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Accurate Source-Number Estimation Using Denoising Preprocessing and Singular Value Decomposition

Shohei HAMADA, Koichi ICHIGE, Katsuhisa KASHIWAGI, Nobuya ARAKAWA, Ryo SAITO

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Summary :

This paper proposes two accurate source-number estimation methods for array antennas and multi-input multi-output radar. Direction of arrival (DOA) estimation is important in high-speed wireless communication and radar imaging. Most representative DOA estimation methods require the source-number information in advance and often fail to estimate DOAs in severe environments such as those having low signal-to-noise ratio or large transmission-power difference. Received signals are often bandlimited or narrowband signals, so the proposed methods first involves denoising preprocessing by removing undesired components then comparing the original and denoised signal information. The performances of the proposed methods were evaluated through computer simulations.

Publication
IEICE TRANSACTIONS on Communications Vol.E105-B No.6 pp.766-774
Publication Date
2022/06/01
Publicized
2021/12/03
Online ISSN
1745-1345
DOI
10.1587/transcom.2021ISP0003
Type of Manuscript
Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2020)
Category
DOA Estimation

Authors

Shohei HAMADA
  Yokohama National University
Koichi ICHIGE
  Yokohama National University
Katsuhisa KASHIWAGI
  Murata Manufacturing Co., Ltd.
Nobuya ARAKAWA
  Murata Manufacturing Co., Ltd.
Ryo SAITO
  Murata Manufacturing Co., Ltd.

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