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Introduction to Wireless Digital Communication: A Signal Processing Perspective, First Edition by Robert W. Heath Jr.

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Chapter 1. Introduction

1.1 Introduction to Wireless Communication

During the last 100 years, wireless communication has invaded every aspect of our lives. Wireless communication, though, has existed for much longer than the wire it is replacing. Speech is a prehistoric example of a wireless system, though it is predated by gestures such as beating on one’s chest to display authority (still common with gorillas). Sadly, the distance over which speech is effective is limited because of the constraints of human acoustic power and the natural reduction in power as a function of distance. Early attempts at engineering a wireless communication system include smoke signals, torch signals, signal flares, and drums. One of the more successful of these ...

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