So, I'm sure everyone has been eagerly awaiting the results of
simulations
Dave's answer is indeed correct.
For a 16-point biplex_core FFT, with pol1 and pol2 being independent
time-streams, presented in normal time order (i.e., with consecutive time
samples) and output channels defined such
I think we need to takes bets on the even/odd vs high/low division of channels
between out1 and out2... :)
> On Feb 21, 2018, at 23:33, Jack Hickish wrote:
>
> Well, if Dave, Glenn and Aaron all agree, then I'm sold.
>
> Thanks.
>
>> On Wed, Feb 21, 2018, 10:50 PM David MacMahon wrote:
>> Hi
Well, if Dave, Glenn and Aaron all agree, then I'm sold.
Thanks.
On Wed, Feb 21, 2018, 10:50 PM David MacMahon wrote:
> Hi, Jack,
>
> I haven’t used the biplex_core block in a while, but I believe the inputs,
> pol1 and pol2, are two independent complex input signals. The outputs, out1
> and ou
Hi, Jack,
I haven’t used the biplex_core block in a while, but I believe the inputs, pol1
and pol2, are two independent complex input signals. The outputs, out1 and
out2, first output the frequency channels for input pol1, with the low half of
the band being output in bit reversed order on out1
Thanks Glenn,
Now I get to mess with weird CASPER grey blocks *and* buy things from
Amazon. It's such a joy when my two favorite pastimes come together :)
J
On Wed, Feb 21, 2018, 9:32 PM G Jones wrote:
> If I recall correctly, this book gives a very nice description of the
> biplex fft algorit
Thanks Aaron,
That seems pretty plausible based on what the downstream logic appears to
be trying to do. Maybe.
If I can verify this, maybe I'll add a docstring...
Cheers
Jack
On Wed, Feb 21, 2018, 9:27 PM Aaron Parsons wrote:
> My recollection is that Pol1 outputs come for the first N/2 clo
If I recall correctly, this book gives a very nice description of the
biplex fft algorithm:
https://www.amazon.com/Multirate-Digital-Signal-Processing-Crochiere/dp/0136051626
I agree with Aaron's memory of the output ordering.
Glenn
On Feb 21, 2018 18:04, "Jack Hickish" wrote:
> Howdy,
>
> Par
My recollection is that Pol1 outputs come for the first N/2 clocks out both
output ports, even channels on top (in bit reversed order) and odd on
bottom (also bit reversed order). Pol2 outputs follow for the next N/2
clocks, same order.
On Wed, Feb 21, 2018 at 6:04 PM Jack Hickish wrote:
> Howd
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