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Software Radio Enabling Dynamic Spectrum Management

Software Radio Enabling Dynamic Spectrum Management. Vanu, Inc. Background. History Founded September ‘98 Spin-off from MIT SpectrumWare project Building software radios since 1994 Core Strengths 7 year's experience implementing software radios Staff: 5 PhD’s, 20 engineers

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Software Radio Enabling Dynamic Spectrum Management

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  1. Software RadioEnabling Dynamic Spectrum Management

  2. Vanu, Inc. Background • History • Founded September ‘98 • Spin-off from MIT SpectrumWare project • Building software radios since 1994 • Core Strengths • 7 year's experience implementing software radios • Staff: 5 PhD’s, 20 engineers • Software engineering, waveform software, system design • Core Technology Developed • Technology is mature for: • infrastructure and public safety markets

  3. Outline • Where are we going ? • The future of wireless communications • Software radio is the enabling technology • Where are we now ? • Tremendous progress over the last 10 years • What are the next steps ?

  4. Hardware Radio Separate devices for different functions Any fix or upgrade needs a hardware change AMPS GSM TV Garage Door The Ideal Software Radio • Software Radio • One device for many functions • Upgrade through software change

  5. Software Radio + Remote Antennas • Extended Coverage • Shared Infrastructure • Better Spectrum Utilization • Future Proofing • Lower Capital Cost • New Revenue sources Fiber or cable backbone Software Radio Cluster

  6. Dynamic Spectrum Utilization

  7. Benefits • Better Spectrum Utilization • System optimized to current channel conditions, user requirements and network traffic • Dynamic Spectrum Optimization • Make spectrum a commodity • Should be able to sublicense portions as needed • Use is a function of demand, not regulation • Adapts to regional and time sensitive requirements • Enable priority access • Faster Technology Tracking • New services and signal processing are software upgrades • Leads to new revenue and even better spectrum utilization

  8. Outline • Where are we going ? • The future of wireless communications • Software radio is the enabling technology • Where are we now ? • Tremendous progress over the last 10 years • What are the next steps ?

  9. Evolution of Software Radio • Modal SDR • Software controls and configures the radio • ASIC or analog hardware Dual-mode cell phone

  10. Evolution of Software Radio • Modal SDR • Software controls and configures the radio • ASIC or analog hardware • Reconfigurable SDR • All signal processing reconfigurable • Significant use of FPGA or assembly code SpeakEasy AirNet Dual-mode cell phone

  11. Evolution of Software Radio • Modal SDR • Software controls and configures the radio • ASIC or analog hardware • Software Radio (SWR) • Takes advantage of Moore’s Law • Portable programs Vanu • Reconfigurable SDR • All signal processing reconfigurable • Significant use of FPGA or assembly code SpeakEasy AirNet Dual-mode cell phone

  12. Software Radio Phase Space A: HF STR-2000 B: COTS Handset C: SWR Cell Site D: SPEAKeasy II V: Vanu, Inc. Software Radio X: Ideal Software Radio Source: Mitola, Joseph. “Software Radio Architecture: A Mathematical Perspective”, IEEE JSAC, April 1999.

  13. State Of Software Radio • Technology is mature for infrastructure • Basestations • Public safety • Wireless LAN/MAN/last mile • Demonstrated capability at CTIA • Cellular Handsets are 3-5 years away • Power dissipation constraint • Applicable to lower battery like markets today • e.g. law enforcement, vehicular

  14. Outline • Where are we going ? • The future of wireless communications • Software radio is the enabling technology • Where are we now ? • Tremendous progress over the last 10 years • What are the next steps ?

  15. Next Steps • SDR Rulemaking is a great start • Spectrum licensing needs to be less static • SDR device approval needs to expand to include over the air upgrades

  16. Dynamic Spectrum • Secondary markets would be a good first step • Allows some ability to adapt • Long term goal: Commodity spectrum market • Computerized market maker • Authorized traders • Need to meet non-interference regualtions • Support smaller geographic blocks • Real-time bids • Acquire spectrum for the region and time required

  17. SDR Waveform Downloads • Essential to realize the benefits • Spectrum efficiency • Technology tracking • Platform certification • Insure no harmful interference, even with malicious software • Radiate under power limitations • Within allowed bandwidth • Cannot theoretically guarantee correct functionality • Can guarantee that it does NOT do certain harmful things

  18. Summary • Software Radio will enable • Better spectrum utilization • Faster technology tracking • New markets and uses for wireless • Tremendous progress in the last decade • Technology ready for infrastructure today • Handsets coming fast • Regulation • Off to a good start with SDR rule making • Next steps: • More dynamic spectrum allocation • Downloadable waveform upgrades

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