Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network
In this paper, we propose a joint power allocation, time switching (TS) factor and relay selection scheme for an energy harvesting two-way relaying communication network (TWRN), where two transceivers exchange information with the help of a wireless-powered relay. By exploiting the TS architecture a...
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| Format: | Article |
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MDPI AG
2019-02-01
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| Series: | Future Internet |
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| Online Access: | https://www.mdpi.com/1999-5903/11/2/47 |
| _version_ | 1818545613798637568 |
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| author | Xin Song Siyang Xu Zhigang Xie Xiuwei Han |
| author_facet | Xin Song Siyang Xu Zhigang Xie Xiuwei Han |
| author_sort | Xin Song |
| collection | DOAJ |
| description | In this paper, we propose a joint power allocation, time switching (TS) factor and relay selection scheme for an energy harvesting two-way relaying communication network (TWRN), where two transceivers exchange information with the help of a wireless-powered relay. By exploiting the TS architecture at the relay node, the relay node needs to use additional time slots for energy transmission, reducing the transmission rate. Thus, we propose a joint resource allocation algorithm to maximize the max-min bidirectional instantaneous information rate. To solve the original non-convex optimization problem, the objective function is decomposed into three sub-problems and solved sequentially. The closed-form solution of the transmit power of two sources and the optimal TS factor can be obtained by the information rate balancing technology and the proposed time allocation scheme, respectively. At last, the optimal relay node can be obtained. Simulation results show that the performance of the proposed algorithm is better than the traditional schemes and power-splitting (PS) scheme. |
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| institution | Directory Open Access Journal |
| issn | 1999-5903 |
| language | English |
| last_indexed | 2024-12-12T07:42:24Z |
| publishDate | 2019-02-01 |
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| spelling | doaj.art-a34366c5cdd14cff9429bc7b72e87a0e2022-12-22T00:32:45ZengMDPI AGFuture Internet1999-59032019-02-011124710.3390/fi11020047fi11020047Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying NetworkXin Song0Siyang Xu1Zhigang Xie2Xiuwei Han3Engineering Optimization and Smart Antenna Institute, Northeastern University, Qinhuangdao 066004, ChinaEngineering Optimization and Smart Antenna Institute, Northeastern University, Qinhuangdao 066004, ChinaEngineering Optimization and Smart Antenna Institute, Northeastern University, Qinhuangdao 066004, ChinaEngineering Optimization and Smart Antenna Institute, Northeastern University, Qinhuangdao 066004, ChinaIn this paper, we propose a joint power allocation, time switching (TS) factor and relay selection scheme for an energy harvesting two-way relaying communication network (TWRN), where two transceivers exchange information with the help of a wireless-powered relay. By exploiting the TS architecture at the relay node, the relay node needs to use additional time slots for energy transmission, reducing the transmission rate. Thus, we propose a joint resource allocation algorithm to maximize the max-min bidirectional instantaneous information rate. To solve the original non-convex optimization problem, the objective function is decomposed into three sub-problems and solved sequentially. The closed-form solution of the transmit power of two sources and the optimal TS factor can be obtained by the information rate balancing technology and the proposed time allocation scheme, respectively. At last, the optimal relay node can be obtained. Simulation results show that the performance of the proposed algorithm is better than the traditional schemes and power-splitting (PS) scheme.https://www.mdpi.com/1999-5903/11/2/47energy harvestingtwo-way relaying networkmax-min bidirectional information ratepower allocationrelay selection |
| spellingShingle | Xin Song Siyang Xu Zhigang Xie Xiuwei Han Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network Future Internet energy harvesting two-way relaying network max-min bidirectional information rate power allocation relay selection |
| title | Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network |
| title_full | Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network |
| title_fullStr | Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network |
| title_full_unstemmed | Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network |
| title_short | Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network |
| title_sort | joint optimal power allocation and relay selection scheme in energy harvesting two way relaying network |
| topic | energy harvesting two-way relaying network max-min bidirectional information rate power allocation relay selection |
| url | https://www.mdpi.com/1999-5903/11/2/47 |
| work_keys_str_mv | AT xinsong jointoptimalpowerallocationandrelayselectionschemeinenergyharvestingtwowayrelayingnetwork AT siyangxu jointoptimalpowerallocationandrelayselectionschemeinenergyharvestingtwowayrelayingnetwork AT zhigangxie jointoptimalpowerallocationandrelayselectionschemeinenergyharvestingtwowayrelayingnetwork AT xiuweihan jointoptimalpowerallocationandrelayselectionschemeinenergyharvestingtwowayrelayingnetwork |