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| To: | [email protected] |
|---|---|
| Subject: | Re: VLF: Trying the impossible, once more - symbol error rate for short data |
| From: | Markus Vester <[email protected]> |
| Date: | Sat, 14 Oct 2017 05:16:13 -0400 |
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Hi Paul, when working with wav files that are too short, we find that Eb/N0 based on symbol error rate is usually shown too low. I think that you mentioned a while ago that although non-existing symbols are completely ignored by the decoding process itself, they are counted as "always wrong" in the error statistics. Wouldn't it be more fair to assume 50% error rate for missing data? Best 73, Markus -----Ursprüngliche Mitteilung----- Von: Paul Nicholson <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Fr, 13. Okt 2017 0:38 Betreff: Re: VLF: Trying the impossible, once more Stefan wrote: > f = 6470.100000 Hz > Start time: 12.October.2017 06:00:00 UTC > Symbol period: 180 s > Characters: 1 > CRC bits: 0 > Coding 8K19A A great signal in Todmorden, Eb/N0 = 15.9, phase -114.3. Has the potential to go a long way! It actually decodes correctly here after only 980 seconds of signal, about 5.5 symbols out of 192. -- Paul Nicholson -- |
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