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Gradient-based adaptive algorithm for minimum phase-all pass decomposition of an FIR system

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2 Author(s)
M. Flanagan ; Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland ; A. D. Fagan

An adaptive filtering algorithm which performs minimum phase-all pass (MP-AP) decomposition of an FIR system is proposed. The minimum phase component of the system is modeled as a lattice filter cascaded with a gain stage. Simulation results on randomly generated FIR systems demonstrate convergence of the algorithm to the correct MP-AP decomposition in 92.6% of cases. The algorithm has the additional advantage that it is capable of detecting misconvergence during or after adaptation. These properties combined make the algorithm a strong candidate for use with compound precoding, a pre-equalization method for high-speed modems.

Published in:

Proceedings of the 2005 European Conference on Circuit Theory and Design, 2005.  (Volume:1 )

Date of Conference:

28 Aug.-2 Sept. 2005