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    RECEIVER CONTROLLER
    3.
    发明申请
    RECEIVER CONTROLLER 有权
    接收器控制器

    公开(公告)号：US20170078131A1

    公开(公告)日：2017-03-16

    申请号：US15239505

    申请日：2016-08-17

    Applicant: NXP B.V.

    Inventor： Martin Kessel

    IPC: H04L27/26 ,  H04L25/03

    CPC classification number: H04L27/2649 ,  H04L25/03006 ,  H04L25/03019 ,  H04L27/2607 ,  H04L27/2663 ,  H04L27/2665 ,  H04L27/2666 ,  H04L27/2678 ,  H04L2025/03598

    Abstract: A receiver controller configured to control a receiver in receipt a signal comprising a series of time-consecutive symbols is disclosed. Each symbol includes an FFT window and a guard interval and the guard interval includes a cyclic prefix or postfix. The receiver controller is configured to control the receiver to acquire at least one signal parameter. The receiver controller is also configured to, based on a plurality of samples of the received signal, each sample having a predetermined sample length, determination of a plurality of correlation values based on pairs of the plurality of samples, said pairs of samples separated in time by a predetermined separation number of samples.

    Abstract translation: 公开了一种接收机控制器，被配置为控制接收机接收到包括一系列时间连续符号的信号。 每个符号包括FFT窗口和保护间隔，并且保护间隔包括循环前缀或后缀。 接收器控制器被配置为控制接收器以获取至少一个信号参数。 接收机控制器还被配置为：基于接收信号的多个样本，每个样本具有预定的样本长度，基于多个样本的对来确定多个相关值，所述时间序列分离的样本对 通过预定的分离数量的样品。

    PHASE ADJUSTMENT CIRCUIT FOR CLOCK AND DATA RECOVERY CIRCUIT
    5.
    发明申请
    PHASE ADJUSTMENT CIRCUIT FOR CLOCK AND DATA RECOVERY CIRCUIT 有权
    用于时钟和数据恢复电路的相位调整电路

    公开(公告)号：US20150188693A1

    公开(公告)日：2015-07-02

    申请号：US14142606

    申请日：2013-12-27

    Applicant: Stefano GIACONI ,  Mingming XU ,  Issy KIPNIS

    Inventor： Stefano GIACONI ,  Mingming XU ,  Issy KIPNIS

    IPC: H04L7/00 ,  H04L25/03 ,  H04L7/033

    CPC classification number: H04L25/03057 ,  H04L7/0041 ,  H04L7/0058 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/0332 ,  H04L7/0334 ,  H04L25/03025 ,  H04L2025/03598

    Abstract: Described are phase adjustment circuits for clock and data recovery circuits (CDRs). Systems and apparatuses may include an input to receive a serial data signal, an edge data tap to sample transition edges in the serial data signal for generating a data edge detection signal, a CDR circuit including a phase detector to receive the serial data signal and the data edge detection signal, and to output a phase lead/lag signal indicating the phase difference between the serial data signal and the data edge detection signal, and a phase adjustment circuit to generate phase lead/lag adjustment data. The CDR circuit is to output a recovered clock signal based, at least in part, on the phase lead/lag signal adjusted by the phase lead/lag adjustment data.

    Abstract translation: 描述了时钟和数据恢复电路（CDR）的相位调整电路。 系统和装置可以包括用于接收串行数据信号的输入端，边缘数据抽头以对串行数据信号中的过渡边缘进行采样以产生数据边缘检测信号; CDR电路，包括用于接收串行数据信号的相位检测器和 数据边缘检测信号，并输出指示串行数据信号和数据边缘检测信号之间的相位差的相位超前/滞后信号，以及产生相位超前/滞后调整数据的相位调整电路。 CDR电路至少部分地基于由相位超前/滞后调整数据调整的相位超前/滞后信号来输出恢复的时钟信号。

    WIRELESS COMMUNICATION APPARATUS
    6.
    发明申请
    WIRELESS COMMUNICATION APPARATUS 审中-公开
    无线通信设备

    公开(公告)号：US20140119308A1

    公开(公告)日：2014-05-01

    申请号：US14087875

    申请日：2013-11-22

    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

    Inventor： Eiji Mochida

    IPC: H04B7/08 ,  H04W72/04

    CPC classification number: H04B7/0842 ,  H04B7/0854 ,  H04L25/0232 ,  H04L25/03019 ,  H04L27/265 ,  H04L27/2663 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03598 ,  H04W72/04

    Abstract: A wireless communication apparatus including an MMSE combining processing unit that performs MMSE combining based on frequency domain received signals obtained by performing a discrete Fourier transform on received signals, the apparatus including an amount-of-phase-rotation estimating unit that estimates an amount of phase rotation occurring in the frequency domain received signals due to a shift in discrete Fourier transform timing of the received signals, and a reverse rotation unit that applies a reverse rotation of an amount of rotation corresponding to the amount of phase rotation estimated by the amount-of-phase-rotation estimating unit, to the frequency domain received signals, wherein the MMSE combining processing unit computes an MMSE weight based on the frequency domain received signals to which the reverse rotation has been applied by the reverse rotation unit, and performs MMSE combining.

    Abstract translation: 一种无线通信装置，包括：MMSE组合处理单元，其基于通过对接收到的信号执行离散傅立叶变换获得的频域接收信号进行MMSE组合，所述装置包括估计相位量的相位旋转估计单元 由于接收信号的离散傅里叶变换定时的移位而在频域接收信号中发生的旋转，以及反转旋转单元，其对与旋转量估计值相对应的相位旋转量相对应的旋转量进行反转 相位旋转估计单元，用于频域接收信号，其中MMSE组合处理单元基于由反向旋转单元施加了反向旋转的频域接收信号来计算MMSE权重，并执行MMSE组合。

    ADAPTIVE EQUALIZATION METHOD AND ADAPTIVE EQUALIZER
    7.
    发明申请
    ADAPTIVE EQUALIZATION METHOD AND ADAPTIVE EQUALIZER 有权
    自适应均衡方法和自适应均衡器

    公开(公告)号：US20130230090A1

    公开(公告)日：2013-09-05

    申请号：US13868623

    申请日：2013-04-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Rui Lv

    IPC: H04L25/03

    CPC classification number: H04L25/03885 ,  H04L25/0305 ,  H04L27/22 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03477 ,  H04L2025/03598 ,  H04L2025/03662 ,  H04L2025/037

    Abstract: The present disclosure relates to the field of network communication, and specifically discloses an adaptive equalization method, including: obtaining a first filtered signal according to a first filter coefficient; deciding the first filtered signal based on an original constellation map to obtain a first decision signal, and deciding the first filtered signal based on a level (n−1) constellation map to obtain a level (n−1) pseudo decision signal; if average energy of the level (n−1) error signal is less than a level (n−1) threshold, switching the level (n−1) constellation map to a level n constellation map; obtaining a second filter coefficient according to the update magnitude; obtaining a second filtered signal according to the second filter coefficient; and deciding the second filtered signal based on the original constellation map to obtain a second decision signal. Embodiments of the present disclosure also disclose an adaptive equalizer.

    Abstract translation: 本公开涉及网络通信领域，具体公开了一种自适应均衡方法，包括：根据第一滤波器系数获得第一滤波信号; 基于原始星座图确定第一滤波信号以获得第一判定信号，并且基于级别（n-1）星座图确定第一滤波信号以获得电平（n-1）伪判定信号; 如果电平（n-1）误差信号的平均能量小于电平（n-1）阈值，则将电平（n-1）星座图切换到等级n星座图; 根据更新幅度获得第二滤波器系数; 根据第二滤波器系数获得第二滤波信号; 以及基于原始星座图确定第二滤波信号以获得第二判定信号。 本公开的实施例还公开了自适应均衡器。

    Feedback filter
    8.
    发明授权
    Feedback filter 失效
    反馈过滤器

    公开(公告)号：US07561619B2

    公开(公告)日：2009-07-14

    申请号：US10741029

    申请日：2003-12-19

    Applicant: Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    Inventor： Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    IPC: H03H7/30

    CPC classification number: H04L25/03057 ,  H03H21/0012 ,  H04L2025/0349 ,  H04L2025/03598

    Abstract: Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to recover a symbol value in the symbol interval. A feedback coefficient may be applied to a symbol value recovered in a previous symbol interval to generate the equalized signal in a current symbol interval. The feedback coefficient may be generated based, at least in part, on an estimated error associated with the equalized signal. The estimated error associated with the equalized output signal from among a plurality of candidate estimated error values.

    Abstract translation: 公开了一种用于从输入信号产生均衡信号的系统，方法和装置。 可以在符号间隔的每一个上检测均衡信号中的符号，以恢复符号间隔中的符号值。 可以将反馈系数应用于在先前符号间隔中恢复的符号值，以在当前符号间隔中生成均衡信号。 可以至少部分地基于与均衡信号相关联的估计误差来生成反馈系数。 与多个候选估计误差值中的均衡输出信号相关联的估计误差。

    COMMUNICATION RECEIVER WITH AN ADAPTIVE EQUALIZER
    9.
    发明申请
    COMMUNICATION RECEIVER WITH AN ADAPTIVE EQUALIZER 有权
    具有自适应均衡器的通信接收器

    公开(公告)号：US20080002763A1

    公开(公告)日：2008-01-03

    申请号：US11856678

    申请日：2007-09-17

    Applicant: Yongbin Wei ,  Durga Malladi ,  Josef Blanz

    Inventor： Yongbin Wei ,  Durga Malladi ,  Josef Blanz

    IPC: H03H7/30 ,  H03H7/40

    CPC classification number: H04B1/7105 ,  H04B2201/70701 ,  H04L25/0228 ,  H04L25/03044 ,  H04L2025/03509 ,  H04L2025/03522 ,  H04L2025/03598 ,  H04L2025/03617

    Abstract: In a wireless communication system, a method for estimating a transmitted signal is disclosed. A wireless signal is received that includes a pilot channel and at least one other channel. A transmitted signal is estimated using an equalizer and the received wireless signal. The equalizer includes a filter with a plurality of taps that are adapted through use of an adaptive algorithm that uses an estimated pilot estimated from the received wireless signal. The pilot channel is transmitted in the wireless signal that included the at least one other channel. The estimated pilot is extracted and provided to the adaptive algorithm.

    Abstract translation: 在无线通信系统中，公开了一种用于估计发送信号的方法。 接收包括导频信道和至少一个其它信道的无线信号。 使用均衡器和接收到的无线信号来估计发送信号。 均衡器包括具有多个抽头的滤波器，其通过使用自适应算法来适配，所述自适应算法使用从所接收的无线信号估计的估计导频。 在包括至少一个其他信道的无线信号中发送导频信道。 估计的导频被提取并提供给自适应算法。

    System for carrier phase tracking of coded symbols using reliability metrics for symbol estimates
    10.
    发明授权
    System for carrier phase tracking of coded symbols using reliability metrics for symbol estimates 有权
    使用符号估计的可靠性度量的编码符号的载波相位跟踪系统

    公开(公告)号：US06795512B1

    公开(公告)日：2004-09-21

    申请号：US09715877

    申请日：2000-11-17

    Applicant: Donald Brian Eidson ,  Ramaswamy Murali ,  Abraham Krieger ,  Magnus H. Berggren

    Inventor： Donald Brian Eidson ,  Ramaswamy Murali ,  Abraham Krieger ,  Magnus H. Berggren

    IPC: H04L2706

    CPC classification number: H04L25/067 ,  H04L1/0054 ,  H04L1/0055 ,  H04L25/025 ,  H04L2025/03598

    Abstract: A system for carrier phase tracking of symbols. In an embodiment employing a feedback structure, a symbol derotator pre-rotates a symbol by a derotation phase. A symbol and reliability estimation engine provides, responsive to the pre-rotated symbol, an estimate of the symbol and a reliability metric for the estimate. A tracking loop module determines a residual between the pre-rotated symbol and the symbol estimate, weights the residual by the reliability metric for the estimate, and determines a phase offset estimate responsive to the weighted residual. An accumulator then determines a next derotation phase responsive to the phase offset estimate. In an embodiment employing a feedforward structure, a symbol and reliability estimation engine provides an estimate of a symbol and a reliability metric for the estimate. A tracking loop module determines a residual between the symbol and the symbol estimate, weights the residual by the reliability metric for the estimate, and determines a derotation phase responsive to the weighted residual.

    Abstract translation: 符号载波相位跟踪系统。 在采用反馈结构的实施例中，符号解旋器通过解旋相预先旋转符号。 符号和可靠性估计引擎响应于预旋转符号提供符号的估计和估计的可靠性度量。 跟踪环模块确定预旋转符号和符号估计之间的残差，将残差加权用于估计的可靠性度量，并且响应于加权残差确定相位偏移估计。 然后，累加器确定响应于相位偏移估计的下一个解旋相位。 在采用前馈结构的实施例中，符号和可靠性估计引擎提供用于估计的符号估计和可靠性度量。 跟踪循环模块确定符号和符号估计之间的残差，将残差加权估计的可靠性度量，并根据加权残差确定解旋相位。

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