Abstract
As the radio spectrum is becoming more and more crowded, the cognitive radio has recently become a hot research topic to improve the spectrum utilization efficiency. It is well known that the success of cognitive radio depends heavily on fast and efficient spectrum sensing that can be very difficult in practice. Toward this end, this paper introduces a new guard-resident collaborative spectrum sensing topology for a cognitive ad-hoc network. In particular, we classify cognitive nodes as either resident or guard based on the spectrum neighbor decision and distributed boundary search. The guard nodes sense the spectrum and then inform the resident nodes that are free from spectrum sensing about the environmental changes. The analysis and simulation results show that the proposed algorithm can significantly reduce the total spectrum sensing load and improve the sensing accuracy.
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© 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Du, Y., Li, H., Wu, S., Lin, W., Wang, X. (2012). A New Cooperative Spectrum Sensing Scheme for Cognitive Ad-Hoc Networks. In: Ren, P., Zhang, C., Liu, X., Liu, P., Ci, S. (eds) Wireless Internet. WICON 2011. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 98. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30493-4_12
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DOI: https://doi.org/10.1007/978-3-642-30493-4_12
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