21 May 2013 QoS-aware dynamic spectrum access for cognitive radio networks
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Abstract
Ubiquitous wireless networking requires efficient dynamic spectrum access (DSA) among heterogeneous users with diverse transmission types and bandwidth demands. To meet user-specific quality-of-service (QoS) requirements, the power and spectrum allocated to each user should lie inside a power/spectral-shape bounded region in order to be meaningful for the intended application. Most existing DSA methods aim at enhancing the total system utility. As such, spectrum wastage may arise when the system-wide optimal allocation falls outside individual users’ desired regions for QoS provisioning. In this work, novel QoS-aware DSA algorithms are developed for both non-cooperative power allocation (QoSNCPA) and cooperative (QoSCPA) users in cognitive radio (CR) networks. The algorithms maximize the “useful utilities” to the users, and minimize the power consumption and mutual interference within the CR network. Simulations results of the QoSNCPA and QoSCPA for single and multiple channel cases demonstrate the effectiveness of the algorithms for DSA.
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Xin Tian, Xin Tian, Zhi Tian, Zhi Tian, Khanh Pham, Khanh Pham, Erik Blasch, Erik Blasch, Genshe Chen, Genshe Chen, } "QoS-aware dynamic spectrum access for cognitive radio networks", Proc. SPIE 8739, Sensors and Systems for Space Applications VI, 87390P (21 May 2013); doi: 10.1117/12.2015205; https://doi.org/10.1117/12.2015205
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