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2015 | OriginalPaper | Buchkapitel

3. A Primary User Localization Method in Cognitive Radio Networks

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Abstract

Localization of primary user (PU) is the key problem for location-aware spectrum allocation in cognitive radio networks (CRNs). In order to improve spectrum efficiency and reduce the interference from secondary users (SUs) to PU, localization of PU must be rapid and accurate enough. Aiming at the drawback of existing localization algorithm for PU localization, a PU localization algorithm based on node selection is proposed. The algorithm is suitable for PU localization with unknown transmit power and selects nodes based on geometric precision. The simulation results show that the proposed scheme has a good performance in terms of localization accuracy. Meanwhile, the complexity and communication traffic are reduced because of selecting part of the secondary users.

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Metadaten
Titel
A Primary User Localization Method in Cognitive Radio Networks
verfasst von
Xinyue Fan
Chao Tong
Fei Zhou
Copyright-Jahr
2015
DOI
https://doi.org/10.1007/978-3-319-08991-1_3

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