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[IEEE IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society - D.C., DC, USA (2018.10.21-2018.10.23)] IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society - Simultaneous Wireless Information and GaN-Based Power Transfer Exploiting a Dual Frequency Band
摘要： A simultaneous wireless information and power transfer system employing separated frequency bands for energy and data, dubbed dual-band SWIPT, is investigated. Elementary circuit elements are optimized numerically. An experimental testbed based on a gallium nitride (GaN) full-bridge converter demonstrates data rates in excess of 450 kbps employing on-off keying in conjunction with a simple diode detector for data recovery.
关键词： Inductive power transmission,SWIPT,Data communication,Inductive charging,Frequency division multiplexing
更新于2025-09-23 15:22:29
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Wireless Information and Power Transfer (Theory and Practice) || Wireless Power Transfer
摘要： Large-scale wireless networks are characterized by the existence of multi-user interference due to the concurrent transmission of the network’s terminals. In conventional networks, i.e. networks where the main focus is information transfer, interference is a critical degrading factor of a terminal’s performance. On the other hand, in networks where the main focus is wireless power transfer (WPT), interference is beneficial as it increases the harvesting efficiency. However, in both cases all wireless links are influenced by path-loss effects due to the distances between the terminals. As such, the terminals’ deployment is another important element which affects their performance. Therefore, a reasonable approach is to study radio frequency (RF) energy harvesting in large-scale networks by taking into account spatial randomness. The modeling of the geometrical characteristics of large-scale networks can be achieved with the employment of stochastic geometry, a suitable mathematical tool for studying spatial point processes [1]. Specifically, this chapter presents three sections, each dealing with a different wireless-powered communication scenario: Section 15.1 focuses on a wireless-powered cooperative network where the relays harvest energy from the source in order to convey its transmitted information; Section 15.2 deals with a simultaneous wireless information and power transfer (SWIPT) scenario, where terminals employ successive interference cancellation (SIC) techniques to boost the harvesting efficiency; Section 15.3 studies a wireless-powered communication network (WPCN) implementing a wireless-powered opportunistic beamforming (OBF) protocol. In each section closed-form mathematical expressions are provided for the considered performance metric of each scenario as well as numerical results with useful insights regarding the network’s performance.
关键词： stochastic geometry,SWIPT,opportunistic beamforming,wireless power transfer,cooperative networks
更新于2025-09-23 15:22:29
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[IEEE 2020 IEEE 17th Annual Consumer Communications & Networking Conference (CCNC) - Las Vegas, NV, USA (2020.1.10-2020.1.13)] 2020 IEEE 17th Annual Consumer Communications & Networking Conference (CCNC) - On Performance of Underwater Wireless Optical Communications Under Turbulence
摘要： This paper considers a full-duplex (FD) point-to-point system consisting of one multi-antenna FD access point (FD-AP) and one two-antenna FD mobile station (FD-MS). We adopt simultaneous wireless information and power transfer scheme and apply the self-energy recycling at FD-MS. In order to minimize the weighted sum transmit power, we jointly design the transmit beamforming vector of FD-AP, the receive power splitting ratio of FD-MS, and the transmit power value of FD-MS. Since the original problem is non-convex, we apply semidefinite relaxation and obtain a new convex problem. We further prove that both problems have exactly the same solutions. Finally, simulations are provided to verify our analysis, and the comparison with a half-duplex system demonstrates the significant performance gain from self-energy recycling.
关键词： SWIPT,SDR,Full-duplex,optimality,self-energy recycling
更新于2025-09-23 15:21:01
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Resource and Power Allocation in SWIPT Enabled Device-to-Device Communications Based on a Non-Linear Energy Harvesting Model
摘要： Due to the limited battery capacity in mobile devices, simultaneous wireless information and power transfer (SWIPT) has been proposed as a promising solution to improving the energy efficiency (EE) in Internet of things (IoT) networks, i.e., device-to-device (D2D) networks, by allowing mobile devices to harvest energy from ambient radio frequency (RF) signals. However, the non-linear behavior of RF energy harvesters has largely been ignored in existing works on SWIPT. In this paper, we propose to maximize the sum EE of all D2D links in a D2D underlaid cellular network by optimizing the resource and power allocation based on a non-linear energy harvesting (EH) model. Toward this end, we first propose a pre-matching algorithm to divide the D2D links into a SWIPT enabled group and a non-EH group that cannot meet the EH circuit sensitivity. We then develop a two-layer iterative algorithm to jointly optimize the D2D transmission power and the power splitting ratio to maximize the EE for each SWIPT enabled D2D link. On this basis, we build the preference lists for both SWIPT enabled D2D links and cellular user equipment (CUEs), and propose a one-to-one constraint stable matching algorithm to maximize the sum EE of all SWIPT enabled D2D links by optimizing the spectrum resource sharing between D2D links and CUEs. The sum EE of non-EH D2D links is maximized through an iterative power control algorithm and a one-to-one stable matching algorithm. Simulation results show that our proposed algorithms achieve a much higher sum EE than the existing matching based energy-efficient resource allocation scheme for SWIPT enabled D2D networks.
关键词： Device-to-device,underlay,energy harvesting,power control,resource allocation,SWIPT,energy efficiency,matching theory
更新于2025-09-23 15:21:01
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SWIPT Schemes for Carrier Index Differential Chaos Shift Keying Modulation: A New Look at the Inactive Carriers
摘要： In this paper, two carrier index differential chaos shift keying with simultaneous wireless information and power transfer (CI-DCSK SWIPT) schemes, which integrate carrier index differential chaos shift keying (CI-DCSK) modulation with wireless power transfer, are proposed. In the proposed schemes, based on the transmission characteristics of index modulation (IM), the inactive carriers of CI-DCSK are exploited to delivery energy by transmitting random noise-like signals subjected to normal distribution. By applying time switching (TS) at the receiver, each frame time of the proposed schemes is divided into two intervals. Unlike usual TS-based systems, two intervals of the proposed schemes are related, where energy harvesting and decoding of the modulated bits are both operated in the second interval. Analytical bit error rate (BER) expressions over additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels of the two schemes are derived. The expression for the parameter ξ is also derived, which measures the probability of self-suf?ciency of these schemes. The impact of the dividing point of two intervals on BER performance of systems is also analysed and optimized. Since the energy on the inactive carriers is adjustable, the schemes are always self-sustainable in energy supply. To provide the best performance, the ratio of energy on the inactive carriers to that on the active carriers is optimized. Simulation results show that though performances of the proposed schemes are a little worse than CI-DCSK with the same spectral ef?ciency (SE), the proposed schemes are all self-sustainable.
关键词： SWIPT,DCSK,energy ef?ciency,Index modulation,detection,spectrum ef?ciency,self-sustainable
更新于2025-09-19 17:15:36
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[IEEE 2019 Compound Semiconductor Week (CSW) - Nara, Japan (2019.5.19-2019.5.23)] 2019 Compound Semiconductor Week (CSW) - Organic Light-Emitting Diode Composed of an Oligomer Crystal Emission Layer
摘要： This paper considers a full-duplex (FD) point-to-point system consisting of one multi-antenna FD access point (FD-AP) and one two-antenna FD mobile station (FD-MS). We adopt simultaneous wireless information and power transfer scheme and apply the self-energy recycling at FD-MS. In order to minimize the weighted sum transmit power, we jointly design the transmit beamforming vector of FD-AP, the receive power splitting ratio of FD-MS, and the transmit power value of FD-MS. Since the original problem is non-convex, we apply semidefinite relaxation and obtain a new convex problem. We further prove that both problems have exactly the same solutions. Finally, simulations are provided to verify our analysis, and the comparison with a half-duplex system demonstrates the significant performance gain from self-energy recycling.
关键词： Full-duplex,SDR,optimality,self-energy recycling,SWIPT
更新于2025-09-19 17:13:59
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Exploiting Impacts of Intercell Interference on SWIPT-Assisted Non-Orthogonal Multiple Access
摘要： In this paper, we examine the influence of intercell interference (ICI) on the system outage behavior with important derived results in the proposed model of simultaneous wireless information and power transfer (SWIPT) together with the nonorthogonal multiple access (NOMA) using the amplify-and-forward protocol. We derive the closed-form expression of coverage probability for two NOMA users as a function of the signal-to-interference-plus-noise ratio (SINR). To fully take into account the effect of ICI, we adopt more practical parameters to evaluate the optimal power splitting coefficient regarding energy harvesting system performance analysis. Furthermore, to consider a more practical scenario, based on the fact that the number of ICI sources can affect wireless powered relays, we investigate the average outage probability by considering impacts of the reasonable number of participating ICI.
关键词： NOMA,outage probability,SWIPT,energy harvesting,intercell interference
更新于2025-09-10 09:29:36