Title:
適応ディジタルフィルタ、信号処理方法、FM受信機およびプログラム
Document Type and Number:
Japanese Patent JP5029357
Kind Code:
B2
Abstract:
An adaptive digital filter is provided with a filter unit for generating and supplying an output signal by means of a convolution operation of an input signal and a filter coefficient, or a filter unit for taking as input signal a complex signal in which one of two signals that are generated from one real signal and that have phases that differ by 90° is a real part and the other signal is an imaginary part for generating and supplying an output signal that is a complex signal by means of a convolution operation of the input signal and a filter coefficient that is the real signal; and the update amount of the filter coefficient is controlled based on the estimated value of the amplitude of at least one of the input signal and output signal of the adaptive digital filter.
Inventors:
Hoshuyama Osamu
Application Number:
JP2007525991A
Publication Date:
September 19, 2012
Filing Date:
July 14, 2006
Export Citation:
Assignee:
NEC
International Classes:
H03H21/00; H03H17/02; H04B1/10; H04B3/06; H04B7/005
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Ishibashi Masayuki
Masaaki Ogata