| Presentation | 2015-08-17 DOA Estimation for Wideband Signals by Using Weighted Squared-TOPS Hirotaka Hayashi, Tomoaki Ohtsuki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, direction-of-arrival (DOA) estimation for wideband incoming waves has been received attention with the progress of Radio Frequency (RF) systems using wideband signals such as wireless communication and radar, etc. To improve degree-of-freedom (DOF) and accuracy of DOA estimation, many researches on wideband DOA estimation technique have also been proposed over several decades. Conventional wideband DOA estimators are based on the method to decompose the wideband signals into some narrowband signals using filter banks or a discrete Fourier transform. They are categorized incoherent signal subspace method (ISSM) and coherent signal subspace method (CSSM). The performance of DOA estimation using ISSM deteriorates at low signal-to-noise power ratio (SNR) and the CSSM can improve the accuracy of DOA estimation at low SNR, however it requires an initial DOA and the initial value greatly influences the accuracy. In recent year, the new DOA estimation method named Test of Orthogonality of Projected Subspaces (TOPS) has been proposed, which does not require initial value and provide better performance of DOA estimation at low SNR. In this report, we propose a new wideband DOA estimation method based on Squared-TOPS, which is the improvement method of TOPS. We also demonstrate the effectiveness of the proposed method via simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wideband signals / Array / DOA estimation |
| Paper # | RCS2015-134 |
| Date of Issue | 2015-08-10 (RCS) |
| Conference Information | |
| Committee | RCS / SAT |
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| Conference Date | 2015/8/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) / Morio Toyoshima(NICT) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) / Takatoshi Sugiyama(Kogakuin Univ.) / Toshinori Susuki(Tohoku Gakuin Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada(NICT) / Takatoshi Sugiyama(NTT) / Toshinori Susuki |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Satellite Telecommunications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | DOA Estimation for Wideband Signals by Using Weighted Squared-TOPS |
| Sub Title (in English) | |
| Keyword(1) | Wideband signals |
| Keyword(2) | Array |
| Keyword(3) | DOA estimation |
| 1st Author's Name | Hirotaka Hayashi |
| 1st Author's Affiliation | Keio University(Keio Univ.) |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Keio University(Keio Univ.) |
| Date | 2015-08-17 |
| Paper # | RCS2015-134 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-181 |
| Page | pp.pp.13-18(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-08-10 (RCS) |