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Global System for Mobiles (GSM)
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Vikram
May 17, 2011
Technology
1
72
Global System for Mobiles (GSM)
A very brief description of mobile communications and GSM.
Vikram
May 17, 2011
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Transcript
Mobile Communication
Evolution of Mobile Communication 1st Generation Dual Band communications 450/500
MHz during 1964. Features: Wireless Voice Transmission
2nd Generation Known as GSM First used in Finland in
1991 Uses Frequency Band: 900/1800 MHz Features: Digital Voice communication SMS services Voice Conferencing
2.5th Generation Enhancement of GSM to GPRS in `97 GPRS:
General Packet Radio Services Higher data transmission rate. Features: MMS Internet Access
2.75th Generation EDGE: Enhanced Data Rates for GSM Evolution in`99
3 GPRS Bands used simultaneously Features: Speeds up to 384 Kbps Full internet access on mobiles Emergency Number System
3rd Generation Launched in 2001 Band Usage: 2100 MHz Features:
Speeds up to 3.5 Mbps Video calling Live Streaming Live Gaming
3.5th Generation Enhancement to 3rd generation via HSDPA and
HSUPA. Speeds up to 7.2 Mbps Live Gaming
Future : The 4th Generation Speeds up to 5 Gbps
while moving at a speed of 100Km/h. Features: Live TV Ultra high speed internet access High Definition (HD) video streaming
Prepared by @Vikram_Tiwari