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State-of-the-art in commercial wireless communications. Prof. Malathi Veeraraghavan Elec. & Comp. Engg. Dept/CATT Polytechnic University mv@poly.edu. EL604: Wireless & Mobile Networking. Types of wireless networks. Cellular telephony (high-tier) Cordless telephony (low-tier)

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state of the art in commercial wireless communications
State-of-the-art in commercial wireless communications

Prof. Malathi Veeraraghavan

Elec. & Comp. Engg. Dept/CATT

Polytechnic University

mv@poly.edu

EL604: Wireless & Mobile Networking

types of wireless networks
Types of wireless networks
  • Cellular telephony (high-tier)
  • Cordless telephony (low-tier)
  • Wireless data
  • Paging
  • Specialized Mobile Radio (SMR)
  • Mobile satellite
  • 3G wireless
types of cellular telephony networks
Types of cellular telephony networks
  • Cellular telephony
    • Analog:
      • Advanced Mobile Phone Service (AMPS): FDMA
    • Digital:
      • Global System for Mobile (GSM) communications
        • TDMA based system used in Europe and many parts of the world
      • North American TDMA (NA-TDMA): IS-136
        • also referred to as Digital AMPS, American Digital Cellular (ADC)
      • Code Division Multiple Access (CDMA): IS-95
types of cordless systems
Types of cordless systems
  • CT2: Cordless Telephone, Second generation
    • European cordless sytem (since 1989)
  • DECT: Digital European Cordless System
    • Wireless PBX system
  • PHS: Personal Handyphone System
    • Popular system in Japan
types of wireless data systems
Types of wireless data systems
  • Wireless LAN
    • IEEE 802.11
    • ETSI HiperLAN
    • Unlicensed band called Industrial, Scientific and Medical (ISM) band
      • US FCC: 902-928Mhz, 2400 to 2483.5 Mhz, and 5725 to 5850 Mhz
  • Proprietary systems:
    • RAM Mobile Data
    • Advanced Radio Data Information Systems (ARDIS)
  • Cellular systems based wireless data access
    • CDPD (Cellular Digital Packet Data)
    • GPRS (GSM Packet Radio Service)
    • GSM and IS-136 circuit-switched data services
    • EDGE: Enhanced Data Rate for GSM Evolution