Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency
The joint source-relay power allocation issue in green dual-hop single antenna relaying systems was investi-gated from the energy efficiency point of view. By considering a practical power consumption model, the optimal algo-rithm in order to satisfy the constraints of system quality of service was...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2016-07-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016140/ |
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| author | Bao-feng JI Jia YANG Yi-dan WANG Ying HU Chun-guo LI Liang SONG |
| author_facet | Bao-feng JI Jia YANG Yi-dan WANG Ying HU Chun-guo LI Liang SONG |
| author_sort | Bao-feng JI |
| collection | DOAJ |
| description | The joint source-relay power allocation issue in green dual-hop single antenna relaying systems was investi-gated from the energy efficiency point of view. By considering a practical power consumption model, the optimal algo-rithm in order to satisfy the constraints of system quality of service was proposed. The non-convex problem was con-verted into the convex problem through high power approximation and then the highly complicated optimization problem was solved by deliberately manipulating the Lagrangian function using the properties of the Lambert function. The opti-mal transmit power of the source and that of the relay are derived in the form of analytical expressions based on the maximization of EE with a guarantee of the required spectral efficiency(SE).It is shown that the optimal relay-to-source power ratio is adaptive to the ratio of the instantaneous two-hop channel gains. Numerical simulations have illustrated the effectiveness of proposed scheme. |
| format | Article |
| id | doaj-art-48b17d220665451f9af405e37eb2aaf4 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2016-07-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-48b17d220665451f9af405e37eb2aaf42025-01-14T06:55:48ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2016-07-013712413159702295Power allocation algorithms in two-hop relaying networks based on optimal energy efficiencyBao-feng JIJia YANGYi-dan WANGYing HUChun-guo LILiang SONGThe joint source-relay power allocation issue in green dual-hop single antenna relaying systems was investi-gated from the energy efficiency point of view. By considering a practical power consumption model, the optimal algo-rithm in order to satisfy the constraints of system quality of service was proposed. The non-convex problem was con-verted into the convex problem through high power approximation and then the highly complicated optimization problem was solved by deliberately manipulating the Lagrangian function using the properties of the Lambert function. The opti-mal transmit power of the source and that of the relay are derived in the form of analytical expressions based on the maximization of EE with a guarantee of the required spectral efficiency(SE).It is shown that the optimal relay-to-source power ratio is adaptive to the ratio of the instantaneous two-hop channel gains. Numerical simulations have illustrated the effectiveness of proposed scheme.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016140/energy efficienceyresources allocationconvex optimization |
| spellingShingle | Bao-feng JI Jia YANG Yi-dan WANG Ying HU Chun-guo LI Liang SONG Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency Tongxin xuebao energy efficiencey resources allocation convex optimization |
| title | Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency |
| title_full | Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency |
| title_fullStr | Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency |
| title_full_unstemmed | Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency |
| title_short | Power allocation algorithms in two-hop relaying networks based on optimal energy efficiency |
| title_sort | power allocation algorithms in two hop relaying networks based on optimal energy efficiency |
| topic | energy efficiencey resources allocation convex optimization |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016140/ |
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