Re: [casper] FFT biplex_core block

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

Re: [casper] FFT biplex_core block

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

Re: [casper] FFT biplex_core block

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

Re: [casper] FFT biplex_core block

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

Re: [casper] FFT biplex_core block

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

[casper] FFT biplex_core block

Howdy, Partly motivated by a search for RAM savings, and partly for fun, I'm looking through the innards of the fft_biplex_real_4x block. Can someone tell me, using short words and/or pictures, what the the relationship between the inputs (pol1, pol2) and the outputs (out1, out2) on the