| 1.calculation of uplink path loss |
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Uplink frequency GHz |
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Range (35778 - 41679)
km |
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Uplink path loss dB |
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| 2.calculation of transmitting antenna gain |
| Uplink antenna diameter m |
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| Uplink antenna aperture efficiency e.g. 0.65 |
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| Uplink antenna transmit gain dBi |
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| 3.calculation of transmit EIRP & operating flux dencity |
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Transmit power per carrier(W) |
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Transmitter feader losses(dB) |
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Antenna pointing loss |
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No of carriers |
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Amplifier back off |
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Transmit EIRP dBW |
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Uplink pfd at satellite dBW/m^2 |
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Power rating of ground transmitter |
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| 4.Calculation of uplink to noise ratio |
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Up link rain attenuation |
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Satellite uplink G/T
dB/K |
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Uplink C/N dB |
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| 5.Calculation of satellite operating down link eirp |
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Saturated EIRP (dB W) |
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Saturated EIRP (watts) |
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Saturation FD (dB/sq.m) |
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Output back off (dB0 |
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In put back off (dB) |
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Satellite operating downlink EIRP
dBW |
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Satellite operating down link EIRP (watts) |
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| 6.Calculation of satellite operating band width |
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Input data rate(Kb/S) |
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Link overhead factor(%)(worst case) |
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FEC rate coding |
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Bits/symbol (m) |
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Effective in put data rate |
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Transmission rate |
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Bandwidth Hz |
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| 7.Calculation of down link path loss |
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Downlink frequency GHz |
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Downlink path loss dB |
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| 8.Calculation of receiver antenna gain |
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Downlink receive antenna diameter m |
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Downlink receive antenna aperture efficiency e.g. 0.65 |
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Downlink receive antenna gain dBi |
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| 9.Calculation of reciver G/T |
| Antenna elevation
angle(deg) |
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| Antenna noise
temp(K) |
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| Increase in noise temperature due to
rain(K) |
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| LNA noise temp (K) |
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System noise temp(k) |
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| Downlink receive antenna G/T dB/K |
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| 10.Calculation of link margin |
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Down link rain attenuation (dB) |
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Receive antenna pointing loss(dB) |
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Eb/No Required for BER of 1/10^7 |
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| Downlink C/N (dB Hz) |
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Overall down-link C/No [dB Hz] |
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Available Eb/No |
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| Available link margin |
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