Seminar on 4G wireless technology

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4G wireless technology
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What is 4G?

• Abbreviation of fourth generation is wireless
  technology
• It will provide a comprehensive IP solution where
  
• voice , data and multimedia can be given to user
  on an
• anytime , anywhere basis.
• It includes several types of broadband wireless
• communication system access including cellular
• telephone system.

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History of 4G technology
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Why 4G is required?

• Due to substantial growth in overall number of
• subscribers.
• Due to massive demand of new services like data
  , audio , image or video .

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Features of 4G TECHNOLOGY

• Support for multimedia services like
  teleconferencing and wireless internet.
• Wider bandwidths and higher bitrates.
• Entirely packet-switched network.
• Global mobility and service portability.
• Support for previous wireless technologies.
• High internet speed.
• Tight network security.

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Technology used in 4G

• OFDM
• UWB
• Smart antennas
• IPv6

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Application

• In traffic control.
• Multimedia video services
• Telemedicine.
• Crisis Management
• Virtual Navigation

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Limitations

• Interoperability between the signaling techniques
  that are planned for use in 4G.
• Cost is another factor that could hamper the
  progress of 4G technology.The equipment required
  to implement the next-generation network are
  still very expensive.
• A Key challenge facing deployment of 4G
  technologies is how to make the network
  architectures compatible with each other. This
  was one of the unmet goals of 3G.
• As regards the operating area, rural areas and
  many buildings in metropolitan areas are not
  being served well by existing wireless networks.

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Thank you