Studies on joint source-channel coding approaches for multicast of successfully refined sources

***针对媒体内容传输的无线组播，由于其一对多的传输性质，可以根据接收方的数量进行扩展，因此有望支持众多新兴的移动应用，如移动IPTV、电子广告、移动游戏等。考虑到其重要性，提出的DG计划研究了一种新的编码无线多播框架，称为可扩展源编码叠加编码（SSC-SPC），旨在通过源编码和信道编码之间的智能映射创建多分辨率传输。具体来说，我们计划在一些有趣的场景中解决SSC-SPC组播的问题，包括逻辑SSC-SPC传输范式（称为SSC-L-SPC），它可以在接收器上实现简单和标准的兼容设计，以及分别以解码和转发（DF），放大和转发（AF），非正交AF （NAF）方式在单中继和多中继网络上实现SSC-SPC组播。它们被认为是文献中缺失的部分，对研究界来说很有趣。研究结果将有助于深入了解SSC-SPC传输在各种网络基础设施支持下的性能，并为相关研究的最新进展做出坚实的贡献。***根据拟定的研究课题，拟定的DG项目有丰富的研究活动，参与的学生将在网络架构设计、系统和问题制定、优化、案例研究/模拟等方面得到充分的训练，其中包括两名博士研究生和一名暑期合作学生。他们不仅将学习学术研究技能，还将了解3GPP的多媒体广播多播服务（MBMS）和LTE的多播单频网络（MBSFN）等行业标准化进展

Studies on joint source-channel coding approaches for multicast of successively refined***sources via noisy channels***Wireless multicast for media content delivery is expected to support numerous emerging mobile applications, such as mobile IPTV, electronic advertisements, and mobile gaming, due to its one-to-many transmission in nature that is scalable to the number of receivers. Envisioning its importance, the proposed DG program investigates a novel framework of coded wireless multicast, called Scalable source coding over superposition coding (SSC-SPC), which aims to create multi-resolution transmissions via an intelligent mapping between the source and channel coding. Specifically, we plan to tackle the problems of SSC-SPC multicast in a number of interesting scenarios, including a logical SSC-SPC transmission paradigm (called SSC-L-SPC) that enables simple and standard compatible design at the receivers, as well as SSC-SPC multicast over single- and multi-relay networks in the decode-and-forward (DF), amplify-and-forward (AF), non-orthogonal AF (NAF) fashion, respectively. They are considered missing pieces in the literature and interesting to the research community. The research results are expected to gain deep understanding on the performance of the SSC-SPC transmissions under various network infrastructure supports and solidly contribute to the state-of-the-art of the related research. ***Based on the proposed research topics, the proposed DG program accommodates abundant research activities, by which the participated students, including constantly two PhD students and a summer co-op student, will receive sufficient training in terms of network architecture design, system and problem formulation, optimization, and case studies/simulation. They will not only learn the academic research skills, but also obtain knowledge on industry standardization progress such as Multimedia Broadcast Multicast Services (MBMS) of 3GPP and Multicast-broadcast single-frequency network (MBSFN) in LTE.**