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| Presentation | 2009-01-23 16:10 Primary User Detection with Distributed Spectrum Sensors over Rayleigh Fading Channel Chen Sun, Yohannes D. Alemseged, Ha Nguyen Tran, Hiroshi Harada (NICT)  SR2008-86 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This study addresses detection of primary users (PUs) for cognitive radio system (CRS) with distributed spectrum sensors (DSSs) in Rayleigh fading environment. Three sensing schemes using DSSs that employ energy detection (ED) are investigated as cooperative sensing, collaborative sensing and selective sensing. For the cooperative sensing, each DSS makes hard decision after sensing and transmits these information by on-off keying (OOK) singling to a secondary user (SU) that performs data fusion. In terms of collaborative sensing, multiple DSSs exchange the hard decision information after sensing and make data fusion at a selected DSS. Then, the selected DSS transmits the decision information to the SU with OOK signaling. As for the selective sensing, sensing information from multiple sensors is selected. And, one sensor is chosen to send this selected sensing information to the SU. In this paper, a closed-form expression for the probability of detection by ED with selective combining (SC) in Rayleigh fading environment is derived. The expression includes probability of detection in Rayleigh fading as a special case and extends to the situation with L branch SC. Applying this expression to the PU detection problem, analytical models for evaluating the three sensing schemes are obtained. Results show that at 5-dB signal-to-noise ratio (SNR) and using 3 DSSs, the probability of PU detection is increased from 0.02 to 0.3 and 0.4 by collaborative sensing and collaborative sensing, respectively. Results also show that selected sensing achieves comparable performance of collaborative sensing but it provides a lower false alarm rate. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | cognitive radio / spectrum sensing / cooperative sensing / collaborative sensing / selective sensing / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 400, SR2008-86, pp. 111-117, Jan. 2009. | |
| Paper # | SR2008-86 | |
| Date of Issue | 2009-01-15 (SR) | |
| 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 | SR2008-86 |
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| Conference Information | |
| Committee | SR |
| Conference Date | 2009-01-22 - 2009-01-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Cognitive radio, invited talk, and general session |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2009-01-SR |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Primary User Detection with Distributed Spectrum Sensors over Rayleigh Fading Channel |
| Sub Title (in English) | |
| Keyword(1) | cognitive radio |
| Keyword(2) | spectrum sensing |
| Keyword(3) | cooperative sensing |
| Keyword(4) | collaborative sensing |
| Keyword(5) | selective sensing |
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| 1st Author's Name | Chen Sun |
| 1st Author's Affiliation | National Institute of Information & Communications Technology (NICT) |
| 2nd Author's Name | Yohannes D. Alemseged |
| 2nd Author's Affiliation | National Institute of Information & Communications Technology (NICT) |
| 3rd Author's Name | Ha Nguyen Tran |
| 3rd Author's Affiliation | National Institute of Information & Communications Technology (NICT) |
| 4th Author's Name | Hiroshi Harada |
| 4th Author's Affiliation | National Institute of Information & Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2009-01-23 16:10:00 |
| Presentation Time | 25 minutes |
| Registration for | SR |
| Paper # | SR2008-86 |
| Volume (vol) | vol.108 |
| Number (no) | no.400 |
| Page | pp.111-117 |
| #Pages | 7 |
| Date of Issue | 2009-01-15 (SR) |
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