Hello, I am trying to create an ook modulation and demodulation block. So far, I have created a block similar to the bpsk block. I changed my constellations points to 1+0j and 0+0j. I want a rectangular pulse to be transmitted for a 1 and nothing for 0. I was told I could do this by changing the raise_root_cosine filter used in the generic_mod_demod.py to a LPF filter. I am unsure how to do this. Could any one help? I would greatly appreciate any help. Thank you for your time and help. Sam -- View this message in context: http://gnuradio.4.n7.nabble.com/OOK-Mod-and-Demod-... Sent from the GnuRadio mailing list archive at Nabble.com.
on 2012-11-08 20:25
on 2012-11-09 02:31
On Thu, Nov 8, 2012 at 2:24 PM, sibar002 <email@example.com> wrote: > Sam Line 137 in generic_mod_demod.py is where the RRC filter taps are created for the transmitter. Change from using a gr.firdes.root_raised_cosine to gr.firdes.low_pass_2. Use this page for details of what the arguments to the low_pass_2 filter generator function are: http://gnuradio.org/doc/doxygen/classgr_1_1filter_... Tom