CAREER: An Integrated Digital Signal Processing Framework for Optimized Wireless Communications

职业:用于优化无线通信的集成数字信号处理框架

基本信息

  • 批准号:
    9875805
  • 负责人:
  • 金额:
    $ 21万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1999
  • 资助国家:
    美国
  • 起止时间:
    1999-07-01 至 2004-06-30
  • 项目状态:
    已结题

项目摘要

Abstract for CCR-9875805Wireless communication systems, particularly code-divisionmultiple access (CDMA) systems, are vital building blocks of the rapidlyevolving global information infrastructure. Digital signal processing (DSP)is playing a central role in wireless communications due to the increasinglysophisticated processing required in the physical network layer. The majorDSP challenges in CDMA system design stem from three key factors thatdominate the processing in the physical layer: (1) channel propagationdynamics; (2) multiaccess interference; and, (3) the inherent complexity ofthe DSP algorithms. The proposed research has two primary goals for meetingthe physical layer CDMA challenges:* Development of DSP tools and theory to launch an integrated attackon time-varying multipath dispersion, time-varying multipath fading, andmultiaccess interference.* Development of design strategies for practical high-performancesystems that optimize the complexity versus performance tradeoffs inherentin the DSP techniques.A new unified framework based on DSP in canonical multipath-Dopplercoordinates will be developed to meet these goals. The canonical coordinatesare defined by a fixed basis that is derived from a fundamentalcharacterization of channel propagation dynamics in terms of certain discretemultipath delays and Doppler shifts of the signaling waveform. The canonicalcoordinates naturally connect the key physical layer facets and thusfacilitate a unified DSP development. First, all processing relating topropagation effects can be directly performed in the coordinates. Second,the same coordinates provide a canonical subspace-based representationof the desired signal and multiaccess interference. Finally, the simple computation and subspace structure of the coordinates affords a direct handle on complexity. At the heart of the research is a particularly promisinginnovation: whereas existing interference suppression techniques treatpropagation effects as a nuisance, canonical coordinates exploit the subspacestructure induced by channel effects for enhanced interference suppression.The educational objectives of the program include integrated curriculumdevelopment in DSP and communications, a thematic approach to teaching tofacilitate conceptual thinking, and leveraging of technology to extend theboundaries of traditional instruction and learning.
摘要CCR-9875805无线通信系统,特别是码分多址(CDMA)系统,是快速发展的全球信息基础设施的重要组成部分。由于物理网络层所需的处理越来越复杂,数字信号处理(DSP)在无线通信中扮演着核心角色。 CDMA系统设计中DSP的主要挑战来自于控制物理层处理的三个关键因素:(1)信道传播动态;(2)多址干扰;(3)DSP算法的固有复杂性。提出的研究有两个主要目标,以满足物理层CDMA的挑战:* 开发DSP工具和理论,对时变多径色散、时变多径衰落和多址干扰进行综合攻击。* 开发实用的高性能系统的设计策略,优化DSP技术固有的复杂性与性能的权衡。一个新的统一的框架,基于DSP在规范的多径多普勒坐标将被开发,以满足这些目标。规范coordinatesare定义了一个固定的基础,这是从一个fundamentalcharacterization的信道传播动力学在某些discrete多径延迟和多普勒频移的信令波形。标准坐标自然地连接了关键的物理层方面,从而促进了统一的DSP开发。首先,所有与传播效应相关的处理都可以直接在坐标系中进行。其次,相同的坐标提供了期望信号和多址干扰的基于子空间的规范表示。最后,简单的计算和坐标的子空间结构提供了对复杂性的直接处理。这项研究的核心是一项特别有前途的创新:现有的干扰抑制技术将传播效应视为滋扰,而规范坐标则利用信道效应引起的子空间结构来增强干扰抑制。该计划的教育目标包括DSP和通信的综合开发,促进概念思维的主题教学方法,and leveraging杠杆of technology技术to extend延伸thebounds边界of traditional传统instruction教学and learning学习.

项目成果

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Akbar Sayeed其他文献

Akbar Sayeed的其他文献

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{{ truncateString('Akbar Sayeed', 18)}}的其他基金

Intergovernmental Mobility Assignment
政府间流动分配
  • 批准号:
    1817462
  • 财政年份:
    2017
  • 资助金额:
    $ 21万
  • 项目类别:
    Intergovernmental Personnel Award
PFI:AIR - TT: Beamspace MIMO Transceiver Prototype for Millimeter-Wave Gigabit Mobile Wireless Links
PFI:AIR - TT:用于毫米波千兆位移动无线链路的 Beamspace MIMO 收发器原型
  • 批准号:
    1444962
  • 财政年份:
    2014
  • 资助金额:
    $ 21万
  • 项目类别:
    Standard Grant
EARS: Beamspace Communication Techniques and Architectures for Enabling Gigabit Mobile Wireless at Millimeter-Wave Frequencies
EARS:用于在毫米波频率下实现千兆位移动无线的波束空间通信技术和架构
  • 批准号:
    1247583
  • 财政年份:
    2012
  • 资助金额:
    $ 21万
  • 项目类别:
    Standard Grant
EAGER: A Novel Hybrid Analog-Digital Architecture for Optimum Agile Wireless Communication Using Discrete Lens Arrays
EAGER:一种新型混合模数架构,使用分立透镜阵列实现最佳敏捷无线通信
  • 批准号:
    1052628
  • 财政年份:
    2010
  • 资助金额:
    $ 21万
  • 项目类别:
    Standard Grant
Communication over Dispersive Wireless Channels: Theory and Methods Based on Physical Principles
分散无线信道通信:基于物理原理的理论和方法
  • 批准号:
    0431088
  • 财政年份:
    2004
  • 资助金额:
    $ 21万
  • 项目类别:
    Continuing Grant
ITR/SI: Collaborative Research: Integrated Signal Processing and Antenna Array Design for Wireless Diversity Links
ITR/SI:合作研究:无线分集链路的集成信号处理和天线阵列设计
  • 批准号:
    0113385
  • 财政年份:
    2001
  • 资助金额:
    $ 21万
  • 项目类别:
    Standard Grant

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