标题：An order estimator for magnitude constrained FIR Nyquist filters
作者机构：[Lai, Xiaoping ] Institute of Information and Control, Hangzhou Dianzi University, Hangzhou, 310018, China;[Lai, Xiaoping ] School of Information Engi 更多
会议名称：2008 International Conference on Communications, Circuits and Systems, ICCCAS 2008
会议日期：May 25, 2008 - May 27, 2008
来源：2008 International Conference on Communications, Circuits and Systems Proceedings, ICCCAS 2008
摘要：Order estimation is an often task of filter design. For a general-purpose finite impulse response (FIR) filter, the formulas relating the filter order, the magnitude error bounds and the transition widths are well known. These formulas, however, are not appropriate for Nyquist FIR filters. This paper presents a formula that estimates the minimum order of a Nyquist filter with prescribed magnitude error bounds. Simulation examples and comparisons with existing methods demonstrate that the presented formula has very high accuracy. ©2008 IEEE.