Calculate the overall Eb/N0 ratio for a satellite system with the following parameters. Use the antenna gain table in Figure 2-27 and the free space path loss & angle elevation correction in Figure 2-28.
Uplink
1. Earth station transmitter output power at saturation, 2000 W 33 dBW
2. Earth station back-off loss 3 dB
3. Earth station branching and feeder losses 4 dB
4. Earth station transmit antenna gain (from Figure 14-27, 15 m at 14 GHz) 64 dB
5. Additional uplink atmospheric losses 0.6 dB
6. Free-space path loss (from Figure 2-28, at 14 GHz) 206.5 dB
7. Satellite receiver G/Te ratio _5.3 dBK_1
8. Satellite branching and feeder losses 0 dB
9. Bit rate 120 Mbps
10. Modulation scheme 8-PSK
Downlink
1. Satellite transmitter output power at saturation, 10 W 10 dBW
2. Satellite back-off loss 0.1 dB
3. Satellite branching and feeder losses 0.5 dB
4. Satellite transmit antenna gain (from Figure 2-27, 0.37 m at 12 GHz) 30.8 dB
5. Additional downlink atmospheric losses 0.4 dB
6. Free-space path loss (from Figure 2-28, at 12 GHz) 205.6 dB
7. Earth station receive antenna gain (15 m, 12 GHz) 62 dB
8. Earth station branching and feeder losses 0 dB
9. Earth station equivalent noise temperature 270 K
10. Earth station G/Te ratio 37.7 dBK_1
11. Bit rate 120 Mbps
12. Modulation scheme 8 -PSK