CAREER: Foundations of Two-Way Communication Networks

双向通信是一种在当前和未来的无线网络中具有重要意义的自然通信形式，其中客户端/双方A和B希望交换信息流。应用包括双向高数据速率远程医疗、视频会议、终端之间的数据同步以及基站和客户之间的通信。研究人员试图建立对如何最好地在网络上通信双向信息交换的基本理解，这与1)通信本质上是双向的努力，但主要被视为两个单向链路，2)新技术已经导致了网络的难以捉摸的能力的重大进展，以及3)最近的结果表明，利用数据的双向性质的技术可以优于单向方法到双向通信的直接扩展，并且显著不同于单向方法到双向通信的直接扩展。这项研究将通过与摩托罗拉、现有的UIC女性参与科学外展项目以及由研究人员领导的UIC软件定义无线电实验室的合作，与实践和教育相结合。其智力优势在于开发了能够解释、预测和分析无线网络上最佳双向通信策略的新的理论基础。研究人员着重于三个方面：1)引入双向通信框架，以了解在不同的信道模型和关于双向适应性的假设下有中继和无中继的双向网络；2)推导出双向框架中日益复杂的子集的精确的、可选的保证容量的性能表征；3)确定何时分离是最优的，并推导出在有噪声的双向网络上传输相关信源的联合信源-信道率失真区域。

Two-way communication, where clients/parties A and B wish to exchange a stream of information, is a natural form of communication of great relevance in present and future wireless networks. Applications include two-way high data-rate tele-medicine, video-conferencing, the synchronization of data among terminals, and communication between a base station and clients. The investigator seeks to establish a fundamental understanding of how best to communicate two-way exchanges of information over networks, of immediate relevance as 1) communication is intrinsically a two-way endeavor but has mainly been treated as two one-way links, 2) new techniques have led to significant progress towards the elusive capacity of a network, and 3) recent results have shown that techniques which exploit the two-way nature of the data can outperform and differ markedly from straightforward extensions of one-way methods to two-way communications. The research will be integrated with practice and education through partnering with Motorola, existing UIC Women in Science outreach programs, and the investigator-led UIC Software-Defined Radio Lab.The intellectual merit lies in the development of novel theoretical foundations able to explain, predict and analyze optimal two-way communication strategies over wireless networks. The investigator focuses on three integrated thrusts: 1) the introduction of a framework for two-way communications to understand two-way networks with and without relays under different channel models and assumptions on two-way adaptability, 2) the derivation of exact, and alternative performance guaranteeing capacity characterizations for increasingly complex subsets of the two-way framework, and 3) the determination of when separation is optimal and derivation of joint source-channel rate distortion regions for the transmission of correlated sources over noisy two-way networks.