Wideband spectrum sensing order for cognitive radios with sensing errors and channel SNR probing uncertainty
Type
ArticleAuthors
Hamza, Doha R.Aïssa, Sonia
KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2013-04Permanent link to this record
http://hdl.handle.net/10754/562709
Metadata
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A secondary user (SU) seeks to transmit by sequentially sensing statistically independent primary user (PU) channels. If a channel is sensed free, it is probed to estimate the signal-to-noise ratio between the SU transmitter-receiver pair over the channel. We jointly optimize the channel sensing time, the sensing decision threshold, the channel probing time, together with the channel sensing order under imperfect synchronization between the PU and the SU. The sensing and probing times and the decision threshold are assumed to be the same for all channels. We maximize a utility function related to the SU throughput under the constraint that the collision probability with the PU is kept below a certain value and taking sensing errors into account. We illustrate the optimal policy and the variation of SU throughput with various system parameters. © 2012 IEEE.Citation
Hamza, D., & Aissa, S. (2013). Wideband Spectrum Sensing Order for Cognitive Radios with Sensing Errors and Channel SNR Probing Uncertainty. IEEE Wireless Communications Letters, 2(2), 151–154. doi:10.1109/wcl.2012.121812.120809ae974a485f413a2113503eed53cd6c53
10.1109/WCL.2012.121812.120809