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Efficient Prefiltering for FIR Digital Filters
Efficient Prefiltering for FIR Digital Filters
Kikuchi, Hisakazu
Abe, Yoshito
Watanabe, Hiromichi
Yanagisawa, Takeshi
copyright©1987 IEICE
This paper presents three types of prefiltering for FIR digital filters to decrease the number of multipliers required. The first type is based on cyclotomic polynomials. It can be applied to any types of band-selective filters. The second is a mirror-image quadratic polynomial to make a passband shaping. Both types of the prefilters are used with the interpolation technique, and this improves each primitive characteristic in terms of the sharp transition. In the prefilter-equalizer design approach, these prefilterings bring about the reduction of the number of multipliers required in hardware implementation. The prefiltering efficiency is demonstrated by a few examples.
The Institute of Electronics, Information and Communication Engineers
1987-10
eng
journal article
http://hdl.handle.net/10191/6488
https://niigata-u.repo.nii.ac.jp/records/1760
http://www.ieice.org/jpn/trans_online/
IEICE Transactions
IEICE Transactions
E70-E
10
918
927
https://niigata-u.repo.nii.ac.jp/record/1760/files/e70-e_10_918.pdf
application/pdf
768.3 kB
2019-07-29