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IEICE TRANSACTIONS on Fundamentals

A Simple and Explicit Formulation of Non-Unique Wiener Filters for Linear Predictor with Rank-Deficient Autocorrelation Matrix

Shunsuke KOSHITA, Masahide ABE, Masayuki KAWAMATA, Takaaki OHNARI, Tomoyuki KAWASAKI, Shogo MIURA

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Summary :

This letter presents a simple and explicit formulation of non-unique Wiener filters associated with the linear predictor for processing of sinusoids. It was shown in the literature that, if the input signal consists of only sinusoids and does not include a white noise, the input autocorrelation matrix in the Wiener-Hopf equation becomes rank-deficient and thus the Wiener filter is not uniquely determined. In this letter we deal with this rank-deficient problem and present a mathematical description of non-unique Wiener filters in a simple and explicit form. This description is directly obtained from the tap number, the frequency of sinusoid, and the delay parameter. We derive this result by means of the elementary row operations on the augmented matrix given by the Wiener-Hopf equation. We also show that the conventional Wiener filter for noisy input signal is included as a special case of our description.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.8 pp.1614-1617
Publication Date
2016/08/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.1614
Type of Manuscript
LETTER
Category
Digital Signal Processing

Authors

Shunsuke KOSHITA
  Tohoku University
Masahide ABE
  Tohoku University
Masayuki KAWAMATA
  Tohoku University
Takaaki OHNARI
  TOSHIBA Corporation
Tomoyuki KAWASAKI
  TOSHIBA Corporation
Shogo MIURA
  TOSHIBA Corporation

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