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Collaborative spectrum sensing with imperfect gaussian channel estimation
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Chen, Yunfei and Beaulieu, Norman C. (2009) Collaborative spectrum sensing with imperfect gaussian channel estimation. In: IEEE Wireless Communications and Networking Conference, Budapest, Hungary, April 05-08, 2009. Published in: 2009 IEEE Wireless Communications and Networking Conference pp. 498-502. ISBN 978-1-4244-2947-9. doi:10.1109/WCNC.2009.4917629 ISSN 1525-3511.
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Official URL: http://dx.doi.org/10.1109/WCNC.2009.4917629
Abstract
The performance of collaborative spectrum sensing for cognitive radio in a lognormal shadowing and Rayleigh fading channel is investigated. Unlike previous works that assume perfect knowledge of the average channel signal-to-noise ratio, this paper considers the realistic case where estimation of the average channel signal-to-noise ratio has error.. Furthermore, while previous works have designed and examined estimators based on assuming that the channel samples used in the average signal-to-noise ratio estimators are noiseless, the present work assumes that the channel samples are noisy, as is the case in practical systems. Numerical results show that the probability of missed opportunity decreases as the estimation error decreases, as expected. Perhaps unexpectedly, the results also show that in the presence of noise, there exists a threshold phenomenon for the noise level. Below a particular threshold, the probability of missed opportunity increases as the noise level increases. Yet above this threshold, the probability of missed opportunity decreases as the noise level increases.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Series Name: | IEEE Wireless Communications and Networking Conference | ||||
| Journal or Publication Title: | 2009 IEEE Wireless Communications and Networking Conference | ||||
| Publisher: | IEEE | ||||
| ISBN: | 978-1-4244-2947-9 | ||||
| ISSN: | 1525-3511 | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Number of Pages: | 5 | ||||
| Page Range: | pp. 498-502 | ||||
| DOI: | 10.1109/WCNC.2009.4917629 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | IEEE Wireless Communications and Networking Conference | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Budapest, Hungary | ||||
| Date(s) of Event: | April 05-08, 2009 |
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