Collaborative Research: A Universal Cooperative Communication System-On-Chip

综合、混合和复杂系统刘游健，科罗拉多大学，黄新明，伍斯特理工学院，王中峰，俄勒冈州立大学合作研究：芯片上的通用协作通信系统知识价值：2001年9月11日恐怖袭击和卡特里娜飓风等事件使抗灾和互操作通信成为国家优先事项。当第一响应者聚集在灾难站点时，即使用户之间出现干扰，容灾通信网络也必须工作。随着用户密度的增加，传统的干扰避免方法提供的每个用户的容量递减。协作通信可以利用干扰来解决这一问题，从而节省网络总传输功率。然而，现有的协作通信算法的性能随其所设计的信道统计量的不同而有很大的差异，并且当信道优于传输速率时，会浪费接收到的互信息，或者当信道无法支持传输速率时，会出现中断。本研究探讨了一种由单个或多个天线节点组成的协作通信系统的设计，该系统可以在不同的信道条件下工作，从而消除了中断，并且不会浪费接收到的相互信息。该项目的目标是将信息理论解决方案一直应用于单芯片实现，以推进通信和编码以及片上系统（SoC）的实现。该项目解决了三个领域交叉的研究问题：(i)通信理论，（ii）超大规模集成（VLSI）信号处理，（iii）片上系统架构和设计。更广泛的影响：该项目推动了跨学科通信系统的研究和设计。片上系统实现在未来的固定或移动自组织无线网络中具有应用潜力，能够根据第一响应者的要求在强干扰下工作，有可能加强国家安全和应急准备。本项目提供了一个教育机会，让学生接触到通信系统理论和实践的各个方面。它还将通过一个综合研究和教育项目，让本科生和来自代表性不足群体的学生参与进来。

Integrative, Hybrid and Complex SystemsYoujian Liu, University of Colorado at BoulderXinming Huang, Worcester Polytechnic InstituteZhongfeng Wang, Oregon State UniversityCollaborative Research: A Universal Cooperative Communication System-on-ChipIntellectual Merit: Events such as the terrorist attacks of September 11, 2001 and Hurricane Katrina have made disaster-tolerant and interoperable communications a national priority. A disaster-tolerant communication network must work despite interference among users as arises when first responders converge at a disaster site. Conventional interference avoidance methods offer diminishing capacity per user as the user density increases. Cooperative communication can solve the problem by taking advantage of the interference, thus saving total network transmit power. However, the performance of existing cooperative communication algorithms vary significantly with the channel statistics for which they are designed and, also, waste received mutual information when the channel is better than the transmission rate or suffer an outage when the channel cannot support the transmission rate. This research explores the design of a cooperative communication system, composed of single or multiple antenna nodes, that works across varying channel conditions in the sense that outage is eliminated and received mutual information is not wasted. The goal of the project is to take an information theoretic solution all the way to a single-chip implementation to advance communication and coding, as well as system-on-chip (SoC) implementation. The project tackles research problems that are at the intersection of three areas: (i) communication theory, (ii) very large-scale integration (VLSI) signal processing, and (iii) system-on-chip architecture and design.Broader Impact: The project advances interdisciplinary communication system research and design. The system-on-chip realization has the potential for application in future fixed or mobile ad-hoc wireless networks with the capability to work under strong interference as required by first responders, potentially strengthening national security and emergency preparedness. The proposed project provides an educational opportunity to expose students to the diverse aspects of communication system theory and practice. It will also involve undergraduate students and students from underrepresented groups through an integrated research and education program.