@article{afa556c278a445a9aa3f6fc0e48eb494,
title = "A cooperative bayesian nonparametric framework for primary user activity monitoring in cognitive radio networks",
abstract = "This paper introduces a novel approach that enables a number of cognitive radio devices that are observing the availability pattern of a number of primary users (PUs), to cooperate and use Bayesian nonparametric techniques to estimate the distributions of the PUs' activity pattern. To address this problem, a coalitional game is formulated between the cognitive devices and an algorithm for cooperative coalition formation is proposed. It is shown that the proposed coalition formation algorithm allows the cognitive nodes that are experiencing a similar behavior from some PUs to self-organize into disjoint, independent coalitions. Inside each coalition, the cooperative cognitive nodes use Bayesian nonparametric techniques so as to improve the accuracy of the estimated PUs' activity distributions. Simulation results show that the proposed algorithm significantly improves the estimates of the PUs' activity patterns.",
keywords = "Bayesian nonparametrics, Cognitive radio, game theory, inference, monitoring",
author = "Walid Saad and Zhu Han and Poor, {H. Vincent} and Tamer Basar and Song, {Ju Bin}",
note = "Funding Information: Manuscript received 20 January 2011; revised 20 June 2011. This work was in part supported by the Air Force Office of Scientific Research Grant FA9550-08-1-0480, in part by the National Science Foundation under Grants CNS-0910461, CNS-0953377, CNS-0905556, ECCS-1028782; and in part by the National Research Foundation of Korea (Grant No.20090075107). Corresponding authors are W. Saad and J. B. Song. W. Saad is with the Electrical and Computer Engineering Department, University of Miami, Coral Gables, FL, USA (e-mail:
[email protected]). Z. Han is with the Electrical and Computer Engineering Department, University of Houston, Houston, TX, USA, (e-mail:
[email protected]). H. V. Poor is with the Electrical Engineering Department, Princeton University, Princeton, NJ, USA, (e-mail:
[email protected]). T. Bas¸ar is with Coordinated Science Laboratory, University of Illinois at Urbana-Champaign, USA, Email: (e-mail:
[email protected]). J. B. Song is with College of Electronics and Information, Kyung Hee University, South Korea (e-mail:
[email protected]). Digital Object Identifier 10.1109/JSAC.2012.121027.",
year = "2012",
doi = "10.1109/JSAC.2012.121027",
language = "English (US)",
volume = "30",
pages = "1815--1822",
journal = "IEEE Journal on Selected Areas in Communications",
issn = "0733-8716",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "9",
}