an embodiment communication system and method for using multiple - input multiple - output use . kronecker model to determine a symbol coding formulation that achieves ergodic capacity for high signal - to - noise ratios . the lower bound on this capacity is achieved by input signals in the form of the product of an isotropically distributed random grassmannian component and a deterministic component comprising the eigenvectors and the inverse of the eigenvalues of the transmitter covariance matrix .