公开(公告)号：US08811464B1

公开(公告)日：2014-08-19

申请号：US12978718

申请日：2010-12-27

申请人： Jagadish Venkataraman ,  Jamal Riani ,  Pui Shan Wong

发明人： Jagadish Venkataraman ,  Jamal Riani ,  Pui Shan Wong

IPC分类号： H03K5/159

CPC分类号： H04L25/03019 ,  H04L2025/03471 ,  H04L2025/03611

摘要： Apparatuses, methods, and other embodiments associated with adaptively determining equalizer setting for 10GBASE-KR transmitter are described. According to one embodiment, an apparatus for tuning an equalizer configured to undo the effects of a channel connecting a transmitter communicating to a receiver via a backplane includes a tuning logic configured to adaptively determine equalizer settings for the equalizer. The tuning logic includes a symmetric search logic configured to determine a desired boost setting for the equalizer, and an asymmetric search logic configured to determine a desired phase response for the equalizer.

摘要翻译： 描述了与自适应地确定10GBASE-KR发射机的均衡器设置相关联的装置，方法和其他实施例。 根据一个实施例，一种用于调谐均衡器的装置，被配置为撤销连接经由背板与接收器通信的发射机的信道的影响，该调谐逻辑被配置为自适应地确定均衡器的均衡器设置。 调谐逻辑包括被配置为确定均衡器的期望升压设置的对称搜索逻辑，以及被配置为确定所述均衡器的期望相位响应的非对称搜索逻辑。

公开(公告)号：US08644372B1

公开(公告)日：2014-02-04

申请号：US13459049

申请日：2012-04-27

申请人： Jamal Riani ,  Jagadish Venkataraman ,  Kok-Wui Cheong

发明人： Jamal Riani ,  Jagadish Venkataraman ,  Kok-Wui Cheong

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03318 ,  H04L25/03267

摘要： In a method for detecting symbols in a signal received via a communication channel, the signal including a plurality of signal points, each signal point in the plurality of signal points is processed using a decision feedback equalizer (DFE) to produce a DFE decision. Reliability of the DFE decision is assessed to determine whether the DFE decision is at least one of i) reliable or ii) not reliable. When it is determined that the DFE decision is not reliable, a block of signal points of the plurality of signal points is processed using a Viterbi Detector (VD) to generate a block of VD decisions. The block of VD decisions is selected to be used in place of a block of DFE decisions.

摘要翻译： 在用于检测通过通信信道接收的信号中的符号的方法中，包括多个信号点的信号，使用判决反馈均衡器（DFE）处理多个信号点中的每个信号点以产生DFE判定。 评估DFE决定的可靠性以确定DFE决定是否至少是i）可靠或ii）不可靠。 当确定DFE判定不可靠时，使用维特比检测器（VD）处理多个信号点的信号点块，以产生一个VD判定块。 选择VD决策块代替DFE决定块。

公开(公告)号：US20080232213A1

公开(公告)日：2008-09-25

申请号：US10597320

申请日：2005-01-24

申请人： Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink ,  Jamal Riani ,  Willem Marie Julia Marcel Coene ,  Steven Jena-Marie Lucie Van Beneden ,  Massimo Ciacci ,  Ali Nowbakht Irani

发明人： Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink ,  Jamal Riani ,  Willem Marie Julia Marcel Coene ,  Steven Jena-Marie Lucie Van Beneden ,  Massimo Ciacci ,  Ali Nowbakht Irani

IPC分类号： G11B5/58

CPC分类号： G11B20/10046 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/18 ,  G11B2020/1275 ,  G11B2020/1288 ,  G11B2020/1863 ,  H03M13/41 ,  H03M13/6331

摘要： On existing DVD and CD players a control loop is required for the adaptation and timing recovery. For Two-Dimensional Optical Storage such a control loop has drawbacks because PRML detection in the form of a stripe-wise Viterbi detector is used. Such a detector introduces an increasing detection delay when going from the outer rows towards the center of the broad spiral. A feedback loop is arranged to determining an error signal from a first area of the data block where the first area is that area where the error signal can be determined within the shortest period of time. This reduces the duration of the detection step and thus increases the stability of the control loop.

摘要翻译： 在现有的DVD和CD播放机上，适配和定时恢复需要一个控制环路。 对于二维光学存储，这样的控制回路具有缺点，因为使用了带状维特比检测器形式的PRML检测。 这种检测器在从外排朝向宽螺旋的中心时引入增加的检测延迟。 反馈环路被布置成从数据块的第一区域确定误差信号，其中第一区域是可以在最短时间内确定误差信号的区域。 这减少了检测步骤的持续时间，从而增加了控制回路的稳定性。

公开(公告)号：US08276052B1

公开(公告)日：2012-09-25

申请号：US12690829

申请日：2010-01-20

申请人： Jamal Riani ,  Haoli Qian

发明人： Jamal Riani ,  Haoli Qian

IPC分类号： H03M13/03 ,  H03M13/00 ,  G01R31/28 ,  H04L27/08 ,  H04L12/26 ,  H04B17/00

CPC分类号： H04L25/067

摘要： A system and method for recovering the seed of a pseudo-random binary sequence (PRBS) using soft decisions is disclosed. In some implementations, a log-likelihood ratio is calculated to determine the certainty with which each bit in the seed has been recovered, and in some implementations, the value of the PRBS is used in the calculation of the log-likelihood ratio. In some implementations, a linear feedback shift register stores the log-likelihood ratio for each bit in the sequence.

摘要翻译： 公开了一种使用软判决来恢复伪随机二进制序列（PRBS）种子的系统和方法。 在一些实现中，计算对数似然比以确定种子中每个位已被恢复的确定性，并且在一些实现中，PRBS的值用于计算对数似然比。 在一些实现中，线性反馈移位寄存器存储序列中每个比特的对数似然比。

公开(公告)号：US08532203B1

公开(公告)日：2013-09-10

申请号：US12472588

申请日：2009-05-27

申请人： Jamal Riani ,  Runsheng He

发明人： Jamal Riani ,  Runsheng He

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/0238 ,  H04L25/0212 ,  H04L25/0252 ,  H04L25/03057 ,  H04L25/0307

摘要： Embodiments of the present invention include communication systems and methods using channel estimation based on cumulants. In one embodiment, the present invention includes a receiver comprising a sampler coupled to a communication channel for receiving an input signal and providing samples of the input signal at a first sample rate, a channel estimation circuit coupled to receive the sampled input signal, the channel estimation circuit estimating the amplitude response of the communication channel by autocorrelating the input signal, estimating the phase response of the communication channel using a fourth order cumulant of the input signal, and generating an estimated impulse response of the communication channel using the estimated amplitude response and the estimated phase response, and a channel initialization circuit coupled to the channel estimation circuit for configuring the receiver using the estimated impulse response.

摘要翻译： 本发明的实施例包括使用基于累积量的信道估计的通信系统和方法。 在一个实施例中，本发明包括接收机，该接收机包括耦合到通信信道的采样器，用于接收输入信号并以第一采样率提供输入信号的采样，耦合以接收采样的输入信号的信道估计电路， 估计电路，通过对所述输入信号进行自相关来估计所述通信信道的振幅响应，使用所述输入信号的第四级累积量估计所述通信信道的相位响应，以及使用所述估计的振幅响应生成所述通信信道的估计的脉冲响应;以及 估计的相位响应以及耦合到信道估计电路的信道初始化电路，用于使用所估计的脉冲响应来配置接收机。

公开(公告)号：US07987396B1

公开(公告)日：2011-07-26

申请号：US12556483

申请日：2009-09-09

申请人： Jamal Riani ,  Haoli Qian

发明人： Jamal Riani ,  Haoli Qian

IPC分类号： G06F11/00

CPC分类号： H04L25/03057

摘要： The present specification describes techniques and apparatus that adjust filter tap values to be used in filtering a data value input to a detector and/or that increase or decrease a threshold value used to determine whether to adjust the filter tap values.

摘要翻译： 本说明书描述了调整滤波器抽头值用于过滤输入到检测器的数据值和/或增加或减少用于确定是否调整滤波器抽头值的阈值的技术和装置。

公开(公告)号：US20080219392A1

公开(公告)日：2008-09-11

申请号：US11995013

申请日：2006-07-06

申请人： Jamal Riani ,  Steven J-M.L. Van Beneden ,  Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink

发明人： Jamal Riani ,  Steven J-M.L. Van Beneden ,  Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink

IPC分类号： H04L7/00 ,  H04L25/00

CPC分类号： H04L7/0062 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/1403 ,  H04L7/04

摘要： A communication system includes a communication channel (110) for time-synchronous transfer of data symbols a1, . . . , aN to a receiver (130). A sampling unit (132) is used for time-sequential sampling the channel under control of a sampling clock signal that is synchronous with transmittal of the data symbols. Each sample includes a representation of a data symbol and noise. A data-aided timing error detector (133) receives a representation of the samples. The detector includes a data-dependent noise predictor (310) for generating a predicted noise sequence ñ1, . . . , ñN where each predicted noise value nk for the k-th sample of the sequence depends on a cluster of a plurality of sampled data symbols and a noise whitening unit (320) for whitening of noise in the sample sequence by removing the predicted noise value ñk. The detector is arranged to provide a signal for correcting the sampling clock signal in dependence on the whitened sample sequence.

摘要翻译： 一种通信系统包括用于数据符号a 1的时间同步传送的通信信道（110）。 。 。 ，向接收机（130）发送一个“N”。 采样单元（132）用于在与数据符号的发送同步的采样时钟信号的控制下对信道进行时间序列采样。 每个样本包括数据符号和噪声的表示。 数据辅助定时误差检测器（133）接收样本的表示。 检测器包括用于产生预测噪声序列的数据相关噪声预测器（310）。 。 。 ，其中序列的第k个样本的每个预测噪声值n k k取决于多个采样数据符号的簇和噪声白化单元（ 320），用于通过去除预测的噪声值ñN k来采样序列中的噪声增白。 检测器被布置成根据白化样本序列提供用于校正采样时钟信号的信号。

公开(公告)号：US20070025222A1

公开(公告)日：2007-02-01

申请号：US10559353

申请日：2004-06-08

申请人： Albert Immink ,  Willem Marie Julia Coene ,  Johannes Wilhelmus Bergmans ,  Jamal Riani

发明人： Albert Immink ,  Willem Marie Julia Coene ,  Johannes Wilhelmus Bergmans ,  Jamal Riani

IPC分类号： G11B20/14 ,  G11B20/10

CPC分类号： G11B20/10009 ,  G11B20/10222 ,  G11B2020/1249

摘要： The present invention relates to a method for synchronizing the signals coming from a set of data channels of a two dimensional optical read-out system. Said synchronization method comprises a step of cross-correlating the signals of a pair of adjacent channels for determining a relative phase delay between said adjacent channels. It also comprises a step of iterating the cross-correlation step for the different pair of adjacent channels of the set of data channels. It finally comprises a step of compensating for the relative phase delays thus obtained in order to align the signals from adjacent channels with each other. The present invention is based on, for example, the use of the optical cross talk existing between adjacent channels in a cross correlator that is able to determine the relative phase between two adjacent channels.

摘要翻译： 本发明涉及一种用于同步来自二维光学读出系统的一组数据信道的信号的方法。 所述同步方法包括将一对相邻信道的信号互相关的步骤，以确定所述相邻信道之间的相对相位延迟。 它还包括对该组数据信道的不同的相邻信道对迭代互相关步骤的步骤。 它最终包括补偿由此获得的相对相位延迟以使来自相邻信道的信号彼此对准的步骤。 本发明基于例如在互相关器中相邻信道之间存在的能够确定两个相邻信道之间的相对相位的光串扰的使用。

公开(公告)号：US08489970B1

公开(公告)日：2013-07-16

申请号：US13614397

申请日：2012-09-13

申请人： Jamal Riani ,  Haoli Qian

发明人： Jamal Riani ,  Haoli Qian

IPC分类号： H03M13/03 ,  H03M13/00 ,  G01R31/28 ,  H04L27/08 ,  H04L12/26 ,  H04B17/00

CPC分类号： H04L25/067

摘要： A receiver includes a seed recovery module and a pseudo-random binary sequence generator. The seed recovery module is configured to receive a pseudo-random binary sequence and a signal including a seed value, recover the seed value from the signal using the pseudo-random binary sequence, and determine a likelihood that a bit of the seed value was recovered accurately. The pseudo-random binary sequence generator is configured to generate the pseudo-random binary sequence, and adjust the pseudo-random binary sequence based on the likelihood until the likelihood is greater than a threshold.

摘要翻译： 接收机包括种子恢复模块和伪随机二进制序列发生器。 种子恢复模块被配置为接收伪随机二进制序列和包括种子值的信号，使用伪随机二进制序列从信号中恢复种子值，并确定种子值的位被恢复的可能性 准确。 伪随机二进制序列生成器被配置为生成伪随机二进制序列，并且基于似然性调整伪随机二进制序列，直到似然度大于阈值。

公开(公告)号：US20080253438A1

公开(公告)日：2008-10-16

申请号：US12093963

申请日：2006-11-10

申请人： Jamal Riani ,  Steven J-M., L. Van Beneden ,  Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink

发明人： Jamal Riani ,  Steven J-M., L. Van Beneden ,  Johannes Wilhelmus Maria Bergmans ,  Albert Hendrik Jan Immink

IPC分类号： H04L25/03 ,  H03K5/159

CPC分类号： H04L25/03038 ,  G11B20/10009 ,  H04L25/03261

摘要： Method for equalizer adaptation and/or target adaptation in a receiver for a transmission channel. The method provides for detecting data in the received signal, deriving an error sequence representing potential errors in the data detection, deriving a first value representing the likelihood of an error in the data detection, the first value based on the error sequence and the received signal, and enabling and disabling adaptation of the equalizer and/or the target response depending on the first value being below or above a predefined threshold value.

摘要翻译： 用于传输信道的接收机中的均衡器适配和/或目标适应的方法。 该方法提供检测接收信号中的数据，导出表示数据检测中的潜在错误的错误序列，导出表示数据检测中的误差的可能性的第一值，基于误差序列的第一值和接收信号 以及根据所述第一值低于或高于预定义的阈值来启用和禁用所述均衡器和/或目标响应的适配。