Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks
In this paper, we consider a wireless powered communication network (WPCN) consisting of a multi-antenna hybrid access point (HAP) that transfers wireless energy to and receives sensing data from a cluster of low-power wireless devices (WDs). To enhance the throughput performance of some faraway WDs...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2017-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/7979526/ |
| _version_ | 1818927434753376256 |
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| author | Lina Yuan Suzhi Bi Shengli Zhang Xiaohui LIN Hui Wang |
| author_facet | Lina Yuan Suzhi Bi Shengli Zhang Xiaohui LIN Hui Wang |
| author_sort | Lina Yuan |
| collection | DOAJ |
| description | In this paper, we consider a wireless powered communication network (WPCN) consisting of a multi-antenna hybrid access point (HAP) that transfers wireless energy to and receives sensing data from a cluster of low-power wireless devices (WDs). To enhance the throughput performance of some faraway WDs, we allow one of the WDs to act as the cluster head (CH) that helps forward the messages of the other cluster members. However, the performance of the proposed cluster-based cooperation is fundamentally limited by the high energy consumption of the CH, who needs to transmit all the WDs' messages including its own. To tackle this issue, we exploit the capability of multi-antenna energy beamforming (EB) at the HAP, which can focus more transferred power to the CH to balance its energy consumption in assisting the other WDs. Specifically, we first derive the throughput performance of each individual WD under the proposed scheme. Then, we jointly optimize the EB design, the transmit time allocation among the HAP and the WDs, and the transmit power allocation of the CH to maximize the minimum data rate achievable among all the WDs (the max-min throughput) for improved throughput fairness among the WDs. An efficient optimal algorithm is proposed to solve the joint optimization problem. Moreover, we simulate under practical network setups and show that the proposed multi-antenna enabled cluster-based cooperation can effectively improve the throughput fairness of WPCN. |
| first_indexed | 2024-12-20T03:12:57Z |
| format | Article |
| id | doaj.art-1490fdb8f1cf4eaa95ee3e2a7aeaf042 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T03:12:57Z |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1490fdb8f1cf4eaa95ee3e2a7aeaf0422022-12-21T19:55:24ZengIEEEIEEE Access2169-35362017-01-015139411395010.1109/ACCESS.2017.27265597979526Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication NetworksLina Yuan0Suzhi Bi1https://orcid.org/0000-0001-6212-690XShengli Zhang2Xiaohui LIN3Hui Wang4College of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaIn this paper, we consider a wireless powered communication network (WPCN) consisting of a multi-antenna hybrid access point (HAP) that transfers wireless energy to and receives sensing data from a cluster of low-power wireless devices (WDs). To enhance the throughput performance of some faraway WDs, we allow one of the WDs to act as the cluster head (CH) that helps forward the messages of the other cluster members. However, the performance of the proposed cluster-based cooperation is fundamentally limited by the high energy consumption of the CH, who needs to transmit all the WDs' messages including its own. To tackle this issue, we exploit the capability of multi-antenna energy beamforming (EB) at the HAP, which can focus more transferred power to the CH to balance its energy consumption in assisting the other WDs. Specifically, we first derive the throughput performance of each individual WD under the proposed scheme. Then, we jointly optimize the EB design, the transmit time allocation among the HAP and the WDs, and the transmit power allocation of the CH to maximize the minimum data rate achievable among all the WDs (the max-min throughput) for improved throughput fairness among the WDs. An efficient optimal algorithm is proposed to solve the joint optimization problem. Moreover, we simulate under practical network setups and show that the proposed multi-antenna enabled cluster-based cooperation can effectively improve the throughput fairness of WPCN.https://ieeexplore.ieee.org/document/7979526/Wireless sensor networkswireless powered communicationresource allocationuser fairness |
| spellingShingle | Lina Yuan Suzhi Bi Shengli Zhang Xiaohui LIN Hui Wang Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks IEEE Access Wireless sensor networks wireless powered communication resource allocation user fairness |
| title | Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks |
| title_full | Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks |
| title_fullStr | Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks |
| title_full_unstemmed | Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks |
| title_short | Multi-Antenna Enabled Cluster-Based Cooperation in Wireless Powered Communication Networks |
| title_sort | multi antenna enabled cluster based cooperation in wireless powered communication networks |
| topic | Wireless sensor networks wireless powered communication resource allocation user fairness |
| url | https://ieeexplore.ieee.org/document/7979526/ |
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