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    • 4. 发明申请
    • Method and device for modulation recognition of digitally modulated signals with multi-level magnitudes
    • 用于多电平量程数字调制信号调制识别的方法和装置
    • US20060072679A1
    • 2006-04-06
    • US10956603
    • 2004-10-01
    • Ching-Yung ChenChih-Chun Feng
    • Ching-Yung ChenChih-Chun Feng
    • H04L5/12
    • H04L27/0012H04B1/0003H04L27/0008
    • A modulation recognition method and device for digitally modulated signals with multi-level magnitudes are provided. The modulation recognition method includes selecting plural of quantization sizes used to construct plural of statistic histograms related to the magnitude of a sequence of data, setting up an off-line processing to extract plural of useful feature patterns for each modulation type of interest, receiving a sequence of samples of the modulated object signal and constructing plural of statistic histograms related to the magnitude of these samples, and adopting a hierarchical classification method for modulation recognition. It can be applied to the adaptive-modulation communication system, software defined radio, digital broadcasting systems and military communication systems. It can also be integrated with modulation recognition techniques for other types of modulated signals to function in a universal demodulator. It recognizes digitally modulated signals of multi-level magnitudes with low computational complexity in advancing the efficiency of communication systems.
    • 提供了一种具有多级数值的数字调制信号的调制识别方法和装置。 调制识别方法包括:选择多个量化大小,用于构建与数据序列的幅度相关的多个统计量化直方图,设置离线处理以提取每个感兴趣的调制类型的有用特征图案,接收一个 调制对象信号的样本序列,并构建与这些样本的幅度有关的多个统计直方图,并采用分层分类方法进行调制识别。 它可以应用于自适应调制通信系统,软件定义无线电,数字广播系统和军事通信系统。 它也可以与用于其他类型的调制信号的调制识别技术集成在通用解调器中起作用。 它在提高通信系统效率的同时,以低计算复杂度识别多电平量级的数字调制信号。
    • 5. 发明授权
    • Method and device for modulation recognition of digitally modulated signals with multi-level magnitudes
    • 用于多电平量程数字调制信号调制识别的方法和装置
    • US07379507B2
    • 2008-05-27
    • US10956603
    • 2004-10-01
    • Ching-Yung ChenChih-Chun Feng
    • Ching-Yung ChenChih-Chun Feng
    • H04B7/02
    • H04L27/0012H04B1/0003H04L27/0008
    • A modulation recognition method and device for digitally modulated signals with multi-level magnitudes are provided. The modulation recognition method includes selecting plural quantization sizes used to construct plural statistic histograms related to the magnitude of a sequence of data, setting up an off-line processing to extract plural useful feature patterns for each modulation type of interest, receiving a sequence of samples of a modulated object signal and constructing plural statistic histograms related to the magnitude of these samples, and adopting a hierarchical classification method for modulation recognition. It can be applied to the adaptive-modulation communication system, software defined radio, digital broadcasting systems and military communication systems. It can also be integrated with modulation recognition techniques for other types of modulated signals to function in a universal demodulator. It recognizes digitally modulated signals of multi-level magnitudes with low computational complexity in advancing the efficiency of communication systems.
    • 提供了一种具有多级数值的数字调制信号的调制识别方法和装置。 调制识别方法包括:选择多个量化大小,用于构建与数据序列的幅度有关的多个统计直方图,设置离线处理以提取每个感兴趣的调制类型的多个有用特征图案,接收样本序列 并构造与这些样本的幅度有关的多个统计直方图,并采用分层分类方法进行调制识别。 它可以应用于自适应调制通信系统,软件定义无线电,数字广播系统和军事通信系统。 它也可以与用于其他类型的调制信号的调制识别技术集成在通用解调器中起作用。 它在提高通信系统效率的同时,以低计算复杂度识别多电平量级的数字调制信号。
    • 10. 发明授权
    • Apparatus and method for inter-carrier interference self-cancellation and inter-carrier interference reconstruction and cancellation
    • 载波间干扰自消除和载波间干扰重构和消除的装置和方法
    • US07720183B2
    • 2010-05-18
    • US11646771
    • 2006-12-28
    • Ming-Chien TsengChorng-Ren SheuChing-Yung Chen
    • Ming-Chien TsengChorng-Ren SheuChing-Yung Chen
    • H03D1/04
    • H04L27/2647H04L5/0007H04L25/03159
    • A method for ICI self-cancellation and ICI reconstruction and cancellation is introduced. The method includes receiving input signals; receiving boundary information regarding a length q of an ISI-free region of the received signals; selecting a plurality of ISI-free signals from the received signals; combining the plurality of ISI-free signals to provide combined signals z(n); performing FFT operations on the combined signals to provide output signals Z(k); reconstructing ICI based on the output signals Z(k) and the length q of the ISI-free region of the input signals r(n) in order to provide an estimated ICI; subtracting the estimated ICI from the output signals Z(k) to provide a cancelled signal W(k); performing a channel estimation for the cancelled signal W(k); equalizing the cancelled signal W(k) to provide an equalized signal; and de-mapping the equalized signal to provide a de-mapped signal d(k).
    • 介绍了ICI自消除和ICI重建和取消的方法。 该方法包括接收输入信号; 接收关于接收信号的无ISI区域的长度q的边界信息; 从所接收的信号中选择多个无ISI信号; 组合多个无ISI信号以提供组合信号z(n); 对组合信号进行FFT运算以提供输出信号Z(k); 基于输入信号r(n)的输出信号Z(k)和ISI自由区域的长度q来重建ICI,以便提供估计的ICI; 从输出信号Z(k)减去估计的ICI以提供消除信号W(k); 对取消信号W(k)进行信道估计; 均衡消除信号W(k)以提供均衡信号; 并解映射均衡信号以提供去映射信号d(k)。