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Blind identification of MIMO FIR systems for colored inputs by HOS based inverse filter criteria and GCD

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4 Author(s)
Chong-Yung Chi ; Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Ching-Yung Chen ; How-Ping Lee ; Chun-Jen Chen

A novel two-step algorithm is proposed for blind identification (BID) of a discrete-time K-input P-output (P ≥ K and P > 1) finite impulse response system F(z) = (F1(z), ...,FK (z)) driven by K stationary nonGaussian inputs which are spatially independent but temporally colored. With each input modelled as a moving-average process with model Bk(z), Chi et al.'s (2003) BID algorithm using higher-order statistics based inverse filter criteria is utilized to estimate the combined system H(z) = (F1(z)B1(z),...,FK(z)BK(Z)) in the first step. In the second step, Qiu et al.'s (1997) greatest common divisor computation method is employed to obtain Fk(z) and Bk(z) from the estimated H(z). Some simulation results are presented to support the efficacy of the proposed 2-step BID algorithm.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003