Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers
A sensing-then-transmission slot scheduling scheme for opportunistic spectrum access under the interference constraint of primary users (PU) was proposed.First,the throughput of the cognitive radio system (CRS) with channel handoff mechanism and the interference ratio to PU were deduced.An optimizat...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2013-12-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436X.2013.12.005/ |
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| _version_ | 1841539853599113216 |
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| author | Jing ZHANG Yin LU Xi-qi GAO Fu-chun ZHENG |
| author_facet | Jing ZHANG Yin LU Xi-qi GAO Fu-chun ZHENG |
| author_sort | Jing ZHANG |
| collection | DOAJ |
| description | A sensing-then-transmission slot scheduling scheme for opportunistic spectrum access under the interference constraint of primary users (PU) was proposed.First,the throughput of the cognitive radio system (CRS) with channel handoff mechanism and the interference ratio to PU were deduced.An optimization model combined the sensing time and sensing period was also set up.Then,the optimal sensing time and sensing period were derived by maximizing the throughput of the CRS subject to both interference ratio and sensing qua ity constraints.Based on the analysis,a time slot scheduling scheme was finally proposed.The achievable maximum throughput of the CRS was derived too.Simulation results indicate that the proposed slot scheduling scheme can enhance the throughput of the CRS,and fit the changes of interference ratio and sensing quality constraints better. |
| format | Article |
| id | doaj-art-f5ea3d79d10e467995726f6414d6aa66 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2013-12-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-f5ea3d79d10e467995726f6414d6aa662025-01-14T06:41:35ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2013-12-0134424859676162Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ersJing ZHANGYin LUXi-qi GAOFu-chun ZHENGA sensing-then-transmission slot scheduling scheme for opportunistic spectrum access under the interference constraint of primary users (PU) was proposed.First,the throughput of the cognitive radio system (CRS) with channel handoff mechanism and the interference ratio to PU were deduced.An optimization model combined the sensing time and sensing period was also set up.Then,the optimal sensing time and sensing period were derived by maximizing the throughput of the CRS subject to both interference ratio and sensing qua ity constraints.Based on the analysis,a time slot scheduling scheme was finally proposed.The achievable maximum throughput of the CRS was derived too.Simulation results indicate that the proposed slot scheduling scheme can enhance the throughput of the CRS,and fit the changes of interference ratio and sensing quality constraints better.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436X.2013.12.005/opportunistic spectrum accessslot scheduling optimizationinterference constraintsystem throughput |
| spellingShingle | Jing ZHANG Yin LU Xi-qi GAO Fu-chun ZHENG Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers Tongxin xuebao opportunistic spectrum access slot scheduling optimization interference constraint system throughput |
| title | Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers |
| title_full | Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers |
| title_fullStr | Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers |
| title_full_unstemmed | Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers |
| title_short | Sensing-then-transmission slot scheduling optimization for opportu-nistic spectrum access under the interference constraint of primary us-ers |
| title_sort | sensing then transmission slot scheduling optimization for opportu nistic spectrum access under the interference constraint of primary us ers |
| topic | opportunistic spectrum access slot scheduling optimization interference constraint system throughput |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436X.2013.12.005/ |
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