Circular Convolution using MATLAB

Code:

x1_n=[0 1 0 1];

x2_n=[1 2 1 2];
N=4;
K=0:3;
X1_K=fft(x1_n,N);
X2_K=fft(x2_n,N);
X3_K=X1_K.*X2_K;

x3_n=ifft(X3_K)

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