Performance Analysis and Optimization of Energy Harvesting Modulation for Multi-User Integrated Data and Energy Transfer

Integrated data and energy transfer(IDET)enables the electromagnetic waves to transmit wireless energy at the same time of data delivery for lowpower devices.In this paper,an energy harvesting modulation(EHM)assisted multi-user IDET system is studied,where all the received signals at the users are exploited for energy harvesting without the degradation of wireless data transfer(WDT)performance.The joint IDET performance is then analysed theoretically by conceiving a practical time-dependent wireless channel.With the aid of the AO based algorithm,the average effective data rate among users are maximized by ensuring the BER and the wireless energy transfer(WET)performance.Simulation results validate and evaluate the IDET performance of the EHM assisted system,which also demonstrates that the optimal number of user clusters and IDET time slots should be allocated,in order to improve the WET and WDT performance.

NOMA Empowered Energy Efficient Data Collection and Wireless Power Transfer in Space-Air-Ground Integrated Networks

As the sixth generation network(6G)emerges,the Internet of remote things(IoRT)has become a critical issue.However,conventional terrestrial networks cannot meet the delay-sensitive data collection needs of IoRT networks,and the Space-Air-Ground integrated network(SAGIN)holds promise.We propose a novel setup that integrates non-orthogonal multiple access(NOMA)and wireless power transfer(WPT)to collect latency-sensitive data from IoRT networks.To extend the lifetime of devices,we aim to minimize the maximum energy consumption among all IoRT devices.Due to the coupling between variables,the resulting problem is non-convex.We first decouple the variables and split the original problem into four subproblems.Then,we propose an iterative algorithm to solve the corresponding subproblems based on successive convex approximation(SCA)techniques and slack variables.Finally,simulation results show that the NOMA strategy has a tremendous advantage over the OMA scheme in terms of network lifetime and energy efficiency,providing valuable insights.

Multi-Sinusoidal Waveform Shaping for Integrated Data and Energy Transfer in Aging Channels

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.

利用MCU实现嵌入式应用系统间的短距离无线通信

提出了一种利用MotorolaMC68HC908JL8MCU实现嵌入式应用系统之间的短距离无线通信的实现方法。以计算机之间的无线文件传输为例阐述短距离无线通信的系统结构、硬件设计及实现方法、软件编程框架。对无线收发核心模块的编程进行了较详细的分析。

Power Splitting Based SWIPT in Network-Coded Two-Way Networks with Data Rate Fairness:An Information-Theoretic Perspective

This paper investigates the simultaneous wireless information and powertransfer(SWIPT) for network-coded two-way relay network from an information-theoretic perspective, where two sources exchange information via an SWIPT-aware energy harvesting(EH) relay. We present a power splitting(PS)-based two-way relaying(PS-TWR) protocol by employing the PS receiver architecture. To explore the system sum rate limit with data rate fairness, an optimization problem under total power constraint is formulated. Then, some explicit solutions are derived for the problem. Numerical results show that due to the path loss effect on energy transfer, with the same total available power, PS-TWR losses some system performance compared with traditional non-EH two-way relaying, where at relatively low and relatively high signalto-noise ratio(SNR), the performance loss is relatively small. Another observation is that, in relatively high SNR regime, PS-TWR outperforms time switching-based two-way relaying(TS-TWR) while in relatively low SNR regime TS-TWR outperforms PS-TWR. It is also shown that with individual available power at the two sources, PS-TWR outperforms TS-TWR in both relatively low and high SNR regimes.

Create Your Own Data and Energy Integrated Communication Network:A Brief Tutorial and a Prototype System

In order to satisfy the ever-increasing energy appetite of the massive battery-powered and batteryless communication devices,radio frequency(RF)signals have been relied upon for transferring wireless power to them.The joint coordination of wireless power transfer(WPT)and wireless information transfer(WIT)yields simultaneous wireless information and power transfer(SWIPT)as well as data and energy integrated communication network(DEIN).However,as a promising technique,few efforts are invested in the hardware implementation of DEIN.In order to make DEIN a reality,this paper focuses on hardware implementation of a DEIN.It firstly provides a brief tutorial on SWIPT,while summarising the latest hardware design of WPT transceiver and the existing commercial solutions.Then,a prototype design in DEIN with full protocol stack is elaborated,followed by its performance evaluation.

Design and Implementation of a Battery Big Data Platform Through Intelligent Connected Electric Vehicles

The development of a battery management algorithm is highly dependent on high-quality battery operation data,especially the data in extreme conditions such as low temperatures.The data in faults are also essential for failure and safety management research.This study developed a battery big data platform to realize vehicle operation,energy interaction and data management.First,we developed an electric vehicle with vehicle navigation and position detection and designed an environmental cabin that allows the vehicle to operate autonomously.Second,charging and heating systems based on wireless energy transfer were developed and equipped on the vehicle to investigate optimal charging and heating methods of the batteries in the vehicle.Third,the data transmission network was designed,a real-time monitoring interface was developed,and the self-developed battery management system was used to measure,collect,upload,and store battery operation data in real time.Finally,experimental validation was performed on the platform.Results demonstrate the efficiency and reliability of the platform.Battery state of charge estimation is used as an example to illustrate the availability of battery operation data.

UAV-Aided Data and Energy Integrated Network: System Design and Prototype Development

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.

智能封锁雷定位问题研究

文中主要介绍了一种构建智能封锁雷定位系统的新方法。该方法采用声学和无线传输相结合的方式测量雷体间距离,由所测距离关系经封锁雷内部处理器进行几何运算来确定各雷体间相对位置关系,加入地磁线作为参考来确定雷体的运动方向。考虑到温度对声波在大气中速度的影响和硬件电路处理信号的延迟,加入了温度补偿修正及硬件电路延迟修正,有效提高了测距的精度;经现场反复验证,该方法确实可行。

基于GPRS的无线数据传输系统及其应用探讨

GPRS技术(通用分组无线业务),凭借其"实时在线"、"按量计费"、"快捷登录"、"高速传愉"等优点,已经能够实现点对点、中心对多点以及多点之间实时、对等的数据传愉。基于GPRS的无线数据传输系统具有费用低廉,传输稳定,且传输距离可达到GSM网络能达到的区域等特点,可以广泛应用于工业监控、远程遥测等系统中。本文从GPRS的构成入手,详细介绍了该无线数据传输系统的原理和硬件电路设计,并探讨了该系统可应用的众多领域。

基于GPRS的远程监控系统的研究与实现

设计了一种以单片机Atmega128A为控制核心,结合GPRS/GSM无线传输模块MC37I开发的无线数据终端,配合服务器及客户端软件构建了一种基于GPRS的远程监控方案。借助于无线数据终端和Internet,客户端能够对现场设备进行远程监视和控制。阐述了系统的总体方案,从硬件和软件两个方面具体介绍了无线数据终端的实现方法。

无线传感器网络中移动协助的数据收集策略

利用移动数据收集器(mobile data collector,简称MDC)进行传感器网络中感知数据的收集,可以有效地减少传感器将数据发送到静止基站的传输跳数,节约网络的能量,延长网络寿命.此外,MDC通过循环收集传感器数据或承担数据转发的功能,避免节点间由于多跳传输引起的能量空洞(energy hole)以及节点失效造成的传输链路中断等问题.MDC的移动性也为无线传感器网络的研究带来新的挑战.研究基于移动协助数据收集的无线传感器网络结构,分类总结了近年来提出的一些典型的基于MDC的算法和协议,着重讨论了MDC在网络能量、延迟、路由和传输等方面带来的性能变化.最后,进行了各种算法的比较性总结,针对传感器网络中MDC的研究提出了亟待解决的问题,并展望了其未来的发展方向.

基于CC1100的无线数据传输系统设计

无线通信技术不断进步,低功耗、体积小的无线数据传输系统成为无线通信技术的一个重要发展方向,随之而来的是无线射频芯片的不断推陈出新。需要用单片机或其他时序逻辑器件对无线射频芯片进行控制,以实现无线数据的传输。本文介绍了一种以PIC16F877单片机为控制核心,基于无线收发芯片CC1100的通信模块系统。对其工作原理和工作方式进行了分析,给出了设计思路和硬件电路,并重点阐述了通信模块的接口实现过程。

无线高速数据传输技术的研究

近年来,无线通信技术获得了飞速发展,应用范围也越来越广泛;随着射频和微波器件日新月异的发展,以微处理器为核心的便携式设备已经不仅仅满足于日常的计算和事件的处理功能,更多的时候,这些设备需要和其他的设备进行通信,进行数据的传输与交换;因此文章介绍了常用的几种便携式无线传输方式,并详细描述了一种基于无线数传模块nRF24L01的无线数据传输系统的总体方案设计。

基于ZigBee的工业无线数据采集器设计

设计了一种基于ZigBee无线网络的数据采集器。该采集器利用AVR单片机与ZigBee模块通信,可以在较短的距离范围内完成数据的可靠采集与发送,可有效解决工业现场的数据采集问题。

分布式多点位无线测温系统及其应用

根据大规模多点位远距离温度监控的要求 ,设计了一种适合于施工信息智能监控的测温系统 。

无线RF技术在农业环境温湿度数据采集系统中的应用

介绍了农业环境温湿度远程自动检测系统,利用集成的温湿度传感器SHT11和无线RF数据传输模块nRF2401实现温湿度数据的无线传输与接收,利用终端的PC机监测显示温湿度。阐述了系统的总体结构,并从硬件和软件两方面说明了系统的设计及实现方法。实践表明,该系统使用方便,数据传输可靠,数据可视化直观。

养蜂箱内温湿度远程监测系统研究

介绍了蜜蜂养殖场的多个养蜂箱内温湿度远程自动监测系统,利用集成的温、湿度传感器和无线数据传输模块PTR8000+实现多点温湿度数据的无线传输与接收,利用终端的PC机监测各养蜂箱的温、湿度;阐述了系统的总体结构,并从硬件和软件两2面说明了系统的设计及实现方法。结果表明,系统使用方便,数据传输可靠,数据可视化直观。

基于C8051F单片机抽油机数据采集模块的研究与实现

研究了一种基于C8051F单片机抽油机数据采集模块的设计与实现。论述了系统结构、工作原理,着重阐述了硬件电路、软件流程与实现方法。该数据采集模块运用多维参数检测,结合高性能单片机,辅以无线通讯和人机互动模块,通过远程终端和现场设备皆可获取参数信息,与传统方法相比系统响应更快速,对抽油机故障判断更准确。在抽油机在线故障监控系统中得到应用。实验结果表明,该方法可靠性高、成本低廉、使用方便。

基于无线数字传输的节水灌溉数据采集系统研究

采用灌溉数据实时采集实现节水灌溉自动控制是当今的发展方向之一。该系统介绍的为节水灌溉自动化系统中的无线数据采集子系统,利用nRF903收/发芯片实现数据的无线传输。该系统由采集和接收两部分组成:采集端将传感器的输出信号进行模数转换,利用无线数字传输技术将数据发送到接收端,在接收端对数据进行存储和显示。阐述了系统的总体结构,并从硬件和软件两方面描述了系统的设计及实现方法。实践证明,该系统使用灵活,数据传输可靠,适合不便连线的一般测试场合应用。