Paul,
Thanks for the details regarding the Eb/N0 numbers - I though, perhaps, that
the Eb/N0 was a default value it was much higher than SL Spectrum Display
appeared to support.
The carrier Eb/N0 for the three decodes were 26.1, 24.5 and 22.3 dB
respectively which also closely track with the actual carrier S/Ns for all
three as reported by the decoder and observed in SpecLab.
Tnx agn & 73,
Rob - K3RWR
> On Dec 26, 2018, at 10:11, Paul Nicholson <[email protected]> wrote:
>
>
> Rob - K3RWR, wrote:
>
> > 2200Z: Rank 0; Eb/N0 71.8 dB; MX &HNY
> > 2300Z: Rank 0; Eb/N0 71.8 dB; MX &HNY
>
> > Blockbuster signal if one can believe the reported Eb/N0 ...
>
> Indeed, a blockbuster signal - no symbol errors at all!
>
> The decoding program makes an estimate of Eb/N0 from the
> number of symbol errors. This fails, saturating at 71.8dB,
> when there are no errors.
>
> It also reports a 'carrier Eb/N0' which is an estimate of
> Eb/N0 based on the measured S/N of the signal. This is
> usually the best one to use.
>
> --
> Paul Nicholson
> --
>
|