Collaborative Research: Subspace Expansions for Optimization of Transceivers in Multiple Access Communication

协作研究：多址通信中收发器优化的子空间扩展

• 批准号: 0515192
• 负责人: Louis Scharf
• 金额: --
• 依托单位: Colorado State University
• 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: 2005-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0515192&HistoricalAwards=false
• 关键词: Collaborative; Research; Subspace; Expansions; Optimization

This research is directed to subspace signal processing for space-time processing of wireless transmissions to and from the internet, between fixed computers, or between computers and peripherals. It applies particularly to wireless channels that spread signals in space and time, thereby forcing the transceiver to adaptively trade off array and filter gain for diversity in order to achieve satisfactory performance.The research (i) continues our exploitation of the connection between optimization theory and filtering; (ii) advances the state-of-the-art in reduced rank filter design for space-time adaptive processing (STAP); and (iii) applies the results to space-time wireless communication, imaging, and beamforming. The aim is to couple transmitter design to receiver design in wireless communication systems by showing how code design and power control directly influence the cost, complexity and convergence of receivers within a wireless network. The project consists of these elements: (i) downlink cooperative transceiver optimization, using code design, power control, and the vector conjugate gradient Wiener filter to achieve warp convergence; (ii) uplink transceiver optimization, using the matrix conjugate gradient Wiener filter to achieve convergence in one step.

这项研究针对子空间信号处理，用于用于无线传输往返互联网，固定计算机之间或计算机和外围设备之间的无线传输。它特别适用于在时空上传播信号的无线渠道，从而迫使收发器适应差异和过滤器获得多样性以实现令人满意的性能。研究（i）继续我们对优化理论和过滤之间的联系的利用； （ii）推进了时空自适应处理（stap）的降低级别滤波器设计中最新的级别。 （iii）将结果应用于时空无线通信，成像和波束形成。 目的是通过展示代码设计和电源控制如何直接影响无线网络中接收器的成本，复杂性和收敛性，将发射器设计与接收器设计相结合。该项目由以下元素组成：（i）使用代码设计，电源控制和矢量偶联梯度Wiener滤波器的下行链路合作收发器优化，以实现翘曲收敛； （ii）使用矩阵偶联梯度WIENER滤波器在一个步骤中实现收敛性，上行链路收发器优化。