Global System for Mobile Communications
GSM (Global System for Mobile Communications) is a Digital Wireless Technology used for cell phone in the world that is, it is a cellular technology used for transmitting mobile voice and data services. It was developed by the European companies.
Features Of GSM
- It is 2G Technology
GSM is a circuit-switched technology
Uses GMSK [Gaussian Minimum Shift Keying] Modulation
- It supports FDMA & TDMA
- It uses SIM card so u can easily switch your SIM card between phones
- International roaming is easier on a GSM network
- In GSM every user requires a separate frequency channel for communication
- GSM accounts for 80% of total mobile phone technologies market
- The Frequency Band(range) in GSM
The frequency of the carrier is very important, because it determines the Size, power, efficiency of your mobile phones.
Posted by Sadaf Dilshad Khan
on 20:35. Filed under
Digital Communication System
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