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| Presentation | 2012-01-26 15:15 Pre-FFT Wideband Adaptive Antenna Array for Asynchronous Interference Suppression in OFDM Systems Shinji Takenaka, Kazunori Hayashi, Megumi Kaneko, Hideaki Sakai (Kyoto Univ.), Riichi Kudo, Tomoki Murakami (NTT)  SIP2011-90 RCS2011-279 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes a co-channel interference suppression scheme for OFDM (Orthogonal Frequency Division Multiplexing) systems using pre-FFT (Fast Fourier Transform) type adaptive antenna array at the receiver,where the FFT timing of desired and interfering OFDM symbols are not synchronized (i.e., asynchronous co-channel interference). The proposed method controls the weights of the antenna array so as to minimize the noise power at the output of the frequency domain equalizer assuming zero forcing criterion under the constraint that the power of the asynchronous co-channel interference at the array output is zero. Moreover, we employ a wideband adaptive antenna array, which has a tapped delay line at each element, to cope with multiple co-channel interference signals without increasing the number of antenna elements. We evaluate the BER (bit error rate) performance of the proposed scheme and show the effectiveness of the proposed approach. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Adaptive Array / Asynchronous Co-channel Interference / OFDM / pre-FFT Type Array / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 403, SIP2011-90, pp. 73-78, Jan. 2012. | |
| Paper # | SIP2011-90 | |
| Date of Issue | 2012-01-19 (SIP, RCS) | |
| 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 | SIP2011-90 RCS2011-279 |
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| Conference Information | |
| Committee | RCS SIP |
| Conference Date | 2012-01-26 - 2012-01-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing for Wireless Systems, etc. |
| Paper Information | |
| Registration To | SIP |
| Conference Code | 2012-01-RCS-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Pre-FFT Wideband Adaptive Antenna Array for Asynchronous Interference Suppression in OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | Adaptive Array |
| Keyword(2) | Asynchronous Co-channel Interference |
| Keyword(3) | OFDM |
| Keyword(4) | pre-FFT Type Array |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shinji Takenaka |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Kazunori Hayashi |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Megumi Kaneko |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 4th Author's Name | Hideaki Sakai |
| 4th Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 5th Author's Name | Riichi Kudo |
| 5th Author's Affiliation | NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT) |
| 6th Author's Name | Tomoki Murakami |
| 6th Author's Affiliation | NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT) |
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| Speaker | Author-1 |
| Date Time | 2012-01-26 15:15:00 |
| Presentation Time | 25 minutes |
| Registration for | SIP |
| Paper # | SIP2011-90, RCS2011-279 |
| Volume (vol) | vol.111 |
| Number (no) | no.403(SIP), no.404(RCS) |
| Page | pp.73-78 |
| #Pages | 6 |
| Date of Issue | 2012-01-19 (SIP, RCS) |
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