Collaborative Research: Spectrum Efficient Waveform Design with Application to Wireless Networks

合作研究：频谱效率波形设计及其在无线网络中的应用

• 批准号: 1247848
• 负责人: Qilian Liang
• 金额: $ 19万
• 依托单位: University of Texas at Arlington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1247848&HistoricalAwards=false
• 关键词: Collaborative; Research; Spectrum; Efficient; Waveform

Spectrum efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is utilized. In this project, innovative spectrum efficient waveform designs are studied towards narrower mainlobe and lower sidelobe in spectrum. It has been recognized that judicious use of properly designed waveforms, coupled with advanced receiver strategies, is fundamental to fully utilizing the capacity of the electromagnetic spectrum. This project seeks innovative approaches on nested and co-prime samplers for spectrum efficiency, and subsequently applies it to wireless networks. Different waveforms designs and diversities are studied based on nested and co-prime samplers. Co-prime samplers are used for Multi-Input Multi-Output communication system. In the application to spectrum efficient wireless networks, nodes exchange information over a common wireless channel. Under different traffic scenarios and different constraints, e.g., bandwidth and signal to noise and interference ratio, the amount of data exchanged among these nodes may vary. A key question then is how the throughput capacity of wireless network improves with the new waveform design schemes and different network setup and how it grows with the number of nodes in the network. This project seeks to help reach the nation's broadband goals and the larger objective of alleviating growing pressure on limited spectrum resources. This project will attract minority and woman students to participate in the project.

频谱效率是指在特定通信系统中，在给定带宽上可以传输的信息速率。它是有限频谱利用效率的度量。本计画针对频谱上窄主瓣与低副瓣之创新频谱效率波形设计进行研究。人们已经认识到，明智地使用适当设计的波形，加上先进的接收机策略，是充分利用电磁频谱容量的基础。该项目寻求创新的嵌套和互质采样器的频谱效率的方法，并随后将其应用到无线网络。基于嵌套和互质采样器，研究了不同的波形设计和调制。互质采样器用于多输入多输出通信系统。在频谱高效无线网络的应用中，节点通过公共无线信道交换信息。在不同的交通场景和不同的约束条件下，例如，带宽和信噪比以及干扰比，在这些节点之间交换的数据量可以变化。一个关键的问题是无线网络的吞吐量容量如何随着新的波形设计方案和不同的网络设置而提高，以及它如何随着网络中节点的数量而增长。该项目旨在帮助实现国家的宽带目标，以及减轻有限频谱资源日益增长的压力的更大目标。该项目将吸引少数民族学生和女学生参加。