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Radio Propagation for Modern Wireless Systems by Henry L. Bertoni

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Chapter 1The Cellular Concept and the Need for Propagation Prediction

The introduction of cellular mobile radio (CMR) telephone systems in the early 1980s marked an important turning point in the application of radio technology in communications. Prior to that time, the commercial use of radio spectrum was dominated by broadcast radio and television, although other applications, such as fleet dispatch, walkie-talkies, and citizens band (CB) radio were of growing importance. Broadcast systems are intended to cover an entire metropolitan area from a single transmitter whose signal is in an assigned frequency channel. As a result, the system design goal is to achieve the largest possible coverage area in which the received power is sufficiently ...

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