21 lines
427 B
Matlab
21 lines
427 B
Matlab
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function [deltaf,out_signal] = rx_freq_sync(sync_samples,Num,samples_package)
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Tchip=1/10000000;
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len=length(samples_package);
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N=length(sync_samples)/Num;
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L0=length(sync_samples);
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zr=sync_samples.^2;
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for m=1:N
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r0(m)=mean(zr(1+m:L0).*conj(zr(1:L0-m)));
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end
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deltaf=angle(sum(r0))/(pi*(N+1)*Tchip)/2;
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freq_offset=deltaf;
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out_signal=samples_package(1:end).*exp(-1i*2*pi*freq_offset*(1:len)*Tchip);
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end
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