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Made new bpsk_costas_loop_cc, added add_const_cc, added new parameters to timing_recvery_cc

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This commit is contained in:
ha7ilm 2017-05-02 18:37:54 +02:00
parent 84d23227f3
commit efbe28cbfd
5 changed files with 302 additions and 650 deletions
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2
Makefile
View file

@ -98,3 +98,5 @@ emcc-beautify:
bash -c 'type js-beautify >/dev/null 2>&1; if [ $$? -eq 0 ]; then js-beautify sdr.js/sdr.js >sdr.js/sdr.js.beautiful; mv sdr.js/sdr.js.beautiful sdr.js/sdr.js; fi' bash -c 'type js-beautify >/dev/null 2>&1; if [ $$? -eq 0 ]; then js-beautify sdr.js/sdr.js >sdr.js/sdr.js.beautiful; mv sdr.js/sdr.js.beautiful sdr.js/sdr.js; fi'
codequality: codequality:
@bash -c 'if [ `cat csdr.c | grep badsyntax | grep -v return | wc -l` -ne 1 ]; then echo "error at code quality check: badsyntax() used in csdr.c without return."; exit 1; else exit 0; fi' @bash -c 'if [ `cat csdr.c | grep badsyntax | grep -v return | wc -l` -ne 1 ]; then echo "error at code quality check: badsyntax() used in csdr.c without return."; exit 1; else exit 0; fi'
v:
vim csdr.c libcsdr.c

77
csdr.c
View file

@ -124,7 +124,7 @@ char usage[]=
" rtty_baudot2ascii_u8_u8\n" " rtty_baudot2ascii_u8_u8\n"
" serial_line_decoder_u8_u8\n" " serial_line_decoder_u8_u8\n"
" octave_complex_c <samples_to_plot> <out_of_n_samples>\n" " octave_complex_c <samples_to_plot> <out_of_n_samples>\n"
" timing_recovery_cc <algorithm> <decimation> [--add_q [--output_error | --output_indexes | --octave <debug_n>]] \n" " timing_recovery_cc <algorithm> <decimation> [mu [--add_q [--output_error | --output_indexes | --octave <debug_n>]]] \n"
" psk31_varicode_encoder_u8_u8\n" " psk31_varicode_encoder_u8_u8\n"
" psk31_varicode_decoder_u8_u8\n" " psk31_varicode_decoder_u8_u8\n"
" differential_encoder_u8_u8\n" " differential_encoder_u8_u8\n"
@ -133,7 +133,7 @@ char usage[]=
" psk_modulator_u8_c <n_psk>\n" " psk_modulator_u8_c <n_psk>\n"
" psk31_interpolate_sine_cc <interpolation>\n" " psk31_interpolate_sine_cc <interpolation>\n"
" duplicate_samples_ntimes_u8_u8 <sample_size_bytes> <ntimes>\n" " duplicate_samples_ntimes_u8_u8 <sample_size_bytes> <ntimes>\n"
" bpsk_costas_loop_cc <samples_per_bits>\n" " bpsk_costas_loop_cc <loop_bandwidth> <damping_factor> <gain> [--dd | --decision_directed]\n"
" binary_slicer_f_u8\n" " binary_slicer_f_u8\n"
" simple_agc_cc <rate> [reference [max_gain]]\n" " simple_agc_cc <rate> [reference [max_gain]]\n"
" firdes_resonator_c <rate> <length> [window [--octave]]\n" " firdes_resonator_c <rate> <length> [window [--octave]]\n"
@ -148,6 +148,7 @@ char usage[]=
" add_n_zero_samples_at_beginning_f <n_zero_samples>\n" " add_n_zero_samples_at_beginning_f <n_zero_samples>\n"
" generic_slicer_f_u8 <n_symbols>\n" " generic_slicer_f_u8 <n_symbols>\n"
" plain_interpolate_cc <n_symbols>\n" " plain_interpolate_cc <n_symbols>\n"
" add_const_cc <i> <q>\n"
" ?<search_the_function_list>\n" " ?<search_the_function_list>\n"
" =<evaluate_python_expression>\n" " =<evaluate_python_expression>\n"
" \n" " \n"
@ -396,7 +397,7 @@ int main(int argc, char *argv[])
clone_(the_bufsize); //After sending the buffer size out, just copy stdin to stdout clone_(the_bufsize); //After sending the buffer size out, just copy stdin to stdout
} }
if(!strcmp(argv[1],"clone")) if(!strcmp(argv[1],"clone") || !strcmp(argv[1],"REM"))
{ {
if(!sendbufsize(initialize_buffers())) return -2; if(!sendbufsize(initialize_buffers())) return -2;
clone_(the_bufsize); clone_(the_bufsize);
@ -2525,7 +2526,7 @@ int main(int argc, char *argv[])
} }
} }
if(!strcmp(argv[1],"timing_recovery_cc")) //<algorithm> <decimation> [--add_q [--output_error | --output_indexes | --octave <debug_n>]] if(!strcmp(argv[1],"timing_recovery_cc")) //<algorithm> <decimation> [loop_gain [max_error [--add_q] [--output_error | --output_indexes | --octave <debug_n>]]]
{ {
if(argc<=2) return badsyntax("need required parameter (algorithm)"); if(argc<=2) return badsyntax("need required parameter (algorithm)");
timing_recovery_algorithm_t algorithm = timing_recovery_get_algorithm_from_string(argv[2]); timing_recovery_algorithm_t algorithm = timing_recovery_get_algorithm_from_string(argv[2]);
@ -2536,26 +2537,32 @@ int main(int argc, char *argv[])
sscanf(argv[3],"%d",&decimation); sscanf(argv[3],"%d",&decimation);
if(decimation<=4 || decimation&3) return badsyntax("decimation factor should be a positive integer divisible by 4"); if(decimation<=4 || decimation&3) return badsyntax("decimation factor should be a positive integer divisible by 4");
int add_q = (argc>=5 && !strcmp(argv[4], "--add_q")); float loop_gain = 0.5;
if(argc>4) sscanf(argv[4],"%f",&loop_gain);
float max_error = 2;
if(argc>5) sscanf(argv[5],"%f",&max_error);
int add_q = !!(argc>=7 && !strcmp(argv[6], "--add_q"));
int debug_n = 0; int debug_n = 0;
int output_error = 0; int output_error = 0;
int output_indexes = 0; int output_indexes = 0;
if(argc>=7 && !strcmp(argv[5], "--octave")) debug_n = atoi(argv[6]); if(argc+add_q>=8 && !strcmp(argv[6+add_q], "--octave")) debug_n = atoi(argv[7+add_q]);
if(debug_n<0) return badsyntax("debug_n should be >= 0"); if(debug_n<0) return badsyntax("debug_n should be >= 0");
if(argc>=6 && !strcmp(argv[5], "--output_error")) output_error = 1; if(argc>=(8+add_q) && !strcmp(argv[7+add_q], "--output_error")) output_error = 1;
float* timing_error = NULL; float* timing_error = NULL;
if(output_error) timing_error = (float*)malloc(sizeof(float)*the_bufsize); if(output_error) timing_error = (float*)malloc(sizeof(float)*the_bufsize);
if(argc>=6 && !strcmp(argv[5], "--output_indexes")) output_indexes = 1; if(argc>=(8+add_q) && !strcmp(argv[7+add_q], "--output_indexes")) output_indexes = 1;
unsigned* sampled_indexes = NULL; unsigned* sampled_indexes = NULL;
if(output_indexes) sampled_indexes = (unsigned*)malloc(sizeof(float)*the_bufsize); if(output_indexes) sampled_indexes = (unsigned*)malloc(sizeof(float)*the_bufsize);
if(!initialize_buffers()) return -2; if(!initialize_buffers()) return -2;
sendbufsize(the_bufsize/decimation); sendbufsize(the_bufsize/decimation);
timing_recovery_state_t state = timing_recovery_init(algorithm, decimation, add_q); timing_recovery_state_t state = timing_recovery_init(algorithm, decimation, add_q, loop_gain, max_error);
int debug_i=0; int debug_i=0;
state.debug_writefiles = 1; state.debug_writefiles = 1;
@ -2756,14 +2763,24 @@ int main(int argc, char *argv[])
} }
} }
if(!strcmp(argv[1],"bpsk_costas_loop_cc")) //<samples_per_bits> if(!strcmp(argv[1],"bpsk_costas_loop_cc")) //<loop_bandwidth> <damping_factor> <gain> [--dd | --decision_directed]
{ {
float samples_per_bits; float loop_bandwidth;
if(argc<=2) return badsyntax("need required parameter (samples_per_bits)"); if(argc<=2) return badsyntax("need required parameter (loop_bandwidth)");
sscanf(argv[2],"%f",&samples_per_bits); sscanf(argv[2],"%f",&loop_bandwidth);
if(samples_per_bits<=0) return badsyntax("samples_per_bits should be > 0");
bpsk_costas_loop_state_t state = init_bpsk_costas_loop_cc(samples_per_bits); float damping_factor;
if(argc<=3) return badsyntax("need required parameter (damping_factor)");
sscanf(argv[3],"%f",&damping_factor);
float gain;
if(argc<=4) return badsyntax("need required parameter (gain)");
sscanf(argv[4],"%f",&gain);
int decision_directed = !!(argc>5 && (!strcmp(argv[5], "--dd") || !strcmp(argv[5], "--decision_directed")));
bpsk_costas_loop_state_t state;
init_bpsk_costas_loop_cc(&state, decision_directed, damping_factor, loop_bandwidth, gain);
if(!initialize_buffers()) return -2; if(!initialize_buffers()) return -2;
sendbufsize(the_bufsize); sendbufsize(the_bufsize);
@ -3083,13 +3100,17 @@ int main(int argc, char *argv[])
return 0; return 0;
} }
int output_size=0;
FREAD_C;
for(;;) for(;;)
{ {
FEOF_CHECK; FEOF_CHECK;
FREAD_C; output_size = apply_real_fir_cc((complexf*)input_buffer, (complexf*)output_buffer, the_bufsize, taps, num_taps);
apply_real_fir_cc((complexf*)input_buffer, (complexf*)output_buffer, the_bufsize, taps, num_taps); fwrite(output_buffer, sizeof(complexf), output_size, stdout);
FWRITE_C; //fprintf(stderr, "os = %d, is = %d, num_taps = %d\n", output_size, the_bufsize, num_taps);
TRY_YIELD; TRY_YIELD;
memmove((complexf*)input_buffer,((complexf*)input_buffer)+output_size,(the_bufsize-output_size)*sizeof(complexf));
fread(((complexf*)input_buffer)+(the_bufsize-output_size), sizeof(complexf), output_size, stdin);
} }
} }
@ -3128,6 +3149,26 @@ int main(int argc, char *argv[])
return 0; return 0;
} }
if(!strcmp(argv[1], "add_const_cc")) //<i> <q>
{
complexf x;
if(argc<=2) return badsyntax("required parameter <add_i> is missing.");
sscanf(argv[2],"%f",&iofv(x));
if(argc<=2) return badsyntax("required parameter <add_q> is missing.");
sscanf(argv[2],"%f",&qofv(x));
if(!sendbufsize(initialize_buffers())) return -2;
for(;;)
{
FEOF_CHECK;
FREAD_C;
add_const_cc((complexf*)input_buffer, (complexf*)output_buffer, the_bufsize, x);
FWRITE_C;
TRY_YIELD;
}
return 0;
}
if(!strcmp(argv[1],"none")) if(!strcmp(argv[1],"none"))
{ {
return 0; return 0;

756
grc_tests/test_bpsk_costas_loop.grc
View file

@ -89,7 +89,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(480, 3)</value> <value>(416, 3)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -207,7 +207,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(712, 571)</value> <value>(32, 275)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -235,7 +235,7 @@
</param> </param>
<param> <param>
<key>notebook</key> <key>notebook</key>
<value>nb, 1</value> <value></value>
</param> </param>
<param> <param>
<key>num_steps</key> <key>num_steps</key>
@ -270,7 +270,54 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>2**18</value> <value>2**13</value>
</param>
</block>
<block>
<key>analog_const_source_x</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>const</key>
<value>0</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(288, 203)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>analog_const_source_x_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param> </param>
</block> </block>
<block> <block>
@ -293,7 +340,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(16, 187)</value> <value>(40, 147)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -325,7 +372,7 @@
</param> </param>
<param> <param>
<key>type</key> <key>type</key>
<value>byte</value> <value>int</value>
</param> </param>
<param> <param>
<key>repeat</key> <key>repeat</key>
@ -333,7 +380,7 @@
</param> </param>
</block> </block>
<block> <block>
<key>blocks_complex_to_float</key> <key>blocks_add_const_vxx</key>
<param> <param>
<key>alias</key> <key>alias</key>
<value></value> <value></value>
@ -343,51 +390,8 @@
<value></value> <value></value>
</param> </param>
<param> <param>
<key>affinity</key> <key>const</key>
<value></value> <value>-1</value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(960, 265)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>blocks_complex_to_float_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
</block>
<block>
<key>blocks_interleave</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>blocksize</key>
<value>1</value>
</param>
<param>
<key>comment</key>
<value></value>
</param> </param>
<param> <param>
<key>affinity</key> <key>affinity</key>
@ -395,11 +399,11 @@
</param> </param>
<param> <param>
<key>_enabled</key> <key>_enabled</key>
<value>0</value> <value>True</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(1168, 265)</value> <value>(336, 131)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -407,7 +411,7 @@
</param> </param>
<param> <param>
<key>id</key> <key>id</key>
<value>blocks_interleave_0</value> <value>blocks_add_const_vxx_0</value>
</param> </param>
<param> <param>
<key>type</key> <key>type</key>
@ -421,17 +425,13 @@
<key>minoutbuf</key> <key>minoutbuf</key>
<value>0</value> <value>0</value>
</param> </param>
<param>
<key>num_streams</key>
<value>2</value>
</param>
<param> <param>
<key>vlen</key> <key>vlen</key>
<value>1</value> <value>1</value>
</param> </param>
</block> </block>
<block> <block>
<key>blocks_multiply_const_vxx</key> <key>blocks_float_to_complex</key>
<param> <param>
<key>alias</key> <key>alias</key>
<value></value> <value></value>
@ -440,10 +440,6 @@
<key>comment</key> <key>comment</key>
<value></value> <value></value>
</param> </param>
<param>
<key>const</key>
<value>amplitude</value>
</param>
<param> <param>
<key>affinity</key> <key>affinity</key>
<value></value> <value></value>
@ -454,7 +450,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(496, 155)</value> <value>(496, 161)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -462,11 +458,7 @@
</param> </param>
<param> <param>
<key>id</key> <key>id</key>
<value>blocks_multiply_const_vxx_0</value> <value>blocks_float_to_complex_0</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param> </param>
<param> <param>
<key>maxoutbuf</key> <key>maxoutbuf</key>
@ -481,6 +473,53 @@
<value>1</value> <value>1</value>
</param> </param>
</block> </block>
<block>
<key>blocks_int_to_float</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(200, 131)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>blocks_int_to_float_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>scale</key>
<value>0.5</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
</block>
<block> <block>
<key>blocks_throttle</key> <key>blocks_throttle</key>
<param> <param>
@ -501,7 +540,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(488, 211)</value> <value>(496, 355)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -556,7 +595,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(928, 537)</value> <value>(864, 345)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -587,73 +626,6 @@
<value>False</value> <value>False</value>
</param> </param>
</block> </block>
<block>
<key>digital_psk_mod</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>differential</key>
<value>True</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>excess_bw</key>
<value>0.35</value>
</param>
<param>
<key>_coordinate</key>
<value>(208, 179)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>mod_code</key>
<value>"none"</value>
</param>
<param>
<key>id</key>
<value>digital_psk_mod_0</value>
</param>
<param>
<key>log</key>
<value>False</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>constellation_points</key>
<value>2</value>
</param>
<param>
<key>samples_per_symbol</key>
<value>2</value>
</param>
<param>
<key>verbose</key>
<value>False</value>
</param>
</block>
<block> <block>
<key>freq_xlating_fir_filter_xxx</key> <key>freq_xlating_fir_filter_xxx</key>
<param> <param>
@ -662,7 +634,7 @@
</param> </param>
<param> <param>
<key>center_freq</key> <key>center_freq</key>
<value>-freq_add</value> <value>freq_add</value>
</param> </param>
<param> <param>
<key>comment</key> <key>comment</key>
@ -678,11 +650,11 @@
</param> </param>
<param> <param>
<key>_enabled</key> <key>_enabled</key>
<value>1</value> <value>True</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(688, 251)</value> <value>(232, 331)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -713,41 +685,6 @@
<value>ccc</value> <value>ccc</value>
</param> </param>
</block> </block>
<block>
<key>ha5kfu_execproc_sink_f</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>commandline</key>
<value>zsh -c \"csdr timing_recovery_cc GARDNER 16 --add_q --octave 1 1&gt;/dev/null 2&gt; &gt;(octave -i)\"</value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(976, 379)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>ha5kfu_execproc_sink_f_0</value>
</param>
</block>
<block> <block>
<key>ha5kfu_execproc_xx</key> <key>ha5kfu_execproc_xx</key>
<param> <param>
@ -756,7 +693,7 @@
</param> </param>
<param> <param>
<key>commandline</key> <key>commandline</key>
<value>csdr bpsk_costas_loop_cc 16</value> <value>csdr bpsk_costas_loop_cc $(csdr =2*pi/100) 0.707 1 </value>
</param> </param>
<param> <param>
<key>comment</key> <key>comment</key>
@ -772,7 +709,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(128, 411)</value> <value>(840, 163)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -795,286 +732,6 @@
<value>cc</value> <value>cc</value>
</param> </param>
</block> </block>
<block>
<key>ha5kfu_execproc_xx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>commandline</key>
<value>csdr timing_recovery_cc GARDNER 16 --add_q | csdr fir_interpolate_cc 8</value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(400, 411)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>ha5kfu_execproc_xx_0_0</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>type</key>
<value>cc</value>
</param>
</block>
<block>
<key>notebook</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(16, 83)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>id</key>
<value>nb</value>
</param>
<param>
<key>labels</key>
<value>['1', '2']</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>style</key>
<value>wx.NB_TOP</value>
</param>
</block>
<block>
<key>wxgui_fftsink2</key>
<param>
<key>avg_alpha</key>
<value>0</value>
</param>
<param>
<key>average</key>
<value>False</value>
</param>
<param>
<key>baseband_freq</key>
<value>0</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>freqvar</key>
<value>None</value>
</param>
<param>
<key>_coordinate</key>
<value>(960, 59)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>id</key>
<value>wxgui_fftsink2_0</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>peak_hold</key>
<value>False</value>
</param>
<param>
<key>ref_level</key>
<value>0</value>
</param>
<param>
<key>ref_scale</key>
<value>2.0</value>
</param>
<param>
<key>fft_rate</key>
<value>15</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>title</key>
<value>FFT Plot</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>win</key>
<value>None</value>
</param>
<param>
<key>y_divs</key>
<value>10</value>
</param>
<param>
<key>y_per_div</key>
<value>10</value>
</param>
</block>
<block>
<key>wxgui_scopesink2</key>
<param>
<key>ac_couple</key>
<value>False</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(632, 379)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>id</key>
<value>wxgui_scopesink2_0</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>num_inputs</key>
<value>1</value>
</param>
<param>
<key>samp_rate</key>
<value>(samp_rate/256)*8</value>
</param>
<param>
<key>t_scale</key>
<value>0</value>
</param>
<param>
<key>title</key>
<value>After timing recovery</value>
</param>
<param>
<key>trig_mode</key>
<value>wxgui.TRIG_MODE_AUTO</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>v_offset</key>
<value>0</value>
</param>
<param>
<key>v_scale</key>
<value>0</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>xy_mode</key>
<value>True</value>
</param>
<param>
<key>y_axis_label</key>
<value>Counts</value>
</param>
</block>
<block> <block>
<key>wxgui_scopesink2</key> <key>wxgui_scopesink2</key>
<param> <param>
@ -1099,7 +756,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(432, 507)</value> <value>(1104, 123)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -1115,7 +772,7 @@
</param> </param>
<param> <param>
<key>notebook</key> <key>notebook</key>
<value>nb, 0</value> <value></value>
</param> </param>
<param> <param>
<key>num_inputs</key> <key>num_inputs</key>
@ -1123,7 +780,7 @@
</param> </param>
<param> <param>
<key>samp_rate</key> <key>samp_rate</key>
<value>(samp_rate/256)*8</value> <value>samp_rate</value>
</param> </param>
<param> <param>
<key>t_scale</key> <key>t_scale</key>
@ -1131,7 +788,7 @@
</param> </param>
<param> <param>
<key>title</key> <key>title</key>
<value>BPSK modulated signal after Costas Loop</value> <value>After Costas Loop (csdr)</value>
</param> </param>
<param> <param>
<key>trig_mode</key> <key>trig_mode</key>
@ -1186,7 +843,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(1112, 491)</value> <value>(1112, 299)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -1200,93 +857,6 @@
<key>id</key> <key>id</key>
<value>wxgui_scopesink2_0_0_0</value> <value>wxgui_scopesink2_0_0_0</value>
</param> </param>
<param>
<key>notebook</key>
<value>nb, 1</value>
</param>
<param>
<key>num_inputs</key>
<value>1</value>
</param>
<param>
<key>samp_rate</key>
<value>(samp_rate/256)*8</value>
</param>
<param>
<key>t_scale</key>
<value>0</value>
</param>
<param>
<key>title</key>
<value>After Costas Loop</value>
</param>
<param>
<key>trig_mode</key>
<value>wxgui.TRIG_MODE_AUTO</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>v_offset</key>
<value>0</value>
</param>
<param>
<key>v_scale</key>
<value>0</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>xy_mode</key>
<value>True</value>
</param>
<param>
<key>y_axis_label</key>
<value>Counts</value>
</param>
</block>
<block>
<key>wxgui_scopesink2</key>
<param>
<key>ac_couple</key>
<value>False</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(688, 11)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>id</key>
<value>wxgui_scopesink2_0_1</value>
</param>
<param> <param>
<key>notebook</key> <key>notebook</key>
<value></value> <value></value>
@ -1305,7 +875,7 @@
</param> </param>
<param> <param>
<key>title</key> <key>title</key>
<value>BPSK modulated signal with frequency offset</value> <value>After Costas Loop (GNU Radio)</value>
</param> </param>
<param> <param>
<key>trig_mode</key> <key>trig_mode</key>
@ -1329,7 +899,7 @@
</param> </param>
<param> <param>
<key>xy_mode</key> <key>xy_mode</key>
<value>False</value> <value>True</value>
</param> </param>
<param> <param>
<key>y_axis_label</key> <key>y_axis_label</key>
@ -1337,38 +907,44 @@
</param> </param>
</block> </block>
<connection> <connection>
<source_block_id>analog_random_source_x_0</source_block_id> <source_block_id>analog_const_source_x_0</source_block_id>
<sink_block_id>digital_psk_mod_0</sink_block_id> <sink_block_id>blocks_float_to_complex_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_complex_to_float_0</source_block_id>
<sink_block_id>blocks_interleave_0</sink_block_id>
<source_key>1</source_key>
<sink_key>1</sink_key> <sink_key>1</sink_key>
</connection> </connection>
<connection> <connection>
<source_block_id>blocks_complex_to_float_0</source_block_id> <source_block_id>analog_random_source_x_0</source_block_id>
<sink_block_id>blocks_interleave_0</sink_block_id> <sink_block_id>blocks_int_to_float_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection> <connection>
<source_block_id>blocks_interleave_0</source_block_id> <source_block_id>blocks_add_const_vxx_0</source_block_id>
<sink_block_id>ha5kfu_execproc_sink_f_0</sink_block_id> <sink_block_id>blocks_float_to_complex_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection> <connection>
<source_block_id>blocks_multiply_const_vxx_0</source_block_id> <source_block_id>blocks_float_to_complex_0</source_block_id>
<sink_block_id>blocks_throttle_0</sink_block_id> <sink_block_id>freq_xlating_fir_filter_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_int_to_float_0</source_block_id>
<sink_block_id>blocks_add_const_vxx_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection> <connection>
<source_block_id>blocks_throttle_0</source_block_id> <source_block_id>blocks_throttle_0</source_block_id>
<sink_block_id>freq_xlating_fir_filter_xxx_0</sink_block_id> <sink_block_id>digital_costas_loop_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_throttle_0</source_block_id>
<sink_block_id>ha5kfu_execproc_xx_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
@ -1378,45 +954,9 @@
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection>
<source_block_id>digital_psk_mod_0</source_block_id>
<sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection> <connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id> <source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>blocks_complex_to_float_0</sink_block_id> <sink_block_id>blocks_throttle_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>digital_costas_loop_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>ha5kfu_execproc_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>wxgui_fftsink2_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
<sink_block_id>wxgui_scopesink2_0_1</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>ha5kfu_execproc_xx_0</source_block_id>
<sink_block_id>ha5kfu_execproc_xx_0_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
@ -1426,10 +966,4 @@
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection>
<source_block_id>ha5kfu_execproc_xx_0_0</source_block_id>
<sink_block_id>wxgui_scopesink2_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph> </flow_graph>

94
libcsdr.c
View file

@ -114,6 +114,16 @@ float (*firdes_get_window_kernel(window_t window))(float)
|___/ |___/
*/ */
void normalize_fir_f(float* input, float* output, int length)
{
//Normalize filter kernel
float sum=0;
for(int i=0;i<length;i++) //@normalize_fir_f: normalize pass 1
sum+=input[i];
for(int i=0;i<length;i++) //@normalize_fir_f: normalize pass 2
output[i]=input[i]/sum;
}
void firdes_lowpass_f(float *output, int length, float cutoff_rate, window_t window) void firdes_lowpass_f(float *output, int length, float cutoff_rate, window_t window)
{ //Generates symmetric windowed sinc FIR filter real taps { //Generates symmetric windowed sinc FIR filter real taps
// length should be odd // length should be odd
@ -128,17 +138,7 @@ void firdes_lowpass_f(float *output, int length, float cutoff_rate, window_t win
output[middle-i]=output[middle+i]=(sin(2*PI*cutoff_rate*i)/i)*window_function((float)i/middle); output[middle-i]=output[middle+i]=(sin(2*PI*cutoff_rate*i)/i)*window_function((float)i/middle);
//printf("%g %d %d %d %d | %g\n",output[middle-i],i,middle,middle+i,middle-i,sin(2*PI*cutoff_rate*i)); //printf("%g %d %d %d %d | %g\n",output[middle-i],i,middle,middle+i,middle-i,sin(2*PI*cutoff_rate*i));
} }
normalize_fir_f(output,output,length);
//Normalize filter kernel
float sum=0;
for(int i=0;i<length;i++) //@firdes_lowpass_f: normalize pass 1
{
sum+=output[i];
}
for(int i=0;i<length;i++) //@firdes_lowpass_f: normalize pass 2
{
output[i]/=sum;
}
} }
void firdes_bandpass_c(complexf *output, int length, float lowcut, float highcut, window_t window) void firdes_bandpass_c(complexf *output, int length, float lowcut, float highcut, window_t window)
@ -1930,11 +1930,13 @@ void octave_plot_point_on_cplxsig(complexf* signal, int signal_size, float error
free(points_color); free(points_color);
} }
timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q) timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q, float loop_gain, float max_error)
{ {
timing_recovery_state_t to_return; timing_recovery_state_t to_return;
to_return.algorithm = algorithm; to_return.algorithm = algorithm;
to_return.decimation_rate = decimation_rate; to_return.decimation_rate = decimation_rate;
to_return.loop_gain = loop_gain;
to_return.max_error = max_error;
to_return.use_q = use_q; to_return.use_q = use_q;
to_return.debug_phase = -1; to_return.debug_phase = -1;
to_return.debug_count = 3; to_return.debug_count = 3;
@ -1952,7 +1954,7 @@ void timing_recovery_trigger_debug(timing_recovery_state_t* state, int debug_pha
#define MTIMINGR_HDEBUG 0 #define MTIMINGR_HDEBUG 0
void timing_recovery_cc(complexf* input, complexf* output, int input_size, float* timing_error, int* sampled_indexes, timing_recovery_state_t* state) void timing_recovery_cc(complexf* input, complexf* output, int input_size, float* timing_error, int* sampled_indexes, timing_recovery_state_t* state)
{ {
//We always assume that the input starts at center of the first symbol cross before the first symbol. //We always assume that the input starts at center of the first symbol cross before the first symbol.
//Last time we consumed that much from the input samples that it is there. //Last time we consumed that much from the input samples that it is there.
@ -2015,8 +2017,8 @@ void timing_recovery_cc(complexf* input, complexf* output, int input_size, float
if(timing_error) timing_error[si-1]=error; //it is not written if NULL if(timing_error) timing_error[si-1]=error; //it is not written if NULL
if(error>2) error=2; if(error>state->max_error) error=state->max_error;
if(error<-2) error=-2; if(error<-state->max_error) error=-state->max_error;
if( state->debug_force || (state->debug_phase >= si && debug_i) ) if( state->debug_force || (state->debug_phase >= si && debug_i) )
{ {
debug_i--; debug_i--;
@ -2033,7 +2035,7 @@ void timing_recovery_cc(complexf* input, complexf* output, int input_size, float
0); 0);
} }
int error_sign = (state->algorithm == TIMING_RECOVERY_ALGORITHM_GARDNER) ? -1 : 1; int error_sign = (state->algorithm == TIMING_RECOVERY_ALGORITHM_GARDNER) ? -1 : 1;
correction_offset = num_samples_halfbit * error_sign * (error/2); correction_offset = num_samples_halfbit * error_sign * error * state->loop_gain;
current_bitstart_index += num_samples_bit + correction_offset; current_bitstart_index += num_samples_bit + correction_offset;
if(si>=input_size) if(si>=input_size)
{ {
@ -2067,6 +2069,45 @@ char* timing_recovery_get_string_from_algorithm(timing_recovery_algorithm_t algo
return "INVALID"; return "INVALID";
} }
void init_bpsk_costas_loop_cc(bpsk_costas_loop_state_t* s, int decision_directed, float damping_factor, float bandwidth, float gain)
{
float bandwidth_omega = 2*M_PI*bandwidth;
s->alpha = (damping_factor*2*bandwidth_omega)/gain;
float sampling_rate = 1; //the bandwidth is normalized to the sampling rate
s->beta = (bandwidth_omega*bandwidth_omega)/(sampling_rate*gain);
s->iir_temp = s->dphase = s->nco_phase = 0;
}
void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* s)
{
for(int i=0;i<input_size;i++)
{
complexf nco_sample;
e_powj(&nco_sample, -s->nco_phase);
cmult(&output[i], &input[i], &nco_sample);
float error = 0;
if(s->decision_directed)
{
float output_phase = atan2(qof(output,i),iof(output,i));
if (fabs(output_phase)<PI/2)
error = -output_phase;
else
{
error = PI-output_phase;
while(error>PI) error -= 2*PI;
}
}
else error = iof(output,i)*qof(output,i);
s->dphase = error * s->alpha + s->iir_temp;
s->iir_temp += error * s->beta;
//step NCO
s->nco_phase += s->dphase;
while(s->nco_phase>2*PI) s->nco_phase-=2*PI;
}
}
#if 0
bpsk_costas_loop_state_t init_bpsk_costas_loop_cc(float samples_per_bits) bpsk_costas_loop_state_t init_bpsk_costas_loop_cc(float samples_per_bits)
{ {
bpsk_costas_loop_state_t state; bpsk_costas_loop_state_t state;
@ -2088,7 +2129,7 @@ bpsk_costas_loop_state_t init_bpsk_costas_loop_cc(float samples_per_bits)
return state; return state;
} }
void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* state) void bpsk_costas_loop_c1mc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* state)
{ {
int debug = 0; int debug = 0;
if(debug) fprintf(stderr, "costas:\n"); if(debug) fprintf(stderr, "costas:\n");
@ -2122,6 +2163,8 @@ void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk
} }
} }
#endif
void simple_agc_cc(complexf* input, complexf* output, int input_size, float rate, float reference, float max_gain, float* current_gain) void simple_agc_cc(complexf* input, complexf* output, int input_size, float rate, float reference, float max_gain, float* current_gain)
{ {
float rate_1minus=1-rate; float rate_1minus=1-rate;
@ -2205,8 +2248,8 @@ int apply_real_fir_cc(complexf* input, complexf* output, int input_size, float*
float acci = 0, accq = 0; float acci = 0, accq = 0;
for(int ti=0;ti<taps_length;ti++) for(int ti=0;ti<taps_length;ti++)
{ {
acci += iof(input,i)*taps[ti]; acci += iof(input,i+ti)*taps[ti];
accq += qof(input,i)*taps[ti]; accq += qof(input,i+ti)*taps[ti];
} }
iof(output,i)=acci; iof(output,i)=acci;
qof(output,i)=accq; qof(output,i)=accq;
@ -2365,6 +2408,8 @@ int firdes_cosine_f(float* taps, int taps_length, int samples_per_symbol)
//needs a taps_length 2 × samples_per_symbol + 1 //needs a taps_length 2 × samples_per_symbol + 1
int middle_i=taps_length/2; int middle_i=taps_length/2;
for(int i=0;i<samples_per_symbol;i++) taps[middle_i+i]=taps[middle_i-i]=(1+cos(PI*i/(float)samples_per_symbol))/2; for(int i=0;i<samples_per_symbol;i++) taps[middle_i+i]=taps[middle_i-i]=(1+cos(PI*i/(float)samples_per_symbol))/2;
//for(int i=0;i<taps_length;i++) taps[i]=powf(taps[i],2);
normalize_fir_f(taps, taps, taps_length);
} }
int firdes_rrc_f(float* taps, int taps_length, int samples_per_symbol, float beta) int firdes_rrc_f(float* taps, int taps_length, int samples_per_symbol, float beta)
@ -2381,6 +2426,7 @@ int firdes_rrc_f(float* taps, int taps_length, int samples_per_symbol, float bet
(sin(PI*(i/(float)samples_per_symbol)*(1-beta)) + 4*beta*(i/(float)samples_per_symbol)*cos(PI*(i/(float)samples_per_symbol)*(1+beta)))/ (sin(PI*(i/(float)samples_per_symbol)*(1-beta)) + 4*beta*(i/(float)samples_per_symbol)*cos(PI*(i/(float)samples_per_symbol)*(1+beta)))/
(PI*(i/(float)samples_per_symbol)*(1-powf(4*beta*(i/(float)samples_per_symbol),2))); (PI*(i/(float)samples_per_symbol)*(1-powf(4*beta*(i/(float)samples_per_symbol),2)));
} }
normalize_fir_f(taps, taps, taps_length);
} }
void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation) void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation)
@ -2407,6 +2453,15 @@ float* add_ff(float* input1, float* input2, float* output, int input_size)
for(int i=0;i<input_size;i++) output[i]=input1[i]+input2[i]; for(int i=0;i<input_size;i++) output[i]=input1[i]+input2[i];
} }
float* add_const_cc(complexf* input, complexf* output, int input_size, complexf x)
{
for(int i=0;i<input_size;i++)
{
iof(output,i)=iof(input,i)+iofv(x);
qof(output,i)=iof(input,i)+qofv(x);
}
}
int trivial_vectorize() int trivial_vectorize()
{ {
//this function is trivial to vectorize and should pass on both NEON and SSE //this function is trivial to vectorize and should pass on both NEON and SSE
@ -2417,4 +2472,3 @@ int trivial_vectorize()
} }
return c[0]; return c[0];
} }
void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation);

23
libcsdr.h
View file

@ -331,9 +331,11 @@ typedef struct timing_recovery_state_s
int debug_writefiles; int debug_writefiles;
int last_correction_offset; int last_correction_offset;
float earlylate_ratio; float earlylate_ratio;
float loop_gain;
float max_error;
} timing_recovery_state_t; } timing_recovery_state_t;
timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q); timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q, float loop_gain, float max_error);
void timing_recovery_cc(complexf* input, complexf* output, int input_size, float* timing_error, int* sampled_indexes, timing_recovery_state_t* state); void timing_recovery_cc(complexf* input, complexf* output, int input_size, float* timing_error, int* sampled_indexes, timing_recovery_state_t* state);
timing_recovery_algorithm_t timing_recovery_get_algorithm_from_string(char* input); timing_recovery_algorithm_t timing_recovery_get_algorithm_from_string(char* input);
char* timing_recovery_get_string_from_algorithm(timing_recovery_algorithm_t algorithm); char* timing_recovery_get_string_from_algorithm(timing_recovery_algorithm_t algorithm);
@ -346,6 +348,7 @@ void pack_bits_8to1_u8_u8(unsigned char* input, unsigned char* output, int input
void psk31_varicode_encoder_u8_u8(unsigned char* input, unsigned char* output, int input_size, int output_max_size, int* input_processed, int* output_size); void psk31_varicode_encoder_u8_u8(unsigned char* input, unsigned char* output, int input_size, int output_max_size, int* input_processed, int* output_size);
unsigned char differential_codec(unsigned char* input, unsigned char* output, int input_size, int encode, unsigned char state); unsigned char differential_codec(unsigned char* input, unsigned char* output, int input_size, int encode, unsigned char state);
#if 0
typedef struct bpsk_costas_loop_state_s typedef struct bpsk_costas_loop_state_s
{ {
float rc_filter_alpha; float rc_filter_alpha;
@ -358,6 +361,21 @@ typedef struct bpsk_costas_loop_state_s
bpsk_costas_loop_state_t init_bpsk_costas_loop_cc(float samples_per_bits); bpsk_costas_loop_state_t init_bpsk_costas_loop_cc(float samples_per_bits);
void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* state); void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* state);
#endif
typedef struct bpsk_costas_loop_state_s
{
float alpha;
float beta;
int decision_directed;
float iir_temp;
float dphase;
float nco_phase;
} bpsk_costas_loop_state_t;
void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation);
void bpsk_costas_loop_cc(complexf* input, complexf* output, int input_size, bpsk_costas_loop_state_t* state);
void simple_agc_cc(complexf* input, complexf* output, int input_size, float rate, float reference, float max_gain, float* current_gain); void simple_agc_cc(complexf* input, complexf* output, int input_size, float rate, float reference, float max_gain, float* current_gain);
void firdes_add_resonator_c(complexf* output, int length, float rate, window_t window, int add, int normalize); void firdes_add_resonator_c(complexf* output, int length, float rate, window_t window, int add, int normalize);
int apply_fir_cc(complexf* input, complexf* output, int input_size, complexf* taps, int taps_length); int apply_fir_cc(complexf* input, complexf* output, int input_size, complexf* taps, int taps_length);
@ -385,3 +403,6 @@ matched_filter_type_t matched_filter_get_type_from_string(char* input);
int apply_real_fir_cc(complexf* input, complexf* output, int input_size, float* taps, int taps_length); int apply_real_fir_cc(complexf* input, complexf* output, int input_size, float* taps, int taps_length);
void generic_slicer_f_u8(float* input, unsigned char* output, int input_size, int n_symbols); void generic_slicer_f_u8(float* input, unsigned char* output, int input_size, int n_symbols);
void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation);; void plain_interpolate_cc(complexf* input, complexf* output, int input_size, int interpolation);;
void normalize_fir_f(float* input, float* output, int length);
void init_bpsk_costas_loop_cc(bpsk_costas_loop_state_t* s, int decision_directed, float damping_factor, float bandwidth, float gain);
float* add_const_cc(complexf* input, complexf* output, int input_size, complexf x);