Hi Bill and Robin,
So, we stay at single carrier architecture along with 5x clock for the purpose
to maintain the encoder and decoder codes.
Regards,
take
de JA5AEA
Hi Take-san,
the output when NSlots >1 is not a simple distribution of the Tx power
between tones, the reason for this is that multiple tones will mix and
some filtering is necessary to minimize undesirable side-bands. The
result for NSlots=5 is a power reduction per signal of ~14dB with
respect to an NSlot=1 transmission using the same radio settings.
73
Bill
G4WJS.
Take-san,
for a small number of constant level carriers, such as 5, they should be
considered to add in phase when passed through a clipping amplifier,
rather than according to individual power. Thus the second term in the
formula quoted below would be -20log_10 (5), about -14dB, rather than -7dB.
If these constant carriers are not considered to add in phase, rather
than according to power, then the signal will clip, causing
intermodulation products and worse, depending on the degree of clipping.
Hope this helps,
Robin, G8DQX
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