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Wireless Information and Power Transfer in Underwater Acoustic Sensor Networks
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作者 Feng Yizhi Ji Fei 《China Communications》 SCIE CSCD 2024年第10期256-266,共11页
Wireless information and power transfer(WIPT) enables simultaneously communications and sustainable power supplement without the erection of power supply lines and the replacement operation of the batteries for the te... Wireless information and power transfer(WIPT) enables simultaneously communications and sustainable power supplement without the erection of power supply lines and the replacement operation of the batteries for the terminals. The application of WIPT to the underwater acoustic sensor networks(UWASNs) not only retains the long range communication capabilities, but also provides an auxiliary and convenient energy supplement way for the terminal sensors, and thus is a promising scheme to solve the energy-limited problem for the UWASNs. In this paper, we propose the integration of WIPT into the UWASNs and provide an overview on various enabling techniques for the WIPT based UWASNs(WIPT-UWASNs) as well as pointing out future research challenges and opportunities for WIPT-UWASNs. 展开更多
关键词 underwater acoustic modem underwater acoustic sensor network(UWASN) wireless information and power transfer(WIPT)
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Power Information System Database Cache Model Based on Deep Machine Learning
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作者 Manjiang Xing 《Intelligent Automation & Soft Computing》 SCIE 2023年第7期1081-1090,共10页
At present,the database cache model of power information system has problems such as slow running speed and low database hit rate.To this end,this paper proposes a database cache model for power information systems ba... At present,the database cache model of power information system has problems such as slow running speed and low database hit rate.To this end,this paper proposes a database cache model for power information systems based on deep machine learning.The caching model includes program caching,Structured Query Language(SQL)preprocessing,and core caching modules.Among them,the method to improve the efficiency of the statement is to adjust operations such as multi-table joins and replacement keywords in the SQL optimizer.Build predictive models using boosted regression trees in the core caching module.Generate a series of regression tree models using machine learning algorithms.Analyze the resource occupancy rate in the power information system to dynamically adjust the voting selection of the regression tree.At the same time,the voting threshold of the prediction model is dynamically adjusted.By analogy,the cache model is re-initialized.The experimental results show that the model has a good cache hit rate and cache efficiency,and can improve the data cache performance of the power information system.It has a high hit rate and short delay time,and always maintains a good hit rate even under different computer memory;at the same time,it only occupies less space and less CPU during actual operation,which is beneficial to power The information system operates efficiently and quickly. 展开更多
关键词 Deep machine learning power information system DATABASE cache model
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High-Power Simultaneous Wireless Information and Power Transfer: Injection-Locked Magnetron Technology 被引量:1
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作者 YANG Bo MITANI Tomohiko +1 位作者 SHINOHARA Naoki ZHANG Huaiqing 《ZTE Communications》 2022年第2期3-12,共10页
Applications using simultaneous wireless information and power transfer(SWIPT)have increased significantly.Wireless communication technologies can be combined with the Internet of Things to develop many innovative app... Applications using simultaneous wireless information and power transfer(SWIPT)have increased significantly.Wireless communication technologies can be combined with the Internet of Things to develop many innovative applications using SWIPT,which is mainly based on wireless energy harvesting from electromagnetic waves used in communications.Wireless power transfer that uses magnetrons has been developed for communication technologies.Injection-locked magnetrons that can be used to facilitate high-power SWIPT for several devices are reviewed in this paper.This new technology is expected to pave the way for promoting the application of SWIPT in a wide range of fields. 展开更多
关键词 simultaneous wireless information and power transfer wireless power transfer MAGNETRONS injection⁃locked Internet of Energy Internet of Things
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Simultaneous wireless information and power transfer with fixed and adaptive modulation
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作者 Jie Hu Guangming Liang +2 位作者 Qin Yu Kun Yang Xiaofeng Lu 《Digital Communications and Networks》 SCIE CSCD 2022年第3期303-313,共11页
Activating Wireless Power Transfer (WPT) in Radio-Frequency (RF) to provide on-demand energy supply to widely deployed Internet of Everything devices is a key to the next-generation energy self-sustainable 6G network.... Activating Wireless Power Transfer (WPT) in Radio-Frequency (RF) to provide on-demand energy supply to widely deployed Internet of Everything devices is a key to the next-generation energy self-sustainable 6G network. However, Simultaneous Wireless Information and Power Transfer (SWIPT) in the same RF bands is challenging. The majority of previous studies compared SWIPT performance to Gaussian signaling with an infinite alphabet, which is impossible to implement in any realistic communication system. In contrast, we study the SWIPT system in a well-known Nakagami-m wireless fading channel using practical modulation techniques with finite alphabet. The attainable rate-energy-reliability tradeoff and the corresponding rationale are revealed for fixed modulation schemes. Furthermore, an adaptive modulation-based transceiver is provided for further expanding the attainable rate-energy-reliability region based on various SWIPT performances of different modulation schemes. The modulation switching thresholds and transmit power allocation at the SWIPT transmitter and the power splitting ratios at the SWIPT receiver are jointly optimized to maximize the attainable spectrum efficiency of wireless information transfer while satisfying the WPT requirement and the instantaneous and average BER constraints. Numerical results demonstrate the SWIPT performance of various fixed modulation schemes in different fading conditions. The advantage of the adaptive modulation-based SWIPT transceiver is validated. 展开更多
关键词 Simultaneous wireless information and power transfer(SWIPT) Fixed/adaptive modulation Rate-energy-reliability trade-off Transceiver design Energy self-sustainability
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Programmable Metasurface for Simultaneously Wireless Information and Power Transfer System
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作者 CHANG Mingyang HAN Jiaqi +4 位作者 MA Xiangjin XUE Hao WU Xiaonan LI Long CUI Tiejun 《ZTE Communications》 2022年第2期48-62,共15页
Implementing self-sustainable wireless communication systems is urgent and challenging for 5G and 6G technologies.In this paper,we elaborate on a system solution using the programmable metasurface(PMS)for simultaneous... Implementing self-sustainable wireless communication systems is urgent and challenging for 5G and 6G technologies.In this paper,we elaborate on a system solution using the programmable metasurface(PMS)for simultaneous wireless information and power transfers(SWIPT),offering an optimized wireless energy management network.Both transmitting and receiving sides of the proposed solution are presented in detail.On the transmitting side,employing the wireless power transfer(WPT)technique,we present versatile power conveying strategies for near-field or far-field targets,single or multiple targets,and equal or unequal power targets.On the receiving side,utilizing the wireless energy harvesting(WEH)technique,we report our work on multi-functional rectifying metasurfaces that collect the wirelessly transmitted energy and the ambient energy.More importantly,a numerical model based on the plane-wave angular spectrum method is investigated to accurately calculate the radiation fields of PMS in the Fresnel and Fraunhofer regions.With this model,the efficiencies of WPT between the transmitter and the receiver are analyzed.Finally,future research directions are discussed,and integrated PMS for wireless information and wireless power is outlined. 展开更多
关键词 programmable metasurface simultaneously wireless information and power transfers wireless energy harvesting wireless power transfer
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Information on Power Projects Planned in China
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《Electricity》 2009年第3期53-54,共2页
关键词 PROJECT 2010 III HEAT information on power Projects Planned in China
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Information on Power Projects Planned in China
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《Electricity》 2009年第4期52-54,共3页
关键词 2010 HEAT PROJECT information on power Projects Planned in China
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Information on Power Projects Planned in China
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《Electricity》 2009年第1期52-54,共3页
关键词 PROJECT 2010 information on power Projects Planned in China
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Information on Power Projects Planned in China
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《Electricity》 2010年第1期51-53,共3页
关键词 2010 PROJECT information on power Projects Planned in China
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ImpIementation Detail on Power Dispatching Information Release (Tentative)
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《Electricity》 2001年第1期45-46,共2页
关键词 MODE ImpIementation Detail on power Dispatching information Release Tentative
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'Implementation Detail on Power Dispatching Information Release (Tentative)'issued
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《Electricity》 2001年第1期45-45,共1页
关键词 issued Implementation Detail on power Dispatching information Release
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Adaptive Energy-Efficient Power Allocation for DAS with Imperfect Channel State Information and Antenna Selection
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作者 Weiye Xu Min Lin +1 位作者 Yu Yang Xiangbin Yu 《China Communications》 SCIE CSCD 2016年第7期127-134,共8页
Considering that perfect channel state information(CSI) is difficult to obtain in practice,energy efficiency(EE) for distributed antenna systems(DAS) based on imperfect CSI and antennas selection is investigated in Ra... Considering that perfect channel state information(CSI) is difficult to obtain in practice,energy efficiency(EE) for distributed antenna systems(DAS) based on imperfect CSI and antennas selection is investigated in Rayleigh fading channel.A novel EE that is defined as the average transmission rate divided by the total consumed power is introduced.In accordance with this definition,an adaptive power allocation(PA) scheme for DAS is proposed to maximize the EE under the maximum transmit power constraint.The solution of PA in the constrained EE optimization does exist and is unique.A practical iterative algorithm with Newton method is presented to obtain the solution of PA.The proposed scheme includes the one under perfect CSI as a special case,and it only needs large scale and statistical information.As a result,the scheme has low overhead and good robustness.The theoretical EE is also derived for performance evaluation,and simulation result shows the validity of the theoretical analysis.Moreover,EE can be enhanced by decreasing the estimation error and/or path loss exponents. 展开更多
关键词 distributed antenna system energy efficiency adaptive power allocation imperfect channel state information antenna selection
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Build Information Intranet Foster Information Resources ─put forward in the Fifth Electric Power Computer Application and Information Working Conference
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《Electricity》 1997年第2期52-52,共1页
关键词 Intranet Build information Intranet Foster information Resources put forward in the Fifth Electric power Computer Application and information Working Conference
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Improving throughput in SWIPT-based wireless multirelay networks with relay selection and rateless codes
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作者 Gaofei Huang Qihong Zhong +2 位作者 Hui Zheng Sai Zhao Dong Tang 《Digital Communications and Networks》 SCIE CSCD 2024年第4期1131-1144,共14页
This paper studies a dual-hop Simultaneous Wireless Information and Power Transfer(SWIPT)-based multi-relay network with a direct link.To achieve high throughput in the network,a novel protocol is first developed,in w... This paper studies a dual-hop Simultaneous Wireless Information and Power Transfer(SWIPT)-based multi-relay network with a direct link.To achieve high throughput in the network,a novel protocol is first developed,in which the network can switch between a direct transmission mode and a Single-Relay-Selection-based Cooperative Transmission(SRS-CT)mode that employs dynamic decode-and-forward relaying accomplished with Rateless Codes(RCs).Then,under this protocol,an optimization problem is formulated to jointly optimize the network operation mode and the resource allocation in the SRS-CT mode.The formulated problem is difficult to solve because not only does the noncausal Channel State Information(CSI)cause the problem to be stochastic,but also the energy state evolution at each relay is complicated by network operation mode decision and resource allocation.Assuming that noncausal CSI is available,the stochastic optimization issue is first to be addressed by solving an involved deterministic optimization problem via dynamic programming,where the complicated energy state evolution issue is addressed by a layered optimization method.Then,based on a finite-state Markov channel model and assuming that CSI statistical properties are known,the stochastic optimization problem is solved by extending the result derived for the noncausal CSI case to the causal CSI case.Finally,a myopic strategy is proposed to achieve a tradeoff between complexity and performance without the knowledge of CSI statistical properties.The simulation results verify that our proposed SRS-and-RC-based design can achieve a maximum of approximately 40%throughput gain over a simple SRS-and-RC-based baseline scheme in SWIPT-based multi-relay networks. 展开更多
关键词 Simultaneous wireless information and power TRANSFER Energy harvesting Relay networks Throughput maximization
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PowerPoint动画信息化教学设计 被引量:1
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作者 石利平 《九江职业技术学院学报》 2017年第4期28-29,32,共3页
以学生为中心,以任务驱动为主线,引入线上线下混合教学模式,采用多种信息化教学手段:MOOC平台、微课、常见问题解答指导书、全真练习系统等,对PowerPoint动画进行信息化教学设计。
关键词 信息化 任务驱动 powerPoint动画
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Power Auditor数据库审计系统在宁夏电力的应用
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作者 张吉生 《电力信息与通信技术》 2016年第5期142-146,共5页
随着信息化建设的快速发展,数据库作为信息系统的核心和基础发挥着越来越重要的作用,数据库安全对信息系统的影响越来越大,数据的防篡改及防盗窃问题越来越引起人们的关注。文章根据电力信息化系统数据库审计的特点及实现方式,深入研究... 随着信息化建设的快速发展,数据库作为信息系统的核心和基础发挥着越来越重要的作用,数据库安全对信息系统的影响越来越大,数据的防篡改及防盗窃问题越来越引起人们的关注。文章根据电力信息化系统数据库审计的特点及实现方式,深入研究基于Power Auditor技术的数据库审计系统,介绍了Power Auditor数据库审计技术在宁夏电力信息系统中的应用,通过应用表明该技术能够有效地与电力信息化系统紧密融合,确保各业务系统数据库的安全可靠;最后,总结了宁夏电力信息系统数据库审计的运维特点。 展开更多
关键词 数据库 审计系统 power AUDITOR 信息化
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Multi-Sinusoidal Waveform Shaping for Integrated Data and Energy Transfer in Aging Channels 被引量:2
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作者 Jie Hu Yaping Hou Kun Yang 《China Communications》 SCIE CSCD 2023年第4期243-258,共16页
Integrated data and energy transfer(IDET)is capable of simultaneously delivering on-demand data and energy to low-power Internet of Everything(Io E)devices.We propose a multi-carrier IDET transceiver relying on superp... Integrated data and energy transfer(IDET)is capable of simultaneously delivering on-demand data and energy to low-power Internet of Everything(Io E)devices.We propose a multi-carrier IDET transceiver relying on superposition waveforms consisting of multi-sinusoidal signals for wireless energy transfer(WET)and orthogonal-frequency-divisionmultiplexing(OFDM)signals for wireless data transfer(WDT).The outdated channel state information(CSI)in aging channels is employed by the transmitter to shape IDET waveforms.With the constraints of transmission power and WDT requirement,the amplitudes and phases of the IDET waveform at the transmitter and the power splitter at the receiver are jointly optimised for maximising the average directcurrent(DC)among a limited number of transmission frames with the existence of carrier-frequencyoffset(CFO).For the amplitude optimisation,the original non-convex problem can be transformed into a reversed geometric programming problem,then it can be effectively solved with existing tools.As for the phase optimisation,the artificial bee colony(ABC)algorithm is invoked in order to deal with the nonconvexity.Iteration between the amplitude optimisation and phase optimisation yields our joint design.Numerical results demonstrate the advantage of our joint design for the IDET waveform shaping with the existence of the CFO and the outdated CSI. 展开更多
关键词 integrated data and energy transfer(IDET) wireless energy transfer(WET) simultaneous wireless information and power transfer(SWIPT) carrier-frequency-offset(CFO) WAVEFORM aging channels outdated channel state information(CSI) orthogonal frequency division multiplexing(OFDM)
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System Outage Probability and Diversity Analysis of a SWIPT Based Two-Way DF Relay Network Under Transceiver Hardware Impairments 被引量:1
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作者 Guangyue Lu Zhipeng Liu +1 位作者 Yinghui Ye Xiaoli Chu 《China Communications》 SCIE CSCD 2023年第10期120-135,共16页
This paper investigates the system outage performance of a simultaneous wireless information and power transfer(SWIPT)based two-way decodeand-forward(DF)relay network,where potential hardware impairments(HIs)in all tr... This paper investigates the system outage performance of a simultaneous wireless information and power transfer(SWIPT)based two-way decodeand-forward(DF)relay network,where potential hardware impairments(HIs)in all transceivers are considered.After harvesting energy and decoding messages simultaneously via a power splitting scheme,the energy-limited relay node forwards the decoded information to both terminals.Each terminal combines the signals from the direct and relaying links via selection combining.We derive the system outage probability under independent but non-identically distributed Nakagami-m fading channels.It reveals an overall system ceiling(OSC)effect,i.e.,the system falls in outage if the target rate exceeds an OSC threshold that is determined by the levels of HIs.Furthermore,we derive the diversity gain of the considered network.The result reveals that when the transmission rate is below the OSC threshold,the achieved diversity gain equals the sum of the shape parameter of the direct link and the smaller shape parameter of the terminalto-relay links;otherwise,the diversity gain is zero.This is different from the amplify-and-forward(AF)strategy,under which the relaying links have no contribution to the diversity gain.Simulation results validate the analytical results and reveal that compared with the AF strategy,the SWIPT based two-way relaying links under the DF strategy are more robust to HIs and achieve a lower system outage probability. 展开更多
关键词 decode-and-forward relay diversity gain hardware impairments simultaneous wireless information and power transfer system outage probability
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Simultaneous wireless information and power transfer transmitting architecture based on asynchronous space-time-coding digital metasurface[Invited] 被引量:1
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作者 祁振杰 戴俊彦 +8 位作者 王思然 周群焰 唐万恺 王凯岑 张澎 刘硕 李龙 程强 崔铁军 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第8期17-22,共6页
Simultaneous wireless information and power transfer(SWIPT)architecture is commonly applied in wireless sensors or Internet of Things(IoT)devices,providing both wireless power sources and communication channels.Howeve... Simultaneous wireless information and power transfer(SWIPT)architecture is commonly applied in wireless sensors or Internet of Things(IoT)devices,providing both wireless power sources and communication channels.However,the traditional SWIPT transmitter usually suffers from cross-talk distortion caused by the high peak-to-average power ratio of the input signal and the reduction of power amplifier efficiency.This paper proposes a SWIPT transmitting architecture based on an asynchronous space-time-coding digital metasurface(ASTCM).High-efficiency simultaneous transfer of information and power is achieved via energy distribution and information processing of the wireless monophonic signal reflected from the metasurface.We demonstrate the feasibility of the proposed method through theoretical derivations and experimental verification,which is therefore believed to have great potential in wireless communications and the IoT devices. 展开更多
关键词 simultaneous wireless information and power transfer asynchronous space-time-coding digital metasurface quadrature phase-shift keying modulation
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UAV-Aided Data and Energy Integrated Network: System Design and Prototype Development 被引量:1
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作者 Xinyu Fan Jie Hu Kun Yang 《China Communications》 SCIE CSCD 2023年第7期290-302,共13页
Terminal devices deployed in outdoor environments are facing a thorny problem of power supply.Data and energy integrated network(DEIN)is a promising technology to solve the problem,which simultaneously transfers data ... Terminal devices deployed in outdoor environments are facing a thorny problem of power supply.Data and energy integrated network(DEIN)is a promising technology to solve the problem,which simultaneously transfers data and energy through radio frequency signals.State-of-the-art researches mostly focus on theoretical aspects.By contrast,we provide a complete design and implementation of a fully functioning DEIN system with the support of an unmanned aerial vehicle(UAV).The UAV can be dispatched to areas of interest to remotely recharge batteryless terminals,while collecting essential information from them.Then,the UAV uploads the information to remote base stations.Our system verifies the feasibility of the DEIN in practical applications. 展开更多
关键词 data and energy integrated network(DEIN) internet of things(IoT) simultaneous wire-less information and power transfer(SWIPT) wireless energy transfer(WET) prototype
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