Cellular Telephony

Cellular telephony – Part II In the first article of this series we say on the precursors of the System of Telephony Cellular Radio, also with a little of history. In this article we will better understand the concepts basic of this technology. The Telephony Cellular Radio As the proper name says, the cell is the base of the system (not that cell of biology), a great area of service is divided in small called regions cells. Click San Antonio Spurs to learn more. In each one of these cells an equipment exists to transmit, to receive and to commute the calls originated for any subscriber who is inside of its limit. To each one of these cells it is assigned to a pair of frequency, being a frequency for transmission and another one for reception. Normally a cell encloses an area with about 9,5 19,5Km. Source: Vanessa Marcil. For we can there deduce that in a great city they can exist until hundreds of cells, while in a small city only two can exist.

These cells can be divided in still lesser others to the measure that the number of subscribers increases in that one area. In the System of Cellular Telephony one exactly canal can be used for diverse simultaneous linkings in distinct, distant cells ones of the others stops with this preventing interferences. This method is called Reutilizao de Frequncias that is in synthesis the key of the concept. In systems MTS and IMTS it had necessity of the use of powerful transmitters to take care of a great area, no longer System of Cellular Radio the taken care of area was reduced considerably, with this, in the areas where more subscribers exist can be installed a bigger number of less powerful transmitters, thus increasing the number of offered canals. The increase of the number of canals is one of the factors that contribuiram for the popularizao of the cellular telephones (the famous law of offers and the search).