I have a discrete signal as follows: \Big[x(1) \,\,\, x(2)
\,\,\, \dots \,\,\, x(M+K) \Big] and I want to do some operation
(esp. a well known matrix e.g Vandermonde) to create this
matrix:   Generating the above matrix can not be done using a
simple matrix multiplication, (is it?). However, is there any
known operation for such arrangement?