TY - GEN
T1 - Distributed algorithm for collaborative detection in cognitive radio networks
AU - Liang, Yingbin
AU - Lai, Lifeng
AU - Halloran, John
PY - 2009
Y1 - 2009
N2 - A cognitive radio wireless network is investigated, in which a number of primary users (PUs) transmit in orthogonal frequency bands. There are also a number of secondary users (SUs) in the network, which monitor transmission opportunities in these frequency bands by collaboratively detecting whether each PU is transmitting. Each SU can participate in detecting only one PU's transmission at a time although it may locate in multiple PUs' detection ranges. A network management issue is studied, which addresses the best assignment of SUs to detecting PUs so that the overall probability of detection error is minimized. A distributed implementation of the elimination algorithm is proposed to efficiently find the best assignment by drawing connection between the current problem and the inference problem in the context of probabilistic graphic models. The graphic representation of the problem is also discussed.
AB - A cognitive radio wireless network is investigated, in which a number of primary users (PUs) transmit in orthogonal frequency bands. There are also a number of secondary users (SUs) in the network, which monitor transmission opportunities in these frequency bands by collaboratively detecting whether each PU is transmitting. Each SU can participate in detecting only one PU's transmission at a time although it may locate in multiple PUs' detection ranges. A network management issue is studied, which addresses the best assignment of SUs to detecting PUs so that the overall probability of detection error is minimized. A distributed implementation of the elimination algorithm is proposed to efficiently find the best assignment by drawing connection between the current problem and the inference problem in the context of probabilistic graphic models. The graphic representation of the problem is also discussed.
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U2 - 10.1109/ALLERTON.2009.5394792
DO - 10.1109/ALLERTON.2009.5394792
M3 - Conference contribution
AN - SCOPUS:77949625953
SN - 9781424458714
T3 - 2009 47th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2009
SP - 394
EP - 399
BT - 2009 47th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2009
T2 - 2009 47th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2009
Y2 - 30 September 2009 through 2 October 2009
ER -