mirror of https://github.com/PentHertz/srsLTE.git
15 lines
438 B
Matlab
15 lines
438 B
Matlab
function [w2, m, idx] = find_pss2( x, N_id_2, fft_size)
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c=lte_pss_zc(N_id_2);
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cc=[zeros(fft_size/2-31,1); c; zeros(fft_size/2-31,1)];
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ccd=[0; cc(fft_size/2+1:fft_size); cc(2:fft_size/2)];
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ccf=sqrt(fft_size)*conj(ifft(ccd));
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w2=abs(conv(x,ccf/62)).^2/var(x,1)/sqrt(2);
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plot(w2)
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[m, idx]=max(w2);
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%fprintf('Frame starts at %d, energy=%g, p=%g, p/en=%g dB\n',i, ...
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% en, m, m/en);
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end
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