| Presentation | 1998/12/11 A Generalized Subspace Method for Blind Identification of FIR Systems with Correlated Input Signals Takeshi SHINOMIYA, Isao YAMADA, Kohichi SAKANIWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, the problem of 'blind identification of FIR systems (or channels)' attracts considerable attentions from both signal processing and communications communities. This is mainly because an over-sampling thchnique made it possible to identify a constant multiple of the exact FIR system from the observable second order statistics of the received signals without being affected by additive noise. However there has not been reported an identification scheme to follow the practical situations where an unknown signal with a correlated auto-covariance matrix R_2 is fed to the FIR system to be identified. In this paper, by extending the notion of so called subspace mothod to find the estimate in a signal subspace robust to noisy situation, we propose Generalized subspace method available to identify the FIR system under general situations. It is shown that the proposed scheme can estimate a constant multiple of the exact FIR system without using any additional prior information on the system even if an unknown signal with correlated nonsingular R_2 is fed to the system. Moreover, if R_2 becomes singular, the proposed Generalized subspace method obtain an optimal estimate nearest from the reduced signal subspace. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Blind channel identification problem / Subspace methods / Hybrid Steepest Descent Methods |
| Paper # | DSP98-137 |
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| Conference Information | |
| Committee | DSP |
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| Conference Date | 1998/12/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Digital Signal Processing (DSP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Generalized Subspace Method for Blind Identification of FIR Systems with Correlated Input Signals |
| Sub Title (in English) | |
| Keyword(1) | Blind channel identification problem |
| Keyword(2) | Subspace methods |
| Keyword(3) | Hybrid Steepest Descent Methods |
| 1st Author's Name | Takeshi SHINOMIYA |
| 1st Author's Affiliation | Dept. of Electrical and Electronic Eng., Tokyo Institute of Technology() |
| 2nd Author's Name | Isao YAMADA |
| 2nd Author's Affiliation | Dept. of Electrical and Electronic Eng., Tokyo Institute of Technology |
| 3rd Author's Name | Kohichi SAKANIWA |
| 3rd Author's Affiliation | Dept. of Electrical and Electronic Eng., Tokyo Institute of Technology |
| Date | 1998/12/11 |
| Paper # | DSP98-137 |
| Volume (vol) | vol.98 |
| Number (no) | 451 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |