Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI
In order to improve the suppression capability of parametric perturbation and energy efficiency (EE) of heterogeneous networks (HetNets),a robust resource allocation algorithm was proposed to maximize system EE for reducing cross-tier interference power in non-orthogonal multiple access (NOMA) based...
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| Format: | Article |
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Editorial Department of Journal on Communications
2020-07-01
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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.2020101/ |
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| author | Yongjun XU Hao XIE Qianbin CHEN Jinzhao LIN Qilie LIU |
| author_facet | Yongjun XU Hao XIE Qianbin CHEN Jinzhao LIN Qilie LIU |
| author_sort | Yongjun XU |
| collection | DOAJ |
| description | In order to improve the suppression capability of parametric perturbation and energy efficiency (EE) of heterogeneous networks (HetNets),a robust resource allocation algorithm was proposed to maximize system EE for reducing cross-tier interference power in non-orthogonal multiple access (NOMA) based HetNets.Firstly,the resource optimization problem was formulated as a mixed integer and nonlinear programming one under the constraints of the interference power of macrocell users,maximum transmit power of small cell base station (BS),resource block assignment and the quality of service (QoS) requirement of each small cell user.Then,based on ellipsoid bounded channel uncertainty models,the original problem was converted into the equivalent convex optimization problem by using the convex relaxation method,Dinkelbach method and the successive convex approximation (SCA) method.The analytical solutions were obtained by using the Lagrangian dual approach.Simulation results verifiy that the proposed algorithm had better EE and robustness by comparing it with the existing algorithm under perfect channel state information. |
| format | Article |
| id | doaj-art-0e383ba000be44ca89a320725137adaa |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2020-07-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-0e383ba000be44ca89a320725137adaa2025-01-14T07:19:42ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2020-07-014113114059736718Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSIYongjun XUHao XIEQianbin CHENJinzhao LINQilie LIUIn order to improve the suppression capability of parametric perturbation and energy efficiency (EE) of heterogeneous networks (HetNets),a robust resource allocation algorithm was proposed to maximize system EE for reducing cross-tier interference power in non-orthogonal multiple access (NOMA) based HetNets.Firstly,the resource optimization problem was formulated as a mixed integer and nonlinear programming one under the constraints of the interference power of macrocell users,maximum transmit power of small cell base station (BS),resource block assignment and the quality of service (QoS) requirement of each small cell user.Then,based on ellipsoid bounded channel uncertainty models,the original problem was converted into the equivalent convex optimization problem by using the convex relaxation method,Dinkelbach method and the successive convex approximation (SCA) method.The analytical solutions were obtained by using the Lagrangian dual approach.Simulation results verifiy that the proposed algorithm had better EE and robustness by comparing it with the existing algorithm under perfect channel state information.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020101/imperfect CSIheterogeneous networkNOMArobust resource allocationenergy efficiency maximization |
| spellingShingle | Yongjun XU Hao XIE Qianbin CHEN Jinzhao LIN Qilie LIU Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI Tongxin xuebao imperfect CSI heterogeneous network NOMA robust resource allocation energy efficiency maximization |
| title | Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI |
| title_full | Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI |
| title_fullStr | Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI |
| title_full_unstemmed | Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI |
| title_short | Energy efficiency optimization algorithm for heterogeneous NOMA network based on imperfect CSI |
| title_sort | energy efficiency optimization algorithm for heterogeneous noma network based on imperfect csi |
| topic | imperfect CSI heterogeneous network NOMA robust resource allocation energy efficiency maximization |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020101/ |
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