Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective
The throughput-delay trade-off problem for cooperative spectrum sensing (CSS) is investigated. It is proved that the maximum achievable throughput and the minimum transmission delay cannot be obtained simultaneously. An efficient algorithm is proposed to optimize the sensing bandwidth and the final...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Abstract and Applied Analysis |
| Online Access: | http://dx.doi.org/10.1155/2014/430696 |
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| _version_ | 1849412139306975232 |
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| author | Hang Hu Hang Zhang Hong Yu |
| author_facet | Hang Hu Hang Zhang Hong Yu |
| author_sort | Hang Hu |
| collection | DOAJ |
| description | The throughput-delay trade-off problem for cooperative spectrum sensing (CSS) is investigated. It is proved that the maximum achievable throughput and the minimum transmission delay cannot be obtained simultaneously. An efficient algorithm is proposed to optimize the sensing bandwidth and the final decision threshold jointly such that the throughput is maximized while the delay is constrained. It is demonstrated that convex optimization plays an essential role in solving the problem in an efficient way. Simulation results show that the proposed optimal scheme can significantly improve the throughput of the secondary users (SUs) under the constraint that the delay Quality of Service (QoS) requirements of the SUs are satisfied. |
| format | Article |
| id | doaj-art-5e7efb86bd174fdeaf15b9f69490bcd6 |
| institution | Kabale University |
| issn | 1085-3375 1687-0409 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Abstract and Applied Analysis |
| spelling | doaj-art-5e7efb86bd174fdeaf15b9f69490bcd62025-08-20T03:34:32ZengWileyAbstract and Applied Analysis1085-33751687-04092014-01-01201410.1155/2014/430696430696Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization PerspectiveHang Hu0Hang Zhang1Hong Yu2College of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaCollege of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaCollege of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaThe throughput-delay trade-off problem for cooperative spectrum sensing (CSS) is investigated. It is proved that the maximum achievable throughput and the minimum transmission delay cannot be obtained simultaneously. An efficient algorithm is proposed to optimize the sensing bandwidth and the final decision threshold jointly such that the throughput is maximized while the delay is constrained. It is demonstrated that convex optimization plays an essential role in solving the problem in an efficient way. Simulation results show that the proposed optimal scheme can significantly improve the throughput of the secondary users (SUs) under the constraint that the delay Quality of Service (QoS) requirements of the SUs are satisfied.http://dx.doi.org/10.1155/2014/430696 |
| spellingShingle | Hang Hu Hang Zhang Hong Yu Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective Abstract and Applied Analysis |
| title | Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective |
| title_full | Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective |
| title_fullStr | Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective |
| title_full_unstemmed | Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective |
| title_short | Throughput-Delay Trade-Off for Cognitive Radio Networks: A Convex Optimization Perspective |
| title_sort | throughput delay trade off for cognitive radio networks a convex optimization perspective |
| url | http://dx.doi.org/10.1155/2014/430696 |
| work_keys_str_mv | AT hanghu throughputdelaytradeoffforcognitiveradionetworksaconvexoptimizationperspective AT hangzhang throughputdelaytradeoffforcognitiveradionetworksaconvexoptimizationperspective AT hongyu throughputdelaytradeoffforcognitiveradionetworksaconvexoptimizationperspective |