1. Technology for Mobile Broadband Bill Sullivan Managing Director, Mobile Broadband Systems Carlsbad, CA

2. Satellite Forum ViaSat Background VSAT Products Antenna Systems Consumer Broadband Government Products

3. Satellite Forum ViaSat Broadband in the Sky n ConneXion by Boeing  Airborne transceivers  Ground transceivers n SKYLink by ARINC Direct  Airborne integrated terminals including antennas  Complete ground infrastructure  7 x 24 network ops

4. Satellite Forum The Satellite Mobile Broadband Problem Complex Trade-off Satellite Bandwidth and Power Waveform Design Network Management Antenna Size & Complexity Regulatory

5. Satellite Forum Key Technologies for Satellite Mobile Broadband n CDMA spread spectrum waveforms  THE enabler of mobile broadband on FSS satellites n Innovative antenna apertures n Antenna pointing & tracking n Aggressive error correction codes n Bandwidth recovery techniques n Outage mitigation features n Mobile IP networking

6. Satellite Forum TDMA/FDMA CDMA Waveform.5 Degree CDMA = Mobile at Ku-Band n Standard Ku antennas have narrow beamwidths n Small antennas needed for mobile systems too wide n CDMA waveform reduces adjacent satellite interference FDMA/TDMA Waveform 6 Degree Effective CDMA Spread Spectrum Waveform FDMA/TDMA Waveform 6 Degree

7. Satellite Forum Antenna Subsystems KVH n Antenna aperture  Low profile  Small footprint n Pointing / tracking  Accuracy vs. cost  Smaller antennas can meet regulatory limits with less accuracy n Integrated design is key!!  Waveform  Network management ViaSat’s CDMA waveform & network management enable these very small antennas

8. Satellite Forum Waveform Design n Aggressive forward error correcting codes  Turbo, PCCC, SCCC & others n Spread spectrum n Outage mitigation  Burst CRMA  Expanded interleaving  HTTP caching  Alternate media routing

9. Satellite Forum PCMA Hub Cancellation Gateway Downlink ViewRemote Downlink View  Gateway transmits Uplink signal  Gateway cancels its received signal  Subscriber Terminal transmits a return link Return link power too low to interfere with Outbound Return link above residual of cancelled Outbound Uplink  Gateway receives inbound return links from remotes

10. Satellite Forum Mobile Broadband Future?? n Smaller & smaller antennas  Innovative system architectures n Other frequency bands?  C-band for non-maritime?  Ka-band?? n Press to reduce cost  Cheaper bandwidth  Cheaper equipment

11. Satellite Forum Summary n Major shift in mobile satellite communications towards true broadband  Mainstay low-rate heritage systems (e.g., Inmarsat) will remain and evolve  New Ku systems moving rapidly to market n ViaSat will remain a key player  Innovative system architectures  Aggressive new products