The invention as defined in claim 33 wherein said generated sequences are of the form Si={f0 s i , f1 s i , . . . fk s i , . . . } and said Latin hypercube sequence is generated by f k s i = ( ??? l = 1 L - 1 ??? ??? a l ??? ??? k p l - 1 ??? + s i ) ??? mod ??? ??? p + Bp , where p, a and si are integers, p is a prime number or a power of a prime number, B is the frequency band, ??? k p l - 1 ???