Fault-Tolerant Cooperative Communication in Large-Scale Wireless Networks

本研究的目标是开发一种全新的协作通信体系结构，该体系结构本质上是可自扩展的，在存在传输错误和恶意攻击的情况下具有健壮性，并且允许分散的网络操作以灵活地适应具有噪声信道的大规模无线网络中的拓扑变化。该方法将前一跳的奇偶校验与下一跳的奇偶校验级联，使得纠错能力随跳数以乘法方式增长，随机生成独立于其他中继节点的奇偶校验，并利用跨层设计利用节点协作来获得超越传统节点内跨层协作的互惠互利。由于分析方面的挑战，以前在这一领域的大部分研究都局限于小规模网络的容量界限。因此，现有的知识体系在提供协作通信的好处、提供差错概率结果以及考虑大规模网络的复杂性方面是有限的。这项研究试图解决这一局限。从更广泛的影响来看，该研究有可能改进许多类型的无线网络的设计和运行，包括嵌入式网络、无线传感器网络、自组织网络、Mesh网络和蜂窝网络。这些网络具有广泛的应用，包括监控、健康和环境监测、公共安全和应急响应。研究成果与本科生和研究生教育相结合。研究成果还将用于一个针对当地高中生的示范项目，目的是扩大对工程的参与。

AbstractSang Wu KimIowa State UniversityFault-Tolerant Cooperative Communication in Large-Scale Wireless NetworksThe objective of this research is to develop a fundamentally new cooperative communication architecture that is inherently self-scalable, robust in the presence of transmission errors and malicious attacks, and allows decentralized network operation with flexibility for topology changes in large-scale wireless networks with noisy channels. The approach is to concatenate the parities of previous hops with those of the next hop such that the error correction capability grows with the number of hops in a multiplicative manner, generate parities randomly independent of other relay nodes, and exploit node cooperation using cross-layer design to obtain mutual benefits beyond those of traditional cross-layer cooperation within individual nodes.With respect to intellectual merit, this work considers practical cooperative communication methodologies that promote efficient and secure data transmission in noisy, large-scale wireless networks. Because of analytical challenges, much of the prior research in this area has been limited to capacity bounds for small-scale networks. Thus, the existing body of knowledge is limited with respect to delivering the benefits of cooperative communication, providing error probability results, and accounting for the complexity of large-scale networks. This research attempts to address this limit.With respect to broader impacts, the research has the potential to improve the design and operation of many types of wireless networks, including embedded networks, wireless sensor networks, ad-hoc networks, mesh networks, and cellular networks. These networks have a wide range of applications, including surveillance, health and environmental monitoring, public safety, and emergency response. Research outcomes are integrated with undergraduate and graduate education. Research outcomes will also be used in a demonstration program for local high school students with the goal of broadening participation in engineering.