Working bpsk_costas_loop_cc
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3 changed files with 6 additions and 3 deletions
1
csdr.c
1
csdr.c
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@ -2778,6 +2778,7 @@ int main(int argc, char *argv[])
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sscanf(argv[4],"%f",&gain);
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int decision_directed = !!(argc>5 && (!strcmp(argv[5], "--dd") || !strcmp(argv[5], "--decision_directed")));
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if(decision_directed) fprintf(stderr, "csdr bpsk_costas_loop_cc: decision directed mode\n");
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bpsk_costas_loop_state_t state;
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init_bpsk_costas_loop_cc(&state, decision_directed, damping_factor, loop_bandwidth, gain);
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@ -140,7 +140,7 @@
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</param>
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<param>
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<key>value</key>
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<value>0</value>
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<value>10</value>
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</param>
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<param>
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<key>_enabled</key>
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@ -180,7 +180,7 @@
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</param>
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<param>
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<key>num_steps</key>
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<value>100</value>
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<value>1000</value>
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</param>
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<param>
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<key>style</key>
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@ -693,7 +693,7 @@
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</param>
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<param>
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<key>commandline</key>
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<value>csdr bpsk_costas_loop_cc $(csdr =2*pi/100) 0.707 1 </value>
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<value>csdr bpsk_costas_loop_cc $(csdr =2*pi/100) 0.707 300 --dd 2>/tmp/cout</value>
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</param>
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<param>
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<key>comment</key>
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@ -2100,10 +2100,12 @@ void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk
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else error = iof(output,i)*qof(output,i);
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s->dphase = error * s->alpha + s->iir_temp;
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s->iir_temp += error * s->beta;
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fprintf(stderr, " error = %f, dphase = %f, nco_phase = %f\n", error, s->dphase, s->nco_phase);
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//step NCO
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s->nco_phase += s->dphase;
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while(s->nco_phase>2*PI) s->nco_phase-=2*PI;
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while(s->nco_phase<=0) s->nco_phase+=2*PI;
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}
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}
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