1. 1 Software Radio Enabling Dynamic Spectrum Management

2. © 2002January 20022 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. © 2002January 20023 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. © 2002January 20024 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. © 2002January 20025 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. © 2002January 20026 Dynamic Spectrum Utilization

7. © 2002January 20027 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. © 2002January 20028 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. © 2002January 20029 Evolution of Software Radio Dual-mode cell phone Modal SDR –Software controls and configures the radio –ASIC or analog hardware

10. © 2002January 200210 Evolution of Software Radio Dual-mode cell phone 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

11. © 2002January 200211 Evolution of Software Radio Dual-mode cell phone 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 Software Radio (SWR) –Takes advantage of Moore’s Law –Portable programs Vanu

12. © 2002January 200212 Source: Mitola, Joseph. “Software Radio Architecture: A Mathematical Perspective”, IEEE JSAC, April 1999. A: HF STR-2000 B: COTS Handset C: SWR Cell Site D: SPEAKeasy II V: Vanu, Inc. Software Radio X: Ideal Software Radio Software Radio Phase Space

13. © 2002January 200213 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. © 2002January 200214 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. © 2002January 200215 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. © 2002January 200216 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. © 2002January 200217 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. © 2002January 200218 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