This paper investigates underlay device-to-device (D2D) communication in a simultaneous wireless information and power transfer (SWIPT)-enabled two-hop decode-and-forward cellular relay network. The D2D transmitter transmits both information and cancelable energy signals, with the energy signal contributing to energy harvesting at the cellular relay while being canceled before information decoding. The signal powers and relay power splitting ratio are jointly optimized to maximize the D2D rate while preserving the end-to-end cellular rate achieved in the absence of D2D transmission. The resulting nonconvex problem is reformulated as an equivalent tractable problem, and its globally optimal solution is derived in closed form. Analytical results demonstrate that the proposed scheme performs at least as well as the baseline and achieves a positive D2D rate even when the baseline cannot support D2D transmission. We also derive a finite asymptotic upper bound on the D2D rate. Numerical results validate the theoretical analysis and demonstrate substantial performance gains over the baseline scheme.
A Dinkelbach-based alternating optimization framework integrating utility-based relay selection and graph-based multi-hop routing is developed and improves energy efficiency by approximately 20–40% compared with the considered benchmark schemes.
Suhare Solaiman· Journal of King Saud Univers...· 0 citations
A robust multi-cell resource allocation (RMRA) framework for UE-RIS-assisted D2D relay networks under imperfect CSI is proposed, comprising distance-pruned Hungarian assignment, robust power control using Bernstein-type inequality and S-procedure based semidefinite programming, and soft actor-critic based passive beamf...
Kayode Popoola, A. Ajani, S. Nicholson et al.· International Journal of Ele...· 0 citations
Satellite-terrestrial integrated networks with simultaneous wireless information and power transfer (SWIPT) provide wide-area connectivity and sustainable service support, but they also face serious security challenges due to the broadcast nature of satellite links and the possibility that an energy receiver may act as...
Meng-Yan Huang, Xing-Wang Li, Chengjun Jiang et al.· IEEE Journal on Selected Are...· 0 citations
This paper proposes a robust beamforming framework for a full-duplex (FD) integrated secure communication, computation, and energy (ISC2E) network. In the considered network, an FD base station (BS) simultaneously performs downlink wireless power transfer while aggregating uplink over-the-air computation data and recei...
Chang-Jie Hu, Jiashuo Sun, Tuo Wu et al.· IEEE Transactions on Wireles...· 0 citations
Engineering breakthroughs in self-interference cancellation have advanced full-duplex (FD) networking from theoretical research to practical deployment, alleviating the spectrum supply-demand imbalance. However, the co-time co-frequency transmission for the uplink and downlink intensifies inter-user cross-link interfer...
Changqing Song, Dian Xiao, Yan Zhao et al.· IEEE Transactions on Green C...· 0 citations
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