suirg wimax activities 23 may 2007 washington, dc

SUIRG WiMax Activities

23 May 2007

Washington, DC

Agenda

SUIRG Background

SUIRG Programs

SUIRG’s WiMax Activities

SUIRG’s Future

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.

Who Belongs

Membership grown to 33 members Communication Satellite Operators Satellite Service Users Satellite Monitoring Equipment Vendors Other Organizations concerned with Interference

Founding Members: Intelsat, PanAmSat, Inmarsat, NewSkies, QinetiQ, Glowlink

Military oriented members: General Dynamics, Aerospace Corp., Ball Aerospace & Tech, & MITRE

Up-linker Company Registry

actively collecting up-link registrant companies Interference Incident Logging

actively collecting interference incident data Certified Trained Operator Registry

(under development)

Tools on SUIRG Web site

Training & Certification Program Review & Certify Sat Ops Training Establish Certification Sat. Ops. DB

Interference Source Identifier Unique ID embedded in datastream

Interference Signature & Resolution DB Regulatory WG

BWA shared usage of FSS C-band Active participant in industry letter to EC

requesting non-approval at next ITU meeting

On-going Programs

New users in C-band downlinks

Future mobile phone networks(IMT Advanced, 4G, ….)

Broadband Wireless Access (BWA), WiMax, FWA, ….

Is Is beingbeing considered by ITU considered by ITUIs currently being introduced country Is currently being introduced country by country worldwideby 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 satellitesAdditional band

(FSS, feeder links for MSS, …)

3.43.4 3.53.5 3.63.6 3.73.7 3.83.8 3.93.9 4.04.0 4.14.1 4.24.2Std. CStd. CExtended CExtended C

Unwanted Emission Levels

BWA band

Signals appear at the input of the LNB with a much higher power density than the satellite signals

How much suppression of out-of-band components can one realistically expect from BWA or IMT equipment?Appendix 3 of the Radio Regulations provide limits for spurious emissions

Why: Provide additional quantifiable data for administrations and other interested organizations

When: Tentative August/September 2007

SUIRG Field Testing

Who will participate and/or contribute? US Navy NAVSEA NSWCDD Q53 Section SES-NewSkies SES-Americom Intelsat AsiaSat WiMax Forum Others welcome

What will be tested? Measure interference generated by

WiMax Base Station (BS) and Subscriber Station (SS) transmissions into a satellite receiving station by measuring satellite channel C/N, BER and power levels

Satellite Receiver

WiMAX Device

Spectrum Analyser

Receive Satellite Antenna

Base Station

Video Monitor

Base Antenna height >100'Down angle 10 degreesHPBW Horz 60 degreesHPBW Vert 10 degrees

17 dBi GainMax EIRP 38dBm

X-distance

Subscriber Station

Subscriber Antenna height >10'HPBW Horz 18 degreesHPBW Vert 18 degrees

18 dBi Gain

Y-distance

Test Horn

Typical Test Configuration

Transmission ParametersBS Location TBD

SS(1), SS(2) Location TBD

BS Antenna Specifications 60 degree horizontal HPBW, 10 degree vertical HPBW

Operational Frequency 3.4 – 3.6 GHz

Satellite / Orbital Location TBD

Bandwidth 3.5MHz, 7MHz

Modulation Technique QPSK, BPSK, 16QAM, 64QAM

Convolution Coding Techniques (FEC)

½, 2/3, ¾

Center Channel Frequency Resolution

1 kHz raster channel

Output Power (max) 21dBm

Procedure will be 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

WIMAX Industry (and associated Organisations) CASBAA (Cable and Satellite Broadcasting Association of Asia) NAVSEA NSWCDD Q53 (US Navy)

Test Program

Particular attention will be 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

If required, testing will also be conducted using different transmit frequencies from the WIMAX transmitter.

Test Program

The entire testing process can be witnessed by any interested party involved in the Satellite Industry.

All results will be made available within 15 days following the conclusion of testing

The “TV Picture Quality” result will be based on the following:

Grade 1: Excellent Broadcast quality Grade 2: Occasional Blocking, poor BER Grade 3: Frequent Blocking, Emergency Broadcasts only Grade 4: Unusable

Test Program

Procedural steps A—J will be repeated upon the insertion of the band pass filter

Spectrum Plots from the Analyzer will be taken at every point during procedure using the following settings:

Span: 100Mhz RBW: 100Khz VBW: 1Khz 5dB/div ( or a more applicable as deemed necessary during

the test) Max hold or Video Averaging Techniques may be used if

deemed necessary

Test Program

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

2007 SUIRG Interference Conference/Meeting 27-29 November 2007 Hong Kong Hosted by AsiaSat $500 non-member attendance fee

SUIRG Update

Interested in SUIRG’s activities Bob Ames (bobames@suirg.org) www.suirg.org Sign-up for Interference e-News on

web site SUIRG Fact sheet available