无线工程与技术(英文)最新文献_第3页

Localizing Jammer in an Indoor Environment by Estimating Signal Strength and Kalman Filter 基于信号强度估计和卡尔曼滤波的室内干扰机定位

无线工程与技术(英文) Pub Date : 2018-04-09 DOI: 10.4236/WET.2018.92003

Waleed Aldosari, M. Zohdy

引用次数: 5

Managing Energy Consumption of Wireless Sensors Networks in Multiple Greenhouses 多个温室中无线传感器网络的能耗管理

无线工程与技术(英文) Pub Date : 2018-04-09 DOI: 10.4236/WET.2018.92002

Haythem Alhumud, M. Zohdy

引用次数: 6

Wireless Power Transmission with Short and Long Range Using Inductive Coil 利用电感线圈实现短距离和长距离无线电力传输

无线工程与技术(英文) Pub Date : 2018-01-25 DOI: 10.4236/WET.2018.91001

Manish Bhardwaj, A. Ahlawat

{"title":"Wireless Power Transmission with Short and Long Range Using Inductive Coil","authors":"Manish Bhardwaj, A. Ahlawat","doi":"10.4236/WET.2018.91001","DOIUrl":"https://doi.org/10.4236/WET.2018.91001","url":null,"abstract":"In today’s time each individual needs remote framework, yet at the same time control transmission for low power gadgets are wired in nature. Consistent power supply is one of the real issues in the motivation behind the utilization of remote sensor network. Yet, in the power arrangement of remote Sensor Network, the battery has an extremely constrained lifetime and is not supplanted yet by some other persistent power framework. There are separate techniques proposed for shorter and more separate power transmission: Inductive coupling, resonant inductive coupling and air ionization for short separations; microwave and Laser transmission for longer separations. The pioneer of the field, Tesla endeavoured to make a capable, remote electric transmitter more than a century back that has now observed an exponential development. This paper overall lights up all the effective strategies proposed for transmitting power without wires. This study is important for find out the future ways of power transmission. These methods are so important in today’s world because of drastic wastage of power. Common wireless power transmission is a point-to-point control transmission. It was demonstrated that the power transmission effectiveness could approach near 100%.","PeriodicalId":68067,"journal":{"name":"无线工程与技术(英文)","volume":"09 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2018-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45818109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

FBMC vs OFDM Waveform Contenders for 5G Wireless Communication System 5G无线通信系统的FBMC与OFDM波形竞争者

无线工程与技术(英文) Pub Date : 2017-10-23 DOI: 10.4236/WET.2017.84005

P. Kansal, A. K. Shankhwar

引用次数: 28

Design of a Li-Fi Transceiver 一种Li-Fi收发器的设计

无线工程与技术(英文) Pub Date : 2017-10-23 DOI: 10.4236/WET.2017.84006

Pavas Goswami, M. Shukla

{"title":"Design of a Li-Fi Transceiver","authors":"Pavas Goswami, M. Shukla","doi":"10.4236/WET.2017.84006","DOIUrl":"https://doi.org/10.4236/WET.2017.84006","url":null,"abstract":"The latest uproar in this era is about a technology termed as Light Fidelity or more commonly known as Li-Fi. There are currently two trends being seen: First, the extension or enrichment of wireless services and other being increased in user demand for these services, but the available RF spectrum for usage is very limited. So the new technology of Li-Fi came into picture, which uses visible light as a source of communication. Li-Fi is the most recent development which is resourceful. In this technology, LEDs are used to transmit data in the visible light spectrum. This technology can be compared with that of Wi-Fi and offers advantages like increased accessible spectrum, efficiency, security, low latency and much higher speed. This research paper aims at designing a Li-Fi transceiver using Arduino that is able to transmit digital data. The hardware has been designed using Eagle CAD (version 7.1.0) tool and Proteus design tool (version 8). The software coding is done by using Java (version 8). Successful transmission and reception of text, image and video signals is carried out on the transceiver. Hence this research work gives an innovative way of designing a transceiver which works by using off the shelf low cost components and using visible light spectrum.","PeriodicalId":68067,"journal":{"name":"无线工程与技术(英文)","volume":"08 1","pages":"71-86"},"PeriodicalIF":0.0,"publicationDate":"2017-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41873735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Millimeter-Wave Absorption Properties of Thin Wave Absorber in Free Space with New Porous Carbon Material 新型多孔碳材料薄波吸收体在自由空间中的毫米波吸收特性

无线工程与技术(英文) Pub Date : 2017-09-11 DOI: 10.4236/WET.2017.83004

T. Kamei, H. Shima, Takashi Yamamoto, S. Ogino, S. Ishii

引用次数: 3

A Linear Array Antenna of Microstrip Patch Antennas Fed by the Open-End of Coplanar Waveguides 共面波导开端馈电的微带贴片天线线阵天线

无线工程与技术(英文) Pub Date : 2017-04-14 DOI: 10.4236/WET.2017.82003

T. Kamei, H. Shima, S. Fukuda, S. Ishii

{"title":"A Linear Array Antenna of Microstrip Patch Antennas Fed by the Open-End of Coplanar Waveguides","authors":"T. Kamei, H. Shima, S. Fukuda, S. Ishii","doi":"10.4236/WET.2017.82003","DOIUrl":"https://doi.org/10.4236/WET.2017.82003","url":null,"abstract":"In this \u0000study, we constructed a 4-element linear array antenna using four 20 GHz band \u0000microstrip patch antennas with a structure such that the signal is fed to the \u0000patch antennas from open-end coplanar waveguides without contact. We \u0000investigated factors related to the design of linear array patch antennas. To adjust \u0000the maximum radiation direction and reduce return loss, we optimized the \u0000spacing between the elements and their shape. With an element spacing of 11.50 \u0000mm, patch width of 3.90 mm, and patch length of 4.15 mm, we obtained a \u0000resonance frequency of 20.05 GHz and a return loss of -29.59 \u0000dB at the resonance frequency. However, in the case of a 4-element linear array \u0000antenna structure, undesired resonances occurred in frequency bands other than \u0000the design resonance frequency band of 20 GHz. To suppress these undesired resonances \u0000and obtaining stable operation at the design frequency, we propose a new \u0000structure in which the feed line is \u0000loaded with a short stub, and show through computer simulations that the \u0000occurrence of undesired resonances can be sufficiently suppressed. Furthermore, \u0000we demonstrate the problem of radiation gain reduction caused by introducing a \u0000short stub, propose a design method for a new structure in which the feed line has slits between the \u0000stubs, and show improvement of the antenna gain by 0.5 dBi.","PeriodicalId":68067,"journal":{"name":"无线工程与技术(英文)","volume":"08 1","pages":"37-49"},"PeriodicalIF":0.0,"publicationDate":"2017-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47711927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Selection of Optimal Beam Forming Algorithm for Mobile Ad Hoc Networks 移动Ad Hoc网络最优波束形成算法的选择

无线工程与技术(英文) Pub Date : 2017-01-23 DOI: 10.4236/WET.2017.81002

M. Tarique

{"title":"Selection of Optimal Beam Forming Algorithm for Mobile Ad Hoc Networks","authors":"M. Tarique","doi":"10.4236/WET.2017.81002","DOIUrl":"https://doi.org/10.4236/WET.2017.81002","url":null,"abstract":"Ad hoc networks have drawn considerable attentions of researchers for the last few years. Various applications of ad hoc networks have been reported in the literatures including disaster management, battle field, environmental management, healthcare, and smart grid. Ad hoc networks have some limitations namely short operating life, unreliability, scalability, delay, high interference, and scarce resources. In order to overcome these limitations, numerous researches have been carried out. Smart antenna integration is one of them. It has been shown in the literatures that smart antenna can improve network’s capacity, increase network lifetime, reduce delay, and improve scalability by directing antenna radiation pattern in a desired direction. But, producing a desired antenna radiation pattern is not a simple task for resource constraint ad hoc networks. A careful selection of beam forming algorithm is required. In this paper we show that smart antenna system, consisting of circular microstrip antennas and arranged in a linear arrangement, is the most suitable choice for ad hoc network. We compare a number of smart antenna algorithms in this paper under different noisy conditions. We show that the Least Square Constant Modulus (LSCM) and Least Constant Modulus (LCM) algorithms outperform other algorithms in terms of directivity and minimized side lobes.","PeriodicalId":68067,"journal":{"name":"无线工程与技术(英文)","volume":"08 1","pages":"20-36"},"PeriodicalIF":0.0,"publicationDate":"2017-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44649917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Simple and Cost-Effective EPON-Based Next Generation Mobile Backhaul RAN Architecture 一种简单且经济高效的基于epn的下一代移动回程RAN架构

无线工程与技术(英文) Pub Date : 2017-01-23 DOI: 10.4236/WET.2017.81001

A. Sana, S. R. Zaidi, S. Hussain, M. Nizamuddin

引用次数: 0

Efficient Selfish Attack Detection in Cognitive Radio Network 认知无线网络中的高效自私攻击检测

无线工程与技术(英文) Pub Date : 2016-10-21 DOI: 10.4236/WET.2016.74011

S. Patil, Amrita Janardhanan

引用次数: 0