Collaborative Research: Signal Processing in Wireless Ad Hoc Networking

合作研究：无线自组织网络中的信号处理

• 批准号: 0514938
• 负责人: Hongbin Li
• 金额: $ 15.94万
• 依托单位: Stevens Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0514938&HistoricalAwards=false
• 关键词: Collaborative; Research; Signal; Processing; Wireless

Collaborative Research: Signal Processing in Wireless Ad Hoc NetworkingProject AbstractMobile ad hoc networks (MANETs) are highly desirable in areas/situations where base stations are unavailable or too expensive to establish. Lack of infrastructure, intermittent connectivity, and frequent changes in topology due to mobility present significant challenges in the research of MANETs. While most prior efforts were primarily focused on the networking layer, there are compelling reasons supported by recent information theory and signal processing studies which indicate that an integrated approach seeking cross-layer diversity exploitation can lead to more fruitful results. This project follows that path.The objective of this project is to develop a framework of communication, networking, and signal processing techniques for MANETs by exploiting node cooperation at the physical, medium access, and networking layers. Three different but intertwined research directions are involved, Specifically, the first is to develop a distributive modulation theory over wireless relay channels, covering investigation of the characteristics of wireless relay channels, modulation and detection for coherent, differential and non-coherent communications for relay networks, power allocation and placement of relay nodes. The second direction is to develop bandwidth-efficient and delay-tolerant cooperative coding schemes to address several issues that are unique in coded cooperation, including bandwidth expansion caused by repetitive transmissions from relays, node asynchronism due to distributive locations of relays, and scalability (viz., the capability to degrade gracefully when some cooperating nodes that implement a distributive code fail because of fading). The third direction is to explore networking by parallel relays and develop networking protocols that take into account the realistic characteristics of radio signals and provide a flexible framework for diversity exploitation.

协作研究：无线临时网络中的信号处理AbstractMobile Ad Hoc网络（MANETS）在基本站无法使用或太昂贵的领域/情况下非常需要。 缺乏基础设施，间歇性连通性以及由于流动性而导致的拓扑频繁变化在Manets研究中带来了重大挑战。 尽管大多数先前的努力主要集中在网络层上，但最近的信息理论和信号处理研究的支持，这表明寻求跨层的多样性利用的综合方法可以带来更富有成果的结果。 该项目遵循该路径。该项目的目的是通过利用物理，中等访问和网络层的节点合作来开发Manets的通信，网络和信号处理技术框架。 具体来说，涉及三个不同但相互交织的研究方向，首先是在无线继电器通道上开发分布式调制理论，涵盖对无线继电器渠道的特征，调制和检测的特征，用于相干，差分和非氧化通信的相关性通信，用于中继网络，power Network，Power Sertocation and Relay Nodes的功率分配和放置。 第二个方向是开发带宽效率和延迟的合作编码方案，以解决在编码合作中独特的几个问题，包括由继电器的重复传输引起的带宽扩展，节点异步，由于相关性的分配位置而引起的节点异步和可扩展性的分配能力在范围内进行了逐步划分，因此在某些方面具有较高的范围，因为该量子的范围是在某些方面的脱颖而出的，因为该范围是在某些方面的范围，因为该范围是在某些方面的范围，因为该范围是在某些方面的范围，因为该范围是在某些方面的范围，因此该量子均具有良好的作用。 第三个方向是通过并行继电器探索网络，并开发网络协议，以考虑无线电信号的现实特征，并为多样性开发提供灵活的框架。