Attachment Schedule S GXT

This document pretains to SAT-MOD-20080904-00165 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2008090400165_663014

Return Link Budget GEN2 Data Handheld 2.46 MHz Return Link: 1.6 GHz up/7 GHz down Inner Outer Uplink Analysis Units Frequency 1.6 1.6 GHz EIRP per user -2.5 -4.2 dBW Altitude 1414 1414 km User elevation angle 70 25 deg Slant Range 1486 2528 km Path loss -160.0 -164.7 dB Polarization & Tracking loss -1 -1 dB S/C Rx Signal Strength -163.5 -169.8 dB Satellite antenna gain 13.09 17.78 dBi Line loss -2.00 -2.00 dB User signal at transponder -152.4 -154.1 dBW System noise temperature 396.64 396.64 K Thermal noise density, No -202.6 -202.6 dBW/Hz Average user data rate 20000 20000 bps Uplink Eb/(No) 7.2 5.6 dB Interference per channel -134.71 -137.23 dBW Spreading bandwidth 2.46 2.46 MHz Interference density, Io -198.6 -201.1 dBW/Hz Uplink Eb/(No+Io) 1.7 1.7 dB Nominal transponder gain 127.4 127.4 dB Downlink Analysis Frequency 6.98 6.98 GHz TX power per user -20.8 -22.5 dBW Transmit line loss -2.2 -2.2 dB Satellite antenna gain 7.10 7.10 dBi EIRP per user -15.9 -17.6 dBW GW elevation angle 40 40 deg Range 1969 1969 km Free space loss (40 deg GW elev) -175.2 -175.2 dB Polarization & tracking loss -0.1 -0.1 dB Pointing loss -1.0 -1.0 dB RX signal/user/satellite -192.2 -193.9 dBW GW antenna gain (incl. line losses) 49.5 49.5 dBi RX signal at antenna output/user/satellite -142.7 -144.4 dBW System noise temperature 127.7 127.7 K Thermal noise density, No -207.5 -207.5 dBW/Hz Interference per channel -140.14 -142.65 dBW Spreading bandwidth 2.46 2.46 MHz 1/(10*LOG(spreading bandwidth)) -63.9 -63.9 dB/Hz Interference Density, Io -204.0 -206.6 dBW/Hz Downlink Eb/(No+Io) 16.7 16.6 dB Coherent Combining gain 1.3 1.3 dB Overall (up&down) Eb/(No+Io) 2.9 2.9 dB Required Eb/No w/ power control margin 2.9 2.9 dB Available margin for propagation effects 16 16 dB


Document Created: 2008-09-04 16:06:57
Document Modified: 2008-09-04 16:06:57
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