Active In SP
Joined: Sep 2010
12-10-2010, 12:19 PM
Dr. O P SAHOO
seminar report on gsm.doc (Size: 1.33 MB / Downloads: 58)
The Europeans realized in 1982 the Conference of European Posts and Telegraphs (CEPT) formed a study group called the Groupe Spécial Mobile (GSM) to study and develop a pan-European public land mobile system. GSM uses radio frequencies efficiently, and due to the digital radio path, the system tolerates more intercell disturbances. Speech is encrypted and subscriber information security is guaranteed.It is grong very fastly and moe than 120 million users are currently using GSM serevices.
At the beginning of the 1980s it was realised that the European countries were using many different, incompatible mobile phone systems. At the same time, the needs for telecommunication services were remarkably increased. Due to this, CEPT (Conférence Européenne des Postes et Télécommunications) founded a group to specify a common mobile system for Western Europe. This group was named “Groupe Spéciale Mobile” and the system name GSM arose.
This abbreviation has since been interpreted in other ways, but the most common expression nowadays is Global System for Mobile communications.
At the beginning of the 1990s, the lack of a common mobile system was seen to be a general, world-wide problem. For this reason the GSM system has now spread also to the Eastern European countries, Africa, Asia and Australia. The USA, South America in general and Japan had made a decision to adopt other types of mobile systems which are not compatible with GSM. However, in the USA the Personal Communication System (PCS) has been adopted which uses GSM technology with a few variations.