SGER: Channel Modeling and Adaptive Transmitter/Receiver Design for Outdoor Ultrawideband Communication Systems

综合、混合和复杂系统室外超宽带通信系统的Alexandra Duel-Hallen信道建模和自适应发射机/接收机设计本研究的目的是通过利用单个多径分量的频率相关失真来缓解室外超宽带通信系统中由于阴影和其他具有挑战性的传播环境所造成的潜在中断。该方法是创建一个新的物理模型，并将其用于测试室外超宽带系统的稳健接收算法和自适应传输方法。智能优点：开发了一种新颖的室外超宽带信道模型，该模型提供了设计和验证通信方法所需的典型且具有挑战性的数据集和见解。研究了具有频率相关传播增益的超宽带射频信道的稳健低复杂度接收机和自适应传输方法。这一变革性的想法涉及在超宽带频谱的较低频段(最高1 GHz)或较高频段(高于3 GHz)(由联邦通信委员会的掩码指定)中传输脉冲，这取决于哪一个更强。到目前为止，超宽带研究仅集中在较高频段的脉冲传输。该项目充分发挥了自适应选择频谱不同部分的优势和可行性。广泛的影响：该项目促进了无线物理信道建模和超宽带收发算法的发展。它具有改进物理层超宽带系统和跨层无线网络设计的潜力。这项研究是通信理论、物理和信号处理的跨学科努力。通过论文和课堂项目，这项研究将为不同的研究生和本科生提供对未来职业成功至关重要的多才多艺的技能。

Integrative, Hybrid and Complex SystemsAlexandra Duel-HallenChannel Modeling and Adaptive Transmitter/Receiver Design for Outdoor Ultrawideband Communication SystemsThe objective of this research is to alleviate potential outages in outdoor ultrawideband communications systems due to shadowing and other challenging propagation environments by exploiting the frequency-dependent distortion of individual multipath components. The approach is to create a novel physical model and to use it in testing robust receiver algorithms and adaptive transmission methods for outdoor ultrawideband systems. Intellectual Merit: A novel outdoor ultrawideband channel model that provides typical and challenging data sets and insights required for designing and validating communications methods is developed. Robust low-complexity receivers and adaptive transmission methods for ultrawideband radio frequency channels with frequency dependent propagation gains are investigated. The transformative idea involves transmission of pulses either in the lower (up to 1 GHz) or upper (above 3 GHz) band of the ultrawideband spectrum (as specified by the Federal Communication Commission's mask), depending upon which is stronger. Ultrawideband research to date has focused on transmission of pulses only in the upper band. The benefits and feasibility of selecting different parts of the spectrum adaptively are exploited in this project.Broader impacts: The project advances the state of the art in physical wireless channel modeling and ultrawideband transceiver algorithms. It has the potential to improve physical layer ultrawideband systems and cross-layer wireless network design. This research is an interdisciplinary effort in communication theory, physics, and signal processing. Through thesis and class projects this research will provide diverse graduate and undergraduate students with versatile skills essential for future career success.