Attachment_No_10.pdf

Downlink Budget T/ESS Satellite Customer Support Tuesday 28 May2013

Service Name RFA Bankok Downlink earth station Bangkok, Thailand Satellite name ASIASAT3S

Link Input Parameters Value Units Site latitude 13.75N degrees Site longitude 100.58E degrees Site altitude 0.002 km Frequency 4.040 GHz Polarization Horizontal Rain model ITU-R Rain zone or mmlh 87.4 Availability (average year) 99.95 % Antenna aperture 2.4 metres Antenna efficiency or gain (+ or - prefix) +38 % ordBi Coupling loss 0.3 dB Antenna mispoint loss .8 dB Other path losses .25 dB LNB noise figure or temp (+ prefix) +20 dBorK Antenna noise 40.33 K CsatlAClo 100 dB.Hz CsatlAS10 100 dB.Hz CsatIXPlo 100 dB.Hz CIIM 60 dB.Hz

Satellite Input Parameters Value Units EIRP (saturation) 39 dBW Bandwidth 36 MHz Longitude 105.50E degrees

Carrier/Link Input Parameters Value Units Modulation 4-PSK Required Eb/No 5.5 dB Symbol rate 26.5 Mbaud Required Eb/No 5.5 dB Information rate 26.5 Mbps Overhead 2.3 % FEC code rate 1/2 Spreading gain 0 dB Implementation loss 0 dB System margin 0 dB

General Calculations Value Units Elevation 72.86 degrees True azi muth 160.09 degrees Compass bearing 160.78 degrees Path distance to satellite 36025.45 km Propagation time delay 0.120168 seconds Antenna gain 38.00 dBi Availability (average year) 99.95 % Link downtime (average year) 4.383 hours Availability (worst month) 99.790 % Link downtime (worst month) 1.537 hours EIRP density (satellite) -35.23 dBW/Hz EIRP density (flange) -194.26 dBW/Hz

Downlink Calculation Satellite EIRP per carrier Antenna mispoint Free space loss Atmospheric absorption Tropospheric scintillation fading Cloud attenuation Rain attenuation Total attenuation (gas-rain-cloud-scintillation) Other path losses Noise increase due to precipitation Downlink degradation (DND) Total system noise Figure of merit (Gff) Power flux density C/No (thermal) C/N (thermal)

C/ACI

C/ASI

CIXPI

C/IM

C/(N+I) Eb/(No+lo) Implementation loss System margin Net Eb/(No+lo) Required Eb/(No+lo) Excess margin

Space Segment Utilization Information rate Information rate (inc overhead) Transmit rate Symbol rate Noise Bandwidth Occupied bandwidth Allocated bandwidth

Clear 39.00 0.80 195.71 0.04 0.00 0.00 0.00 0.04 0.25 0.00 0.00 77.00 18.84 -123.12 89.64 15.40 25.77 25.77 25.77 60.00 14.35 14.35 0.00 0.00 14.35 5.50 8.85

Value 25.9042 26.5000 53.0000 26.5000 74.23 31.8000 13.2500

Rain 39.00 0.80 195.71 0.04 0.21 0.05 0.11 0.31 0.25 0.76 1.03 91.64 18.08 -124.15 88.61 14.38 25.77 25.77 25.77 60.00 13.52 13.52 0.00 0.00 13.52 5.50 8.02

Units dBW dB dB dB dB dB dB dB dB dB dB K dB/K dBW/m2 dB.Hz dB dB dB dB dB dB dB dB dB dB dB dB

Units Mbps Mbps Mbps MBaud dB.Hz MHz MHz