Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network
An innovative EE-oriented cooperative sensing and transmission scheme in relay-assisted cognitive radio networks,called energy-efficient best-relay cooperative transmission (BCT) was proposed.Based on the BCT scheme,mean energy efficiency (MEE) maximization problem with sensing duration and transmit...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2017-05-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017108/ |
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| _version_ | 1841539483930984448 |
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| author | Li FENG Yu-jun KUANG Bin-wei WU Xin-chuan FU |
| author_facet | Li FENG Yu-jun KUANG Bin-wei WU Xin-chuan FU |
| author_sort | Li FENG |
| collection | DOAJ |
| description | An innovative EE-oriented cooperative sensing and transmission scheme in relay-assisted cognitive radio networks,called energy-efficient best-relay cooperative transmission (BCT) was proposed.Based on the BCT scheme,mean energy efficiency (MEE) maximization problem with sensing duration and transmitting power as optimization variables was modeled for fading channels under constraint of minimal secondary outage probability.By virtue of Jensen’s inequality,the original optimization problem was decomposed into two relatively independent subproblems which solved sensing duration and power allocation respectively.And for the two subproblems,an efficient cross iteration based algorithm was proposed to obtain the suboptimal solutions.Both analytical and simulation results demonstrate that the proposals can achieve significantly higher EE while enhancing reliability of secondary transmission remarkably compared to non-cooperation single cognitive transmission schemesin high QoS requirement. |
| format | Article |
| id | doaj-art-1ed5ed8b510548be814cc0640f327b1e |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-05-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-1ed5ed8b510548be814cc0640f327b1e2025-01-14T07:12:25ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-05-013814515659710432Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio networkLi FENGYu-jun KUANGBin-wei WUXin-chuan FUAn innovative EE-oriented cooperative sensing and transmission scheme in relay-assisted cognitive radio networks,called energy-efficient best-relay cooperative transmission (BCT) was proposed.Based on the BCT scheme,mean energy efficiency (MEE) maximization problem with sensing duration and transmitting power as optimization variables was modeled for fading channels under constraint of minimal secondary outage probability.By virtue of Jensen’s inequality,the original optimization problem was decomposed into two relatively independent subproblems which solved sensing duration and power allocation respectively.And for the two subproblems,an efficient cross iteration based algorithm was proposed to obtain the suboptimal solutions.Both analytical and simulation results demonstrate that the proposals can achieve significantly higher EE while enhancing reliability of secondary transmission remarkably compared to non-cooperation single cognitive transmission schemesin high QoS requirement.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017108/cognitive radiocooperative sensingrelay transmissionenergy efficiencyresource allocation |
| spellingShingle | Li FENG Yu-jun KUANG Bin-wei WU Xin-chuan FU Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network Tongxin xuebao cognitive radio cooperative sensing relay transmission energy efficiency resource allocation |
| title | Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network |
| title_full | Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network |
| title_fullStr | Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network |
| title_full_unstemmed | Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network |
| title_short | Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network |
| title_sort | energy efficient cooperative sensing and transmission in relay assisted cognitive radio network |
| topic | cognitive radio cooperative sensing relay transmission energy efficiency resource allocation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017108/ |
| work_keys_str_mv | AT lifeng energyefficientcooperativesensingandtransmissioninrelayassistedcognitiveradionetwork AT yujunkuang energyefficientcooperativesensingandtransmissioninrelayassistedcognitiveradionetwork AT binweiwu energyefficientcooperativesensingandtransmissioninrelayassistedcognitiveradionetwork AT xinchuanfu energyefficientcooperativesensingandtransmissioninrelayassistedcognitiveradionetwork |