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ofdm cyclic extension

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shahidmalik

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role of cyclic extension

i have given a sequence of length N and guard interval of 4 how will i make use of cyclic extension.
thanx in advance
 

maomun

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cyclic extension in ofdm

Ex. 1.assume your data sequence = s(1:N)
2.Number of guard interval , Ng = 4 of all data length
3. Nt = N+Ng (total length)

simple code for add guard interval by matlab
%new sequence

st(1:Nt) = [s(N-Ng+1:N) s(1:N)] ;

%and then simple code for remove guard interval
1. assume Recieve signal = rt(1:Nt)

r(1:N) = rt(Ng+1:Nt);
 

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