diff options
Diffstat (limited to 'src/lib/gsm_receiver_cf.h')
| -rw-r--r-- | src/lib/gsm_receiver_cf.h | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/src/lib/gsm_receiver_cf.h b/src/lib/gsm_receiver_cf.h index 0e287c5..ccc99fb 100644 --- a/src/lib/gsm_receiver_cf.h +++ b/src/lib/gsm_receiver_cf.h @@ -65,20 +65,25 @@ class gsm_receiver_cf : public gr_block { private: - gr_feval_dd *d_tuner; const int d_OSR; + gr_complex d_sch_training_seq[N_SYNC_BITS]; //encoded training sequence of a SCH burst + + gr_feval_dd *d_tuner; int d_counter; + + //variables used to store result of the find_fcch_burst fuction int d_fcch_start_pos; - float d_prev_freq_offset; - circular_buffer_float d_phase_diff_buffer; - double d_x_temp, d_x2_temp, d_mean; - int d_fcch_count; + float d_freq_offset; double d_best_sum; - gr_complex d_sch_training_seq[N_SYNC_BITS]; //encoded training sequence of a SCH burst + int d_fcch_count; + + bool d_first; +// int d_fcch_count; +// double d_x_temp, d_x2_temp, d_mean; enum states { - fcch_search, sch_search + first_fcch_search, next_fcch_search, sch_search, read_bcch } d_state; friend gsm_receiver_cf_sptr gsm_make_receiver_cf(gr_feval_dd *tuner, int osr); @@ -87,9 +92,12 @@ class gsm_receiver_cf : public gr_block bool find_fcch_burst(const gr_complex *in, const int nitems); double compute_freq_offset(); void set_frequency(double freq_offset); + inline float compute_phase_diff(gr_complex val1, gr_complex val2); + bool find_sch_burst(const gr_complex *in, const int nitems , float *out); void gmsk_mapper(const int * input, gr_complex * gmsk_output, int ninput); gr_complex correlation(const gr_complex * sequence, const gr_complex * input_signal, int ninput); + public: ~gsm_receiver_cf(); |