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| Presentation | 2011-05-13 10:30 A Study on High Accuracy DOA Estimation Using Wide-band Signals Kyouhei Maeda, Toshihiko Nishimura, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.)  AP2011-17 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently, according to rapid spreading of cellular phones and wireless LAN equipment, importance of a precise direction of arrival (DOA) estimation technology becomes larger in order to investigate propagation environments or determine terminal's position. Generally, an array antenna with an estimation is used for the DOA estimation algorithm. In a case where the element position of array antenna is fixed, the higher frequency signal is used, the higher resolution DOA estimation is. However, calculation load increases because we must treat MUSIC spectra which have a narrow angle step and grating lobes occur by using high frequency signals for a fixed element interval. The authers have proposed the precise DOA estimation method using wide-band signals. In the beginning, coarse DOA is estimated at the lowest frequency band that grating lobes do not appear. Next, precise DOA estimation is done at higher frequency band in a narrower angle range in order to prevent grating lobes and calculation load. In this paper, we propose a method that can prevent grating lobes much effectively by changing adaptively the band in higher frequencies. We evaluated the performance of the technique using computer simulations. From the computer simulations, we show the highly accuracy of the proposed method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | DOA estimation / wide-band signal / MUSIC / grating lobe / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 29, AP2011-17, pp. 65-70, May 2011. | |
| Paper # | AP2011-17 | |
| Date of Issue | 2011-05-05 (AP) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2011-17 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2011-05-12 - 2011-05-13 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2011-05-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on High Accuracy DOA Estimation Using Wide-band Signals |
| Sub Title (in English) | |
| Keyword(1) | DOA estimation |
| Keyword(2) | wide-band signal |
| Keyword(3) | MUSIC |
| Keyword(4) | grating lobe |
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| 1st Author's Name | Kyouhei Maeda |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Toshihiko Nishimura |
| 2nd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 3rd Author's Name | Yasutaka Ogawa |
| 3rd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 4th Author's Name | Takeo Ohgane |
| 4th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2011-05-13 10:30:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2011-17 |
| Volume (vol) | vol.111 |
| Number (no) | no.29 |
| Page | pp.65-70 |
| #Pages | 6 |
| Date of Issue | 2011-05-05 (AP) |
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