Optimal Spectrum Allocation of Cognitive Radio Network Under Underlay Model
Optimal Spectrum Allocation of Cognitive Radio Network Under Underlay Model
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DOI：
10.1007/s11277-017-4514-7
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Jia-jia Zhu
中科院分区：
文献类型：
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作者：
Run-ze Wu;Li-yuan Gao;Liang-rui Tang;Jia-jia Zhu
Cognitive radio has been regarded as a promising technology to improve.spectrum utilization significantly. Many studies have discussed underlay spectrum sharing.and power control, but issues such as the interference of the primary system have just been.considered as the constraint. In this paper, we build a spectrum allocation mathematical.model which considers different interference intensity according to relative geographic.locations between two SLs in the spectrum-sharing mode of cognitive radio network. Then.it’s converted into multi-objective optimization problem. To solve the spectrum sharing.problem, the multi-objective improved genetic algorithm is adopted. Simulation results.show that our proposed methods greatly outperform the commonly used K-max-cut in.graph theory. It can better realize the network benefit maximization and reduce the disturbance to the primary system by using the multi-objective optimization algorithm.
