Title:
適応フィルタ
Document Type and Number:
Japanese Patent JP4398146
Kind Code:
B2
Abstract:
An adaptive filter is implemented by a computer ( 10 ) processing an input signal using a recursive least squares lattice (RLSL) algorithm ( 12 ) to obtain forward and backward least squares prediction residuals. A prediction residual is the difference between a data element in a sequence of elements and a prediction of that element from other sequence elements. Forward and backward residuals are converted at ( 14 ) to interpolation residuals which are unnormalized Kalman gain vector coefficients. Interpolation residuals are normalized to produce the Kalman gain vector at ( 16 ). The Kalman gain vector is combined at ( 18 ) with input and reference signals x(t) and y(t), which provides updates for the filter coefficients or weights to reflect these signals as required to provide adaptive filtering.
Inventors:
Ian David, Skitsdmore
Proudler, Ian Keith
Proudler, Ian Keith
Application Number:
JP2002541791A
Publication Date:
January 13, 2010
Filing Date:
October 25, 2001
Export Citation:
Assignee:
Kinetic Limited
International Classes:
H03H21/00; G01S3/805; G01S7/02; G01S7/523
Domestic Patent References:
| JP11175510A |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Akio Ichiiri
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura
Akio Ichiiri
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura