Electronic Communication Digital, Analog and Wireless

Electronic Communication Digital, Analog and Wireless
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Electronic Communication Digital, Analog and Wireless

ISBN: 9788174093134

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Preface With the widening of the communication systems in the last one decade or so, the world now has become like a global village. This has been facilitated by the rapid emergence of a whole set of new digital technologies, which have now made the analog systems of communication largely obsolete. This completely revised edition of the Book has sought to present the massive transition that has taken place from largely analog communication systems to all-encompassing digital systems. This has been done in two ways. Firstly, all the chapters in the earlier editions have been totally revised and updated making them technologically relevant to the current status of technologies being deployed. Secondly, sixteen new chapters dealing with digital communication theory and systems have been added. These are Electromagnetic Theory, Information Theory, Coding Theory, Semiconductor Microwave Devices, Pulse Communication, Pulse Code Modulation PCM , Optical Fibre Communication, Direct Consequence Spread Spectrum Technologies, Digital Telephony, Audio Engineering, Global Positioning System, Data Communication, Digital Satellite Communication, VSAT, Internet and Wireless Communication. These additions have made the book as the first ever comprehensive work on modern electronic communications. Other significant features of the Book are that it contains a large number of solved examples, and multiple-choice questions at the end of each chapter. The number of multiple-choice questions is more than 1000. This way, the Book hopes to meet the requirements of the students studying various telecommunication courses being taught at the engineering colleges in the country. The Book will be highly useful for the students preparing for UPSC Engineering Services Examination. This Book has been revised after consulting vast literature in the field of communication engineering. The authors acknowledge with the due courtesy the sources consulted in the preparation of this book. The authors are grateful to Shri Ravi Kashyap an alumni of IIT Delhi for his excellent help in proof reading of the manuscript. They are also thankful to Shri Pritam Negi for taking up the difficult task of computer typesetting the book over several revisions and proofs. The authors are also highly grateful for the highly spirited co-operation provided by Shri Romesh Chander Khanna and Shri Vineet Khanna and for the very useful suggestions by them during the course of preparation of this book. Finally, the authors will be highly obliged for any positive criticisms and suggestions from the readers for improving this book with an object to serve the student community in better way. Authors
Contents 1. Introduction to Communication Systems 1.1 Introduction 1.2 Communication Systems 1.2.1 Information 1.2.2 Transmitter 1.2.3 Channel 1.2.4 Receiver 1.3 Amplifiers 1.4 Modulation 1.5 Need for Modulation 1.6 Contaminations

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