1. SUIRG WiMax Test Results NSMA Meeting Washington, D.C. 20, 21 May 2008

2. Agenda SUIRG Brief Background SUIRG Programs SUIRG’s WiMax/FSS Test Activities SUIRG’s Future

3. SUIRG Background SUIRG’s Mission SUIRG is a not-for-profit international assembly of parties, within which members work towards the reduction of radio frequency interference (RFI) through pro- active programs and education.

4. Who Belongs Membership grown to 37 members from 20 countries Communication Satellite Operators Satellite Service Users Satellite Monitoring Equipment Vendors Other Organizations concerned with Interference Founding Members: Intelsat, PanAmSat, Inmarsat, NewSkies, QinetiQ, Glowlink Latest member GASCOM from Russia

5. Training & Certification Program Review & Certify Sat Ops Training Establish Certification Sat. Ops. DB Interference Signature & Resolution DB Interference Source Identifier Contact and location data embedded in data stream Advent Communications DVE4000 employs SUIRG’s specification Working with WBU/ISOG on industry standard inclusion of Carrier ID in the MPEG data stream as a standard operating practice by 2011. On-going Programs

6. Regulatory WG BWA/WiMax shared usage of FSS C-band Active participant in industry letters to multiple ITU members requesting non-approval at the WRC meeting Performed field testing of shared use of C-Band frequencies with WiMax equipment. Working with other organizations (i.e. GVF) on post-ITU recommendations. Many countries opted in to enable authorization of WiMAX systems. Initiative to use 14.0-14.5 GHz for Terrestrial Services On-going Programs

7. New users in C-band downlinks Future mobile phone networks (IMT Advanced, 4G, ….) Broadband Wireless Access (BWA), WiMax, FWA, …. Was considered by ITU Is currently being introduced country by country worldwide BWA or IMT in ANY part of “our” C-band downlink will have an impact on FSS reception in ALL of the band Band commonly used by FSS satellites Additional band (FSS, feeder links for MSS, …) 3.43.53.63.73.83.9 4.0 4.14.2 Std. C Extended C

8. 8 Circles of 150 km radius around earth stations Registered Earth Stations (Except TVROs) in Europe Operating to Satellites Within 3400-4200 MHz Impact of Protection of Earth Stations in Overlapping Frequency Bands

9. SUIRG WiMAX and C-Band FSS Compatibility Testing

10. Why: Provide additional quantifiable data for administrations and other interested organizations When: 1-10 October 2007 Where: Florida: subscriber testing (< 1Km) Maryland & Virginia: Hub testing (2-12 Km) SUIRG Field Testing

11. What was tested? Measure interference generated by WiMax Base Station (BS) transmissions into a satellite receiving station by measuring satellite channel C/N, I/N, BER and power levels at varying angles and distances to the 2.4 meter FSS antenna. SUIRG Field Testing

12. Typical Test Configuration

13. Procedure was verified and agreed upon by the following organizations: SUIRG: (Satellite Users Interference Reduction Group) WBU-ISOG: (World Broadcasting Union – Inter Satellite Operations Group) GVF: Global VSAT Forum WTA: World Teleport Association NAVSEA NSWCDD Q53 (US Navy) Test Program

14. Particular attention was on the following: Output level from the WIMAX transmitter. Distance of the WIMX transmitter from the Satellite antenna. Angle of WIMAX transmitter from Satellite antenna bore sight. LNB signal compression As required, testing was conducted using different transmit frequencies from the WIMAX transmitter. Test Program

15. Testing was done in 2 phases Phase 1 simulated a mobile WiMax subscriber unit operating within the immediate area of a FSS antenna system Phase 2 simulated a fixed WiMax Hub system with its antenna mounted 50 meters up on a water tower. Test Plan

16. Phase 1 Subscriber Unit Test Area

17. Phase1 Subscriber Test Set-up

18. Baseline Video signal

19. Measurement 2 & 2a Distance: 0.17 km Angle: AZ-95° WiMax power: +3 dBm I/N: +38 dB _____________________ WiMax power: +29 dBm I/N: >+ 45 dB

20. Measurement 9 Distance: 0.87 km Angle: AZ-118° WiMax power: +29 dBm I/N: +23 dB

21. Phase 2 Hub testing Tests were performed at 2 different remote FSS locations (Maryland and Virginia) Phase 2 Test Plan Testing required moving the 2.4 M FSS System unit around the test area via flat bed truck Following will provide the results from the greater distance location (12 km distance)

22. New Direct TV System for Truckers???

23. Phase 2 Typical Test Set-up Water TowerFSS Site #2

24. WiMax/FSS Compatibility Test Results WiMax vs. FSS Angle: 16° Distance: 2 km Video Carrier CF: 3515 MHz WiMax CF: 3510 MHz WiMax power: +25 dBm I/N: + 8 dB BER: <1x10-5 when WiMax @ 3515 MHz Phase 2 Measurement local

25. WiMax/FSS Compatibility Test Results WiMax vs. FSS Angle: 16° Distance: 12 km Video Carrier CF: 3515 MHz WiMax CF: 3510 MHz WiMax power: +29 dBm I/N: + 7 dB BER: <1x10-5 when WiMax @ 3515 MHz: Phase 2 Measurement long

26. Phase 2: Hub unit testing Tests were performed at 2 different remote FSS locations using an 120° directional WiMax antenna mounted on a water tower at around 50 meters to simulate a cell tower installation. Results identified problems within the test areas of significantly greater distances (12 km) away from the FSS antenna than Phase 1. Further distance testing identified significant problems at the max. (25 dBm) level and BER problems at the lower (3 dBm) level. The I/N level ranged from +33 to +9 dB and, as stated in Phase 1 test results, this level will increase for each unit in the area. Acceptable I/N level is -10dB. Phase 2 Test Results

27. Additional analysis was performed based on the results of this testing Based on pure line of sight propagation loss the distance between WiMax and FSS calculated to be 278km Based on actual test site terrain data calculated the distance to be around 50km Phase 2 Field Testing

28. The following slide identifies the locus of locations around the Phase 2 Virginia site where the I/N at an FSS earth station would not exceed -10 dB for more than 20% of the time. This data is based on the local wooded terrain where the test was performed Phase 2 Field Testing

29. Washington DC Locus of locations at which the I/N would not exceed -10 dB WiMax base station 50 km Richmond 200 km 78  W77  W 38  N 39  N Phase 2 Interference Loci

30. 30 Distortion of Received FSS Spectrum by BWA Signal Tests Results Show Overdrive of LNB US Navy testing BWA Carrier 3.5 GHz -31 dBm 3.3 GHz 4.3 GHz Intermodulation Product Satellite Signals Intermodulation Products

31. Phase 1 identified considerable interference within several kilometers of a FSS system. Phase 2 identified a range of interference between 50 km and well beyond the earth curvature dependant upon the local terrain. WiMax/FSS Compatibility Testing Results Summary

32. 32 FSS Joint Voices: WTA, CASBAA, GVF, SUIRG, SAP-REG, APSCC, ESOA, SIA Additional Notes on C-Band Spectrum Issues WRC-07: 19 Oct 07 ITU Approves OFDMA as 6 th Mobile Protocol Any Country Can Designate BWA in C-Band on a Secondary Basis Italy, Austria, U.K. Permit Mobility in Fixed WiMAX Spectrum WiMAX Forum Starts 802.16e Certification in 2.3 GHz & 2.5 GHz; 3.4-3.6 GHz Not Likely Before FY09, Also 700 MHz to Come. 700 MHz UHF TV Bands Ideally Suited Mobile, (U.S. Auction $19B – Open Access) In the U.S. IEEE 802.11y Jun 08, 3.65-3.7 GHz, 20 Watts

33. WiMAX Opt-in Countries

34. 34 Conclusions BWA/IMT in part, or all, of the FSS C-Band Will Be incompatible with general FSS reception in Any Part of C- Band in the same geographical area. BWA/IMT may be compatible in a part of C-Band with FSS reception by a small number of Earth Stations if: Appropriate exclusion zones around each of the earth stations are established (2-150 km) Subscriber units only emit signals when contacted with a base station & adjust power accordingly MIMO Beam Forming vice Spatial Diversity* Introduction of BWA/IMT by one country can block FSS reception in an adjacent country. * Spatial Diversity can be very susceptible to un-licensed interferences (EMI)

35. Thank you to the following: US Navy NAVSEA NSWCDD Q53 Section Contributed some of these slides SES-NewSkies SES-Americom AsiaSat General Dynamics Sat COM Division RSI/Vertex Group Effort

36. Utility Telecom Council (UTC) is filing a Petition for Rulemaking to the FCC to permit shared, secondary terrestrial fixed service in 14.0 -14.5 GHz UTC contracted an engineering firm to model simultaneous operation with FSS and determined 376,000 links are possible without interference. Satellite groups are developing a response to the petition. 14.0-14.5 GHz for Terrestrial Services Petition

37. Do you have problems with satellite interference? Interference is a Quality of Service issue Take a pro-active position to reduce interference If you support what SUIRG is doing then please consider membership. SUIRG’s Future

38. 2008 SUIRG Interference Conference/Meeting 07-09 October 2008 Cairo, Egypt Hosted by NileSat $450 non-member attendance fee SUIRG Update

39. Interested in SUIRG’s activities Bob Ames (bobames@suirg.org)bobames@suirg.org www.suirg.org Sign-up for Interference e-News on web site SUIRG fact sheet available in back Thank You