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Digital Transmission Concepts for Underground Communications UsingMagnetic Induction

使用磁感应的地下通信数字传输概念

基本信息

批准号：
188424568
负责人：
Professor Dr.-Ing. Wolfgang Gerstacker
金额：
--
依托单位：
Lehrstuhl für Digitale Übertragung
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/188424568?language=en
关键词：
Digital Transmission Concepts Underground Communications

项目摘要

The objective of Wireless Underground Sensor Networks (WUSNs) is to establish an efficient wireless communication in the underground medium. A magnetic induction (MI) based signal transmission scheme has been proposed to overcome the very harsh propagation conditions in WUSNs. Due to a much lower vulnerability to the environmental changes, the MI technique has been shown to improve the system performance in terms of achievable data rates and coverage compared to the traditional electromagnetic (EM) wave based transmission. In the previous works, the first steps in network optimization and design of signal processing algorithms for MI-WUSNs have been made. Typically, the proposed approaches aim at increasing the achievable data rates for point-to-point transmissions and the theoretical throughput of a network with multiple sensor nodes, respectively. In this part of the project, the performance of the digital transmission will be further improved by introducing multiple coils based transceivers. This approach is motivated by the multiple-input multiple-output (MIMO) systems in RF communications using multiple antennas, which enable high diversity and multiplexing gains. Furthermore, for operating with sufficient energy in the underground medium with limited access to the surface, sensor nodes need to harvest energy and support each other by means of wireless power transfer, which will be investigated as well. An important task of wireless sensor networks is the localization of persons and objects. In order to enable this functionality in MI-WUSNs and to provide a sufficient level of accuracy, novel localization algorithms will be developed, which take into account the typical signal propagation characteristics of MI-WUSNs.

无线地下传感器网络的目标是在地下介质中建立高效的无线通信。提出了一种基于磁感应（MI）的信号传输方案，以克服WUSN中非常苛刻的传播条件。由于对环境变化的脆弱性要低得多，与传统的基于电磁（EM）波的传输相比，MI技术已被证明在可实现的数据速率和覆盖范围方面提高了系统性能。在以前的工作中，网络优化和信号处理算法的设计MI-WUSNs的第一步已经取得。通常情况下，所提出的方法的目的是增加可实现的数据传输速率点到点的传输和理论吞吐量的网络与多个传感器节点，分别。在该项目的这一部分中，数字传输的性能将通过引入基于多个线圈的收发器来进一步提高。这种方法的动机是多输入多输出（MIMO）系统在RF通信中使用多个天线，这使得高分集和复用增益。此外，为了在地下介质中使用足够的能量进行操作，而对地面的访问有限，传感器节点需要通过无线功率传输来收集能量并相互支持，这也将被研究。无线传感器网络的一个重要任务是对人和物体的定位。为了在MI-WUSNs中实现此功能并提供足够的准确度，将开发新的定位算法，该算法考虑MI-WUSNs的典型信号传播特性。