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    Receiver having decisional feedback equalizer with remodulation and related methods
    1.
    发明授权
    Receiver having decisional feedback equalizer with remodulation and related methods 失效
    接收机具有重新调制和相关方法的决策反馈均衡器

    公开(公告)号：US07418061B2

    公开(公告)日：2008-08-26

    申请号：US11599334

    申请日：2006-11-15

    申请人： Thomas D. Kwon ,  Jonathan S. Min ,  Fang Lu ,  Thomas J. Kolze

    发明人： Thomas D. Kwon ,  Jonathan S. Min ,  Fang Lu ,  Thomas J. Kolze

    IPC分类号： H04L27/00 ,  H04L1/00

    CPC分类号： H04L25/03273 ,  H04L25/03057 ,  H04L27/3827 ,  H04L2025/0349 ,  H04L2027/003 ,  H04L2027/004 ,  H04L2027/0055 ,  H04L2027/0061

    摘要： A receiver includes a filter stage that receives, filters, and equalizes a received signal, and a decisional feedback loop coupled to the filter stage that receives and processes a signal output from the filter stage using remodulation. The decisional feedback loop includes a converter that generates a baseband signal, a detector that generates a decision signal, a restorative signal generator that generates a restorative signal using remodulation, and a carrier loop that generates a frequency correction signal and provides a frequency-offset estimate. The restorative signal and the frequency correction signal are provided to the converter to compensate for inter-symbol interference. The presented “remodulation” technique decouples interaction between the carrier loop, the pre-filters, and the equalizer of the restorative signal generator, providing an architecture that is more stable and significantly faster than conventional architectures.

    摘要翻译： 接收机包括接收，滤波和均衡接收信号的滤波器级，以及耦合到滤波器级的判决反馈回路，其接收并处理从再过滤阶段输出的信号。 判决反馈回路包括产生基带信号的转换器，产生判定信号的检测器，使用再调制产生恢复信号的恢复信号发生器，以及产生频率校正信号并提供频偏估计的载波环路 。 将修复信号和频率校正信号提供给转换器以补偿符号间干扰。 所提出的“再调制”技术解耦了载体环路，预滤波器和恢复信号发生器的均衡器之间的相互作用，提供比传统架构更稳定和显着更快的架构。

    System and method for performing ranging in a cable modem system
    5.
    发明授权
    System and method for performing ranging in a cable modem system 有权
    用于在电缆调制解调器系统中执行测距的系统和方法

    公开(公告)号：US08085835B2

    公开(公告)日：2011-12-27

    申请号：US12538600

    申请日：2009-08-10

    申请人： Jonathan S. Min ,  Fang Lu

    发明人： Jonathan S. Min ,  Fang Lu

    IPC分类号： H04B1/38

    CPC分类号： H04L25/03343 ,  H04J3/0682 ,  H04L5/023 ,  H04L27/34 ,  H04L2027/002 ,  H04W52/54

    摘要： The present invention provides a system and method for performing ranging operations in a able modern system. In accordance with embodiments of the present invention, transmission times, transmission power levels, transmission carrier frequencies, and pre-equalization parameters are adjusted to provide for robust operation of the cable modem system. More particularly, iterative processing steps are used to provide coefficient ordering, scaling, and aligning between the multiple cable modems and the cable modem termination system present in a cable modern system.

    摘要翻译： 本发明提供一种用于在电缆调制解调器系统中执行测距操作的系统和方法。 根据本发明的实施例，调整传输时间，传输功率电平，传输载波频率和预均衡参数以提供电缆调制解调器系统的鲁棒操作。 更具体地，使用迭代处理步骤来提供多个电缆调制解调器和存在于电缆调制解调器系统中的电缆调制解调器终端系统之间的系数排序，缩放和对准。

    System for detecting collisions in a shared communications medium
    7.
    发明授权
    System for detecting collisions in a shared communications medium 有权
    用于检测共享通信介质中的冲突的系统

    公开(公告)号：US07626996B2

    公开(公告)日：2009-12-01

    申请号：US11489525

    申请日：2006-07-20

    申请人： Bruce J. Currivan ,  Jonathan S. Min ,  Fang Lu

    发明人： Bruce J. Currivan ,  Jonathan S. Min ,  Fang Lu

    IPC分类号： H04L12/413

    CPC分类号： H04L12/44 ,  H04L12/2801

    摘要： A system for detecting collisions in a shared communications medium, such as a TDMA medium, includes a receive path adapted to generate a first intermediate signal, a second intermediate signal, and a data symbol sequence from an input signal. A preamble detection module generates a correlation metric from the first intermediate signal. A power measurement module generates a power indication signal from the second intermediate signal. A noise measurement module generates a noise indication signal from the second intermediate signal and the data symbol sequence. A processing module is adapted to characterize the input signal as a collision for certain values of correlation metric, power indication signal, and noise indication signal.

    摘要翻译： 用于检测诸如TDMA介质的共享通信介质中的冲突的系统包括适于从输入信号生成第一中间信号，第二中间信号和数据符号序列的接收路径。 前导码检测模块从第一中间信号生成相关度量。 功率测量模块从第二中间信号产生功率指示信号。 噪声测量模块从第二中间信号和数据符号序列产生噪声指示信号。 处理模块适于将输入信号表征为相关度量，功率指示信号和噪声指示信号的某些值的冲突。