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タイトル: A discrete optimization method for high-order FIR filters with finite wordlength coefficients
著者: Nakayama, Kenji link image
中山, 謙二
発行日: 1987年 8月
雑誌名: IEICE transactions on fundamentals of electronics, communications and computer sciences
ISSN: 0916-8508
巻: E70
号: 8
開始ページ: 735
終了ページ: 743
抄録: This paper proposes a new discrete optimization method which is mainly directed toward saving computing time for high-order FIR filters. A transfer functions first approximated in a cascade form of a low-order function W(z) with pre-rounded coefficients and a high-order function F(z) with infinite precision coefficients. Rounded F(z) coefficients are discretely optimized to minimize the mean square error of the amplitude response. The roundoff error spectrum is shaped to be suppressed by a weighting function W(z). In order to save computing time, the error is equivalently evaluated in a time domain, and the F(z) coefficients are divided into small groups in the discrete optimization procedure. Design examples for 200 tap FIR filters demonstrate practical usefulness.
URI: http://hdl.handle.net/2297/5644
資料種別: Journal Article
権利関係: (社)電子情報通信学会の許諾を得て登録
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/5644



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