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OFDM For Next Generation Mobile Wireless Internet

OFDM For Next Generation Mobile Wireless Internet. Rajiv Laroia CTO, Flarion Technologies. Anywhere anytime Internet connectivity (WAN) Typically over licensed spectrum Seamless extension of the Internet: end-to-end IP Support for voice and broadband data Provide QoS (Quality of Service)

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OFDM For Next Generation Mobile Wireless Internet

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  1. OFDM For Next GenerationMobile Wireless Internet Rajiv Laroia CTO, Flarion Technologies

  2. Anywhere anytime Internet connectivity (WAN) Typically over licensed spectrum Seamless extension of the Internet: end-to-end IP Support for voice and broadband data Provide QoS (Quality of Service) Affordable to end users What is Mobile Wireless Internet?

  3. Is OFDM Technology the Answer? Is 2.5/3G the Answer? United States --- CDMA 2000 Europe --- GPRS (TDMA) / UMTS (W-CDMA) • Circuit switched approach, complex network • Not seamless, Internet protocols don’t work • Circuit voice, packet data • No interactive data support, no QoS support • Expensive to end users

  4. OFDM Based Wireless TechnologyThe Right Answer Flarion Technologies has developed flash-OFDM™, a new packet data air-interface technology for mobile wireless Internet.

  5. flash-OFDMNetwork Architecture Public Internet Gateway Gateway PSTN Operator’s IP Network Base Stations Cellular Air Interface User Terminals End-to-End IP

  6. Packet data systems • Create fat pipe (physical layer) • Share pipe efficiently between users (MAC layer) • Create reliable links for data (link layer) • Send packet data over links (higher layers) flash-OFDM Air-Interface Advantage • Circuit switched systems • Create pipes (physical layer)

  7. flash-OFDM Physical Layer Advantage • Downlink & Uplink based on OFDM • Orthogonal --- TDMA benefits • Spread Spectrum --- CDMA benefits Tones Fat Pipe Fast Hopped - Spread Spectrum 1/T T sym Time

  8. 01 flash-OFDM MAC/Link Layer Advantage • OFDM granular resource partition • No overhead control messaging • Data as frames Data Frame Tones 1/T T sym Time

  9. QoS flash-OFDM MAC/Link Layer Advantage • Fast retransmission over airlink • Few millisecond retransmission loop time • Supports interactive applications • Uplink transmission requests • No contention based access • Uplink/downlink data frames scheduled Interactive Data

  10. flash-OFDM Higher Layer Advantage Better User Experience • Reliable link • Far fewer end-to-end retransmissions • Low delay • Efficient transport layer (TCP/IP) • Higher burst rates meaningful • Interactive applications supported (VoIP) • Mobile IP for hand-off • True make-before-break with no soft-handoff • IP to the RadioRouter™ • Reliable seamless handoffs

  11. flash-OFDM System Advantages • Transmit antenna and multi-user diversity • Autonomous RadioRouters™ • No common timing reference (no GPS) • No need for frequency or code planning • No knowledge of neighboring RadioRouters™ • Scalable, flexible architecture • Lower cost: • System planning • System deployment • Maintenance Highest bits/Hz/$

  12. Make The Internet Move

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