CAREER: Foundations of Two-Way Communication Networks

双向通信是客户端/双方A和B希望交换信息流的一种自然通信形式，在当前和未来的无线网络中具有重要意义。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与客户端之间的通信。研究者试图建立一个关于如何在网络上最好地沟通双向信息交换的基本理解，这是直接相关的，因为1)通信本质上是双向的努力，但主要被视为两个单向链接；2)新技术已经导致网络难以捉摸的能力取得重大进展；3)最近的结果表明，利用数据的双向特性的技术可以优于单向方法的直接扩展到双向通信，并且明显不同。该研究将通过与摩托罗拉、现有的UIC女性科学推广计划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。智力上的优点在于发展了新的理论基础，能够解释、预测和分析无线网络上最优的双向通信策略。研究者专注于三个综合推力：1)引入一个双向通信框架，以理解在不同信道模型和双向适应性假设下有中继和没有中继的双向网络；2)为双向框架日益复杂的子集推导出精确的、可替代的性能保证容量特征；3)确定最优分离时间，推导相关信源在噪声双向网络上传输的联合信路速率失真区域。

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.