Obviously, by choosing a small sampling density such that F covers the compact support g of the original signal , the number of samples ( h) , h E-1, for reconstruction is high, and vice versa. In practice,we are therefore required to find a compromise between sampling density and total number of samples. This can be achieved by a choice of A such that FA covers tightly.For g = H and the lattice A generated by the vectors g1,..., we have in explicitly written form