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- reduced lower spur boundary

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git-svn-id: http://moon:8086/svn/vhdl/trunk@136 cc03376c-175c-47c8-b038-4cd826a8556b
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jens
2008-12-21 16:15:31 +00:00
parent a2e01a7966
commit bb5f153651
1 changed files with 4 additions and 4 deletions
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lib/radio/nco/sim/tb_nco_results.m
+4 -4
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@@ -26,22 +26,22 @@ max_ditherd_spur_value = 20*log10(v);
close all;
subplot(2,1,1)
plot(fa/N_fft*(0:N_fft2),20*log10(1E-6+fft_y2(1:N_fft2+1)), '-', fa/N_fft*(0:N_fft2), max_spur_value*ones(1,N_fft2+1), 'r-', [max_spur_freq], [max_spur_value], 'ro'); grid;
plot(fa/N_fft*(0:N_fft2),20*log10(fft_y2(1:N_fft2+1)), '-', fa/N_fft*(0:N_fft2), max_spur_value*ones(1,N_fft2+1), 'r-', [max_spur_freq], [max_spur_value], 'ro'); grid;
spur_legend = sprintf('Max. spur %.1fdB at %.1fMHz', max_spur_value, max_spur_freq);
legend('With dithering', spur_legend);
legend('No dithering', spur_legend);
title('Table');
ylabel('dB');
xlabel('f/MHz');
axis([0 fa/2 -120 0]);
axis([0 fa/2 -140 0]);
subplot(2,1,2)
plot(fa/N_fft*(0:N_fft2),20*log10(1E-6+fft_y3(1:N_fft2+1)), '-', fa/N_fft*(0:N_fft2), max_ditherd_spur_value*ones(1,N_fft2+1), 'r-', [max_ditherd_spur_freq], [max_ditherd_spur_value], 'ro'); grid;
plot(fa/N_fft*(0:N_fft2),20*log10(fft_y3(1:N_fft2+1)), '-', fa/N_fft*(0:N_fft2), max_ditherd_spur_value*ones(1,N_fft2+1), 'r-', [max_ditherd_spur_freq], [max_ditherd_spur_value], 'ro'); grid;
spur_legend = sprintf('Max. spur %.1fdB at %.1fMHz', max_ditherd_spur_value, max_ditherd_spur_freq);
legend('With dithering', spur_legend);
title('Table');
ylabel('dB');
xlabel('f/MHz');
axis([0 fa/2 -120 0]);
axis([0 fa/2 -140 0]);
figure;
hist(LFSR, nbins)