Satellite Communications Systems

Doppler Shift Applications and Estimation Techniques for Low Earth Orbit Satellite Communications Systems PDF Author: Christopher L. Messick
Publisher:
ISBN:
Category :
Languages : en
Pages : 208

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Doppler Shift Considerations in Naval Satellite Communication Systems Exploying Synchronous Satellites

Doppler Shift Considerations in Naval Satellite Communication Systems Exploying Synchronous Satellites PDF Author: W. E. Leavitt
Publisher:
ISBN:
Category :
Languages : en
Pages : 52

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Book Description
Possible doppler shifts due to motions of existing 'stationary' satellites are shown to be as large as 212 Hz/GHz. When the contribution due to ships motion and headway are added, total shifts of 2.5 kHz at X band are possible. To avoid a severe penalty in synchronization acquisition time in operating pseudonoise or frequency hop modems now considered for Naval satellite communication, some type of automatic doppler shift compensation is required. Several compensation methods are described that cannot obtain exact correction without undue complexity but can reduce the compensation error to less than 24 Hz/kHz of beacon carrier doppler shift with relatively simple techniques. Problems of phase noise due to phase lock loop bandwidths required to track changes in doppler shift and local oscillator spectral purity remain as prime problem areas. (Author).

Global Mobile Satellite Systems

Global Mobile Satellite Systems PDF Author: Peter A. Swan
Publisher: Springer Science & Business Media
ISBN: 9781402073847
Category : Computers
Languages : en
Pages : 194

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Book Description
Global Mobile Satellite Systems - A Systems Overview makes mobile satellite communications understandable for communication engineers, candidates for an engineering degree, technicians, managers, and other decision makers such as financiers and regulators. It provides a systems oriented top-level view of mobile satellite communications. In particular, it focuses on Global Mobile Satellite Systems (GMSS) including active programs such as Globalstar, IRIDIUM, ORBCOMM, ACeS, and Thuraya, or so-called the second generation mobile satellite systems class. The authors start with a brief description of three generations of satellite systems in use or planned in the telecommunications industry. Selected systems architectural trades are identified and explained to illustrate how various GMSS systems are formulated, developed and evaluated. It includes an examination of market demand trends, business trades, regulatory issues as well as technical considerations. Major issues are examined in trade study style to provide easy access to key information. Key systems drivers such as orbit trades between LEO's, MEO's, and GEO's, frequency, protocols, customer bases, and regulatory and engineering issues are included. This book should appeal to individuals interested in the basic elements of Global Mobile Satellite Systems.

Satellite Communications Systems

Satellite Communications Systems PDF Author: Gerard Maral
Publisher: John Wiley & Sons
ISBN: 1119382122
Category : Technology & Engineering
Languages : en
Pages : 1159

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Book Description
The updated 6th edition of the authoritative and comprehensive textbook to the field of satellite communications engineering The revised and updated sixth edition of Satellite Communications Systems contains information on the most recent advances related to satellite communications systems, technologies, network architectures and new requirements of services and applications. The authors – noted experts on the topic – cover the state-of-the-art satellite communication systems and technologies and examine the relevant topics concerning communication and network technologies, concepts, techniques and algorithms. New to this edition is information on internetworking with the broadband satellite systems, more intensive coverage of Ka band technologies, GEO high throughput satellite (HTS), LEO constellations and the potential to support the current new broadband Internet services as well as future developments for global information infrastructure. The authors offer details on digital communication systems and broadband networks in order to provide high-level researchers and professional engineers an authoritative reference. In addition, the book is designed in a user-friendly format. This important text: Puts the focus on satellite communications and networks as well as the related applications and services Provides an essential, comprehensive and authoritative updated guide to the topic Contains new topics including the space segment, ground, ground satellite control and network management, relevant terrestrial networks and more Includes helpful illustrations, tables and problems to enhance learning Offers a summary at the beginning of each chapter to help understand the concepts and principles discussed Written for research students studying or researching in the areas related to satellite communications systems and networks, the updated sixth edition of Satellite Communications Systems offers an essential guide to the most recent developments in the field of satellite communications engineering and references to international standards.

Proceeding of 2022 International Conference on Wireless Communications, Networking and Applications (WCNA 2022)

Proceeding of 2022 International Conference on Wireless Communications, Networking and Applications (WCNA 2022) PDF Author: Zhihong Qian
Publisher: Springer Nature
ISBN: 9819939518
Category : Technology & Engineering
Languages : en
Pages : 849

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Book Description
This proceedings includes original, unpublished, peer-reviewed research papers from the International Conference on Wireless Communications, Networking and Applications (WCNA2022), held in Wuhan, Hubei, China, from December 16 to 18, 2022. The topics covered include but are not limited to wireless communications, networking and applications. The papers showcased here share the latest findings on methodologies, algorithms and applications in communication and network, making the book a valuable asset for professors, researchers, engineers, and university students alike.

Satellite Communications and Navigation Systems

Satellite Communications and Navigation Systems PDF Author: Enrico Re
Publisher: Springer Science & Business Media
ISBN: 0387475249
Category : Technology & Engineering
Languages : en
Pages : 752

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Book Description
Satellite Communications and Navigation Systems publishes the proceedings of the 2006 Tyrrhenian International Workshop on Digital Communications. The book focuses on the integration of communication and navigation systems in satellites.

Laser Communication with Constellation Satellites, UAVs, HAPs and Balloons

Laser Communication with Constellation Satellites, UAVs, HAPs and Balloons PDF Author: Arun K. Majumdar
Publisher: Springer Nature
ISBN: 3031039726
Category : Technology & Engineering
Languages : en
Pages : 284

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Book Description
This book presents posits a solution to the current limitations in global connectivity by introducing a global laser/optical communication system using constellation satellites, UAVs, HAPs and Balloons. The author outlines how this will help to satisfy the tremendous increasing demand for data exchange and information between end-users worldwide including in remote locations. The book provides both fundamentals and the advanced technology development in establishing worldwide communication and global connectivity using, (I) All-Optical technology, and (ii) Laser/Optical Communication Constellation Satellites (of different types, sizes and at different orbits), UAVs, HAPs (High Altitude Platforms) and Balloons. The book discusses step-by-step methods to develop a satellite backbone in order to interconnect a number of ground nodes clustered within a few SD-WAN (software-defined networking) in a wide area network (WAN) around the world in order to provide a fully-meshed communication network. This book pertains to anyone in optical communications, telecommunications, and system engineers, as well as technical managers in the aerospace industry and the graduate students, and researchers in academia and research laboratory. Proposed a solution to the limitations in global connectivity through a global laser/optical communication system using constellation satellites, UAVs, HAPs and Balloons; Provides both fundamentals and the advanced technology development in establishing global communication connectivity using optical technology and communication constellation satellites; Includes in-depth coverage of the basics of laser/optical communication constellation satellites.