SOURCEFORGE » RALF » 2016 Channel emulation for satellite communications

h1. Test and results

p=. !{width:50%}Noise_test_bench.png!

*Figure 1. Test bench used to measure Eb/No*

p=. !{width:50%}Modem_carrier_to_noise_ratio.png!

*Figure 2. Eb/No measurements obtained from the modem interface*

p=. !{width:50%}Ip_throughput_for_5dBand0dB.png!

*Figure 3.  IP throughput for 5 dB and 0 dB*

p=. !{width:50%}Degradation_introduced_by_the_emulator.png!

*Figure 4. Eb/No degradation introduced by the emulator*

p=. !{width:50%}Load_effect.png!

*Figure 5. Output power degradation introduced by the emulator*

p=. !{width:50%}Input_demodulator_spectrum.png!

*Figure 6. Signal-to-noise power measurements carried out with the spectrum analyzer*

p=. !{width:50%}Degradation_in_the_output_level.png!

*Figure 7. Signal power degradation due to the emulator*

p=. !{width:50%}Delay_test_bench_2.png!

*Figure 8. Test bench used to measure a reference round trip time*

p=. !{width:50%}Delay_test_bench.png!

*Figure 9. Test bench used to measure the total round trip time*

p=. !{width:50%} Total_delay_without_emulator.png!

*Figure 10. Round trip time measurements using the ping command (10 packets of 1B and 1500B, respectively) when the emulator is not connected*

p=. !{width:50%}Delay050100150200_1bytes.png!

*Figure 11. Round trip time measurements using the ping command (10 packets of 1B) when the emulator is connected for different delays values*

p=. !{width:50%} Delay050100150200_1500bytes.png!

*Figure 12. Round trip time measurements using the ping command (10 packets of 1500B) when the emulator is connected for different delays values*