65 lines
1.6 KiB
Matlab
Executable file
65 lines
1.6 KiB
Matlab
Executable file
#!/usr/bin/octave
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%{
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function [output]=fgc(path, type)
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if(type(1)=='f')
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elseif(type(1)=='c')
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end
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end
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%}
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function output=shrunf(cmd)
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SIGTERM=15;
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output=[];
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[pin, pout, pid]=popen2('bash',{'-c', cmd});
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%fclose(pin);
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sleep(0.1)
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do
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current_output=fread(pout, Inf, 'float32');
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output=[output; current_output];
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until(feof(pout))
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waitpid(pid);
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%kill(pid, SIGTERM);
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fclose(pin);
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fclose(pout);
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end
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function error_value=run_tr(skip, which_ted)
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out_vect=shrunf(sprintf('dd bs=8 skip=%d if=bpsk31_baseband_sample_complex_8000_sps_010101.raw | csdr timing_recovery_cc %s 256 --add_q --output_error', skip, which_ted));
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error_value=out_vect(2);
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end
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function error_values=mkscurve(which_ted, skips)
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error_values=[]
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for skip=skips
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error_values=[error_values run_tr(skip, which_ted)];
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end
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end
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function fmtplot(h)
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FN = findall(h,'-property','FontName');
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set(FN,'FontName','/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerifCondensed.ttf');
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set(FN,'FontName','times');
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FS = findall(h,'-property','FontSize');
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set(FS,'FontSize',18);
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xlabel('Phase offset in number of samples');
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ylabel('Error value (TED output)');
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end
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skips_gardner=0:256
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error_values_gardner=mkscurve('GARDNER',skips_gardner);
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skips_earlylate=0:256
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error_values_earlylate=mkscurve('EARLYLATE',skips_earlylate);
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%graphics_toolkit("gnuplot")
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h=figure(1);
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plot(skips_gardner, error_values_gardner, 'linewidth', 2);
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title('S-curve for Gardner TED');
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fmtplot(h)
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pause
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plot(skips_earlylate, error_values_earlylate, 'linewidth', 2);
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title('S-curve for early-late TED');
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fmtplot(h)
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pause
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