Hi, I try to demodulate a file of a transmit signal file (from matlab). But I can not get the correct message. Therefore I need your suggestion.
Below is the code Thanks Makmur #!/usr/bin/env python from gnuradio import gr from gnuradio.eng_option import eng_option from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import wx class coba_demod(grc_wxgui.top_block_gui): def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Demodulasi transmit signal") ################################################## # Variables ################################################## self.samp_rate = samp_rate = 32000 ################################################## # Blocks ################################################## self.gr_diff_decoder_bb_0 = gr.diff_decoder_bb(5) self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, "/home/makmur/datacoba") self.gr_file_source_0 = gr.file_source(gr.sizeof_char*1, "/home/makmur/transmit_signal.mat", False) self.gr_throttle_0 = gr.throttle(gr.sizeof_char*1, samp_rate) ################################################## # Connections ################################################## self.connect((self.gr_file_source_0, 0), (self.gr_throttle_0, 0)) self.connect((self.gr_throttle_0, 0), (self.gr_diff_decoder_bb_0, 0)) self.connect((self.gr_diff_decoder_bb_0, 0), (self.gr_file_sink_0, 0)) def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate if __name__ == '__main__': parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() tb = coba_demod() tb.Run(True)
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