| Presentation | 2007-01-19 High Accuracy Delay Time Estimation by Enhanced Frequency Domain MUSIC algorithm Tadashi OSHIMA, Atsushi OKAMURA, Isamu CHIBA, Nobuhiro SUZUKI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Communication technologies using spread spectrum signal are applied to variety systems, such as Wireless LAN, GPS and so on. In these systems, cross correlation processing between received signal and spread code generated in receiver is used in signal acquisition. However, the timing synchronization (propagation delay time) has the error due to multipath wave received close to direct wave less than 1 chip of code. The FFT-MUSIC algorithm achieved high accuracy delay time estimation of desired direct wave even if multipath wave is received close to direct wave. However in low SNR environment the estimation error become large due to division of received signal frequency spectrum by spread code frequency spectrum. Thus in this paper, to purpose of high accuracy delay time estimation in low SNR environment, we propose a method that the Super resolution algorithm applies to frequency spectrum which is divided received signal spectrum by smoothed spread code spectrum. Effectiveness of the proposed method using the MUSIC algorithm was verified by numerical examples. As the result in SNR=-10dB, the proposed method decreased the estimation error to less than one-seventieth of conventional method's one. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MUSIC / super resolution / multipath / GPS / spread spectrum |
| Paper # | SANE2006-130 |
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| Conference Information | |
| Committee | SANE |
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| Conference Date | 2007/1/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Space, Aeronautical and Navigational Electronics (SANE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Accuracy Delay Time Estimation by Enhanced Frequency Domain MUSIC algorithm |
| Sub Title (in English) | |
| Keyword(1) | MUSIC |
| Keyword(2) | super resolution |
| Keyword(3) | multipath |
| Keyword(4) | GPS |
| Keyword(5) | spread spectrum |
| 1st Author's Name | Tadashi OSHIMA |
| 1st Author's Affiliation | Mitsubishi Electric Corporation, Information & Technology Development Laboratory() |
| 2nd Author's Name | Atsushi OKAMURA |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation, Information & Technology Development Laboratory |
| 3rd Author's Name | Isamu CHIBA |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation, Information & Technology Development Laboratory |
| 4th Author's Name | Nobuhiro SUZUKI |
| 4th Author's Affiliation | Mitsubishi Electric Corporation, Information & Technology Development Laboratory |
| Date | 2007-01-19 |
| Paper # | SANE2006-130 |
| Volume (vol) | vol.106 |
| Number (no) | 471 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |