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00023 #ifndef INCLUDED_GR_CLOCK_RECOVERY_MM_CC_H
00024 #define INCLUDED_GR_CLOCK_RECOVERY_MM_CC_H
00025
00026 #include <gr_block.h>
00027 #include <gr_complex.h>
00028 #include <gr_math.h>
00029
00030 class gri_mmse_fir_interpolator_cc;
00031
00032 class gr_clock_recovery_mm_cc;
00033 typedef boost::shared_ptr<gr_clock_recovery_mm_cc> gr_clock_recovery_mm_cc_sptr;
00034
00035
00036 gr_clock_recovery_mm_cc_sptr
00037 gr_make_clock_recovery_mm_cc (float omega, float gain_omega, float mu, float gain_mu,
00038 float omega_relative_limit=0.001);
00039
00040
00041
00042
00043
00044
00045
00046
00047
00048
00049
00050
00051 class gr_clock_recovery_mm_cc : public gr_block
00052 {
00053 public:
00054 ~gr_clock_recovery_mm_cc ();
00055 void forecast(int noutput_items, gr_vector_int &ninput_items_required);
00056 int general_work (int noutput_items,
00057 gr_vector_int &ninput_items,
00058 gr_vector_const_void_star &input_items,
00059 gr_vector_void_star &output_items);
00060 float mu() const { return d_mu;}
00061 float omega() const { return d_omega;}
00062 float gain_mu() const { return d_gain_mu;}
00063 float gain_omega() const { return d_gain_omega;}
00064 void set_verbose (bool verbose) { d_verbose = verbose; }
00065
00066 void set_gain_mu (float gain_mu) { d_gain_mu = gain_mu; }
00067 void set_gain_omega (float gain_omega) { d_gain_omega = gain_omega; }
00068 void set_mu (float mu) { d_mu = mu; }
00069 void set_omega (float omega) {
00070 d_omega = omega;
00071 d_min_omega = omega*(1.0 - d_omega_relative_limit);
00072 d_max_omega = omega*(1.0 + d_omega_relative_limit);
00073 d_omega_mid = 0.5*(d_min_omega+d_max_omega);
00074 }
00075
00076 protected:
00077 gr_clock_recovery_mm_cc (float omega, float gain_omega, float mu, float gain_mu,
00078 float omega_relative_limi);
00079
00080 private:
00081 float d_mu;
00082 float d_omega;
00083 float d_gain_omega;
00084 float d_min_omega;
00085 float d_max_omega;
00086 float d_omega_relative_limit;
00087 float d_omega_mid;
00088 float d_gain_mu;
00089 gr_complex d_last_sample;
00090 gri_mmse_fir_interpolator_cc *d_interp;
00091 bool d_verbose;
00092
00093 gr_complex d_p_2T;
00094 gr_complex d_p_1T;
00095 gr_complex d_p_0T;
00096
00097 gr_complex d_c_2T;
00098 gr_complex d_c_1T;
00099 gr_complex d_c_0T;
00100
00101 gr_complex slicer_0deg (gr_complex sample);
00102 gr_complex slicer_45deg (gr_complex sample);
00103
00104 friend gr_clock_recovery_mm_cc_sptr
00105 gr_make_clock_recovery_mm_cc (float omega, float gain_omega, float mu, float gain_mu,
00106 float omega_relative_limit);
00107 };
00108
00109 #endif