Satellite Communications Systems Design Principles by M. Richharia
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Satellite Communications Systems Design Principles by M. Richharia

The rapid development of electronics and its engineering applications ensures that new topics are always competing for a place in university and polytechnic courses. But it is often difficult for lecturers to find suitable books for recommendation to students, particularly when a topic is covered by a short lecture module, or as an 'option'. Macmillan New Electronics offers introductions to advanced topics. The level is generally that of second and subsequent years of undergraduate courses in electronic and electrical engineering, computer science and physics. Some of the authors will paint with a broad brush; others will concentrate on a narrower topic, and cover it in greater detail.

But in all cases the titles in the Series will provide a sound basis for further reading in the specialist literature, and an up-to-date appreciation of practical applications and likely trends. The level, scope and approach of the Series should also appeal to practising engineers and scientists encountering an area of electronics for the first time, or needing a rapid and authoritative update. Satellite communication systems are now an integral part of most major wide-area telecommunication networks throughout the world. The purpose of this book is to introduce the various elements of a satellite communication system and to develop the principles of system design. The understanding of a complete satellite system requires coverage of a broad range of topics.

An attempt has been made to treat each topic at a system level in sufficient depth so as to develop a sound understanding of each element and its relationship to the overall system. Problems and examples have been included to illustrate the applicability of the concepts introduced. The book consists of 11 chapters. The introductory chapter provides an overview of satellite communications, including a brief history. Chapter 2 discusses the fundamentals of satellite orbits, focusing mainly on the principal features of the geostationary orbit, currently the most commonly used orbit for satellite communications.

An appendix summarizes various useful orbit-related formulas. Chapter 3 develops a basic understanding of issues involved in selecting frequency for a given satellite communication system. Chapter 4 introduces essential topics such as antenna characteristics, the transmission equation and the effects of noise. The final section of the chapter ties together these concepts, forming the basis of the overall system design. Chapters 5 and 6 discuss, respectively, the topics of modulation and coding applied to satellite communications. The treatment is at a system level so as to assist a system designer in the selection of appropriate modulation and coding schemes for a given application. Chapter 7 characterizes various types of baseband signals commonly used in satellite communications.

A satellite is a common resource which must be shared efficiently by a large number of users. Chapter 8 discusses various techniques used for accessing a satellite. Chapters 9 and 10 describe the main sub-systems and outline issues related to the design of communication satellites and earth stations respectively. The concluding chapter of the book examines the likely future evolution in various areas of satellite communication system on the basis of current trends and the impact of other developments in telecommunications. The author expresses his gratitude to Professor B.G.

Evans of Surrey University for his encouragement, especially in the initial phases of the project. Thanks are also due to Mr Malcolm Stewart of The Macmillan Press and to Dr Paul Lynn, the series editor, for their continued support throughout.The author expresses appreciation to his wife Kalpana for her patience and support. Finally, it is a pleasure to acknowledge the enthusiastic support of my son Anshuman and daughter Meha. Anshuman's excellent assistance in preparing the typescript and illustrations are commendable.

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