Adaptive sub-optimal energy detection based wideband spectrum sensing for cognitive radios

Imani, Sajjad; Dehkordi, Amin Banitalebi; Kamarei, Mahmoud

doi:10.1109/inecce.2011.5953843

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…We assume that there are free subbands among the whole set of subbands and width of all subbands is equal to the subband with minimum width. In order to find the subband with minimum width, we follow a similar approach as [12][13][14].…”

Section: Third Scenariomentioning

confidence: 99%

“…a) Spread spectrum wideband signal b) Frequency holes detection with approach stated in[14] Detection probability versus SNR Detection probability versus false detection probability False alarm probability versus detection threshold…”

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confidence: 99%

“…Figure 2. a) Spread spectrum wideband signal b) Frequency holesdetection with approach stated in[14] …”

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A random matrix approach to wide band spectrum sensing: Unknown noise variance case

Imani

Banitalebi-Dehkordi

Cheraghi

2013

2013 21st Iranian Conference on Electrical Engineering (ICEE)

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In this paper three different scenarios in wide band spectrum sensing have been studied. While the signal and noise statistics are supposed to be unspecified, random matrixes have been utilized in order to estimate the noise variance. These scenarios are: 1-Number of subbands is specified and there is enough information regarding being used or being unused for each of them. 2-Number of subbands is known but there is no information about usage distribution among them. 3-Number of subbands is unknown. Simulation results showed the superior performance of the proposed scheme. Regarding the number of samples, the proposed method requires less number of samples compared to the cyclo-stationary spectrum sensing algorithms and more samples compared to the energy detection based methods. But, regarding the detection probability, the proposed method is superior compared to both other spectrum sensing methods.

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Section: Third Scenariomentioning

confidence: 99%

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confidence: 99%