20 lines
433 B
Matlab
20 lines
433 B
Matlab
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function [out_signal,cor_abs,bo,index_s] = rx_package_search(signal,local_sync,len_frame)
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signali=(real(signal)>0)*2-1;
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signalq=(imag(signal)>0)*2-1;
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signalo=signali+1i*signalq;
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L=length(signal);
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N=length(local_sync);
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for i=N:L
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cor_abs(i)=abs(signalo(i-N+1:i)*local_sync');
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end
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[~,bo]=max(cor_abs(1:length(cor_abs)/2));
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index_s=bo-N+1;
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index_e=index_s+len_frame-1;
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out_signal=signal(index_s:index_e);
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end
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