PCONV Periodic convolution
Usage: h=pconv(f,g)
h=pconv(f,g,ftype);
PCONV(f,g) computes the periodic convolution of f and g. The convolution
is given by
L-1
h(l+1) = sum f(k+1) * g(l-k+1)
k=0
PCONV(f,g,'r') computes the convolution where g is reversed
(involuted) given by
L-1
h(l+1) = sum f(k+1) * conj(g(k-l+1))
k=0
This type of convolution is also known as cross-correlation.
PCONV(f,g,'rr') computes the alternative where both f and g are
reversed given by
L-1
h(l+1) = sum conj(f(-k+1)) * conj(g(k-l+1))
k=0
In the above formulas, l-k, k-l and -k are computed modulo L.
The input arrays f and g can be 1D vectors or one of them can be
a multidimensional array. In either case, the convolution is performed
along columns with row vectors transformed to columns.
Url: http://ltfat.github.io/doc/fourier/pconv.html
See also: dft, involute.
Package: ltfat