Thank you Brian & Matt Using Matt HBF coefficients given by the verilog file [coeff_rom.v], I did the HBF frequency response analysis by MATLAB FDATOOL. Attached is the USRP HBF result frequency response. As we can see, there is a 6 dB passband gain. In my next step, I will try to provide the frequency response of the cascaded USRP CIC+HBF sections.
Regards, Firas http://www.nabble.com/file/8495/USRP%20HBF.JPG USRP HBF.JPG Matt wrote: > Hello, > > I can give you a precise MATLAB based simulated USRP frequency response. All > what I need is the HBF coefficients. So this is an open invitation to our > dear Matt to give us his designed USRP HBF coefficients or frequency > response. > > Firas, > The coefficients are here: http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/fpga/sdr_lib/hb/coeff_rom.v Matt Brian Padalino wrote: > > On 5/17/07, Eng. Firas <[EMAIL PROTECTED]> wrote: >> >> Hello, >> >> I can give you a precise MATLAB based simulated USRP frequency response. >> All >> what I need is the HBF coefficients. So this is an open invitation to our >> dear Matt to give us his designed USRP HBF coefficients or frequency >> response. > > Reading the documentation in the Verilog source file is helpful: > > http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/fpga/sdr_lib/hb/halfband_decim.v > > The coefficient ROM is located here: > > http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/fpga/sdr_lib/hb/coeff_rom.v > >> Firas > > Brian > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://www.nabble.com/wise-big-block-interleaving-in-GNURadio-tf3768964.html#a10667330 Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio