Cascade implementation of a new IIR adaptive digital filter with global convergence and improved convergence rates

B. E. Usevitch, William Kenneth Jenkins

    Research output: Contribution to journalConference article

    3 Scopus citations


    Recently a new type of adaptive IIR filtering algorithm called the prefiltering (PF) algorithm was presented. A new form of PF algorithm is presented here in which the adaptive filter is implemented as a cascade of second-order sections. The advantage of this form is that the low coefficient sensitivity of the cascade structure allows the step size to be significantly increased without causing instability of the adaptive process. The larger step size results in greatly improved convergence rates for the PF algorithm when it is applied to higher order systems.

    Original languageEnglish (US)
    Pages (from-to)2140-2143
    Number of pages4
    JournalProceedings - IEEE International Symposium on Circuits and Systems
    StatePublished - Dec 1 1989
    EventIEEE International Symposium on Circuits and Systems 1989, the 22nd ISCAS. Part 1 - Portland, OR, USA
    Duration: May 8 1989May 11 1989


    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering

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