Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access
Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver. Both the cases of all-participate relaying and selective relaying are considered. The...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Computer Networks and Communications |
| Online Access: | http://dx.doi.org/10.1155/2012/294581 |
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| author | Ammar Zafar Mohamed-Slim Alouini Yunfei Chen Redha M. Radaydeh |
| author_facet | Ammar Zafar Mohamed-Slim Alouini Yunfei Chen Redha M. Radaydeh |
| author_sort | Ammar Zafar |
| collection | DOAJ |
| description | Optimal resource allocation for cooperative cognitive radio networks with opportunistic
access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver. Both the cases of all-participate relaying and selective relaying are considered. The objective function is derived and the constraints are detailed for both scenarios. It is then shown that the objective functions and the constraints are nonlinear and nonconvex functions of the parameters of interest, that is, source and relay powers, symbol time, and sensing time. Therefore, it is difficult to obtain closed-form solutions for the optimal resource allocation. The optimization problem is then solved using numerical techniques. Numerical results show that the all-participate system provides better performance than its selection counterpart, at the cost of greater resources. |
| format | Article |
| id | doaj-art-abc96a1349c149c28cc54a8185e8e033 |
| institution | Kabale University |
| issn | 2090-7141 2090-715X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Computer Networks and Communications |
| spelling | doaj-art-abc96a1349c149c28cc54a8185e8e0332025-02-03T05:58:38ZengWileyJournal of Computer Networks and Communications2090-71412090-715X2012-01-01201210.1155/2012/294581294581Optimizing Cooperative Cognitive Radio Networks with Opportunistic AccessAmmar Zafar0Mohamed-Slim Alouini1Yunfei Chen2Redha M. Radaydeh3Electrical Engineering Program, KAUST, Al Khawarizmi Applied Mathematics Building 1, Mail Box 2675, Makkah Province, Thuwal 23955-6900, Saudi ArabiaElectrical Engineering Program, KAUST, Al Khawarizmi Applied Mathematics Building 1, Mail Box 2675, Makkah Province, Thuwal 23955-6900, Saudi ArabiaSchool of Engineering, University of Warwick, Coventry, CV4 7AL, UKElectrical Engineering Department, KAUST, Thuwal 23955-6900, Saudi ArabiaOptimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver. Both the cases of all-participate relaying and selective relaying are considered. The objective function is derived and the constraints are detailed for both scenarios. It is then shown that the objective functions and the constraints are nonlinear and nonconvex functions of the parameters of interest, that is, source and relay powers, symbol time, and sensing time. Therefore, it is difficult to obtain closed-form solutions for the optimal resource allocation. The optimization problem is then solved using numerical techniques. Numerical results show that the all-participate system provides better performance than its selection counterpart, at the cost of greater resources.http://dx.doi.org/10.1155/2012/294581 |
| spellingShingle | Ammar Zafar Mohamed-Slim Alouini Yunfei Chen Redha M. Radaydeh Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access Journal of Computer Networks and Communications |
| title | Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access |
| title_full | Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access |
| title_fullStr | Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access |
| title_full_unstemmed | Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access |
| title_short | Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access |
| title_sort | optimizing cooperative cognitive radio networks with opportunistic access |
| url | http://dx.doi.org/10.1155/2012/294581 |
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