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From: | Achilleas Anastasopoulos |
Subject: | [Discuss-gnuradio] atsc_cpll *almost* works |
Date: | Thu, 22 May 2008 11:41:37 -0400 |
User-agent: | Mozilla Thunderbird 1.0.2 (Windows/20050317) |
Chuck, Isn't this line > gr_complex filtered_IQ = afc.filter(gr_complex(I,Q)); supposed to be > gr_complex filtered_IQ = afc.filter(IQ); instead? Achilleas
Almost working: gr_complex input = agc.scale(in[k]); gr_sincosf(d_phase,&a_sin,&a_cos); gr_complex IQ = input * gr_complex(a_cos,-a_sin); out[k] = IQ.real(); gr_complex filtered_IQ = afc.filter(gr_complex(I,Q)); float x = phase_detector(filtered_IQ,0); static const float alpha = 0.001; static const float beta = alpha * alpha / 4; d_freq = d_freq + beta * x; d_phase = mod_2pi(d_phase + d_freq + alpha * x);
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