NeTS: ProWiN: Wireless Spectral Interference and its Impact on Dynamic Network Connectivity

Nets：ProWiN：无线频谱干扰及其对动态网络连接的影响Dennis Roberson，Illinois Institute Of Technology摘要无线设备和辐射源密度的增加产生了显著的聚合干扰，对网络性能产生了不利影响。 有一个强烈的动机，彻底了解干扰现象，并自适应地调整无线网络，以减轻其影响。 研究目标是对2.4 GHz电磁干扰的几种设备的发射进行编码采用三管齐下的方法：（1）在时域和频谱域中建立干扰信号的理论模型;（2）通过计算机仿真验证干扰模型;（3）物理实验验证和提高了已有结果的准确性，从而增加了实验工作量。 测量对无线网络吞吐量的聚合效应，并将其与干扰温度相关。 这些结果表明，可以开发技术来改善网络连接。 时间、空间和频谱尺度可以有利地用于自适应算法中，以平坦化干扰，并有助于诸如超宽带的无线电网络的发展，这项研究将产生广泛的影响，并使技术界更好地理解如何使用可用的网络资源。 网络性能的改善可以为无线行业带来显著的成本节约。 一个重要的影响将是美国政府的传播政策。 本研究将加强对研究生和本科生的教育和培训。 结果将通过公众演示、专题讨论会、研讨会和出版物传播。

NeTS: ProWiN: Wireless Spectral Interference and its Impact on Dynamic Network ConnectivityAward 0435389Dennis Roberson, Illinois Institute Of TechnologyAbstractThe increasing density of wireless devices and radiating sources generates significant aggregate interference adversely affecting network performance. There is a strong motivation to thoroughly understand the interference phenomenon and adaptively adjust a wireless network to mitigate its effect. The research objective is to codify the emission from several devices that produce electromagnetic interference in the 2.4 GHz (and potentially 5 GHz) unlicensed band.A three-prong methodology is employed: (1) development of a theoretical model of the interfering signal in the temporal and spectral domains; (2) the validation of the interference model via computer simulation; (3) physical experimentation to verify and enhance the accuracy of the previous results, which in turn augment the experimental work.For the devices considered, the interference temperature is determined as an outcome. The aggregate effect on wireless network throughput is measured and related to the interference temperature. These results suggest that techniques can be developed to improve network connectivity. Temporal, spatial, and spectral scales can be advantageously used in adaptive algorithms to flatten interference and assist in the development of underlay networks, such as ultrawideband.This research will have broad impact and allow the technical community to better understand how to use the available network resources. Network performance improvement can result in significant cost saving to the wireless industry. An important impact will be on U.S. government communication policy. The education and training of graduate and undergraduate students will be enhanced by this research. The results will be disseminated via public demonstrations, symposia, seminars, and publications.