The information comprises 128kbit/s data. 1/2 rate Viterbi FEC is used.
To be sent to 0.9m diameter antennas. Bandwidth is 250 kHz,
Transponder parameters EIRP=50 dBW, G/T=+5 dBK, PFDsat = -80 dBW/m^2 (
say Eutelsat W2 )
Assume multi-carrier operating point 7 dB input and 4.5 dB output back off.
Uplink Satellite PFDsat = -80 dBW/m^2
Operating transponder PFD = -80 - 7 = -87 dBW/m^2
Operating PFD for this carrier = -87 -10log(250000 / 36000000) = -87 -21.6 =
-108.6 dBW/m^2
Downlink eirp = 50 - 4.5 - 10 log (250000 / 36000000) = 50 - 21.6 = 23.9 dBW
Amend white boxes as you wish. and click to any calculate button to obtain
results in the green boxes.
Pre-calculated link budget with useful default parameters inserted (may be amended and recalculated)
SCPC / DAMA 8kbit/s mesh network
satellite link budget for 1.8m antennas - Skylinx
Digital television
broadcasting - MPEG satellite link budget
Line of sight link radio budget
- one way - single hop
Satellite mobile
phone link budget - return link from mobile to hub
Europe to Africa - Satellite
internet broadband outlink
Africa to Europe -
Satellite internet TDMA return link
Explanation of satellite links
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Eric Johnston
Copyright © 1 Jan 1999 Satellite Signals Ltd All Rights Reserved
Last Revision: 3 Dec 2004, 30 Sept 2005.