Transcription of Introduction to Wireless Communication Systems
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Introduction to Wireless Communication Systems
1 CHAPTER1 Introduction to Wireless Communication SystemsThe ability to communicate with people on the move has evolved remarkably sinceGuglielmo Marconi first demonstrated radio s ability to provide continuous contact with shipssailing the English channel. That was in 1897, and since then new Wireless communicationsmethods and services have been enthusiastically adopted by people throughout the during the past ten years, the mobile radio communications industry has grown byorders of magnitude, fueled by digital and RF circuit fabrication improvements, new large-scalecircuit integration, and other miniaturization technologies which make portable radio equipmentsmaller, cheaper, and more reliable.
4 Chapter 1 • Introduction to Wireless Communication Systems 1.2 Mobile Radiotelephony in the U.S. In 1946, the first public mobile telephone service was introduced in twenty-five major American cities. Each system used a single, high-powered transmitter and large tower in order to cover dis-tances of over 50 km in a particular market.
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