Distributed power control and random access for spectrum sharing with QoS constraint
Computer Communications
A cognitive approach to spectrum sensing in virtual unlicensed wireless network
Proceedings of the International Conference on Advances in Computing, Communication and Control
Primary-prioritized Markov approach for dynamic spectrum allocation
IEEE Transactions on Wireless Communications
Joint Subchannel, Rate and Power Allocation in OFDMA-Based Cognitive Wireless Mesh Network
Wireless Personal Communications: An International Journal
Initial spectrum access control with QoS protection for active users in cognitive wireless networks
International Journal of Communication Systems
Computer Networks: The International Journal of Computer and Telecommunications Networking
Performance analysis with different sensing results in the cognitive radio networks
ICPCA/SWS'12 Proceedings of the 2012 international conference on Pervasive Computing and the Networked World
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To combat recent spectral overcrowding in unlicensed bands, the FCC has been investigating new ways to manage RF resources. The idea is to let people use licensed frequencies, provided they can guarantee interference perceived by the primary license holders will be minimal. With advances in software and cognitive radio, practical ways of doing this are on the horizon. In 2003, the FCC released a memorandum seeking comment on the interference temperature model (ITM) for controlling spectrum use. Formally defining and analyzing techniques for implementing this model are the primary goals of this paper. Two interpretations of the ITM are developed and for each, we examine tradeoffs between power, bandwidth, and capacity. From these relationships, algorithms for computing RF transmission parameters are developed. These algorithms seek to maximize both capacity and spectral efficiency for a given RF environment. Additionally, we describe ways to choose a center frequency that will optimize future performance, subject to the constraints of the ITM. Copyright © 2007 John Wiley & Sons, Ltd. The opinions expressed in this document represent those of the author, and should not be considered an official opinion or endorsement by the Department of Defense or US Federal Government.