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Information Theory, Coding and Cryptography by Mandal, Nilotpal Manna, Arijit Saha

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Chapter 2

Information Theory

2.1  INTRODUCTION

It is well-known that the performance of any communication system is determined by the available signal power, the presence of undesirable background noise, and limited bandwidth. Naturally, the questions that come to our mind are whether there is any ideal system that can reliably send messages over a communication channel with all its inherent physical limitations and how the message should be represented for reliable transmission over the channel. Recognizing the fact, Claude Shannon developed a completely new theory of communication in 1948 which he called A Mathematical Theory of Communication in which he established the basic theoretical bounds on the performances of communication systems. ...

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