| Autor: |
Gatherer, Alan, Stetzler, Trudy, Auslander, Edgar |
| Předmět: |
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| Zdroj: |
Application of Programmable DSPs in Mobile Communications; 2002 1st Edition, p11-21, 11p |
| Abstrakt: |
The first commercial mobile telephone service in the U.S. was established in 1946 in St. Louis, Missouri. This pre-cellular system used a wide-area architecture with one transmitter covering 50 miles around a base station. The system was beset with severe capacity problems in 1976, Bell Mobile offered 12 channels for the entire metropolitan area of New York, serving 543 customers, with 3700 on a waiting list. The U.S. began cellular service in 1983 in Chicago with a single system called advanced mobile phone system. The market situation for the U.S. was more favorable than Europe as a single standard provided economies of scale without incompatibility problems. The European model became a disadvantage, pushing Europe to unify on a single digital pan-European standard in the early 1980s and deployed in 1992. Later, this spread far beyond Europe: Global System for Mobile telecommunications. |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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