CIF:Small: Collaborative Research: Minimum Energy Communications in Wireless Networks

CIF:Small：合作研究：无线网络中的最低能量通信

• 批准号: 1017829
• 负责人: Zixiang Xiong
• 金额: $ 21.84万
• 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: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1017829&HistoricalAwards=false
• 关键词: CIF; Small; Collaborative; Research; Minimum

This project aims to answer a fundamental question in wireless networking: what is the energy needed to transmit one bit of information over a wireless network? And the related question: how can practical networks be designed to come close to this limit? The motivation is to save energy. It is evident that there is a strong current interest in energy conservation. Currently it is estimated that consumer electronics account for 11% of total residential electricity consumption in the US. While this is not all used on communications, as most devices have wireless capability, wireless communications could account for a significant part of this energy consumption. Clearly, if this energy consumption can be cut in half, the saving is significant. In fact, preliminary results show that by optimizing the signaling, energy consumption in wireless communications can be reduced much more than 50%.As is well known, there are few networks where the exact Shannon capacity has been found. The research therefore approaches the theoretical part of this problem in different ways. For some networks, the minimum energy per bit can be found even if the exact capacity cannot be found. When the exact minimum energy per bit cannot be found, approximations to the minimum energy per bit are sought in the form of a figure within a certain number of dB that is universal over a certain class of networks. A key part of the research will be to look at networks with correlated information and distortion. Joint source-channel coding can reduce the energy consumption beyond what a separate approach can provide. The theoretical approach will be combined with practical coding methods.

该项目旨在回答无线网络中的一个基本问题：通过无线网络传输一比特信息所需的能量是多少？与此相关的问题是：如何设计出接近这个极限的实用网络？动机是节省能源。很明显，目前人们对节能有着强烈的兴趣。目前，据估计，消费电子产品占美国住宅总用电量的11%。虽然这并不完全用于通信，但由于大多数设备都具有无线功能，因此无线通信可能占这种能源消耗的很大一部分。显然，如果这种能源消耗可以减少一半，节省是显着的。实际上，初步的研究结果表明，通过优化信令，无线通信中的能量消耗可以降低50%以上。众所周知，很少有网络能够精确地找到香农容量，因此本研究从不同的角度探讨了这一问题的理论部分。对于某些网络，即使无法找到精确的容量，也可以找到每比特的最小能量。当无法找到精确的每比特最小能量时，可以在一定dB数内以数字的形式寻求每比特最小能量的近似值，该数字在某类网络上是通用的。研究的一个关键部分将是研究具有相关信息和失真的网络。联合信源信道编码可以降低能量消耗，超过单独的方法可以提供。理论方法将与实际的编码方法相结合。