1 Introduction

From the very first step in the field of telecommunications, every relevant development has brought about a change in people’s lifestyles. The introduction of fiber optics and of the digital mobile phone (the GSM) are examples in this regard.

Within a brief period of about 10 years, fiber optics have increased the capacity of commercial transmission systems from 0.5 to 1280 Gbit/s, creating an abundance of capacity on which the Internet is based.

The diffusion of GSM has transformed the telephone from a location-based communication to a mobile form of personal communication, completely changing the way in which people communicate.

Internet and GSM, among the other prominent developments in the field of telecommunications, have ...

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