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1.发明申请In-Phase and Quadrature Pattern Alignment for Quadrature Phase Shift Keying Optical Transmitters 有权用于正交相移键控光发射机的同相和正交模式对准公开(公告)号：US20120250793A1
公开(公告)日：2012-10-04
申请号：US13078816
申请日：2011-04-01
CPC分类号： H04L27/364
摘要： I/Q data skew in a QPSK modulator may be detected by sending identical or complementary data streams to I and Q channel PSK modulators, setting the relative carrier phase between I and Q to zero or π, and monitoring the average QPSK output power, where the data streams sent to the I and Q channels include pseudorandom streams of ones and zeroes.
摘要翻译： 可以通过向I和Q通道PSK调制器发送相同或补充的数据流来检测QPSK调制器中的I / Q数据偏移，将I和Q之间的相对载波相位设置为零或pgr，并监视平均QPSK输出功率， 其中发送到I和Q信道的数据流包括1和0的伪随机流。
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2.发明申请公开(公告)号：US20120020659A1
公开(公告)日：2012-01-26
申请号：US13251970
申请日：2011-10-03
CPC分类号： H04J14/06 , H04B10/0775
摘要： Systems and techniques for optical communications based on polarization division multiplexing are described.
摘要翻译： 描述了基于偏振分复用的光通信系统和技术。
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3.发明授权Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control 有权自适应信号均衡器，具有自适应误差定时和前置/后端配置控制公开(公告)号：US07421021B2
公开(公告)日：2008-09-02
申请号：US11759720
申请日：2007-06-07
申请人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
发明人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L2025/0349 , H04L2025/03611
摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.
摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。
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4.发明申请公开(公告)号：US20100098420A1
公开(公告)日：2010-04-22
申请号：US12256326
申请日：2008-10-22
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , H04B10/0775
摘要： Systems and techniques for optical communications based on polarization division multiplexing are described.
摘要翻译： 描述了基于偏振分复用的光通信的系统和技术。
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公开(公告)号：US07627031B2
公开(公告)日：2009-12-01
申请号：US11186241
申请日：2005-07-21
申请人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Edem Ibragimov , Fabian Giroud
发明人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Edem Ibragimov , Fabian Giroud
IPC分类号： H03H7/30
CPC分类号： H04L7/0062 , H04L7/0029 , H04L25/03057 , H04L2025/03503
摘要： An apparatus and method for adaptively introducing a compensating signal latency related to a signal latency of a data symbol decision circuit. Adaptive timing control circuitry, including an interpolating mixer implemented as a tapped delay line with correlated tap coefficients, introduces a latency adaptively and substantially matching the latency of the data decision circuit for use within an adaptive equalizer, thereby minimizing the mean-squared error of such decision circuit. This adaptive latency is used in generating the feedback error signal which, in turn, can be used by the feedforward equalizer for dynamically adjusting its adaptive filter tap coefficients.
摘要翻译： 一种用于自适应地引入与数据符号判定电路的信号等待时间相关的补偿信号延迟的装置和方法。 自适应定时控制电路，包括实现为具有相关抽头系数的抽头延迟线的内插混频器，自适应地和基本上匹配数据判决电路的等待时间以在自适应均衡器内使用，从而最小化这样的均方误差 决策电路。 该自适应等待时间用于产生反馈误差信号，反馈误差信号又可由前馈均衡器用于动态调整其自适应滤波器抽头系数。
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公开(公告)号：US07394849B2
公开(公告)日：2008-07-01
申请号：US11539810
申请日：2006-10-09
申请人： Edem Ibragimov , Qian Yu , Prashant Choudhary
发明人： Edem Ibragimov , Qian Yu , Prashant Choudhary
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L25/03063 , H04L25/0307 , H04L2025/0349 , H04L2025/03509 , H04L2025/03611
摘要： A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer. The dynamic timing is controlled by a signal formed as a combination of feedback and feedforward signals. The feedback signal is an error signal related to a difference between pre-slicer and post-slicer signals. The feedforward signal is formed by differentiating and delaying the incoming data signal.
摘要翻译： 具有用于自适应信号均衡器的动态反馈控制的判决反馈均衡器。 动态控制决策反馈环路内的定时，以优化输出信号限幅器对数据信号的恢复。 动态定时由形成为反馈和前馈信号的组合的信号控制。 反馈信号是与预切片器和后切片器信号之间的差异相关的误差信号。 前馈信号通过差分和延迟输入数据信号来形成。
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公开(公告)号：US06822747B1
公开(公告)日：2004-11-23
申请号：US10191486
申请日：2002-07-10
申请人： Jainferg Li , Michael Rivera , Edem Ibragimov
发明人： Jainferg Li , Michael Rivera , Edem Ibragimov
IPC分类号： G01B902
CPC分类号： G02B6/29394 , G02B6/29358 , G02B6/29395 , G02B6/29398
摘要： Methods and apparatus for chromatic dispersion compensation are provided. The apparatus includes a Gires-Tournois etalon, an optical beam separator, a GTE controller, an optical distortion analyzer, and a feedback controller.
摘要翻译： 提供了用于色散补偿的方法和装置。 该装置包括Gires-Tournois标准具，光束分离器，GTE控制器，光学失真分析器和反馈控制器。
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公开(公告)号：US20120224847A1
公开(公告)日：2012-09-06
申请号：US13243885
申请日：2011-09-23
IPC分类号： H04B10/08
CPC分类号： H04B10/616 , H04L27/223
摘要： A method for detecting and measuring time skew in high-speed DP-QPSK coherent optical receivers is described.
摘要翻译： 描述了用于检测和测量高速DP-QPSK相干光接收机中的时间偏移的方法。
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9.发明授权公开(公告)号：US08032025B2
公开(公告)日：2011-10-04
申请号：US12256326
申请日：2008-10-22
IPC分类号： H04B14/00
CPC分类号： H04J14/06 , H04B10/0775
摘要： Systems and techniques for optical communications based on polarization division multiplexing are described.
摘要翻译： 描述了基于偏振分复用的光通信系统和技术。
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10.发明授权Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control 有权自适应信号均衡器，具有自适应误差定时和前置/后端配置控制公开(公告)号：US07266145B2
公开(公告)日：2007-09-04
申请号：US10321876
申请日：2002-12-17
申请人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Qian Yu
发明人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Qian Yu
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L2025/0349 , H04L2025/03611
摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.
摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。
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