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From: mathu_09 on 15 Dec 2009 07:35
Hi
I have a query with the Zadoff_chu sequence
I have the following matlab code
I generated the zad_off chu sequence
then made a circular shift with factor of 6.
tried to correlate the shifted version with the original
as expected the peak has shifted but iam unable to get
the location of the peak mathematically
and what i dont understand is why is the peak shifting
based on the factor U which is the logical root sequence number
matlab reference,It will be helpful if somebody helps me in this
regard


U = 140;
for n= 0:838

conv_result(n+1) = exp((-j*pi*U*n*(n+1)/839));
shift_result(n+1)= conv_result(n+1)*exp((j*2*pi*6*n)/839);
end

[corr lag] = xcorr(shift_result,conv_result);
plot(lag,abs(corr));


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