Presentation 2021-03-02
[Poster Presentation] Wireless channel characterization with sparse modeling
Naota Takeyama, Jin Mitsugi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In wireless channel characterization using adaptive filters, adaptive algorithms based on Lasso, Group Lasso, and SCAD have been proposed as methods using sparse modeling. However, wireless channel characterization using these adaptive algorithms cannot simultaneously regularize the filter coefficients based on their group sparsity and accurately estimate the filter coefficients. This paper proposes an adaptive filter algorithm based on Group SCAD. This adaptive algorithm improves the conventional method based on Group Lasso by using the regularization term of the non-convex function used in SCAD, which enables highly accurate estimation of filter coefficients based on group sparsity. In this report, the proposal is evaluated in terms of converging speed and the accuracy to reconstruct the filter parameter with numerical simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Adaptive Filter / System Characterization / Sparse Modeling
Paper # SeMI2020-66
Date of Issue 2021-02-22 (SeMI)

Conference Information
Committee SeMI / IPSJ-MBL / IPSJ-UBI
Conference Date 2021/3/1(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Mobile Computing, Ubiquitous Computing, etc.
Chair Susumu Ishihara(Shizuoka Univ.)
Vice Chair Kazuya Monden(Hitachi) / Koji Yamamoto(Kyoto Univ.)
Secretary Kazuya Monden(Kyoto Univ.) / Koji Yamamoto(Cyber Univ.) / (Hitachi) / (Waseda Univ.)
Assistant Yuki Katsumata(NTT DOCOMO) / Yu Nakayama(Tokyo Univ. of Agri. and Tech.) / Akira Uchiyama(Osaka Univ.)

Paper Information
Registration To Technical Committee on Sensor Network and Mobile Intelligence / Special Interest Group on Mobile Computing and Pervasive Systems / Special Interest Group on Ubiquitous Computing System
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Poster Presentation] Wireless channel characterization with sparse modeling
Sub Title (in English)
Keyword(1) Adaptive Filter
Keyword(2) System Characterization
Keyword(3) Sparse Modeling
1st Author's Name Naota Takeyama
1st Author's Affiliation Keio University(Keio Univ.)
2nd Author's Name Jin Mitsugi
2nd Author's Affiliation Keio University(Keio Univ.)
Date 2021-03-02
Paper # SeMI2020-66
Volume (vol) vol.120
Number (no) SeMI-382
Page pp.pp.47-56(SeMI),
#Pages 10
Date of Issue 2021-02-22 (SeMI)