Blind Adaptive Fractionally-Spaced Linear Equalizer Behavior

盲自适应分数间隔线性均衡器行为

基本信息

  • 批准号:
    9509011
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1995
  • 资助国家:
    美国
  • 起止时间:
    1995-08-01 至 1999-07-31
  • 项目状态:
    已结题

项目摘要

The central theme of this research is the development of a fuller theoretical description of the behavior of memoryless-error- function (or Bussgang) type blind equalization algorithms, in particular CMA, as used in practice with finite-length, fractional spacing, higher-order (non-constant modulus, non-uniformly distributed) source constellations, (deterministic and stochastic) correlated source time series, and modest channel noise. The initial target is the behavior of fractionally-spaced CMA with a correlated (or periodic) source, which appears capable of causing misbehavior in practice. We plan to use analytical tools from topologically based, algebraic-geometry (in particular Bernstein's theorem, relaxation methods, and Morse theory) non typically associated with the study of adaptive filters in addition to averaging theory tools popular in adaptive systems analysis. The ultimate intent is to convert an expanded theory into situation dependent design guidelines for stepsize, length, fractional- spacing, initialization selection, and failure recovery tricks for the use of CMA as a start-up scheme (with a subsequent switch to decision-direction) for high data throughput applications. We plan to translate our analytical advances on CMA to fractionally-spaced realizations of other blind equalizer algorithms of the memoryless error function class (including refinements to CMA), for which actual operating data can be obtained industrially as for CMA. We also plan to use our behavior insights into CMA to help provide fair comparisons on actual operating data to competing schemes such as symbol-spaced decision feedback equalizers and similar complexity algorithms based on second-order correlation statistics of single-input, multiple- output models of fractionally-spaced equalization.
本研究的中心主题是发展对无记忆误差函数(或Bussgang)型盲均衡算法行为的更全面的理论描述,特别是CMA,在有限长度,分数间距,高阶(非恒定模量,非均匀分布)源星群,(确定性和随机)相关源时间序列和适度信道噪声的实践中使用。初始目标是具有相关(或周期性)源的分数间隔CMA的行为,这在实践中可能会导致不当行为。除了自适应系统分析中流行的平均理论工具外,我们计划使用基于拓扑的、代数几何的(特别是伯恩斯坦定理、松弛方法和莫尔斯理论)非典型地与自适应滤波器研究相关的分析工具。最终目的是将扩展的理论转换为基于情况的设计指南,用于步长、长度、分数间距、初始化选择和故障恢复技巧,以便将CMA用作高数据吞吐量应用程序的启动方案(随后切换到决策方向)。我们计划将我们在CMA上的分析进展转化为其他无记忆误差函数类的盲均衡器算法的分数间隔实现(包括对CMA的改进),这样就可以获得CMA的实际运行数据。我们还计划利用我们对CMA的行为洞察来帮助对实际操作数据与竞争方案(如符号间隔决策反馈均衡器和基于单输入多输出分数间隔均衡模型的二阶相关统计的类似复杂性算法)进行公平比较。

项目成果

期刊论文数量(0)
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科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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C. Richard Johnson其他文献

Interplay Betweeen Recursive System Identification and Adaptive Filtering in Communication Systems
  • DOI:
    10.1016/s1474-6670(17)47690-7
  • 发表时间:
    1994-07-01
  • 期刊:
  • 影响因子:
  • 作者:
    C. Richard Johnson
  • 通讯作者:
    C. Richard Johnson
CMA fractionally spaced equalizers: Stationary points and stability under i.i.d. and temporally correlated sources
CMA 分数间隔均衡器:独立同分布下的驻点和稳定性
  • DOI:
    10.1002/(sici)1099-1115(199803)12:2<135::aid-acs484>3.0.co;2-z
  • 发表时间:
    1998
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J.P. LeBlanc;I. Fijalkow;C. Richard Johnson
  • 通讯作者:
    C. Richard Johnson

C. Richard Johnson的其他文献

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{{ truncateString('C. Richard Johnson', 18)}}的其他基金

Counting Van Gogh and Vermeer
细数梵高和维米尔
  • 批准号:
    1048352
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Blind Adaptive Channel Shortening
盲自适应信道缩短
  • 批准号:
    0310023
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Continuing grant
US-France Cooperative Research: Exchange on Adaptive Telecommunication Engineering
美法合作研究:自适应电信工程交流
  • 批准号:
    0233127
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
GOALI: Adaptive DSP in Emerging Communication Systems
GOALI:新兴通信系统中的自适应 DSP
  • 批准号:
    9802375
  • 财政年份:
    1998
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Adaptive Systems for Equalization of Wireless Multiple Access Communication Channel
无线多址通信信道均衡的自适应系统
  • 批准号:
    9811297
  • 财政年份:
    1998
  • 资助金额:
    --
  • 项目类别:
    Continuing grant
GOALI:Adaptive Active Noise Control: Stability Analysis, Algorithm Development, and Efficient Implementation
目标:自适应主动噪声控制:稳定性分析、算法开发和高效实施
  • 批准号:
    9528363
  • 财政年份:
    1996
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Qualitative Classification of the Behavior of Poorly ExcitedAdaptive Feedback Systems
不良兴奋自适应反馈系统行为的定性分类
  • 批准号:
    9022785
  • 财政年份:
    1991
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Blind Adaptive Channel Equalization for QAM Source Signals
QAM 源信号的盲自适应信道均衡
  • 批准号:
    8921003
  • 财政年份:
    1990
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
U.S.-Australia Cooperative Research: Development and Appli- cation of Robust Adaptive Control Theory (Systems and Opera-tion Research)
美澳合作研究:鲁棒自适应控制理论的发展与应用(系统与运行研究)
  • 批准号:
    8513400
  • 财政年份:
    1986
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Convergence and Robustness Study of Sign-Sign Adaptive IIR Filters
符号自适应IIR滤波器的收敛性和鲁棒性研究
  • 批准号:
    8608787
  • 财政年份:
    1986
  • 资助金额:
    --
  • 项目类别:
    Continuing grant

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