Paper Info
Title
Multichannel cooperative sensing for cognitive radio with users owning heterogeneous sensing ability
Abstract
AbstractMultichannel cooperative sensing MCS is an effective method for dynamic spectrum access in cognitive radio networks. In contrast to most existing work on MCS that considered secondary users with homogeneous sensing ability, this paper studies the MCS problem for secondary users with heterogeneous sensing ability in terms of sensing accuracy. We further take into account different parameters of primary channels such as bandwidth, probability of being idle in each sensing period, and frequency selective fading at the sensing receiver. The MCS problem is formulated as a weapon target assignment problem, where more sensing resources are assigned to channels that are more valuable. This weapon target assignment problem is transformed to an integer generalized network flow problem with convex flow costs to obtain the lower bound solution, and then solved by the branch and bound algorithm with this bound to yield the exact scheme. To reduce computational complexity, a heuristic scheme is also proposed, which has approximate performance compared with the exact scheme. Finally, extensive simulation results for different scenarios illustrate the performance improvements of the proposed schemes over the existing scheme. Copyright © 2013 John Wiley & Sons, Ltd.
Year
DOI
Venue
2014
10.1002/dac.2583
Periodicals
Keywords
Field
DocType
cognitive radio, cooperative sensing, weapon target assignment, branch and bound
Weapon target assignment problem,Flow network,Heuristic,Branch and bound,Computer science,Fading,Computer network,Bandwidth (signal processing),Computational complexity theory,Cognitive radio
Journal
Volume
Issue
ISSN
27
12
1074-5351
Citations 
PageRank 
References 
2
0.36
20
Authors
3
Name
Order
Citations
PageRank
Wendong Ge1123.10
Hong Ji220.36
Xi Li315419.69