Chapter 7. Information Sources

Introduction

The ultimate purpose of any communication system is to facilitate information transfer between users. In most modern communication systems the information is digitally encoded, and so the ability to transfer bits between users is a prerequisite to the transfer of information. Up to this point we have focused on the system considerations necessary to establish this transfer of bits between users. In Chapters 2 and 3 we explored the factors a systems engineer would take into account to ensure that enough carrier power reaches a receiver to produce an adequate signal-to-noise ratio. The signal-to-noise ratio must be maintained even in the presence of shadowing and multipath reception. In Chapter 5 we examined ...

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