Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation
In this paper, we propose a joint optimization scheme for a transmit power and power-splitting ratio in device-to-device (D2D)-enabled simultaneous wireless information and power transfer (SWIPT) cellular networks, considering energy signal transmission. This energy signal facilitates the energy coo...
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MDPI AG
2025-01-01
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| author | Dong-Woo Lim Jae-Mo Kang |
| author_facet | Dong-Woo Lim Jae-Mo Kang |
| author_sort | Dong-Woo Lim |
| collection | DOAJ |
| description | In this paper, we propose a joint optimization scheme for a transmit power and power-splitting ratio in device-to-device (D2D)-enabled simultaneous wireless information and power transfer (SWIPT) cellular networks, considering energy signal transmission. This energy signal facilitates the energy cooperation between the D2D transmitter (DT) and the CU. Under the proposed scheme, the D2D rate is maximized while guaranteeing that the cellular user (CU) achieves the same performance as in scenarios without D2D communications. In order to solve the formulated nonconvex problem, we leverage the monotonically increasing property of logarithmic functions to transform it into an equivalent convex problem. As a result, we obtain the optimal solution in closed form. Also, the optimal D2D performance is analyzed, and useful insights into the performance improvements achievable through the proposed scheme are obtained. Numerical results demonstrate that the proposed scheme significantly outperforms the baseline scheme. |
| format | Article |
| id | doaj-art-a1b6d38050f04ec4ac3dcc4e0f68d9f9 |
| institution | OA Journals |
| issn | 2227-7390 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Mathematics |
| spelling | doaj-art-a1b6d38050f04ec4ac3dcc4e0f68d9f92025-08-20T02:12:30ZengMDPI AGMathematics2227-73902025-01-0113338910.3390/math13030389Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy CooperationDong-Woo Lim0Jae-Mo Kang1Department of Information & Communication Engineering, Changwon National University, Changwon 51140, Republic of KoreaDepartment of Artificial Intelligence, Kyungpook National University, Daegu 41566, Republic of KoreaIn this paper, we propose a joint optimization scheme for a transmit power and power-splitting ratio in device-to-device (D2D)-enabled simultaneous wireless information and power transfer (SWIPT) cellular networks, considering energy signal transmission. This energy signal facilitates the energy cooperation between the D2D transmitter (DT) and the CU. Under the proposed scheme, the D2D rate is maximized while guaranteeing that the cellular user (CU) achieves the same performance as in scenarios without D2D communications. In order to solve the formulated nonconvex problem, we leverage the monotonically increasing property of logarithmic functions to transform it into an equivalent convex problem. As a result, we obtain the optimal solution in closed form. Also, the optimal D2D performance is analyzed, and useful insights into the performance improvements achievable through the proposed scheme are obtained. Numerical results demonstrate that the proposed scheme significantly outperforms the baseline scheme.https://www.mdpi.com/2227-7390/13/3/389device-to-device (D2D) communicationsimultaneous wireless information and power transfer (SWIPT)transmit power optimizationpower-splitting ratio optimization |
| spellingShingle | Dong-Woo Lim Jae-Mo Kang Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation Mathematics device-to-device (D2D) communication simultaneous wireless information and power transfer (SWIPT) transmit power optimization power-splitting ratio optimization |
| title | Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation |
| title_full | Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation |
| title_fullStr | Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation |
| title_full_unstemmed | Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation |
| title_short | Joint Transmit Power and Power-Splitting Optimization for SWIPT in D2D-Enabled Cellular Networks with Energy Cooperation |
| title_sort | joint transmit power and power splitting optimization for swipt in d2d enabled cellular networks with energy cooperation |
| topic | device-to-device (D2D) communication simultaneous wireless information and power transfer (SWIPT) transmit power optimization power-splitting ratio optimization |
| url | https://www.mdpi.com/2227-7390/13/3/389 |
| work_keys_str_mv | AT dongwoolim jointtransmitpowerandpowersplittingoptimizationforswiptind2denabledcellularnetworkswithenergycooperation AT jaemokang jointtransmitpowerandpowersplittingoptimizationforswiptind2denabledcellularnetworkswithenergycooperation |