Collaborative Research: Capacity and Coding in Resource-Limited Wireless Networks

合作研究：资源有限无线网络中的容量和编码

• 批准号: 0729149
• 负责人: Zixiang Xiong
• 金额: $ 14.88万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0729149&HistoricalAwards=false
• 关键词: Collaborative; Research; Capacity; Coding; Resource

Capacity and Coding in Resource-Limited Wireless NetworksPerformance of wireless networks is limited by the resources available in the network. The fundamental physical resources used by wireless networks are bandwidth and energy. Designing wireless networks is mainly a question of utilizing these resources in the most efficient way possible. This research considers the two resources separately and defines the bandwidth limited regime and the energy limited regime by focusing on one resource at a time. In each regime, the investigators propose to concentrate on a few measures of performance related to the Shannon capacity, find bounds for these measures, and design practical codes to approach these bounds.Treating the two resources separately makes it possible in many cases to obtain concise, exact capacity results rather than numerical upper and lower bounds. Specifically, this research aims to 1) find fundamental bounds for performance of resource-limited wireless networks, 2) develop a new concept of deterministic capacity of networks, 3) use obtained information-theoretic results directly in guiding practical code designs, 4) employ source-channel coding in code designs, and 5) extend the source-channel coding approach to networks with correlated sources.

资源有限的无线网络中的容量和编码无线网络的性能受到网络中可用资源的限制。无线网络使用的基本物理资源是带宽和能量。设计无线网络主要是以最有效的方式利用这些资源的问题。本研究分别考虑这两种资源，并通过一次关注一种资源来定义带宽限制机制和能量限制机制。在每个机制中，研究人员建议集中精力于与香农容量相关的一些性能衡量标准，找到这些衡量标准的界限，并设计实用代码来接近这些界限。分开处理这两种资源使得在许多情况下可以获得简洁的结果。 ，准确的容量结果而不是数字上限和下限。具体来说，本研究旨在 1) 找到资源有限无线网络性能的基本界限，2) 开发网络确定性容量的新概念，3) 直接使用获得的信息论结果来指导实际代码设计，4) 采用代码设计中的源通道编码，以及 5) 将源通道编码方法扩展到具有相关源的网络。