[Discuss-gnuradio] amplitude coded square wave

[Yan Nie]

Hi all,
 
 I'm trying to generating a square wave, the amplitude of each chip the square wave is coded by a 113-bit legendre code respectively. 
 
 The following code is generating a source for legendre code:
 #ls 113-bit
    bits = (1,0,0,1, 0,0,0,1, 0,1,1,1, 1,0,1,0,
                       1,1,1,0, 0,1,0,1, 1,0,1,1, 0,1,0,0,
                       1,1,1,0, 1,0,1,1, 1,1,0,1, 0,0,0,1,
                       0,0,1,1, 0,1,0,1, 1,1,0,0, 0,1,0,0,
                       0,0,1,0, 0,1,0,0, 0,0,1,1, 1,1,1,0,
                       0,1,1,0, 0,1,1,1, 1,0,1,0, 0,0,1,0,
                       0,1,0,0, 0,0,1,0, 0,0,1,1, 1,0,1,0,
                       1)
    in_data = gr.vector_source_b(self._bits, True )
 
     # Map to constellation
     constellation = [-1, 1]
     mapper = gr.chunks_to_symbols_bf(self._constellation)
 
 And the sig_source is used to generate a square wave :
 #generate square wave
     self.sqr = gr.sig_source_f(if_rate, gr.GR_CONST_WAVE, options.rate,   options.amplitude,0)
 
 Is there any approach could code the amplitude of each chip of the square wave to be the source code?
 
 Looking forward to your help 
 Thank you so much!
 
 Regards,
 Yan

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