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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. Cellular telephony (high-tier) Cordless telephony (low-tier)

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State-of-the-art in commercial wireless communications

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  1. 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

  2. Types of wireless networks • Cellular telephony (high-tier) • Cordless telephony (low-tier) • Wireless data • Paging • Specialized Mobile Radio (SMR) • Mobile satellite • 3G wireless

  3. 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

  4. 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

  5. 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

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