For future reference, I’ve attached a plot summarizing the performance of the FT8 decoder in r7775. The 50% decoding threshold is at about -21 dB. These results pertain to an AWGN channel (no fading) and were obtained using .wav files generated by ft8sim. Each .wav file contains 25 signals. A total of 40 such files (1000 potential decodes) was analyzed at each SNR. The ft8sim DT parameter was set to 0.5s for this simulation.
I should note that the idealized AWGN channel simulation used for this benchmark does not reflect the type of conditions that we typically see in real life on HF or 6m. This is mainly intended as a performance benchmark for development purposes - not an advertisement of actual performance in the real world! Steve k9an
fig_ft8.pdf
Description: Adobe PDF document
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