Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks
In this paper, the Filter-and-Forward strategy is developed for cooperative relays in Cognitive Radio networks with underlay structure and frequency selective fading channels. A cost function is defined to minimize the required transmitting power of the relay networks and the secondary user. This is...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Iran Telecom Research Center
2013-06-01
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| Series: | International Journal of Information and Communication Technology Research |
| Subjects: | |
| Online Access: | http://ijict.itrc.ac.ir/article-1-155-en.html |
| _version_ | 1811169301609054208 |
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| author | Saeideh Mohammadkhani Mohammad Hossein Kahaei Seyed Mohammad Razavizadeh |
| author_facet | Saeideh Mohammadkhani Mohammad Hossein Kahaei Seyed Mohammad Razavizadeh |
| author_sort | Saeideh Mohammadkhani |
| collection | DOAJ |
| description | In this paper, the Filter-and-Forward strategy is developed for cooperative relays in Cognitive Radio networks with underlay structure and frequency selective fading channels. A cost function is defined to minimize the required transmitting power of the relay networks and the secondary user. This is performed subject to keeping the power of noise and interferences at the primary receiver less than a predefined limit and an SINR above a given threshold. In this structure, a power control is also carried out on the secondary transmitter. Simulation results show that the proposed algorithm converges to an optimal solution based on the interior point method. The results show that compared to the Amplify-and-Forward strategy, we achieve a higher SINR threshold in the secondary receiver and need a lower transmitting power at the relays and secondary transmitter. |
| first_indexed | 2024-04-10T16:40:08Z |
| format | Article |
| id | doaj.art-87b59d00e9244715af802ea0a133ab94 |
| institution | Directory Open Access Journal |
| issn | 2251-6107 2783-4425 |
| language | English |
| last_indexed | 2024-04-10T16:40:08Z |
| publishDate | 2013-06-01 |
| publisher | Iran Telecom Research Center |
| record_format | Article |
| series | International Journal of Information and Communication Technology Research |
| spelling | doaj.art-87b59d00e9244715af802ea0a133ab942023-02-08T07:53:26ZengIran Telecom Research CenterInternational Journal of Information and Communication Technology Research2251-61072783-44252013-06-01521117Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay NetworksSaeideh Mohammadkhani0Mohammad Hossein Kahaei1Seyed Mohammad Razavizadeh2 In this paper, the Filter-and-Forward strategy is developed for cooperative relays in Cognitive Radio networks with underlay structure and frequency selective fading channels. A cost function is defined to minimize the required transmitting power of the relay networks and the secondary user. This is performed subject to keeping the power of noise and interferences at the primary receiver less than a predefined limit and an SINR above a given threshold. In this structure, a power control is also carried out on the secondary transmitter. Simulation results show that the proposed algorithm converges to an optimal solution based on the interior point method. The results show that compared to the Amplify-and-Forward strategy, we achieve a higher SINR threshold in the secondary receiver and need a lower transmitting power at the relays and secondary transmitter.http://ijict.itrc.ac.ir/article-1-155-en.htmlcognitive radiocooperative beamformingfilter-and-forwardpower controlconvex optimizationfrequency selective channel |
| spellingShingle | Saeideh Mohammadkhani Mohammad Hossein Kahaei Seyed Mohammad Razavizadeh Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks International Journal of Information and Communication Technology Research cognitive radio cooperative beamforming filter-and-forward power control convex optimization frequency selective channel |
| title | Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks |
| title_full | Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks |
| title_fullStr | Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks |
| title_full_unstemmed | Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks |
| title_short | Cooperative Filter-and-Forward Beamforming in Cognitive Radio Relay Networks |
| title_sort | cooperative filter and forward beamforming in cognitive radio relay networks |
| topic | cognitive radio cooperative beamforming filter-and-forward power control convex optimization frequency selective channel |
| url | http://ijict.itrc.ac.ir/article-1-155-en.html |
| work_keys_str_mv | AT saeidehmohammadkhani cooperativefilterandforwardbeamformingincognitiveradiorelaynetworks AT mohammadhosseinkahaei cooperativefilterandforwardbeamformingincognitiveradiorelaynetworks AT seyedmohammadrazavizadeh cooperativefilterandforwardbeamformingincognitiveradiorelaynetworks |