公开(公告)号：US08327195B1

公开(公告)日：2012-12-04

申请号：US13300354

申请日：2011-11-18

申请人： Haoli Qian ,  William Lo ,  Runsheng He ,  Jeffrey Choun ,  Ping Zheng ,  Hui Wang ,  Yi-Chun Chen ,  Chee Hoe Chu

发明人： Haoli Qian ,  William Lo ,  Runsheng He ,  Jeffrey Choun ,  Ping Zheng ,  Hui Wang ,  Yi-Chun Chen ,  Chee Hoe Chu

IPC分类号： G06F11/00 ,  H03H7/30

CPC分类号： H04L25/03019 ,  H04L1/203 ,  H04L25/03057

摘要： A system including a summer, a comparator, a zero-crossing module, and a control module. The summer is configured to (i) receive a data input signal, and (ii) generate an equalized signal in response to the data input signal. The comparator is configured to generate a recovered data signal in response to the equalized signal. The zero-crossing module is configured to generate a zero-crossing signal in response to the equalized signal. The control module is configured to generate eye information in response to i) the recovered data signal and ii) the zero-crossing signal. The eye information includes characteristic data associated with the recovered data signal, and the characteristic data when plotted provides an eye diagram.

摘要翻译： 包括加法器，比较器，过零模块和控制模块的系统。 夏天被配置为（i）接收数据输入信号，以及（ii）响应于数据输入信号产生均衡的信号。 比较器被配置为响应于均衡的信号产生恢复的数据信号。 过零模块被配置为响应于均衡信号产生过零信号。 控制模块被配置为响应于i）恢复的数据信号和ii）过零信号来生成眼睛信息。 眼睛信息包括与恢复的数据信号相关联的特征数据，并且绘制时的特征数据提供眼图。

公开(公告)号：US08074126B1

公开(公告)日：2011-12-06

申请号：US11810762

申请日：2007-06-07

申请人： Haoli Qian ,  William Lo ,  Runsheng He ,  Jeffrey Choun ,  Ping Zheng ,  Hui Wang ,  Yi-Chun Chen ,  Chee Hoe Chu

发明人： Haoli Qian ,  William Lo ,  Runsheng He ,  Jeffrey Choun ,  Ping Zheng ,  Hui Wang ,  Yi-Chun Chen ,  Chee Hoe Chu

IPC分类号： G06F11/00 ,  H03H7/30

CPC分类号： H04L25/03019 ,  H04L1/203 ,  H04L25/03057

摘要： A signal receiver includes a data recovery module that generates an equalized data signal and a recovered data signal based on a data input signal. An error module generates an error information signal based on the equalized data signal and an error threshold signal. An eye measurement control module generates an eye characteristic signal based on the recovered data signal and the error information signal.

摘要翻译： 信号接收机包括数据恢复模块，该数据恢复模块基于数据输入信号产生均衡的数据信号和恢复的数据信号。 错误模块基于均衡的数据信号和错误阈值信号产生错误信息信号。 眼睛测量控制模块基于恢复的数据信号和错误信息信号产生眼睛特征信号。

公开(公告)号：US07742556B1

公开(公告)日：2010-06-22

申请号：US11376601

申请日：2006-03-14

申请人： Haoli Qian ,  Runsheng He

发明人： Haoli Qian ,  Runsheng He

IPC分类号： H03D3/24

CPC分类号： H04L7/033 ,  H03L7/0807 ,  H03L7/0812 ,  H04L7/002

摘要： Circuits, methods, apparatus, and systems for recovering a clock from a spread spectrum signal having a periodic modulation profile. The circuits generally include an error detector circuit configured to compare the spread spectrum signal and a recovered clock signal, and to produce a first error signal corresponding to the periodic modulation profile and a second error signal corresponding to phase differences other than the spread spectrum modulation, a record and playback unit configured to record a value to a frequency memory, said value based on the first error signal and produce a third error signal corresponding to a predicted periodic modulation based at least in part on the recorded value, and a signal generator configured to produce the recovered clock signal in response to the second and third error signals.

摘要翻译： 用于从具有周期性调制曲线的扩频信号中恢复时钟的电路，方法，装置和系统。 电路通常包括错误检测器电路，其被配置为比较扩频信号和恢复的时钟信号，并且产生对应于周期性调制分布图的第一误差信号和对应于扩频调制以外的相位差的第二误差信号， 记录和重放单元，被配置为基于所述第一误差信号将值记录到频率存储器，并且至少部分地基于所述记录值产生与预测的周期性调制相对应的第三误差信号，以及信号发生器被配置 以响应于第二和第三误差信号产生恢复的时钟信号。

公开(公告)号：US07684778B1

公开(公告)日：2010-03-23

申请号：US11225685

申请日：2005-09-12

申请人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

发明人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

IPC分类号： H04B1/10

CPC分类号： H04B1/28 ,  H04B1/0032

摘要： Systems and techniques relating to image cancellation in received communications signals are described. In one aspect, a received communications signal can include a desired signal and an image signal. A leakage tracing signal can be generated, and the image signal can be removed from the communications signal using the leakage tracing signal mixed with the communications signal. Implementations can include generating a first channel signal and a second channel signal, generating a first filter using the first channel signal and the leakage tracing signal, and generating a second filter using the second channel signal and the leakage tracing signal. Removing the image signal from the communications signal can include filtering the first channel signal using the second filter to obtain a first filtered signal, filtering the second channel signal using the first filter to obtain a second filtered signal, and subtracting the second filtered signal from the first filtered signal.

摘要翻译： 描述与接收的通信信号中的图像消除有关的系统和技术。 在一个方面，接收的通信信号可以包括期望的信号和图像信号。 可以产生泄漏跟踪信号，并且可以使用与通信信号混合的泄漏跟踪信号从通信信号中去除图像信号。 实现可以包括产生第一信道信号和第二信道信号，使用第一信道信号和泄漏跟踪信号产生第一滤波器，以及使用第二信道信号和泄漏跟踪信号产生第二滤波器。 从通信信号中去除图像信号可以包括使用第二滤波器对第一信道信号进行滤波以获得第一滤波信号，使用第一滤波器对第二信道信号进行滤波以获得第二滤波信号，以及从第 第一个滤波信号。

公开(公告)号：US07471225B1

公开(公告)日：2008-12-30

申请号：US11636283

申请日：2006-12-08

申请人： Runsheng He ,  Haoli Qian

发明人： Runsheng He ,  Haoli Qian

IPC分类号： H03M3/00

CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

摘要： A noise shaping module comprises a first addition module that receives an input signal. A modulo operation module generates a modulo signal based on an output of the addition module. A truncation module truncates the modulo output to form a truncated signal. A feedback filter module generates a feedback signal that is an input to the first addition module based on the truncated signal.

摘要翻译： 噪声整形模块包括接收输入信号的第一加法模块。 模运算模块基于加法模块的输出产生模信号。 截断模块截断模数输出以形成截断的信号。 反馈滤波器模块基于截断信号产生作为第一加法模块的输入的反馈信号。

公开(公告)号：US08023920B1

公开(公告)日：2011-09-20

申请号：US12718909

申请日：2010-03-05

申请人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

发明人： Haoli Qian ,  Xiang Guang Feng ,  Runsheng He ,  Zhipei Chi

IPC分类号： H04B1/10

CPC分类号： H04B1/28 ,  H04B1/0032

摘要： Systems and techniques relating to image cancellation in received communications signals are described. A described technique includes receiving a communications signal including a desired signal and an image signal; generating a leakage tracing signal at a frequency band of the image signal, the leakage tracing signal including a noise signal, a frequency of the leakage tracing signal being within the frequency band of the image signal; and removing the image signal from a signal that is based on the communications signal and the leakage tracing signal to resolve the desired signal, where the removing is based on an addition of the leakage tracing signal to the communications signal. Removing the image signal can include using one or more weights to control one or more filters to resolve the desired signal. The one or more weights can be determined based on the noise signal.

摘要翻译： 描述与接收的通信信号中的图像消除有关的系统和技术。 所描述的技术包括接收包括期望信号和图像信号的通信信号; 在所述图像信号的频带处产生泄漏跟踪信号，所述泄漏跟踪信号包括噪声信号，所述泄漏跟踪信号的频率在所述图像信号的频带内; 以及从基于所述通信信号和所述泄漏跟踪信号的信号中去除所述图像信号以解决所述期望信号，其中所述去除是基于所述通信信号的所述泄漏跟踪信号的相加。 去除图像信号可以包括使用一个或多个权重来控制一个或多个滤波器来解析期望的信号。 可以基于噪声信号来确定一个或多个权重。

公开(公告)号：US07773017B1

公开(公告)日：2010-08-10

申请号：US12283841

申请日：2008-09-16

申请人： Runsheng He ,  Haoli Qian

发明人： Runsheng He ,  Haoli Qian

IPC分类号： H03M3/00

CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

摘要： A noise shaping module includes a first addition module that receives an N-bit digital input signal, where N is an integer greater than one. A first filter module generates a first filtered output signal based on an output signal of the first addition module. A truncation module generates an M-bit truncated output signal based on the first filtered output signal, where M is an integer less than N. A second filter module generates a second filtered output signal based on the M-bit truncated output signal. The second filtered output signal is an input to the first addition module.

摘要翻译： 噪声整形模块包括第一加法模块，其接收N位数字输入信号，其中N是大于1的整数。 第一滤波器模块基于第一加法模块的输出信号产生第一滤波输出信号。 截断模块基于第一滤波输出信号产生M位截断的输出信号，其中M是小于N的整数。第二滤波器模块基于M位截断输出信号产生第二滤波输出信号。 第二滤波输出信号是第一加法模块的输入。

公开(公告)号：US07425910B1

公开(公告)日：2008-09-16

申请号：US11526485

申请日：2006-09-25

申请人： Runsheng He ,  Haoli Qian

发明人： Runsheng He ,  Haoli Qian

IPC分类号： H03M3/00

CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

摘要： A noise shaping circuit and method for operating the same includes a first addition module that receives a digital input signal. A first filter module generates a first filtered output signal based on an output of the first addition module. A truncation module generates a truncated output signal based on first filtered output signal. A second filter module generates a second filtered output signal based on the truncated output signal. The second filtered output signal is an input to the first addition module.

摘要翻译： 噪声整形电路及其操作方法包括接收数字输入信号的第一加法模块。 第一滤波器模块基于第一加法模块的输出产生第一滤波输出信号。 截断模块基于第一滤波输出信号产生截断的输出信号。 第二滤波器模块基于截断的输出信号产生第二滤波输出信号。 第二滤波输出信号是第一加法模块的输入。

公开(公告)号：US09071479B2

公开(公告)日：2015-06-30

申请号：US13594595

申请日：2012-08-24

申请人： Haoli Qian ,  Yat-tung Lam ,  Runsheng He

发明人： Haoli Qian ,  Yat-tung Lam ,  Runsheng He

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159 ,  H04L25/03 ,  H04B10/69

CPC分类号： H04L25/03057 ,  H04B10/6971 ,  H04L2025/03356 ,  H04L2025/03496

摘要： A decision-feedback equalizer (DFE) can be operated at higher frequencies when parallelization and pre-computation techniques are employed. Disclosed herein is a DFE design suitable for equalizing receive signals with bit rates above 10 GHz, making it feasible to employ decision feedback equalization in silicon-based optical transceiver modules. One illustrative embodiment includes a front end filter to reduce leading intersymbol interference in a receive signal; a serial-to-parallel converter and at least one pre-compensation unit that together convert the filtered signal into grouped sets of tentative decisions, the sets in each group being made available in parallel; a set of pipelined DFE multiplexer units to select a contingent symbol decision from each set of tentative decisions to form groups of contingent symbol decisions based on a presumed sequence of preceding symbol decisions; and an output multiplexer that chooses, based on preceding symbol decisions, one of said groups of contingent symbol decisions.

摘要翻译： 当采用并行化和预计算技术时，判决反馈均衡器（DFE）可以以更高的频率运行。 这里公开了一种DFE设计，其适用于均衡接收信号，比特率高于10GHz，使得在硅基光收发器模块中采用判决反馈均衡是可行的。 一个说明性实施例包括前端滤波器以减少接收信号中的前导符号间干扰; 串行到并行转换器和至少一个预补偿单元，其将滤波的信号一起转换成分组的一组暂定决定，每组中的组并行可用; 一组流水线DFE多路复用器单元，用于从每组暂定决定中选择或有符号决定，以基于先前符号决定的推定序列形成组合的偶然符号决定; 以及输出多路复用器，其基于先前的符号判定来选择所述组的偶然符号决定中的一个。

公开(公告)号：US07999711B1

公开(公告)日：2011-08-16

申请号：US12844862

申请日：2010-07-28

申请人： Runsheng He ,  Haoli Qian

发明人： Runsheng He ,  Haoli Qian

IPC分类号： H03M3/00

CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

摘要： A noise-shaping module including a first addition module configured to receive a digital input signal and a filtered output signal. A truncation module is configured to remove selected bits from the digital input signal and output a truncated output signal. The truncated output signal corresponds to the digital input signal with the selected bits removed. A second addition module is configured to output a difference signal. The difference signal is based on a difference between the digital input signal and the truncated output signal. A filter module is configured to generate the filtered output signal based on the difference signal and provide the filtered output signal to the first addition module.

摘要翻译： 噪声整形模块包括被配置为接收数字输入信号和滤波后的输出信号的第一加法模块。 截断模块被配置为从数字输入信号中去除所选择的位并输出截断的输出信号。 截断的输出信号对应于数字输入信号，其中所选择的位被去除。 第二加法模块被配置为输出差分信号。 差分信号基于数字输入信号和截断输出信号之间的差异。 滤波器模块被配置为基于差分信号产生经滤波的输出信号，并将经滤波的输出信号提供给第一加法模块。