Blind identifiability of FIR-MIMO systems with colored input using second order statistics

We show that a finite impulse response and multi-input-multi-output (FIR-MI MO) system with colored input is blindly identifiable up to a permutation a nd scaling using the second order statistics (SOS) of the system's output i f a) the system function is irreducible, and b) the input signals are uncor related from each other and have distinct power spectra, Condition a) is we aker than several conditions reported previously, It suggests a further pot ential of developing more robust blind algorithms.