kopia lustrzana https://github.com/ha7ilm/csdr
Added agwn_cc
ha7ilm
rodzic
e31c7648a5
commit
57790eb9af
34
README.md
34
README.md
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@ -832,7 +832,7 @@ For this input, the output of `psk31_varicode_encoder_u8_u8` will be the followi
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Syntax:
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repeat_u8 <taps_length> [resonator_rate × N]\n"
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csdr repeat_u8 <taps_length> [resonator_rate × N]\n"
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It repeatedly outputs a set of data bytes (given with decimal numbers).
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@ -845,6 +845,28 @@ For example, `csdr repeat_u8 1 1 0 0` will output:
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----
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### [noise_f](#noise_f)
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Syntax:
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csdr noise_f
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It outputs white noise within the range [-1.0, 1.0].
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----
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### [awgn_cc](#awgn_cc)
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Syntax:
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csdr awgn_cc <snr_db> [--snrshow]
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It adds white noise with the given SNR to a signal assumed to be of 0 dB power.
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If the `--snrshow` switch is given, it also shows the actual SNR based on the calculated power of signal and noise components.
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----
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### [?](#search_the_function_list)
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Syntax:
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@ -879,6 +901,16 @@ Another solution is using single quotes to wrap the expression:
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csdr shift_addition_cc $(csdr '=(1200+300)/2400000.')
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Current version of `csdr` executes the following python script for this function:
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```python
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import os, sys
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from math import *
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print <evaluate_python_expression>
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```
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This means that one can also call math functions like `sqrt()`.
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#### Control via pipes
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Some parameters can be changed while the `csdr` process is running. To achieve this, some `csdr` functions have special parameters. You have to supply a fifo previously created by the `mkfifo` command. Processing will only start after the first control command has been received by `csdr` over the FIFO.
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46
csdr.c
46
csdr.c
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@ -140,6 +140,8 @@ char usage[]=
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" firdes_resonator_c <rate> <length> [window [--octave]]\n"
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" resonators_fir_cc <taps_length> [resonator_rate × N]\n"
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" repeat_u8 <data_bytes × N>\n"
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" noise_f\n"
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" awgn_cc <snr_db> [--snrshow]\n"
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" ?<search_the_function_list>\n"
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" =<evaluate_python_expression>\n"
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" \n"
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@ -2892,25 +2894,55 @@ int main(int argc, char *argv[])
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if(!strcmp(argv[1], "awgn_cc"))
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{
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if(argc<=2) badsyntax("no data to repeat");
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FILE* urandom = init_get_random_samples_f();
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if(argc<=2) badsyntax("required parameter <snr_db> is missing.");
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float snr_db = 0;
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sscanf(argv[2],"%f",&snr_db);
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int snrshow = 0;
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if(argc>=4 && !strcmp(argv[3],"--snrshow")) snrshow = 1;
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float signal_amplitude_per_noise = pow(10,snr_db/20);
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float a_signal=signal_amplitude_per_noise/(signal_amplitude_per_noise+1.0);
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float a_noise=1.0/(signal_amplitude_per_noise+1.0);
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fprintf(stderr, "csdr awgn_cc: a_signal = %f, a_noise = %f\n", a_signal, a_noise);
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if(!initialize_buffers()) return -2;
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sendbufsize(the_bufsize);
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complexf* awgn_buffer = (complexf*)malloc(sizeof(complexf)*the_bufsize);
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for(;;)
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{
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FEOF_CHECK;
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FREAD_C;
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//get_awgn_samples_f((float*)awgn_buffer, the_bufsize*2, urandom);
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get_random_gaussian_samples_c(awgn_buffer, the_bufsize, urandom);
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/*if(snrshow)
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{
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float power_signal = total_logpower_cf((complexf*)input_buffer, the_bufsize);
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float power_noise = total_logpower_cf(awgn_buffer, the_bufsize);
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fprintf(stderr, "csdr awgn_cc: at the beginning, power_signal = %f dB, power_noise = %f dB\n", power_signal, power_noise);
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}*/
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gain_ff(input_buffer, input_buffer, the_bufsize*2, a_signal);
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gain_ff((float*)awgn_buffer, (float*)awgn_buffer, the_bufsize*2, a_noise*0.707);
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if(snrshow)
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{
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float power_signal = total_logpower_cf((complexf*)input_buffer, the_bufsize);
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float power_noise = total_logpower_cf(awgn_buffer, the_bufsize);
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//fprintf(stderr, "csdr awgn_cc: after gain_ff, power_signal = %f dB, power_noise = %f dB\n", power_signal, power_noise);
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fprintf(stderr, "csdr awgn_cc: SNR = %f dB\n", power_signal - power_noise);
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}
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add_ff(input_buffer, (float*)awgn_buffer, (float*)output_buffer, the_bufsize*2);
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FWRITE_C;
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TRY_YIELD;
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}
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}
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if(!strcmp(argv[1], "noise_f"))
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if(!strcmp(argv[1], "uniform_noise_f"))
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{
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FILE* urandom = init_get_awgn_samples_f();
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FILE* urandom = init_get_random_samples_f();
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if(!initialize_buffers()) return -2;
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sendbufsize(the_bufsize);
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for(;;)
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{
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FEOF_CHECK;
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get_awgn_samples_f(output_buffer, the_bufsize, urandom);
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get_random_samples_f(output_buffer, the_bufsize, urandom);
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FWRITE_R;
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TRY_YIELD;
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}
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@ -2933,7 +2965,7 @@ int main(int argc, char *argv[])
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if(argv[1][0]=='=')
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{
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char buffer[100];
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snprintf(buffer, 100-1, "python -c \"print %s\"", argv[1]+1);
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snprintf(buffer, 100-1, "python -c \"import os, sys\nfrom math import *\nprint %s\"", argv[1]+1);
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system(buffer);
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return 0;
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}
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@ -0,0 +1,669 @@
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<?xml version='1.0' encoding='utf-8'?>
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<?grc format='1' created='3.7.8'?>
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<flow_graph>
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<timestamp>Sun Nov 16 15:12:31 2014</timestamp>
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<block>
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<key>options</key>
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<param>
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<key>author</key>
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<value></value>
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</param>
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<param>
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<key>window_size</key>
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<value>1280, 1024</value>
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</param>
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<param>
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<key>category</key>
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<value>Custom</value>
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</param>
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<param>
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<key>comment</key>
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<value></value>
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</param>
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<param>
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<key>description</key>
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<value></value>
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</param>
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<param>
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<key>_enabled</key>
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<value>True</value>
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</param>
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||||
<param>
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<key>_coordinate</key>
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<value>(10, 10)</value>
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||||
</param>
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<param>
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<key>_rotation</key>
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||||
<value>0</value>
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||||
</param>
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||||
<param>
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||||
<key>generate_options</key>
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<value>wx_gui</value>
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||||
</param>
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<param>
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<key>id</key>
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||||
<value>top_block</value>
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||||
</param>
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||||
<param>
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<key>max_nouts</key>
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<value>0</value>
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</param>
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<param>
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<key>realtime_scheduling</key>
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<value></value>
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</param>
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<param>
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<key>run_options</key>
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<value>prompt</value>
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</param>
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<param>
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<key>run</key>
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<value>True</value>
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</param>
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||||
<param>
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<key>thread_safe_setters</key>
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||||
<value></value>
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||||
</param>
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||||
<param>
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||||
<key>title</key>
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||||
<value></value>
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||||
</param>
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||||
</block>
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||||
<block>
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||||
<key>variable_slider</key>
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||||
<param>
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||||
<key>comment</key>
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||||
<value></value>
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||||
</param>
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||||
<param>
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||||
<key>converver</key>
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<value>float_converter</value>
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||||
</param>
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<param>
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<key>value</key>
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||||
<value>1</value>
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||||
</param>
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||||
<param>
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||||
<key>_enabled</key>
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||||
<value>True</value>
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||||
</param>
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||||
<param>
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||||
<key>_coordinate</key>
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||||
<value>(120, 147)</value>
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||||
</param>
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||||
<param>
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<key>_rotation</key>
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<value>0</value>
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||||
</param>
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||||
<param>
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||||
<key>grid_pos</key>
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<value></value>
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</param>
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<param>
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<key>id</key>
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<value>amplitude</value>
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</param>
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<param>
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<key>label</key>
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<value></value>
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</param>
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<param>
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<key>max</key>
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<value>2</value>
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</param>
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<param>
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<key>min</key>
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<value>0</value>
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||||
</param>
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||||
<param>
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||||
<key>notebook</key>
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||||
<value></value>
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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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||||
</param>
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||||
<param>
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||||
<key>style</key>
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||||
<value>wx.SL_HORIZONTAL</value>
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||||
</param>
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||||
</block>
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||||
<block>
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||||
<key>variable_slider</key>
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||||
<param>
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||||
<key>comment</key>
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||||
<value></value>
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||||
</param>
|
||||
<param>
|
||||
<key>converver</key>
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||||
<value>float_converter</value>
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||||
</param>
|
||||
<param>
|
||||
<key>value</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_enabled</key>
|
||||
<value>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
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||||
<value>(8, 147)</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_rotation</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>grid_pos</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>id</key>
|
||||
<value>frequency</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>label</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>max</key>
|
||||
<value>samp_rate/2</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>min</key>
|
||||
<value>-samp_rate/2</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>notebook</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>num_steps</key>
|
||||
<value>100</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>style</key>
|
||||
<value>wx.SL_HORIZONTAL</value>
|
||||
</param>
|
||||
</block>
|
||||
<block>
|
||||
<key>variable</key>
|
||||
<param>
|
||||
<key>comment</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_enabled</key>
|
||||
<value>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(8, 83)</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_rotation</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>id</key>
|
||||
<value>samp_rate</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>value</key>
|
||||
<value>40e3</value>
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||||
</param>
|
||||
</block>
|
||||
<block>
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||||
<key>analog_sig_source_x</key>
|
||||
<param>
|
||||
<key>amp</key>
|
||||
<value>1</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>freq</key>
|
||||
<value>frequency</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(184, 11)</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_rotation</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>id</key>
|
||||
<value>analog_sig_source_x_0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>maxoutbuf</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>minoutbuf</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>offset</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>type</key>
|
||||
<value>complex</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>samp_rate</key>
|
||||
<value>samp_rate</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>waveform</key>
|
||||
<value>analog.GR_COS_WAVE</value>
|
||||
</param>
|
||||
</block>
|
||||
<block>
|
||||
<key>blocks_multiply_const_vxx</key>
|
||||
<param>
|
||||
<key>alias</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>comment</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>const</key>
|
||||
<value>amplitude</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>affinity</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_enabled</key>
|
||||
<value>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(344, 43)</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_rotation</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>id</key>
|
||||
<value>blocks_multiply_const_vxx_0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>type</key>
|
||||
<value>complex</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_throttle</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>(496, 43)</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_rotation</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>id</key>
|
||||
<value>blocks_throttle_0_0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>ignoretag</key>
|
||||
<value>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>maxoutbuf</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>minoutbuf</key>
|
||||
<value>0</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>samples_per_second</key>
|
||||
<value>samp_rate</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>type</key>
|
||||
<value>complex</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>vlen</key>
|
||||
<value>1</value>
|
||||
</param>
|
||||
</block>
|
||||
<block>
|
||||
<key>ha5kfu_execproc_xx</key>
|
||||
<param>
|
||||
<key>alias</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>commandline</key>
|
||||
<value>csdr awgn_cc 10 --snrshow</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>comment</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>affinity</key>
|
||||
<value></value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_enabled</key>
|
||||
<value>1</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(344, 275)</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>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>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>fft_size</key>
|
||||
<value>1024</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>freqvar</key>
|
||||
<value>None</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(616, 203)</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_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_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>True</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>fft_size</key>
|
||||
<value>1024</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>freqvar</key>
|
||||
<value>None</value>
|
||||
</param>
|
||||
<param>
|
||||
<key>_coordinate</key>
|
||||
<value>(856, 75)</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_0_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>
|
||||
<connection>
|
||||
<source_block_id>analog_sig_source_x_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>
|
||||
<source_block_id>blocks_multiply_const_vxx_0</source_block_id>
|
||||
<sink_block_id>blocks_throttle_0_0</sink_block_id>
|
||||
<source_key>0</source_key>
|
||||
<sink_key>0</sink_key>
|
||||
</connection>
|
||||
<connection>
|
||||
<source_block_id>blocks_throttle_0_0</source_block_id>
|
||||
<sink_block_id>ha5kfu_execproc_xx_0_0</sink_block_id>
|
||||
<source_key>0</source_key>
|
||||
<sink_key>0</sink_key>
|
||||
</connection>
|
||||
<connection>
|
||||
<source_block_id>blocks_throttle_0_0</source_block_id>
|
||||
<sink_block_id>wxgui_fftsink2_0_0_0</sink_block_id>
|
||||
<source_key>0</source_key>
|
||||
<sink_key>0</sink_key>
|
||||
</connection>
|
||||
<connection>
|
||||
<source_block_id>ha5kfu_execproc_xx_0_0</source_block_id>
|
||||
<sink_block_id>wxgui_fftsink2_0_0</sink_block_id>
|
||||
<source_key>0</source_key>
|
||||
<sink_key>0</sink_key>
|
||||
</connection>
|
||||
</flow_graph>
|
||||
56
libcsdr.c
56
libcsdr.c
|
|
@ -1306,6 +1306,12 @@ void log_ff(float* input, float* output, int size, float add_db) {
|
|||
for(int i=0;i<size;i++) output[i]=10*output[i]+add_db; //@logpower_cf: pass 3
|
||||
}
|
||||
|
||||
float total_logpower_cf(complexf* input, int input_size)
|
||||
{
|
||||
float acc = 0;
|
||||
for(int i=0;i<input_size;i++) acc+=(iof(input,i)*iof(input,i) + qof(input,i)*qof(input,i));
|
||||
return 10*log10(acc/input_size);
|
||||
}
|
||||
|
||||
/*
|
||||
_____ _ _ _ _ _ _
|
||||
|
|
@ -2249,24 +2255,66 @@ void convert_s24_f(unsigned char* input, float* output, int input_size, int bige
|
|||
}
|
||||
}
|
||||
|
||||
FILE* init_get_awgn_samples_f()
|
||||
FILE* init_get_random_samples_f()
|
||||
{
|
||||
return fopen("/dev/urandom", "r");
|
||||
}
|
||||
|
||||
void get_awgn_samples_f(float* output, int output_size, FILE* status)
|
||||
void get_random_samples_f(float* output, int output_size, FILE* status)
|
||||
{
|
||||
int* pioutput = (int*)output;
|
||||
fread((unsigned char*)output, sizeof(float), output_size, status);
|
||||
for(int i=0;i<output_size;i++)
|
||||
output[i] = ((float)pioutput[i])/INT_MAX;
|
||||
{
|
||||
float tempi = pioutput[i];
|
||||
output[i] = tempi/((float)(INT_MAX)); //*0.82
|
||||
}
|
||||
}
|
||||
|
||||
int deinit_get_agwn_samples_f(FILE* status)
|
||||
void get_random_gaussian_samples_c(complexf* output, int output_size, FILE* status)
|
||||
{
|
||||
int* pioutput = (int*)output;
|
||||
fread((unsigned char*)output, sizeof(complexf), output_size, status);
|
||||
for(int i=0;i<output_size;i++)
|
||||
{
|
||||
float u1 = 0.5+0.49999999*(((float)pioutput[2*i])/(float)INT_MAX);
|
||||
float u2 = 0.5+0.49999999*(((float)pioutput[2*i+1])/(float)INT_MAX);
|
||||
iof(output, i)=sqrt(-2*log(u1))*cos(2*PI*u2);
|
||||
qof(output, i)=sqrt(-2*log(u1))*sin(2*PI*u2);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
void get_awgn_samples_c(complexf* output, int output_size, FILE* status)
|
||||
{
|
||||
int* pioutput = (int*)output;
|
||||
int cnt = 0;
|
||||
for(int i=0;i<output_size;i++)
|
||||
{
|
||||
do
|
||||
{
|
||||
fread(pioutput+2*i, sizeof(complexf), 2, status);
|
||||
iof(output, i)=((float)pioutput[2*i])/((float)INT_MAX);
|
||||
qof(output, i)=((float)pioutput[2*i+1])/((float)INT_MAX);
|
||||
}
|
||||
while(sqrt(iof(output, i)*iof(output, i)+qof(output, i)*qof(output, i))>1);
|
||||
iof(output, i)=(1/0.82)*iof(output, i);
|
||||
qof(output, i)=(1/0.82)*qof(output, i);
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
int deinit_get_random_samples_f(FILE* status)
|
||||
{
|
||||
return fclose(status);
|
||||
}
|
||||
|
||||
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];
|
||||
}
|
||||
|
||||
int trivial_vectorize()
|
||||
{
|
||||
//this function is trivial to vectorize and should pass on both NEON and SSE
|
||||
|
|
|
|||
|
|
@ -363,6 +363,9 @@ void firdes_add_resonator_c(complexf* output, int length, float rate, window_t w
|
|||
int apply_fir_cc(complexf* input, complexf* output, int input_size, complexf* taps, int taps_length);
|
||||
|
||||
|
||||
FILE* init_get_awgn_samples_f();
|
||||
void get_awgn_samples_f(float* output, int output_size, FILE* status);
|
||||
int deinit_get_agwn_samples_f(FILE* status);
|
||||
FILE* init_get_random_samples_f();
|
||||
void get_random_samples_f(float* output, int output_size, FILE* status);
|
||||
void get_random_gaussian_samples_c(complexf* output, int output_size, FILE* status);
|
||||
int deinit_get_random_samples_f(FILE* status);
|
||||
float* add_ff(float* input1, float* input2, float* output, int input_size);
|
||||
float total_logpower_cf(complexf* input, int input_size);
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue