NeTS-ProWIN: Wireless Interference: Characterization and Impact on Network Performance

NeTS-ProWIN：无线干扰：特征及其对网络性能的影响

• 批准号: 0520232
• 负责人: Dennis Roberson
• 金额: --
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0520232&HistoricalAwards=false
• 关键词: NeTS; ProWIN; Wireless; Interference; Characterization

The proliferation of wireless applications creates an increased density of wireless devices. Information-bearing signals from these devices generate significant aggregate interference that adversely affects Wireless Local Area Network (WLAN) performance. Non-data bearing radiated signals also contaminate the space of WLANs in unlicensed bands. To date, this interference problem has largely been treated in an incremental, application specific manner. Thus, there is strong motivation to thoroughly understand this interference phenomenon to improve WLAN design, and ultimately adapt WLANs to dynamically mitigate interference degradation.This effort focuses on: the development of quantifiable interference characteristics of wireless receivers and, intentional and unintentional transmitters; the establishment of a means of understanding and characterizing interference temperature; and the use of this critical information to enhance interference and general error-modeling capabilities of network simulation tools. These objectives are achieved via a three-prong methodology: (1) theoretical modeling of interfering signals in temporal and spectral domains; (2) simulation modeling for studying the impact of interference on network performance including specific protocols, applications, and validation of interference models; (3) physical experimentation to verify and enhance theoretical and simulation results, augmenting empirical observations.The broad impact of this research allows the technical community to better understand wireless network resource management, leading to significant economic savings and performance improvements. Another important impact is on U.S. government communications policy. Education and training of students in this field is enhanced. Public demonstrations, symposia, and print/broadcast media are employed to disseminate results.

无线应用的激增导致无线设备的密度增加。 来自这些设备的信息承载信号会产生显着的聚合干扰，对无线局域网 (WLAN) 性能产生不利影响。 非数据承载辐射信号也会污染非授权频段中的 WLAN 空间。 迄今为止，这一干扰问题很大程度上已通过渐进式、特定于应用的方式得到解决。 因此，有强烈的动机彻底了解这种干扰现象，以改进 WLAN 设计，并最终调整 WLAN 来动态减轻干扰恶化。这项工作的重点是：开发无线接收器以及有意和无意发射器的可量化干扰特性；建立一种理解和表征干扰温度的方法；以及利用这些关键信息来增强网络仿真工具的干扰和一般错误建模能力。 这些目标通过三管齐下的方法来实现：（1）时域和频谱域中干扰信号的理论建模； (2) 仿真建模，用于研究干扰对网络性能的影响，包括具体协议、应用以及干扰模型的验证； (3) 物理实验，以验证和增强理论和模拟结果，增强实证观察。这项研究的广泛影响使技术界能够更好地了解无线网络资源管理，从而带来显着的经济节省和性能改进。 另一个重要影响是对美国政府的传播政策。 加强该领域学生的教育和培训。 利用公众示威、研讨会和印刷/广播媒体来传播结果。