| Presentation | 2022-08-26 Instantaneous linear dimensionality reduction for array signal processing Natsuki Ueno, Nobutaka Ono, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Linear dimensionality reduction of time-series signals observed by a sensor array is often useful in balancing the accuracy and computational speed of post-stage processing, especially in real-time systems with limited computational resources. However, for multichannel time-series signals having frequency-dependent interchannel correlations, the frequency-wise application of the linear dimensionality reduction method requires a large number of digital filters with large filter lengths in the time-domain processing, which is unpreferable in the viewpoint of computational cost. We propose a frequency-independent, i.e., instantaneous, linear dimensionality reduction method that achieves low computational cost and high restoration accuracy. Numerical experiments were also conducted to compare the proposed method with other instantaneous linear dimensionality reduction methods, i.e., the principal component analysis and element selection method, and their results demonstrated the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | dimensionality reduction / multichannel time-series signal / array signal processing / block coordinate descent |
| Paper # | SIP2022-65 |
| Date of Issue | 2022-08-18 (SIP) |
| Conference Information | |
| Committee | SIP |
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| Conference Date | 2022/8/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nobumoto Ohama Memorial Hall (Ishigaki Island) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal processing, etc. |
| Chair | Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) |
| Vice Chair | Koichi Ichige(Yokohama National Univ.) / Takayuki Nakachi(Ryukyu Univ.) |
| Secretary | Koichi Ichige(Tokyo Univ. Agri.&Tech.) / Takayuki Nakachi(Kogakuin Univ.) |
| Assistant | Taichi Yoshida(UEC) / Shoko Imaizumi(Chiba Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Signal Processing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Instantaneous linear dimensionality reduction for array signal processing |
| Sub Title (in English) | |
| Keyword(1) | dimensionality reduction |
| Keyword(2) | multichannel time-series signal |
| Keyword(3) | array signal processing |
| Keyword(4) | block coordinate descent |
| 1st Author's Name | Natsuki Ueno |
| 1st Author's Affiliation | Tokyo Metropolitan University(TMU) |
| 2nd Author's Name | Nobutaka Ono |
| 2nd Author's Affiliation | Tokyo Metropolitan University(TMU) |
| Date | 2022-08-26 |
| Paper # | SIP2022-65 |
| Volume (vol) | vol.122 |
| Number (no) | SIP-165 |
| Page | pp.pp.81-85(SIP), |
| #Pages | 5 |
| Date of Issue | 2022-08-18 (SIP) |