To: | [email protected] |
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Subject: | Re: VLF: EbNaut tonite, 'SMS' via VLF |
From: | Paul Nicholson <[email protected]> |
Date: | Fri, 26 May 2017 05:03:57 +0000 |
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Stefan wrote: > ...in less than a day and without stacking! You made a good choice of symbol duration. The error map is at http://abelian.org/vlf/tmp/170525e.png We might do as well or better with a daytime slot 05:00 to 21:00 to avoid the night noise and two terminators. Markus wrote: > I should have mentioned that SpecLab FFT recordings are > usually delayed by a four sample latency. That helps, I can see some correlation now. The message is at Carrier Eb/N0: -7.5 dB Carrier S/N: 22.09 dB in 12.6 uHz, -26.90 dB in 1Hz, -60.88 dB in 2.5kHz I tried resampling to a higher rate but that didn't help. -- Paul Nicholson -- |
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