Working bpsk_costas_loop_cc

This commit is contained in:
ha7ilm 2017-05-02 19:23:05 +02:00
parent efbe28cbfd
commit 36eb0c3481
3 changed files with 6 additions and 3 deletions

1
csdr.c
View file

@ -2778,6 +2778,7 @@ int main(int argc, char *argv[])
sscanf(argv[4],"%f",&gain);
int decision_directed = !!(argc>5 && (!strcmp(argv[5], "--dd") || !strcmp(argv[5], "--decision_directed")));
if(decision_directed) fprintf(stderr, "csdr bpsk_costas_loop_cc: decision directed mode\n");
bpsk_costas_loop_state_t state;
init_bpsk_costas_loop_cc(&state, decision_directed, damping_factor, loop_bandwidth, gain);

View file

@ -140,7 +140,7 @@
</param>
<param>
<key>value</key>
<value>0</value>
<value>10</value>
</param>
<param>
<key>_enabled</key>
@ -180,7 +180,7 @@
</param>
<param>
<key>num_steps</key>
<value>100</value>
<value>1000</value>
</param>
<param>
<key>style</key>
@ -693,7 +693,7 @@
</param>
<param>
<key>commandline</key>
<value>csdr bpsk_costas_loop_cc $(csdr =2*pi/100) 0.707 1 </value>
<value>csdr bpsk_costas_loop_cc $(csdr =2*pi/100) 0.707 300 --dd 2&gt;/tmp/cout</value>
</param>
<param>
<key>comment</key>

View file

@ -2100,10 +2100,12 @@ void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk
else error = iof(output,i)*qof(output,i);
s->dphase = error * s->alpha + s->iir_temp;
s->iir_temp += error * s->beta;
fprintf(stderr, " error = %f, dphase = %f, nco_phase = %f\n", error, s->dphase, s->nco_phase);
//step NCO
s->nco_phase += s->dphase;
while(s->nco_phase>2*PI) s->nco_phase-=2*PI;
while(s->nco_phase<=0) s->nco_phase+=2*PI;
}
}