Joint Source-Channel Coding Theory with Applications to Wireless Communication Networks

在这项申请中，我们寻求资金继续我们在信息理论和无线通信方面的研究计划。该研究计划涉及开发先进的联合信源-信道编码(JSCC)技术，以提高无线通信网络的可靠性、连接性和速度，并满足快速增长的无缝和无处不在的无线多媒体服务的需求。JSCC提供了一种正确的方法来构造最佳编码，以便在噪声信道上高效地传输数据源，特别是在严格的延迟和复杂性限制下，并且对于香农关于数据压缩和信道编码分离的原则通常不成立的多用户网络。基于我们在JSCC方面的经验和广泛的成果，我们将专注于以下三个相互关联的研究主旨领域：(1)研究基本的信息论极限，即容量和JSCC错误指数，用于在多用户网络上编码和传输信息并在可以忽略的损失的情况下恢复信息；(2)发展复杂但易于分析的离散信道模型，以明智地表示使用多天线和软判决解调的无线(相关衰落)网络的行为；(3)设计、构建和分析用于无线网络的强大的低复杂性JSCC技术，并将其应用于无线多媒体通信和节能传感器网络。拟议的研究将包括每年严格培训8名高素质人员(3名博士、2名硕士和2名本科生以及1名博士后)，让他们沉浸在信息论和无线通信的及时挑战主题中，并产生创新的高质量出版物。这一研究计划的结果预计将使人们对JSCC的基本原理和实践方面有更深入的了解，从而为无线通信和多媒体技术的可持续改进做出积极贡献。

In this application, we seek funding to continue our research program in information theory and wireless communications. The research program concerns the development of advanced joint source-channel coding (JSCC) technologies for improving the reliability, connectivity and speed of wireless communication networks and meeting the rapidly growing demand for seamless and ubiquitous wireless multimedia services. JSCC provides the right approach to construct the best codes for the efficient transmission of data sources over noisy channels, particularly under stringent delay and complexity constraints, and for multi-user networks where Shannon's principle for the separation of data compression and channel coding fails to hold in general. Building on our experience and extensive achievements in JSCC, we will focus on the following three interconnected research thrust areas:(1) The investigation of the fundamental information-theoretic limits, namely capacity and JSCC error exponent, for coding and transmitting information over multi-user networks and recovering it with negligible loss; (2) The development of sophisticated but analytically tractable discrete channel models to judiciously represent the behavior of wireless (correlated fading) networks used with multiple antennas and soft-decision demodulation; (3) The design, construction and analysis of powerful low-complexity JSCC techniques for wireless networks, with applications to wireless multimedia communications and energy-efficient sensor networks.The proposed research will feature the rigorous training of eight highly qualified personnel per year (3 doctoral, 2 Masters and 2 undergraduate students, as well as one postdoctoral fellow), immersing them in timely challenging topics in information theory and wireless communications and resulting in innovative high-quality publications. The results of this research program are anticipated to provide a deeper understanding of both the fundamental principles and the practical aspects of JSCC, thus positively contributing to a sustainable improvement of wireless communications and multimedia technologies.