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4G Cellular Systems

4G Cellular Systems. Michael Gloff. Contents. Mobile Radio Telephone Cellular Concept/ 1G 2G – 3G 3G – 4G 4G - Beyond. Mobile Radio Telephone Beginning. First public mobile phone – 1946 High powered FM base stations Limited service Half-duplex. Mobile Radio Telephone 1960’s.

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4G Cellular Systems

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  1. 4G Cellular Systems Michael Gloff

  2. Contents Mobile Radio Telephone Cellular Concept/ 1G 2G – 3G 3G – 4G 4G - Beyond

  3. Mobile Radio TelephoneBeginning First public mobile phone – 1946 High powered FM base stations Limited service Half-duplex

  4. Mobile Radio Telephone1960’s Full duplex Direct Dial Improved mobile radio system (IMTS) 30 kHz channel bandwidth Limited channels/Large coverage

  5. Mobile Radio Telephone1960’s

  6. Cellular Break up area into smaller ‘cells’ Adjacent cells use unique frequencies Frequency reuse Lower power

  7. Cellular

  8. 1G – AMPS – 1983 Advanced Mobile Phone System 50 MHz total bandwidth 30 kHz channels 832 channels Frequency reuse - 7

  9. 1G - AMPS

  10. 2G – 1990’s Digital voice D-AMPS GSM IS95 - CDMA

  11. 2.5G – Mid 1990’s • Data • Text Paging • Internet • Packet Switching • GSM – GPRS, EDGE • CDMA – IS95B

  12. 3G – 2000’s Landline quality voice Data rates up to 2Mbps Packet and circuit switched Internet interface

  13. 3G – 2000’s • CDMA2000 • 1XRTT • 1xEV (EVDO, EVDV) • 3XRTT • GSM – W-CDMA • CDMA Air interface • 5 MHz channels

  14. 3.5G – Mid 2000’s • W-CDMA HSPA • 14 Mbps • MIMO • HSPA+ • CDDMA2000 • EV-DO Rev A – 3 Mbps • EV-DO Rev B – 15 Mbps

  15. Pre 4G – 2010 Long term evolution (LTE) 700 MHz band – analog TV OFDMA 300 Mbps Multicast streams

  16. 4G - ? LTE Advanced 1 Gbps Scalable channel bandwidth Improved spectral efficiency

  17. Conclusion Mobile Radio Telephone CDMA / GSM 4G Future

  18. Questions? Questions? Questions? Questions? Questions? Questions? • Questions? Questions?

  19. THE END

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