Detection probability analysis of cooperative spectrum sensing with the N<sup>th</sup>best relay selection
In the cognitive radio system,the optimal relay would be selected from the n available ones to obtain the best sensing performance.However,in actual systems,the secondary or even the more general N<sup>th</sup>best relay may be selected for various reasons.Therefore,the cooperative spect...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2011-11-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/1000-436X(2011)11-0176-07/ |
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| Summary: | In the cognitive radio system,the optimal relay would be selected from the n available ones to obtain the best sensing performance.However,in actual systems,the secondary or even the more general N<sup>th</sup>best relay may be selected for various reasons.Therefore,the cooperative spectrum sensing based on the N<sup>th</sup>best relay selection was proposed.The closed-form expression of the detection probability was derived in Rayleigh fading channels.Numerical results show that the detection probability declines continuously even below the one of the arbitrary selection as N increases,and that the one based on the optimal or suboptimal selection increases obviously but the one based on the worst or near worst selection decreases slightly as n increases. |
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| ISSN: | 1000-436X |