Abstract: Based on the subspace method, this paper presents a new technique for the blind equalization of multiple-input multiple-output linear systems whose channel impulse has finite support of the same length. By utilizing the theory about the rational subspaces and the minimal polynomial basis and then estimating the instantaneous correlation matrix, this technique can identify the channel coefficients and accomplish the blind equalization. Computer simulations can prove its effectiveness.

Key words: blind identification, blind equalization, subspace method, rational subspace, minimal polynomial basis