3-G MOBILE TECHNOLOGY

What is 3G Mobile Technology

     3G mobile technology is an edge over telephone and internet. Different 2G technologies are now gather and utilized at one place to give the mobile technology a new dimension and these called 3G mobile technologies. Combination of all the quality features of different 2G versions brings excellent one best device with high data transfer rate, maximum width of the frequency band, WiFi facility, and first-rate roaming. 3G mobile Technology is the combination of earthly and heavenly features.

     Let see the technologies used in 3g mobile and their properties one by one.

CDMA 2000 (3G Mobile Technology)

Third Generation Partnership Project 2 (TGPP 2) introduced this CDMA 2000. Five countries Telecommunication standards organization did joint venture to design this technology. This technology advancement was already entertained by many other systems and serving as 3G Mobile Technology.
Properties:

• Able to use verbal and textual service concurrently.
  
• High data transfer rate approximately 200 kbps.
  
• CDMA 2000 provides wireless facility.
  

W-CDMA (UMTS) - (3G Mobile Technology)

W-CDMA stands for Wideband Code Division Multiple Access is a third generation’s important feature based on radio transmission system. It is designed by ETSI Alpha organization. It is quite challenging to apply it because of its complex features and versatile properties.
Properties:

• Make hybrid with IS-95 (digital cellular standard) component of 2G technology responsible for the high frequency.
  
• It is able to download 14.7 Mb/s.
  
• Provide wideband known as Spread Spectrum in addition to code division multiple accesses.
  
• Improved audio-visual effects.
  
  

  D-SCDMA (3G Mobile Technology)
  

  Time-Division Synchronous Code Division Multiple Access inherited and hybrid from 2G technologies. This 3G is a step forward as compared to 2G because in 2G either CDMA or TDMA is used to achieve the relevant property. But in 3G both these technologies have been combined to take benefit from both.
• TDMA supports multiple access approach and its time division multiple access enables uplink and downlink Transmission.
  
• TDMA support GSM enabling sms service.
  
• It helps in multiplexing the FDMA technology with TDMA and CDMA allot whole frequency band to a specific service and transmit signals converts into digital data to the all the users.
  

Some other 3G mobile technologies utilized by the 3G mobiles are as follows;

• Video technology for video calling or video conference. Here two cameras are used so that caller can see the other.
  
• Sim based technology with the 3G network connectivity.
  
• GPRS General Packet Radio Service where data is divided into chunks of information and transmit through radio signals.
  
• EDGE for enhanced data rate service.
  
• W-LAN is a standard for wireless facility through local area network service.
  
• Multimedia technology applications are the key feature for 3g mobile technology.
  
• IP connectivity is an additional feature for voice call or message and video call or video conference.