Saturday, November 17, 2012

The history of mobile Part 2


The history of mobile : part two








Hello fellow :

To complete our talk about the history of mobile and we started from generation zero (G 0) .
Do you think that the first generation (G1) is the first ?
No dear you have to think again .



According to titles makers the (G0) had the priority in both of USA and Canada , that was the first seed that started this maze of cell phones .
In that time the extent of the radio wave for these phones was very limited that caused the fast busy of the net , plus the sound overlap was conceivable that caused an eloquent noise thus possible weak signal from the tower .

The cure for all this problems was impossible in that time under the possible technique used then yet it's required change everything and rise to higher frequencies rather than the used one , in another meaning ( Simplest costs ) .

The funny thing about that is the supporting phone for this technique did not classified under cell phones because it's as soon as reserve a radio frequency it cannot change during the phone call that matter make restriction on the free move of the user in addition to the used system in that time had a little capacity of output ( power ) .

Adopted the first generation of systems communications analog cellular technology and designed to carry voice communications to network user .
But the first call from a mobile phone that supports the first generation dating back to April 1973.

The first generation devices were all operating systems, analog  in a telephone where the sound is the main course .

Among the criteria used in this generation was standard ( MTV ) , which was used by the Scandinavian countries and the countries of Eastern Europe, while the United States used a system called ( AMBC ) and so varied names applications in countries around the world such public in this generation use for frequencies in the space between the 800 Megahertz  and 900 Megahertz .

Nokia made the first mobile phone in 1982 and was named Nokia Mubera senator ... And was intended for use in cars.

Like its predecessor suffered generation mobile network the first time, most recently of its limited capacity and poor sound quality and easy to eavesdrop on calls and difficult to navigate the phone from one tower to another without losing the call

This technique did not give any room for data transfer and exchange between mobile phones that were suffering from their large size and slow operation and the limited ability to handle data opened the way for the second generation of mobile communication networks in the early nineties


You an example of a mobile device from the first generation, a type Motorola and was named X Daynatak 8000x and the price was $ 4,000 and was working half an hour before having to recharge


The following standards and most successful months in that period:



• Advanced Mobile Phone Service (AMPS)

This standard was used in 1984 in the United States and some other countries.


• Total Access Communication System (TACS)

This standard was developed in Britain in order to improve the standard AMPS and placed in service in 1985.


• Nordic Mobile Telephone (NMT)

This standard was the first cellular mobile communication system where European use in Denmark, Norway, Sweden and other Scandinavian countries.

The limited absorptive capacity of these systems have made them face difficulties with the rapid growth of the number of subscribers. The solution was to overcome this limitation is to move to a digital system Digital System instead of the analog system Analog System user at the time.

For the rest of the interview . . . . to be continue in the third part of the history of mobile.
   

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