Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links
Forming cooperation through relay's assistance is a promising method to realize green communication by reducing transmission power. In this paper, for multiuser single-DF-relay wireless networks with direct links, the optimal power allocation strategy that minimizes system-sum-power consumption...
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| Format: | Article |
| Language: | English |
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Wiley
2016-04-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2016/8467294 |
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| _version_ | 1849434936040226816 |
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| author | Shiguo Wang Haixia Peng Xianru Liu |
| author_facet | Shiguo Wang Haixia Peng Xianru Liu |
| author_sort | Shiguo Wang |
| collection | DOAJ |
| description | Forming cooperation through relay's assistance is a promising method to realize green communication by reducing transmission power. In this paper, for multiuser single-DF-relay wireless networks with direct links, the optimal power allocation strategy that minimizes system-sum-power consumption is investigated. Based on the principle that minimizing system-sum-power consumption is equivalent to maximizing system energy efficiency, users are classified into two parts after comparing the channel gains between source-destination link and relay-destination link. The optimal power allocation strategy of one part is determined directly, and minimizing the system-sum-power consumption of the other part is converted into minimizing source-sum-power consumption, which can be solved easily through Karush-Kuhn-Tucker (KKT) condition. Through numerical simulations, we further justified the effectiveness of our scheme compared to existing works. |
| format | Article |
| id | doaj-art-566b92d02e4c4f548fcc04fde6c5005d |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2016-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-566b92d02e4c4f548fcc04fde6c5005d2025-08-20T03:26:29ZengWileyInternational Journal of Distributed Sensor Networks1550-14772016-04-011210.1155/2016/8467294Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct LinksShiguo Wang0Haixia Peng1Xianru Liu2 The Key Laboratory of Intelligent Computing and Information Processing, Ministry of Education, Xiangtan University, Xiangtan 411105, China The Key Laboratory of Intelligent Computing and Information Processing, Ministry of Education, Xiangtan University, Xiangtan 411105, China School of Information Science and Engineering, Central South University, Changsha 410086, ChinaForming cooperation through relay's assistance is a promising method to realize green communication by reducing transmission power. In this paper, for multiuser single-DF-relay wireless networks with direct links, the optimal power allocation strategy that minimizes system-sum-power consumption is investigated. Based on the principle that minimizing system-sum-power consumption is equivalent to maximizing system energy efficiency, users are classified into two parts after comparing the channel gains between source-destination link and relay-destination link. The optimal power allocation strategy of one part is determined directly, and minimizing the system-sum-power consumption of the other part is converted into minimizing source-sum-power consumption, which can be solved easily through Karush-Kuhn-Tucker (KKT) condition. Through numerical simulations, we further justified the effectiveness of our scheme compared to existing works.https://doi.org/10.1155/2016/8467294 |
| spellingShingle | Shiguo Wang Haixia Peng Xianru Liu Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links International Journal of Distributed Sensor Networks |
| title | Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links |
| title_full | Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links |
| title_fullStr | Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links |
| title_full_unstemmed | Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links |
| title_short | Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links |
| title_sort | sum power minimization in multiuser single df relay networks with direct links |
| url | https://doi.org/10.1155/2016/8467294 |
| work_keys_str_mv | AT shiguowang sumpowerminimizationinmultiusersingledfrelaynetworkswithdirectlinks AT haixiapeng sumpowerminimizationinmultiusersingledfrelaynetworkswithdirectlinks AT xianruliu sumpowerminimizationinmultiusersingledfrelaynetworkswithdirectlinks |