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| Presentation | 2010-11-12 09:40 A Study on Autonomous PU Detection Scheme by SU with Cyclic Prefix in OFDM-based Cognitive Radio Keisuke Naito, Iwao Sasase (Keio Univ.)  CS2010-47 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | CR(Cognitive Radio) has been attracted attentions to resolve the problem related to lack of frequencies. For the CR, if we detect the unused frequency band which is used by licensed PU(Primary User), SU(Secondary User) starts to use the frequency band. In the conventional scheme, centralized control manages frequency resources to avoid the interference between PU and SU. However, there are problems related to infrastructure construction cost increment caused by miniaturization of cell size and CR has little flexibility when it starts. In this paper, we study autonomous PU detection scheme by SU when PU starts to use the licensed frequency band, which needs neither management of frequency by centralized control, nor side information which is a part of the frequency band. We assume that PU modulation is OFDM(Orthogonal Frequency Division Multiplex). After SU calculates the correlation between CP(Cyclic Prefix) and effective symbol, the one with a high correlation is regarded as a synchronous candidate. Then the pilot subcarriers are extracted from OFDM symbol of synchronous candidate in the frequency domain. To detect PU, IFFT(Inverse Fast Fourier Transform) is applied to the extracted subcarriers which is multiplied known pilot subcarriers. The detection probability is evaluated by the computer simulation, and the effectiveness of the proposed method is shown. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Cognitive Radio / OFDM / PU detection / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 269, CS2010-47, pp. 59-64, Nov. 2010. | |
| Paper # | CS2010-47 | |
| Date of Issue | 2010-11-04 (CS) | |
| 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) | |
| Notes on Review | This article is a technical report without peer review, and its polished version will be published elsewhere. | |
| Download PDF | CS2010-47 |
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| Conference Information | |
| Committee | CS |
| Conference Date | 2010-11-11 - 2010-11-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Wakura Hot Spring |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Broadband access systems, home networks, network services, applications for communications, etc. |
| Paper Information | |
| Registration To | CS |
| Conference Code | 2010-11-CS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Autonomous PU Detection Scheme by SU with Cyclic Prefix in OFDM-based Cognitive Radio |
| Sub Title (in English) | |
| Keyword(1) | Cognitive Radio |
| Keyword(2) | OFDM |
| Keyword(3) | PU detection |
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| 1st Author's Name | Keisuke Naito |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Iwao Sasase |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | Author-1 |
| Date Time | 2010-11-12 09:40:00 |
| Presentation Time | 20 minutes |
| Registration for | CS |
| Paper # | CS2010-47 |
| Volume (vol) | vol.110 |
| Number (no) | no.269 |
| Page | pp.59-64 |
| #Pages | 6 |
| Date of Issue | 2010-11-04 (CS) |
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