mirror of https://github.com/PentHertz/srsLTE.git
27 lines
652 B
Matlab
27 lines
652 B
Matlab
clear;
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sym_len=128;
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hflen = (sym_len/128)*1920*5;
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samp_rate = (sym_len/128)*1920000;
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N_id_2=1;
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input=read_complex('../../build/lte_signal.dat', hflen*200);
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cp0_len=160*sym_len/2048;
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cp1_len=144*sym_len/2048;
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%t = (0:length(input)-1).'/samp_rate;
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%input = input .* exp(-1i*2*pi*2000.0*t);
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subframes=reshape(input,hflen,[]);
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[n m]=size(subframes);
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cfdl=struct('NDLRB',6,'CyclicPrefix','Normal','DuplexMode','FDD');
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cfo=zeros(m,2);
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for i=1:m
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[toffset, cfo(i,2)] = find_pss(subframes(:,i),N_id_2);
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cfo(i,1) = lteFrequencyOffset(cfdl,subframes(:,i),toffset)/15000;
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end
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plot(cfo*15000)
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legend('Matlab','PSS-based')
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disp(mean(cfo)*15)
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