Implementation of programmable multiplierless FIR filters with powers-of-two coefficients

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An observation which is useful for hardware implementation of programmable FIR with powers-of-two coefficients (2PFIR filters) is made. Specifically, it is shown that the exponents of filter coefficients representable by the canonical signed digit (CSD) code with M ternary digits can be chosen from some subsets of {0, 1,..., M-1}. This observation naturally leads to 2PFIR filters with shorter shifters whose length is strictly less than M and, as a consequence, leads to an efficient hardware structure for programmable 2PFIR filtering. In addition, we present some experimental results indicating that the shifters of 2PFIR filters can be shortened further in some cases.
Publisher
Institute of Electrical and Electronics Engineers
Issue Date
1995-08
Language
English
Article Type
Note
Keywords

DESIGN

Citation

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL , v.42, no.8, pp.553 - 556

ISSN
1057-7130
URI
http://hdl.handle.net/10203/11673
Appears in Collection
EE-Journal Papers(저널논문)
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