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39 lines
817 B
Matlab
39 lines
817 B
Matlab
function [ fs ] = check_pss( x, N_id_2)
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%CHECK_PSS Summary of this function goes here
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% Detailed explanation goes here
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flen=9600;
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n=length(x);
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nf=floor(n/flen);
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xf=reshape(x(1:nf*flen),flen,[]);
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fs=zeros(nf,1);
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cfo=zeros(nf,1);
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cfo2=zeros(nf,1);
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m_p=zeros(nf,1);
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for i=1:nf-1
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[fs(i) cfo(i) m_p(i)]=find_pss(xf(:,i),N_id_2,false);
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if (fs(i)<0)
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j=0;
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end
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% cfo2(i) = cfo_estimate_cp(xf(fs(i)+960:fs(i)+2*960,i),7,128,10,9);
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end
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sfo=sfo_estimate(fs, 5/1000);
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subplot(1,3,1)
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plot(1:nf,fs)
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legend('PSS-based');
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subplot(1,3,2)
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plot(1:nf, cfo, 1:nf, cfo2)
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legend('PSS-based','CP-based');
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if (nf > 0)
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axis([0 nf -0.5 0.5])
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end
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subplot(1,3,3)
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plot(m_p)
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fprintf('pss_mean=%g, pss_var=%g, cp_mean=%g, cp_var=%g m_p=%g sfo=%g Hz\n',mean(cfo),var(cfo), mean(cfo2), var(cfo2), mean(m_p), sfo)
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end
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