Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer
We consider the simultaneous wireless information and power transfer in two-phase decode-and-forward two-way relaying networks, where a relay harvests the energy from the signal to be relayed through either power splitting or time splitting. Here, we formulate the resource allocation problems optimi...
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| Format: | Article |
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MDPI AG
2017-11-01
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| Series: | Information |
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| Online Access: | https://www.mdpi.com/2078-2489/8/4/141 |
| _version_ | 1819264519288913920 |
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| author | Thinh Phu Do Yeonjin Jeong Yun Hee Kim |
| author_facet | Thinh Phu Do Yeonjin Jeong Yun Hee Kim |
| author_sort | Thinh Phu Do |
| collection | DOAJ |
| description | We consider the simultaneous wireless information and power transfer in two-phase decode-and-forward two-way relaying networks, where a relay harvests the energy from the signal to be relayed through either power splitting or time splitting. Here, we formulate the resource allocation problems optimizing the time-phase and signal splitting ratios to maximize the sum rate of the two communicating devices. The joint optimization problems are shown to be convex for both the power splitting and time splitting approaches after some transformation if required to be solvable with an existing solver. To lower the computational complexity, we also present the suboptimal methods optimizing the splitting ratio for the fixed time-phase and derive a closed-form solution for the suboptimal method based on the power splitting. The results demonstrate that the power splitting approaches outperform their time splitting counterparts and the suboptimal power splitting approach provides a performance close to the optimal one while reducing the complexity significantly. |
| first_indexed | 2024-12-23T20:30:46Z |
| format | Article |
| id | doaj.art-d5a789fb60b64fddac2c20abe494b12b |
| institution | Directory Open Access Journal |
| issn | 2078-2489 |
| language | English |
| last_indexed | 2024-12-23T20:30:46Z |
| publishDate | 2017-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Information |
| spelling | doaj.art-d5a789fb60b64fddac2c20abe494b12b2022-12-21T17:32:15ZengMDPI AGInformation2078-24892017-11-018414110.3390/info8040141info8040141Rate Optimization of Two-Way Relaying with Wireless Information and Power TransferThinh Phu Do0Yeonjin Jeong1Yun Hee Kim2Department of Electronic Engineering, Kyung Hee University, Yongin, Gyeonggi-do 17104, KoreaDepartment of Electronic Engineering, Kyung Hee University, Yongin, Gyeonggi-do 17104, KoreaDepartment of Electronic Engineering, Kyung Hee University, Yongin, Gyeonggi-do 17104, KoreaWe consider the simultaneous wireless information and power transfer in two-phase decode-and-forward two-way relaying networks, where a relay harvests the energy from the signal to be relayed through either power splitting or time splitting. Here, we formulate the resource allocation problems optimizing the time-phase and signal splitting ratios to maximize the sum rate of the two communicating devices. The joint optimization problems are shown to be convex for both the power splitting and time splitting approaches after some transformation if required to be solvable with an existing solver. To lower the computational complexity, we also present the suboptimal methods optimizing the splitting ratio for the fixed time-phase and derive a closed-form solution for the suboptimal method based on the power splitting. The results demonstrate that the power splitting approaches outperform their time splitting counterparts and the suboptimal power splitting approach provides a performance close to the optimal one while reducing the complexity significantly.https://www.mdpi.com/2078-2489/8/4/141decode-and-forwardresource allocationsimultaneous wireless information and power transfertwo-way relaying |
| spellingShingle | Thinh Phu Do Yeonjin Jeong Yun Hee Kim Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer Information decode-and-forward resource allocation simultaneous wireless information and power transfer two-way relaying |
| title | Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer |
| title_full | Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer |
| title_fullStr | Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer |
| title_full_unstemmed | Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer |
| title_short | Rate Optimization of Two-Way Relaying with Wireless Information and Power Transfer |
| title_sort | rate optimization of two way relaying with wireless information and power transfer |
| topic | decode-and-forward resource allocation simultaneous wireless information and power transfer two-way relaying |
| url | https://www.mdpi.com/2078-2489/8/4/141 |
| work_keys_str_mv | AT thinhphudo rateoptimizationoftwowayrelayingwithwirelessinformationandpowertransfer AT yeonjinjeong rateoptimizationoftwowayrelayingwithwirelessinformationandpowertransfer AT yunheekim rateoptimizationoftwowayrelayingwithwirelessinformationandpowertransfer |