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http://dx.doi.org/10.7471/ikeee.2017.21.3.202

The subband adaptive filter with variable length adaptive filter  

Yang, Yoon-Gi (Dept. of Information and Telecommunication Eng. The University of Suwon)
Publication Information
Journal of IKEEE / v.21, no.3, 2017 , pp. 202-210 More about this Journal
Abstract
Recently, some variable length adaptive filters which employ variable lengths taps for the input signal statistics are proposed [1-5]. In this paper, a new subband adaptive filter with variable filter tap length is proposed. The proposed subband variable length adaptive filters can optimize filter length for each subband which can result less computational complexities with respect to the conventional full band adaptive filters. When the signal in the full band has narrow spectrum, the conventional full band adaptive requires very long filter taps, whereas the proposed subband variable filter requires less taps with the spectrum split in subband. The computer simulation results reveals that in many case, in system identification with narrow band system estimation, the proposed adaptive filter has less computational complexities with faster convergence.
Keywords
digital signal processing; adaptive filter; subband; complexity; system response;
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