1. Subband Adaptive Algorithm for Convex Combination of LMS based Transversal Filters
- Author
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Hyeon-Deok Bae, Sang-Wook Sohn, Hun Choi, and Kyeong-Pyo Lee
- Subjects
Adaptive filter ,Transient state ,Adaptive algorithm ,Rate of convergence ,Control theory ,Convex optimization ,Proper convex function ,Convex combination ,Electrical and Electronic Engineering ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Filter bank ,Algorithm ,Mathematics - Abstract
Convex combination of two adaptive filters is an efficient method to improve adaptive filter performances. In this paper, a subband convex combination method of two adaptive filters for fast convergence rate in the transient state and low steady state error is presented. The cost function of mixing parameter for a subband convex combination is defined, and from this, the coefficient update equation is derived. Steady state analysis is used to prove the stability of the subband convex combination. Some simulation examples in system identification scenario show the validity of the subband convex combination schemes.
- Published
- 2013
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