Attachment Schedule S document

This document pretains to SAT-LOA-20060412-00042 for Application to Launch and Operate on a Satellite Space Stations filing.

IBFS_SATLOA2006041200042_494569

• Noise Budget Reference Transmission characteristics for CONUS and spot beam services are based on the following parameters: Modulation QPSK Coding Reed Soloman concatenated with Viterbi Rate 1/2 (or equivalent Turbo code) Channel Bandwidth CONUS Beam Service 27 MHz Spot Beam Service 27MHz Channel Data Rate CONUS Beam Service/ per 32 Mbps transponder Spot Beam Service, per transponder 32 Mbps Threshold Eb/No 3.1 dB @ BER = 10-9 Redundancy of Active Components Minimum of 3:2 TDM Access Method DVB Satellite Noise Figure/Temperature 3 dB/920K Spot Beam Antennas Transmit 1.7 meters Receive 1.1 meters CONUS Beam Antenna 1.7 meters Automatic Transmitter Power Control On all uplinks Automatic Level Control On all uplinks Command Attenuator Settings 15 dB in 1 dB steps Interbeam Co-channel Interference 19 dB, average Linearizer At each TWTA input Spot Beam Link Availability 99.5% CONUS Uplink Availability >99.9% CONUS Downlink Availability 99.7% (99.6% in southeast) Feederlink Spot Beam Co-Ch C/I, dB 30 Feederlink & Gateway ES Crosspol 35 dB Subscriber Terminal Crosspol 30 dB Feederlink & Gateway ES, meters 5 Feederlink & Gateway ES Gain, dBi 60.5 Satellite Spot Beam Antenna Gain, peak, dBi 49.4 Subscriber ES, meters 0.45 Subscriber ES Gain, dBi 36.8 Nominal Transponder Gain, dB 152 Earth Station Frequency Tolerance 0.002%

CONUS Beam The overall transmission characteristics for the CONUS beam for five examples are given in Figure C-1 for the 101°W orbital position. The same design is used for 110°W, and 91°W orbital slots, but slant range and elevation angle slightly alters some parameters. The uplink has fixed rain margin, however automatic level control (“ALC”) enables the uplink to fade even further, until the downlink threshhold is exceeded at a subscriber earth station. This method of operation enables the availability to exceed 99.98%, before the service is interrupted. It is assumed that the feederlink is located within spot beam. Pegasus tentatively plans to have two feederlink stations, one near Los Angeles and another near Las Vegas. ES Location Seattle New York Miami Dallas Los Angeles Latitude, degrees north 47.62 40.78 25.77 32.77 34.05 Longitude, degrees west 122.33 73.97 80.2 96.77 118.25 ES Elevation, degrees 31.5 35.3 52.0 37.0 46.3 Uplink Feederlink ES Power, Maximum, dBW/ch 13.1 13.1 13.1 13.1 13.1 Loss, dB -3 -3 -3 -3 -3 Eirp, peak, dBW 70.6 70.6 70.6 70.6 70.6 Total Uplink C/I, dB 28.7 28.7 28.7 28.7 28.7 .Uplink C/N+I, dB 24.0 24.0 24.0 24.0 24.0 SFD, dBW/m^2 -80.9 -80.9 -80.9 -80.9 -80.9 Downlink Satellite Transmitter Power, dBW/ch 23.2 23.2 23.2 23.2 23.2 Loss, dB -2.5 -2.5 -2.5 -2.5 -2.5 Satellite Antennna Gain, dBi 32.5 33.0 34.0 33.5 32.0 Eirp, dBW 53.2 52.7 54.7 54.2 52.7 Eirp Density, dBW/MHz -17.1 -16.6 -15.6 -16.1 -17.6 Downlink C/I, dB 21.5 21.5 21.8 21.8 21.7 CNR Threshold, dB 4.2 4.2 4.2 4.2 4.2 PFD, dBW/MHz/m^2 -119.8 -119.2 -118.0 -118.5 -120.0 Rain Availability, % 0.1 0.15 0.45 -.15 0.1 Figure C-1. 25/17 GHz CONUS Link Data, 5 Meter Feederlink ES Antenna and

Spot Beam The overall transmission characteristics for the spot beams for five examples are given in Figure C-2. When applicable, values are given for 110°W, 101°W and 91°W, respectively. The latitude and longitudes give the spot beam boresight (not an earth station location). The same design is used for each of the three orbital slots, but slant range and elevation angle slightly alters some parameters. Each uplink has a fixed rain margin. However, automatic level control (“ALC”) enables the uplink to fade even further, until the downlink threshold is exceeded at a subscriber earth station. This method of operation enables the uplink availability to exceed 99.98%. Each spot beam has a Gateway earth station. The downlink examples in Figure C-2 are based on circular spot beams and an availability due to rain of 99.5% Spot Beam Number 27 1 24 34 17 Latitude, degrees north 48.76 39.73 23.95 30.65 34.59 Longitude, degrees west 125.76 73.44 80.25 100.14 119.21 ES Elevation (at boresight) 32.0, 29.2, 24.9 30.7, 36.0, 40.6 46.5, 53.6, 59.5 52.7, 54.3, 52.9 48.63, 45.4, 39.9 Uplink Feederlink ES Power, Maximum, dBW/ch 20.1, 21.0, 22.9 25.4, 23.3, 22.0 45.4, 42.3, 40.4 25.3, 25.0, 25.2 14.9, 15.3, 16.0 Loss, dB -3 -3 -3 -3 -3 Eirp, peak, dBW 77.9, 78.8, 80.6 83.2, 81.1, 79.8 103.2, 100.0, 98.2 83.0, 82.7, 83.0 72.7, 73.0, 73.7 Total Uplink C/I, dB 18.9 18.9 18.9 18.9 18.9 Uplink C/N+I, dB 17.7 17.7 17.7 17.7 17.7 SFD, dBW/m^2 -73.9, -73.0, -71.3 -68.2, -70.6, -71.8 -48.3, -51.4, -53.2 -68.4, -68.7, -68.5 -78.8, -78.5, -77.9 Downlink Satellite Transmitter Power, dBW/ch 6.3, 6.7, 7.3 7.9, 7.2, 6.7 12.5, 11.6, 11.1 7.5, 7.3, 7.4 4.3, 4.4, 4.7 Loss, dB -2.5 -2.5 -2.5 -2.5 -2.5 Satellite Antenna Gain, peak, dBi 49.4 49.4 49.4 49.4 49.4 Eirp, EOC, dBW 49.2, 49.6, 50.2 50.8, 50.1, 49.6 55.4, 54.5, 54.0 50.4, 50.2, 50.3 47.2, 47.3, 47.6 Eirp Density, dBW/m^2 -21.1, -20.8, -20.1 -19.6, -20.2, -20.7 -15.0, -15.8, -16.3 -20.0, -20.1, -20.0 -23.1, -23.0, -22.7 Downlink C/I,dB 17.1, 17.0, 17.0 17.0, 17.1, 17.1 17.2, 17.2, 17.2 17.2, 17.2, 17.2 17.2, 17.1, 17.1 CNR Threshold, dB 4.2 4.2 4.2 4.2 4.2 PFD, dBW/MHz/m^2 -123.8, -123.5, -122.9 -122.3, -122.8, -123.2 -117.4, -118.1, -118.6 -122.3,-122.4,-122.3 - 125.5,-125.4,125.2 Rain Availability, % 0.5 0.5 0.5 0.5 0.5 Figure C-2. 25/17 GHz BSS Spot Beam Link Data, 5 meter Gateway ES, 0.45 meter


Document Created: 2006-04-13 12:09:18
Document Modified: 2006-04-13 12:09:18
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