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4G Networks

4G Networks. Presentation for Technicians and IT managers. 4 th Generation Network. At the end of this presentation: You will be able to describe the advantages of a 4G network You will be acquainted with the enabling technologies of 4G networks. Basics – What is a cellular network.

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4G Networks

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  1. 4G Networks Presentation for Technicians and IT managers

  2. 4th Generation Network At the end of this presentation: • You will be able to describe the advantages of a 4G network • You will be acquainted with the enabling technologies of 4G networks

  3. Basics – What is a cellular network • Radio Telephone • Transmitters and receivers (antennas) • A switch Switch Caller Receiver

  4. Network Generations

  5. Data download – 5 MB 1G+2G 19kbps 3G 7.2Mbps 4G 100Mbps

  6. Broadcast Access Technologies Data is broadcasted in various ways; • Frequency Division Multiple Access(FDMA) • Time Division Multiple Access(TDMA) • Code Division Multiple Access(CDMA) • Orthogonal Frequency Division Multiplexing(OFDM)

  7. Frequency Division Multiple Access FDMA • Analog • One frequency per user t

  8. Time Division Multiple Access TDMA • Uses all the frequencies • One frequency per time slot t

  9. Code Division Multiple Access CDMA • Uses all available frequencies • Unique ID for each call • Bandwidth efficient t

  10. Orthogonal Frequency Division Multiplexing OFDM • High data rates • IP based • Less interference t

  11. Fifth Generation • Higher data rates – GIGA BYTES • Ultra bands • Synchronization between networks

  12. Conclusion In the near future: • 4G networks will enable quick and efficient data transfer • Uses OFDM access technology • Will use IP based transceivers

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