Monday, June 18, 2012

Mobile Communications

At first wireless communication technologies can be developed with the goal of a mobile phone (mobile) Just have a voice-only services.
Mobile devices communicate via Base Transmission Station (BTS) will then be connected to the phone number designated.

a) 1G  (first generation)
    Analog
    AMPS (Advanced Mobile Phone System)
    Voice services
b) 2G (second generation)
    Digital
    GSM (Global Systems for Mobile Communications)
    CDMA (Code Division Multiple Access)
    SMS ,EMS, MMS

 c) 2G+ (2.5 G)
     GPRS(General Packet Radio Service)
     Internet services
 d) 3G (third generation)
      Compatible with 2G,2G+
      Data Transfer rate 2Mbps
Local communication between devices
- Bluetooth
- IrDA (Infra red Data Association)


Mobile Communication System Components

 




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