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12 lines
357 B
Matlab
12 lines
357 B
Matlab
function cfo = cfo_estimate_cp(input, Nsyms, sym_len, cp0_len, cp_len)
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r=zeros(Nsyms, 1);
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r(1)=sum(input(1:cp0_len).*conj(input(1+sym_len:cp0_len+sym_len)));
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s=cp0_len+sym_len+1;
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e=cp0_len+sym_len+cp_len;
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for i=2:Nsyms
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r(i)=sum(input(s:e).*conj(input(s+sym_len:e+sym_len)));
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s=s+sym_len+cp_len;
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e=e+sym_len+cp_len;
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end
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cfo=-angle(mean(r))/2/pi; |