The Comprehensive Guide to Wireless Technologies: Cellular, PCS, Paging, SMR and Satellite
This guide provides a roadmap to distinguish the technical means of communication in wireless applications.
TABLE OF CONTENTS The Comprehensive Guide to Wireless Technologies: Cellular, PCS, Paging, SMR and Satellite
Chapter 2: Wireless Applications
Alexander Graham Bell predicted that someday every city in the country would have a telephone
Wireless services such as mobile telephony, radio broadcast and television are commonplace throughout the world. The types of services vary dependent on the application. Wireless applications are a combination of the physical transmission of radio signals and rules or programs thaft coordinate the operation of the communication system. Wireless applications are created to produce benefits for their users. Successful applications include mobile telephones, land mobile radio, paging, wireless data, fixed wireless, remote control, point-to-point communications, broadcast radio and television.
Mobile Telephones
Mobile telephones connect people to the public switched telephone system (PSTN) or to other mobile telephones. Mobile telephone service includes cellular, PCS, specialized and enhanced mobile radio, air-to-ground, marine, and railroad telephone services.
The first mobile telephone system in the United States began in St. Louis, Missouri in 1946. By 1947, more than 25 cities in the United States had mobile telephone service available. The systems used a single high-power transmitter for the base station in the center of a metropolitan area. Coverage was provided for 50 miles or more from the transmitter. These initial systems used a human operator at the base station to manually connect the mobile user with the landline network. In most of these systems service was very poor because too many customers (called subscribers) shared each radio channel (called loading). It was not uncommon to have busy channels over 50% of the time. Despite this poor service, it...
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