Compress sensing algorithm for estimation of signals in sensor networks

Wireless Networks - In this research, we present a data recovery scheme for wireless sensor networks. In some sensor networks, each node must be able to recover the complete information of the...     

Prediction of time series using wavelet Gaussian process for wireless sensor networks

Wireless Networks - The detection and transmission of a physical variable over time, by a node of a sensor network to its sink node, represents a significant communication overload and consequently...     

Memetic algorithm applied to topology control optimization of a wireless sensor network

Wireless Networks - In most applications of wireless sensor networks the specification of the corresponding topology can be useful for the optimization of some important features, such as: node...     

An energy-aware forecasting-based framework using a novel moving coordinate scheme for sensor real-time communications

Wireless Networks - In order to save on the energy expended by a sensor node in its communications with the sink, forecasting-based frameworks have recently been proposed. Those frameworks...     

Improved fish migration optimization with the opposition learning based on elimination principle for cluster head selection

Wireless Networks - In the wireless sensor networks (WSN), the cluster head node receives and aggregates the information collected by the sensors and forwards it to the base station (BS)....     

Self-heat controlling energy efficient OPOT routing protocol for WBAN

Wireless Networks - Recent technological advancements in miniaturization of sensor and wireless communication lead to development of Wireless Body Area Networks (WBAN). It is similar to Wireless...     

无线多媒体传感器网络研究

无线多媒体传感器网络(WMSNs)是在传统无线传感器网络(WSNs)的基础上发展起来的具有音频、视频、图像等多媒体信息感知功能的新型传感器网络,具有广阔的应用前景。该文介绍了WMSNs的概念,分析了WMSNs区别于传统WSNs的个性化特点。对节点系统、MAC协议、路由协议、多媒体信息处理等关键技术的国内外研究现状、面临的问题和可行的解决方案进行了深入探讨。最后对WMSNs亟待解决的问题和发展趋势进行了总结。     

无线传感网络部分覆盖技术研究展望

在无线传感网络(Wireless Sensor Networks,WSN)技术中,各传感节点覆盖区域的研究是这项技术应用的基础课题.文章对国外最近提出的部分覆盖技术进行了收集整理,对其技术特性做了分析和对比.从覆盖度、节点分布特性、节点类型以及网络拓扑结构4方面对这些技术进行比较.最后,对部分覆盖技术的未来可能的研究方...     

分布式交互方向拉格朗日乘子声源定位算法

如何实现高效的分布式声源定位是无线传感器网络研究的热点。通过一种基于声源信号能量的分布式声源定位算法,采用交互方向的拉格朗日乘子方法将最大似然声源定位问题拆分到单个传感器节点,通过桥接传感器节点实现传感器节点之间的信息融合。由于采用声源信号衰减模型,交互方向拉格朗日乘子方法中的最优化目标函数成为非凸函数,导致定位算法容易陷入局部最优,为此提出了多重网格搜索方法。仿真结果表明,新算法与现有的分布式声源定位算法相比,具有可并行实现,可应用于任意网络拓扑,不易陷于局部最优等优点。     

Energy efficient and secured distributed data dissemination using hop by hop authentication in WSN

Wireless Networks - Dissemination is a service provided for Wireless Sensor Networks to update the deployed sensor nodes online by using over air programming through radio communication. Since the...     

Energy efficient secured K means based unequal fuzzy clustering algorithm for efficient reprogramming in wireless sensor networks

Wireless Networks - Wireless Sensor Networks (WSNs) is a collection of tiny distributed sensor nodes that have been used to sense the physical parameters of the environment where it has been...     

A state-of-the-art survey on wireless rechargeable sensor networks: perspectives and challenges

Wireless Networks - Wireless rechargeable sensor network (WRSN) is an emerging technology that has risen intending to enhance network lifetime of the conventional wireless sensor networks (WSNs)....     

A new data aggregation approach for WSNs based on open pits mining

Wireless Networks - Wireless sensor networks consist of a large number of sensor nodes with limited energy, which is widely used in various Internet of things scenarios in recent years. Regarding...     

An energy efficient image compression scheme for wireless multimedia sensor network using curve fitting technique

Wireless Networks - Wireless multimedia sensor network (WMSN) comprising of miniature sensor nodes is capable of processing multimedia data traffic such as still images and video from the...     

Certain Investigation on Healthcare Monitoring for Enhancing Data Transmission in WSN

International Journal of Wireless Information Networks - Wireless Sensor Networks are often to perform autonomous sensing and controlling the real world objects through the sensor nodes across the...     

A Survey on Efficient Power Consumption in Adaptive Wireless Sensor Networks

The paper aims to give an extensive overview of the energy constraints in Wireless Sensor Networks and the power management strategies used in the literature as power efficiency is considered as the most challenging issue in WSNs. The paper opted for an investigative study of the adaptive systems that represent efficient solutions to deal with environmental and context changes in wireless sensor Networks. It provides thorough insights about how change has brought about the use of adaptive systems in WSNs. It proposes a new adaptation technique inspired from combining adaptation in different layers and can be more efficient and performing. This paper fulfills an identified need to study reconfigurable systems to achieve power efficiency, as a sensor node is power constrained.     

无线传感器网络休眠MAC协议分析

无线传感器网络中每个传感器节点一般采用电池供电,能量有限,需要有效的可休眠的MAC协议来保持能量的高效利用,因此休眠MAC协议成为研究的重要方向之一。目前已经有很多种为无线传感器网络设计的MAC协议,其中一个重要的分支就是基于局部同步周期休眠／监听排程的S-MAC协议及其各种改进协议。论文首先介绍了无线传感器网络中与MAC协议设计相关的一些特性。其次对S-MAC协议的基本原理以及各种改进协议的原理进行了说明,并分析了它们各自的优缺点。     

基于DV-HOP的改进算法WDV-HOP及仿真

无线传感器网络节点的位置信息对于收集信息至关重要。节点定位技术是无线传感器网络中的关键技术之一。文中在分析了传统DV-HOP算法的基础上提出了改进算法WDV-HOP(加权DV-HOP),并对改进的算法进行仿真验证。仿真结果表明,WDV-HOP算法在相同的锚节点数量及覆盖半径下,节点定位精度有3%的提高。另外,WDV-HOP算法还可减少锚节点的数量,降低了网络硬件投资成本。     

基于连通度和加权校正的移动节点定位算法

移动节点定位问题是无线传感器网络中的研究重点。针对移动节点定位误差大的问题,提出一种基于连通度和加权校正的移动节点定位算法。在未知节点移动过程中,根据节点间连通度大小选取参与定位的信标节点,利用加权校正方法修正RSSI测距信息,然后用最小二乘法对未知节点进行位置估计。仿真分析表明,节点通信半径和信标密度在一定范围内,该算法表现出良好的定位性能,定位精度明显提升。     

An efficient cluster-based communication protocol for wireless sensor networks

A wireless sensor network is a network of large numbers of sensor nodes, where each sensor node is a tiny device that is equipped with a processing, sensing subsystem and a communication subsystem. The critical issue in wireless sensor networks is how to gather sensed data in an energy-efficient way, so that the network lifetime can be extended. The design of protocols for such wireless sensor networks has to be energy-aware in order to extend the lifetime of the network because it is difficult to recharge sensor node batteries. We propose a protocol to form clusters, select cluster heads, select cluster senders and determine appropriate routings in order to reduce overall energy consumption and enhance the network lifetime. Our clustering protocol is called an Efficient Cluster-Based Communication Protocol (ECOMP) for Wireless Sensor Networks. In ECOMP, each sensor node consumes a small amount of transmitting energy in order to reach the neighbour sensor node in the bidirectional ring, and the cluster heads do not need to receive any sensed data from member nodes. The simulation results show that ECOMP significantly minimises energy consumption of sensor nodes and extends the network lifetime, compared with existing clustering protocol.