Dynamic spectrum allocation based on clone selection algorithm in cognitive heterogeneous wireless networks
The system model of cognitive heterogeneous wireless networks was given.Based on this system model,the problem of dynamic spectrum allocation was formulated as a constrained 0-1 integer programming with maximizing the network utility in mind,and considering the demand for spectrum from various radio...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2012-07-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)07-0059-08/ |
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| Summary: | The system model of cognitive heterogeneous wireless networks was given.Based on this system model,the problem of dynamic spectrum allocation was formulated as a constrained 0-1 integer programming with maximizing the network utility in mind,and considering the demand for spectrum from various radio access networks、the interference between them and heterogeneous granularity channels because of the fact that different radio access technologies use channels with different widths.An intelligent algorithm named clone selection algorithm was applied to solve this problem within which a new coding scheme for the antibody was proposed based on the demand for spectrum and heterogeneous granularity channels.Simulation results show that the proposed method could improve the network utility and spectrum utilization compared with greedy allocation algorithm. |
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| ISSN: | 1000-436X |