Convergence analysis of kernel LMS algorithm with pre-tuned dictionary

Jie Chen, Wei Gao, Cedric Richard, Jose-Carlos M. Bermudez
2014 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
The kernel least-mean-square (KLMS) algorithm is an appealing tool for online identification of nonlinear systems due to its simplicity and robustness. In addition to choosing a reproducing kernel and setting filter parameters, designing a KLMS adaptive filter requires to select a so-called dictionary in order to get a finite-order model. This dictionary has a significant impact on performance, and requires careful consideration. Theoretical analysis of KLMS as a function of dictionary setting
more » ... as rarely, if ever, been addressed in the literature. In an analysis previously published by the authors, the dictionary elements were assumed to be governed by the same probability density function of the input data. In this paper, we modify this study by considering the dictionary as part of the filter parameters to be set. This theoretical analysis paves the way for future investigations on KLMS dictionary design.
doi:10.1109/icassp.2014.6855006 dblp:conf/icassp/ChenGRB14 fatcat:2mtw4dcgj5barjt7hg5izfqczi