Abstract
In this paper, Cognitive Radios (CRs) collaborate in spectrum sensing to detect random signals corrupted by Gaussian noise. Our analysis is based on a limited time resource assumption. This implies that the time resource dedicated for cooperative spectrum sensing process is constrained and shared between spectrum sensing time and results reporting time, which depends on the number of sensing users. We use common weighted gain combining detector to detect presence or absence of Primary User (PU). In order to find optimum gains, number of users and detection threshold, we maximize the achievable throughput with two approaches so that the predefined constraints on detection and false alarm probabilities are satisfied to protect the cooperative network performance quality. Analytical results in addition to simulation results show that the proposed schemes significantly outperform similar traditional detectors.
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References
Ahsant, B., Viswanathan, R.: A review of cooperative spectrum sensing in cognitive radios. In: Mukhopadhyay, S.C., Jayasundera, K.P., Fuchs, A. (eds.) Advancement in Sensing Technology. SSMI, vol. 1, pp. 69–80. Springer, Heidelberg (2013)
Sedighi, S., Pourgharehkhan, Z., Taherpour, A., Khattab, T.: Distributed spectrum sensing of correlated observations in cognitive radio networks. In: 7th IEEE GCC Conference and Exhibition (GCC), IEEE 2013, pp. 483–488 (2013)
Pourgharehkhan, Z., Sedighi, S., Taherpour, A. Uysal, M.: Spectrum sensing of correlated subbands with colored noise in cognitive radios. In: Wireless Communications and Networking Conference (WCNC). IEEE, pp. 1017–1022 (2012)
Akyildiz, I.F., Lo, B.F., Balakrishnan, R.: Cooperative spectrum sensing in cognitive radio networks: a survey. Physical Communication 4(1), 40–62 (2011)
Chen, Y.: Optimum number of secondary users in collaborative spectrum sensing considering resources usage efficiency. IEEE Communications Letters 12(12), 877–879 (2008)
Althunibat, S., Granelli, F.: An objection-based collaborative spectrum sensing for cognitive radio networks. IEEE Communications Letters 18(8), 1291–1294 (2014)
Li, H., Cheng, X., Li, K., Hu, C., Zhang, N., Xue, W.: Robust collaborative spectrum sensing schemes for cognitive radio networks. IEEE Transactions on Parallel andDistributed Systems 25(8), 2190–2200 (2014)
Quan, Z., Cui, S., Sayed, A.H.: Optimal linear cooperation for spectrum sensing in cognitive radio networks. IEEE Journal of Selected Topics in SignalProcessing 2(1), 28–40 (2008)
Quan, Z., Cui, S., Sayed, A.: An optimal strategy for cooperative spectrum sensing in cognitive radio networks. In: Global Telecommunications Conference, GLOBECOM 2007. IEEE, pp. 2947–2951 (2007)
Peh, E., Liang, Y., Guan, Y., Zeng, Y.: Cooperative spectrum sensing in cognitive radio networks with weighted decision fusion schemes. IEEE Transactions on Wireless Communications 9(12), 3838–3847 (2010)
Quan, Z., Cui, S., Sayed, A.H., Poor, H.V.: Optimal multiband joint detection for spectrum sensing in cognitive radio networks. IEEE Transactions on SignalProcessing 57(3), 1128–1140 (2009)
Peh, E.C.Y., Liang, Y.-C., Guan, Y.L., Zeng, Y.: Optimization of cooperative sensing in cognitive radio networks: a sensing-throughput tradeoff view. IEEE Transactions on Vehicular Technology 58(9), 5294–5299 (2009)
Hoseini, P.P., Beaulieu, N.C.: An optimal algorithm for wideband spectrum sensing in cognitive radio systems. In: Communications (ICC). IEEE, pp. 1–6 (2010)
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© 2015 Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Mohammadyan, F., Pourgharehkhan, Z., Taherpour, A., Khattab, T. (2015). Optimization of Collaborative Spectrum Sensing with Limited Time Resource. In: Weichold, M., Hamdi, M., Shakir, M., Abdallah, M., Karagiannidis, G., Ismail, M. (eds) Cognitive Radio Oriented Wireless Networks. CrownCom 2015. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 156. Springer, Cham. https://doi.org/10.1007/978-3-319-24540-9_9
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DOI: https://doi.org/10.1007/978-3-319-24540-9_9
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