The biplex_real_2x is what you want, and it will do two 'polarizations' at a time. On Nov 2, 2013 10:56 PM, "Louis Dartez" <louisdar...@gmail.com> wrote:
> Hello Mark, Glenn, et al., > > > Does anyone know of any CASPER FFT block that will take as inputs two real > sampled values (per ADC input) and output a single complex-valued frequency > bin per FPGA clock? The three FFT blocks that I’ve found on the CASPER > block documentation and the latest mlib library (wideband > real<https://casper.berkeley.edu/wiki/Fft_wideband_real> > , biplex real 4x <https://casper.berkeley.edu/wiki/Fft_biplex_real_4x>, > and the biplex real 2x<https://casper.berkeley.edu/wiki/Fft_biplex_real_2x>) > all accept real sampled values but require a minimum of 4 simultaneous > values per FPGA clock per ADC input. I could really use an FFT block (and a > corresponding polyphase FIR block) that will accept only two real sampled > values for each of a total of four ADC inputs and spit out a single complex > FFT bin (per stream) per FPGA clock. > > Can someone point me in the right direction here? > > Thanks! > > L > > > > Louis P. Dartez > > Graduate Student > > Center for Advanced Radio Astronomy > > University of Texas @ Brownsville > > >
