Int. J. Wirel. Networks Broadband Technol.最新文献_第3页

Adaptive Aperture Aided Antenna Design for SISO-MIMO Systems using Fuzzy C-Mean Clustering 基于模糊c均值聚类的sisomimo系统自适应孔径辅助天线设计

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-07-01 DOI: 10.4018/IJWNBT.2015070103

Parismita A. Kashyap, K. K. Sarma

{"title":"Adaptive Aperture Aided Antenna Design for SISO-MIMO Systems using Fuzzy C-Mean Clustering","authors":"Parismita A. Kashyap, K. K. Sarma","doi":"10.4018/IJWNBT.2015070103","DOIUrl":"https://doi.org/10.4018/IJWNBT.2015070103","url":null,"abstract":"One of the most relevant themes of wireless communication is to achieve better spectral efficiency and provide high reliability while providing rich-content data services despite the existence of several serious challenges. A few of them are multipath fading, multi-user interference, co-channel interference CCI, inter symbol interference ISI etc to name a few. Several techniques have already been developed and deployed to eliminate the fading effects. One of the less explored techniques which have been adopted and discussed in this chapter is based on the structure of the transmitting antenna. The physical dimension of the antenna is varied as per the fading condition by adopting a dynamic process which adjusts the structure to provide the best quality of service QoS. Two types of antenna set-ups are considered-Single Input-Single Output SISO and Multiple Input-Multiple Output MIMO. The transmitting antenna in this system adaptively updates its aperture to improve the system performance and at the same time optimizes the driving power of the antenna as per requirement. The system changes the effective aperture of the transmitting antenna in high data rate, time varying Rayleigh channels to adapt to a previously set Bit error Rate BER. However, in a real time environment the BER keeps on changing based on the channel condition. It is difficult to attain a fixed value of BER and hence even more difficult to model the antenna structure for a single time instant. As a result there exist a number of effective aperture dimensions for various BER in a single time instant. Out of the various values, two specific limits of the effective aperture of the transmitting antenna needs to be decided. Fuzzy C-Mean FCM Clustering method being one of the most popular and efficient clustering technique is used to set two limits of the aperture within which a particular threshold of the BER is obtained at one particular instant of time. The results derived show the effectiveness of the entire system.","PeriodicalId":422249,"journal":{"name":"Int. J. Wirel. Networks Broadband Technol.","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114229326","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

Information Theoretic Approach with Reduced Paging Cost in Wireless Networks for Remote Healthcare Systems 降低远程医疗系统无线网络寻呼成本的信息理论方法

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-07-01 DOI: 10.4018/IJWNBT.2015070101

R. Agrawal, Amit Sehgal

引用次数: 1

Distributed Computation in Wireless Sensor Networks: Efficient Network Architectures and Applications in WSNs 无线传感器网络中的分布式计算:高效的网络架构及其在wsn中的应用

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-07-01 DOI: 10.4018/IJWNBT.2015070102

Tejaswini Devanaboyina, Balakrishna Pillalamarri, G. R. Murthy

{"title":"Distributed Computation in Wireless Sensor Networks: Efficient Network Architectures and Applications in WSNs","authors":"Tejaswini Devanaboyina, Balakrishna Pillalamarri, G. R. Murthy","doi":"10.4018/IJWNBT.2015070102","DOIUrl":"https://doi.org/10.4018/IJWNBT.2015070102","url":null,"abstract":"Wireless Sensor Networks are used to perform distributed sensing in various fields like health, military, home etc where the sensor nodes communicate among themselves and do distributed computation over the sensed values to identify the occurrence of an event. The architecture for distributed computation of primitive recursive functions and median is presented in this paper. This paper assumes the no memory computational model of sensor nodes; in the architecture for primary recursive functions i.e. the sensor nodes only have two registers. This assumption is not made for the computation of median. This paper also explores the applications of wireless sensor networks in building a smart, hassle free transportation system. In purview of emerging technologies like Internet of things and Vehicular Ad Hoc networks, the transport system can be made user friendly by including itinerary planning, dynamic speed boards etc. Already research is moving in the direction of making transport system efficient and user-friendly. This paper serves as a one more step in the process of achieving it.","PeriodicalId":422249,"journal":{"name":"Int. J. Wirel. Networks Broadband Technol.","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127524749","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: 2

A Signal Adaptation Mechanism for Power Optimization of Wireless Adapters 一种无线适配器功率优化的信号自适应机制

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-07-01 DOI: 10.4018/IJWNBT.2015070104

C. Bouras, V. Kapoulas, Georgios Kioumourtzis, K. Stamos, N. Stathopoulos, Nikos Tavoularis

引用次数: 1

On BFSA Collision Resolution in LF, HF, and UHF RFID Networks 低频、高频和超高频RFID网络中BFSA冲突的解决

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-04-01 DOI: 10.4018/IJWNBT.2015040104

Varun Bhogal, Z. Prodanoff, S. Ahuja, Kenneth Martin

引用次数: 8

A Weighted Routing Scheme for Industrial Wireless Sensor Networks 一种工业无线传感器网络的加权路由方案

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-04-01 DOI: 10.4018/IJWNBT.2015040101

Manish Kumar, R. Tripathi, S. Tiwari

引用次数: 1

Designing a Compact Wireless Network based Device-free Passive Localisation System for Indoor Environments 基于无线网络的室内无源定位系统设计

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-04-01 DOI: 10.4018/IJWNBT.2015040103

P. Vance, G. Prasad, J. Harkin, K. Curran

{"title":"Designing a Compact Wireless Network based Device-free Passive Localisation System for Indoor Environments","authors":"P. Vance, G. Prasad, J. Harkin, K. Curran","doi":"10.4018/IJWNBT.2015040103","DOIUrl":"https://doi.org/10.4018/IJWNBT.2015040103","url":null,"abstract":"Determining the location of individuals within indoor locations can be useful in various scenarios including security, gaming and ambient assisted living for the elderly. Healthcare services globally are seeking to allow people to stay in their familiar home environments longer due to the multitude of benefits associated with living in non-clinical environments and technologies to determine an individual's movements are key to ensuring that home emergencies are detected through lack of movement can be responded to promptly. This paper proposes a device-free localisation DFL system which would enable the individual to proceed with normal daily activities without the concern of having to wear a traceable device. The principle behind this is that the human body absorbs/reflects the radio signal being transmitted from a transmitter to one or more receiving stations. The proposed system design procedure facilitates the use of a minimum number of wireless nodes with the help of a principle component analysis PCA based intelligent signal processing technique. Results demonstrate that human detection and tracking are possible to within 1m resolution with a minimal hardware infrastructure.","PeriodicalId":422249,"journal":{"name":"Int. J. Wirel. Networks Broadband Technol.","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122601979","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: 15

Correlations between Centrality Measures for Mobile Ad hoc Networks 移动自组织网络中心性度量之间的相关性

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-04-01 DOI: 10.4018/IJWNBT.2015040102

N. Meghanathan

引用次数: 3

Lifetime Enhancement of Wireless Multimedia Sensor Networks Using Data Compression 利用数据压缩增强无线多媒体传感器网络的寿命

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2015-04-01 DOI: 10.4018/IJWNBT.2015040105

Pushpender Kumar Dhiman, N. Chand

引用次数: 16

An MPEG-DASH Methodology for QoE-Aware Web3D Streaming 面向qos感知的Web3D流的MPEG-DASH方法

Int. J. Wirel. Networks Broadband Technol. Pub Date : 2014-10-01 DOI: 10.4018/ijwnbt.2014100101

K. Kapetanakis, M. Zampoglou, A. Malamos, S. Panagiotakis, E. Maravelakis

引用次数: 13