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: 0729152
• 负责人: Anders Host-Madsen
• 金额: $ 15.12万
• 依托单位: University of Hawaii
• 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=0729152&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.

无线网络中资源有限的无线网络性能中的容量和编码受网络可用的资源的限制。无线网络使用的基本物理资源是带宽和能源。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。这项研究分别考虑了这两种资源，并通过专注于一个资源来定义带宽有限制度和能源有限制度。在每个制度中，调查人员建议将重点放在与香农容量相关的一些绩效衡量标准上，找到这些措施的界限，并设计实用的代码以接近这些界限。对两种资源进行处理，在许多情况下，对两种资源进行处理，以获得精确的能力结果，而不是数值的上限和下限。具体而言，这项研究的目的是1）找到用于性能有限的无线网络的基本界限，2）开发网络确定性能力的新概念，3）在指导实用代码设计中直接获得的信息理论结果，4）在代码设计中采用源channel编码，以及在代码设计中进行编码，以及5）将源编码方法扩展到Correlated sourcess。