Hi Jordan,
you can use (complex) bandpasses to select either halfband, and frequency
translate the results to your heart's desire individually, if this is what
you're after. You might need to design that filter yourself -- which isn't as
hard as it sounds:
use the gr_filter_design tool, which comes with GNU Radio, design a lowpass
with a passband of $\frac{b_\text{halfband}}2$ and shift the taps in frequency
domain by multiplying them with a complex sine
$e^{j\frac{b_\text{halfband}}{2}\pi n}$.
Also, taking the signal (twice), shifting it by $\pm\Delta_f ,\, |\Delta_f|\geq
b_\text{halfband}$ respectively, and then high passing everything below
$\Delta_f - \frac{b_\text{halfband}}{2}$ away should work, too.
also, if possible within your nyquist bandwidth without introducing aliases in
places you need, multiplying with a *real* cosine (and high passing) would do
your job, too.
Greetings,
Marcus
I will try to explain this the best I can.. but here is what I am looking to do:
I have a digital signal that takes up 100kz of bandwidth. I want to "split" this signal and push
both halves apart. The best way to explain this is, say you have an AM signal. Normally, the LSB and USB are
right on top of the carrier in the "centre". I want to offset the LSB and USB "apart"
from each-other, and then have the receiver place them back in their proper place.
I attempted to simply use the Signal Source and try to bandpass them, but that
did not work like I wanted it to. All the other filter seem to work on both
sidebands, and this won't work either.
Any help here would be awesome.
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