[Lf] Re: spectral generation through switching

[Andre Kesteloot]

Hal wrote:

>  A while back I gained some experience with using shift
> registers to generate various spectra.  The trick is to select a shift
> register tap combination and clock speed which produces a waveform with
> selected fourier representation.  Using this method you can generate a number
> of interesting spectral representations using only the pulsing nature of
> the shift register.

yes

> [..] Receiving software capable of recognizing
> a symbol set constructed from the waveform would have to be written.

something like a matched filter, I suppose

The advantage is that it is much easier to turn any transmitter on and of than to
make it somewhat linear.
Let's think about this some more

73
André