Cell phone system technologies
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  • 1. Cell Phone System Technologies
    By: Hui Hua Shen
    100655607
    April 8th, 2011
  • 2. Table of Contents
    i
  • 8. CDMA
    Stands for Code Division Multiple Access
    digitalcellular technology
    usesspread-spectrumtechniques
    better capacity for voice and data communications
    allowing more subscribers
    common platform on which 3G technologies are built1
    ii
  • 9.
    • Global System for Mobile Communications
    • 10. First launched in Finland in 1991
    • 11. Narrowband TDMA ( time division multiple access)
    • 12. Most widely used 2
    GSM
    iii
  • 13.
    • second-generation (2G) and third-generation (3G) 
    • 14. “spread-spectrum” technique
    • 15. 800-MHz and 1.9-GHz
    • 16. Telus/Bell/Public Mobile 3
    CDMA vs GSM
    • Second-generation (2G)
    • 17. Digital technology
    • 18. 900 MHz or 1800 MHz
    • 19. Rogers/Fido/Wind 3
    iv
  • 20. Generations
    • 0G – Pre-mobile phones
    • 21. 1G – First Generation
    • 22. 2G – Second Generation
    • 23. 3G – Third Generation
    • 24. 4G – Fourth Generation
    v
  • 25. 0G – Pre-mobile Phones
    • Radio telephone (in cars)
    • 26. Autoradiopuhelin (ARP) launched in 1971 in Finland
    4&5
    vi
  • 27. 1G – First Generation
    Released in the early 1980s
    Analog cellphone standards
    * NMT (Nordic Mobile Telephone)
    Eastern Europe & Russia
    * AMPS (Advanced Mobile Phone System)
    United States4 & 5
    vii
  • 28. Launch in 1991 in Finland
    Digital transmission
    digital voice call itself
    basic ancillary data (time & date)
    SMS messaging
    2G standards:
    GSM (TDMA – based), from Europe but used worldwide
    IDEN (TDMA – based), Nextel (United States) & Telus Mobility (Canada)4 & 5
    2G – Second Generation
    viii
  • 29. 3G – Third Generation
    Launch in 2001 in Japan by NTT DoCoMo
    Allows broadband-speed access to the internet and email
    Video telephony
    View television programs
    4 & 5
    ix
  • 30. First launched in 2008
    a wireless access technology
    - High-speed mobile wireless access (10 Mbits/s and up) Wi-fi
    - Pervasive networks
    connected to several wireless access technologies
    (Wi-fi, UMTS, EDGE)
    4 & 5
    4G – Fourth Generation
    x
  • 31.
    • Cell phone becomes the most important communication devices in our life.
    • 32. Most people can not live without cell phones.
    • 33. There are different features and functions for all cell phone generations.
    Conclusion
  • 34. References
    http://www.webopedia.com/TERM/C/CDMA.html
    http://www.webopedia.com/TERM/G/GSM.html
    http://www.cellphones.ca/cell-plans/carriers/
    http://funsms.net/mobile_phone_generations.htm
    http://www.actewagl.com.au/education/communications/MobilePhones/DevelopmentOfMobiles/MobileGenerations.aspx
    Images:
    http://farm1.static.flickr.com/49/118885175_bcf6c34125_o.jpg
    http://www.cellular.co.za/cdma.htm
    http://androidheadlines.com/wp-content/uploads/2010/11/gsmmapworldtimezone-600x293.gif
    http://www.learntelecom.com/telephony/gsm/gsm-vs-cdma
    http://www.w-cellphones.com/wp-content/uploads/2010/04/timeline-of-cell-phones.gif
    http://www.actewagl.com.au/education/_lib/images/Communications/MobilePhones/Mobile05%20-%20First%20radio%20telephone%201924.jpg
    http://www.geekosystem.com/wp-content/uploads/2010/03/20090522175136558-220x308.jpg
    http://static02.mediaite.com/geekosystem/uploads/2010/03/nokia3310.jpeg
    http://3.bp.blogspot.com/_0arosa8qIkc/SakNlSamqTI/AAAAAAAADq8/GHrKbywrwGc/s400/mobile-phones.jpg
    http://www.worldphoto360.com/wp-content/uploads/2010/07/cell-phone_deals.jpg
  • 35. Thank you!
    Are there any questions?