Energy-Efficient Systems for Smart Sensor Communications

Z. M. Hussain
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引用次数: 9

Abstract

A wireless sensor network (WSN) is a communication network with ad hoc configuration consisting of a number of tiny, low-power, low-cost sensors which are normally distributed in a decentralized fashion and have limited processing capability. WSNs have found a wide range of applications such as industrial process control, healthcare monitoring, surveillance, forest fire detection, natural disaster detection, target tracking, among many other applications. It is known that WSNs are resource-constrained, hence, energy efficiency is crucial for all applications of WSNs to extend the life span of the sensors' batteries. The most energy consuming operation in WSN is data communication, hence, it is important to reduce amount of data transmission through WSNs without significantly affecting the transferred information. In this paper we will focus on two directions of data-efficient signal representations that are expected to provide WSNs with sufficient energy control. The first direction is the use of intelligent short word-length (SWL) systems via embedded sigma-delta modulation, and the second direction is to use compressive sensing (CS) with chaotic sequences. If security is a factor, then CS via chaos can support secure communication in addition to its main function as a technique for data compression.
智能传感器通信的节能系统
无线传感器网络(WSN)是一种由许多微小、低功耗、低成本的传感器组成的自组织通信网络,这些传感器以分散的方式正态分布,处理能力有限。无线传感器网络已经找到了广泛的应用,如工业过程控制,医疗监测,监视,森林火灾探测,自然灾害探测,目标跟踪,以及许多其他应用。众所周知,无线传感器网络资源有限,因此,能源效率对于无线传感器网络的所有应用至关重要,以延长传感器电池的寿命。在无线传感器网络中,最耗能的工作是数据通信,因此,在不显著影响传输信息的前提下减少通过无线传感器网络传输的数据量是非常重要的。在本文中,我们将重点关注数据高效信号表示的两个方向,这两个方向有望为wsn提供足够的能量控制。第一个方向是使用智能短字长(SWL)系统通过嵌入式sigma-delta调制,第二个方向是使用压缩感知(CS)与混沌序列。如果安全性是一个因素,那么通过混沌的CS除了作为数据压缩技术的主要功能外,还可以支持安全通信。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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