Correcting errors in miscorrected codewords using list decoding
    71.
    发明授权
    Correcting errors in miscorrected codewords using list decoding 有权
    使用列表解码校正错误码字中的错误

    公开(公告)号:US08898539B2

    公开(公告)日:2014-11-25

    申请号:US13611158

    申请日:2012-09-12

    IPC分类号: H03M13/00

    摘要: A receive path of a communications system comprises an error-correction decoder, an error-detection decoder, and a codeword adjuster. The error-correction decoder performs error-correction decoding on a received codeword to generate a valid codeword. The error-detection decoder performs error-detection decoding on the valid codeword to determine whether or not the valid codeword is the correct codeword that was transmitted. If the valid codeword is not the correct codeword, then the codeword adjuster generates an adjusted valid codeword by applying an error vector to the valid codeword. The error-detection decoder performs error-detection decoding on the adjusted valid codeword to determine whether or not the adjusted valid codeword is the correct codeword. When the error-correction decoder generates an incorrect valid codeword, adjusting the valid codeword enables the receive path to recover the correct codeword without retransmitting or re-detecting the codeword.

    摘要翻译: 通信系统的接收路径包括纠错解码器,错误检测解码器和码字调节器。 误差校正解码器对接收的码字进行纠错解码,以生成有效的码字。 错误检测解码器对有效码字执行错误检测解码,以确定有效码字是否是发送的正确码字。 如果有效码字不是正确的码字,则码字调节器通过向有效码字应用误差向量来生成经调整的有效码字。 错误检测解码器对经调整的有效码字执行错误检测解码,以确定调整后的有效码字是否为正确码字。 当纠错解码器产生不正确的有效码字时,调整有效码字使得接收路径能够恢复正确的码字而不重传或重新检测码字。

    Optimized multi-level finite state machine with redundant DC nodes
    74.
    发明授权
    Optimized multi-level finite state machine with redundant DC nodes 有权
    具有冗余DC节点的优化多级有限状态机

    公开(公告)号:US08730067B2

    公开(公告)日:2014-05-20

    申请号:US13564836

    申请日:2012-08-02

    IPC分类号: H03M5/14

    CPC分类号: H03M5/145 H04L1/22

    摘要: A method and system for eliminating/suppressing long transition runs over a communications channel is disclosed. The method may include providing modulation coding based on a multi-level finite state machine (ML-FSM) having a periodic structure, the periodic structure being defined by a predetermined number of time frames. The ML-FSM may include a plurality of penalty-free edges for connecting nodes in one time frame to nodes at the same level in a subsequent time frame and a plurality of penalty edges for connecting nodes in one time frame to nodes at an upper level in the subsequent time frame. The method may further include utilizing the ML-FSM based modulation coding to facilitate data transmission over the communications channel.

    摘要翻译: 公开了一种用于消除/抑制通过通信信道的长过渡运行的方法和系统。 该方法可以包括提供基于具有周期性结构的多级有限状态机(ML-FSM)的调制编码,周期性结构由预定数量的时间帧定义。 ML-FSM可以包括用于将一个时间帧中的节点连接到后续时间帧中的相同电平的节点的多个无罚币边缘,以及用于将一个时间帧中的节点连接到上一级节点的多个惩罚边 在随后的时间内。 该方法还可以包括利用基于ML-FSM的调制编码来促进在通信信道上的数据传输。

    Adaptive calibration of noise predictive finite impulse response filter
    75.
    发明授权
    Adaptive calibration of noise predictive finite impulse response filter 有权
    噪声预测有限脉冲响应滤波器的自适应校准

    公开(公告)号:US08719682B2

    公开(公告)日:2014-05-06

    申请号:US13525182

    申请日:2012-06-15

    IPC分类号: G06F11/07

    摘要: Various embodiments of the present inventions are related to adaptive calibration of NPFIR filters in a data detector. For example, an apparatus for calibrating a noise predictive filter is disclosed, including a data detector operable to generate detected values for data sectors and having an embedded noise predictive finite impulse response filter. The apparatus also includes a comparator operable to determine whether a quality metric for a current one of the data sectors meets a noise threshold. The apparatus also includes a filter calibration circuit operable to adapt a number of filter coefficients for the noise predictive finite impulse response filter based on the detected values for the data sectors, and to omit the detected values for the current one of the data sectors from adaptation for one of the filter coefficients if the quality metric for the current one of the data sectors does not meet the noise threshold.

    摘要翻译: 本发明的各种实施例涉及数据检测器中的NPFIR滤波器的自适应校准。 例如,公开了一种用于校准噪声预测滤波器的装置,包括可操作以产生数据扇区的检测值并具有嵌入式噪声预测有限脉冲响应滤波器的数据检测器。 该装置还包括比较器,可操作以确定当前数据扇区的质量度量是否符合噪声阈值。 该装置还包括滤波器校准电路,其可操作以基于用于数据扇区的检测值来适应用于噪声预测有限脉冲响应滤波器的多个滤波器系数,并且从适配中省去当前数据扇区的检测值 对于当前一个数据扇区的质量度量不满足噪声阈值的滤波器系数之一。

    OPTIMIZED MULTI-LEVEL FINITE STATE MACHINE WITH REDUNDANT DC NODES
    78.
    发明申请
    OPTIMIZED MULTI-LEVEL FINITE STATE MACHINE WITH REDUNDANT DC NODES 有权
    优化的多级有限状态机与冗余直流电源

    公开(公告)号:US20140035692A1

    公开(公告)日:2014-02-06

    申请号:US13564836

    申请日:2012-08-02

    IPC分类号: H04L27/10

    CPC分类号: H03M5/145 H04L1/22

    摘要: A method and system for eliminating/suppressing long transition runs over a communications channel is disclosed. The method may include providing modulation coding based on a multi-level finite state machine (ML-FSM) having a periodic structure, the periodic structure being defined by a predetermined number of time frames. The ML-FSM may include a plurality of penalty-free edges for connecting nodes in one time frame to nodes at the same level in a subsequent time frame and a plurality of penalty edges for connecting nodes in one time frame to nodes at an upper level in the subsequent time frame. The method may further include utilizing the ML-FSM based modulation coding to facilitate data transmission over the communications channel.

    摘要翻译: 公开了一种用于消除/抑制通过通信信道的长过渡运行的方法和系统。 该方法可以包括提供基于具有周期性结构的多级有限状态机(ML-FSM)的调制编码,周期性结构由预定数量的时间帧定义。 ML-FSM可以包括用于将一个时间帧中的节点连接到后续时间帧中的相同电平的节点的多个无罚币边缘,以及用于将一个时间帧中的节点连接到上一级节点的多个惩罚边 在随后的时间内。 该方法还可以包括利用基于ML-FSM的调制编码来促进在通信信道上的数据传输。