What is Cconv command in Matlab?
c = cconv( a , b , n ) circularly convolves vectors a and b . n is the length of the resulting vector. You can also use cconv to compute the circular cross-correlation of two sequences.
How the circular convolution is obtained?
Take two concentric circles. Plot N samples of x1(n) on the circumference of the outer circle maintainingequaldistancesuccessivepoints in anti-clockwise direction. Multiply corresponding samples on the two circles and add them to get output.