Patent ID: 8594221

Claim:
A model-based channel estimator for correlated fading channels adapted to a multiple-input multiple-output (MIMO) system having a transmit antenna array and a receive antenna array, said channel estimator comprising: an estimator of channel parameters that estimates a coefficient vector of a channel matrix for a given angle of departure (AoD) according to a plurality of received signals, a plurality of transmit pilots, a plurality of known model orders for a derived channel model, and a plurality of predetermined bases for exploiting time channel correlation, frequency channel correlation, spatial channel correlation among said transmit antenna array, and spatial channel correlation among said receive antenna array, then estimates a mean AoD based on the estimated channel matrix, wherein, said estimator of channel parameters estimates iteratively said coefficient vector and said mean AoD until a stop criterion is met; and an estimate reconstruction unit that reconstructs a channel estimate, by using said plurality of predetermined bases, said coefficient vector, and the mean AoD.