公开(公告)号：US08306438B2

公开(公告)日：2012-11-06

申请号：US12758422

申请日：2010-04-12

申请人： Andrew Deczky ,  Mark Edward Rollins ,  Christian Bourget

发明人： Andrew Deczky ,  Mark Edward Rollins ,  Christian Bourget

IPC分类号： H04B10/00 ,  H04B10/06

CPC分类号： H04B10/614

摘要： The present disclosure relates to coherent optical receiver systems and methods for determining and correcting for optical angle and magnitude imbalance and for delay imbalance between quadrature paths. The present invention iteratively determines and corrects imbalance error and differential delay entirely in the digital domain (after an analog to digital conversion) in the presence of all the other impairments (polarization mode dispersion, chromatic dispersion, polarization gain imbalance, and polarization delay imbalance) using only the corrupted received signal during normal operation, i.e. without the use of training data. The present invention provides an effective adaptive scheme to drive impairments to zero, without using of any calibration of training, and may be applied during normal operation of the receiver via electrical circuitry or the like.

摘要翻译： 本公开涉及用于确定和校正光学角度和幅度不平衡以及正交路径之间的延迟不平衡的相干光接收机系统和方法。 本发明在存在所有其他损伤（偏振模色散，色散，极化增益不平衡和极化延迟不平衡）的情况下，在数字域（模数转换之后）中全部迭代地确定和校正不平衡误差和差分延迟， 在正常操作期间仅使用损坏的接收信号，即不使用训练数据。 本发明提供了一种有效的自适应方案，以将伤害驱动为零，而不使用任何训练校准，并且可以在接收机的正常操作期间通过电路等施加。

公开(公告)号：US07061974B2

公开(公告)日：2006-06-13

申请号：US10072615

申请日：2002-02-05

申请人： Alberto Ginesi ,  Andrew Deczky

发明人： Alberto Ginesi ,  Andrew Deczky

IPC分类号： H04B1/38

CPC分类号： H04L27/265 ,  H04L5/1453 ,  H04L27/2601 ,  H04L27/2628 ,  H04L27/2666

摘要： Method and apparatus for improving data transmission in a digital subscriber line (DSL) system. The transmitter determines whether a spectrum of an inverse Fourier transform (IFT) is periodic with respect to a clock of a predetermined standard-size IFT and communicates this information to the receiver. Based on this information, the receiver adapts the FT if desired. In effect, the receiver adapts its signal processing algorithms to process the received signal in accordance with the transmitter's IFT size. In this manner, transmission performance is improved.

公开(公告)号：US20110249981A1

公开(公告)日：2011-10-13

申请号：US12758422

申请日：2010-04-12

申请人： Andrew DECZKY ,  Mark Edward Rollins ,  Christian Bourget

发明人： Andrew DECZKY ,  Mark Edward Rollins ,  Christian Bourget

IPC分类号： H04B10/06

CPC分类号： H04B10/614

摘要： The present disclosure relates to coherent optical receiver systems and methods for determining and correcting for optical angle and magnitude imbalance and for delay imbalance between quadrature paths. The present invention iteratively determines and corrects imbalance error and differential delay entirely in the digital domain (after an analog to digital conversion) in the presence of all the other impairments (polarization mode dispersion, chromatic dispersion, polarization gain imbalance, and polarization delay imbalance) using only the corrupted received signal during normal operation, i.e. without the use of training data. The present invention provides an effective adaptive scheme to drive impairments to zero, without using of any calibration of training, and may be applied during normal operation of the receiver via electrical circuitry or the like.

摘要翻译： 本公开涉及用于确定和校正光学角度和幅度不平衡以及正交路径之间的延迟不平衡的相干光接收机系统和方法。 本发明在存在所有其他损伤（偏振模色散，色散，极化增益不平衡和极化延迟不平衡）的情况下，在数字域（模数转换之后）中全部迭代地确定和校正不平衡误差和差分延迟， 在正常操作期间仅使用损坏的接收信号，即不使用训练数据。 本发明提供了一种有效的自适应方案，以将伤害驱动为零，而不使用任何训练校准，并且可以在接收机的正常操作期间通过电路等施加。

公开(公告)号：US20080094107A1

公开(公告)日：2008-04-24

申请号：US11583785

申请日：2006-10-20

申请人： Stephane Dallaire ,  Brian Glenn Wall ,  Shawn Lawrence Scouten ,  Colin Harvey Cramm ,  Kenji Suzuki ,  Stephen Alie ,  Andrew Deczky

发明人： Stephane Dallaire ,  Brian Glenn Wall ,  Shawn Lawrence Scouten ,  Colin Harvey Cramm ,  Kenji Suzuki ,  Stephen Alie ,  Andrew Deczky

IPC分类号： H03K5/22

CPC分类号： H03K5/2481 ,  H04L25/0292 ,  H04L25/03019 ,  H04L2025/03617

摘要： Signal magnitude comparison apparatus and methods are disclosed. A first input circuit receives a differential input signal and provides a first output signal based on a magnitude of the differential input signal. A second input circuit is operatively coupled to the first input circuit and is operable to receive a second input signal, which may also be a differential signal, and to provide a second output signal based on a magnitude of the second input signal. The operative coupling between the first and second input circuits results in the first output signal and the second output signal forming a differential output signal that is indicative of a difference between the magnitude of the first differential input signal and the magnitude of the second input signal.

摘要翻译： 公开了信号幅度比较装置和方法。 第一输入电路接收差分输入信号，并且基于差分输入信号的幅度提供第一输出信号。 第二输入电路可操作地耦合到第一输入电路并且可操作以接收第二输入信号，其也可以是差分信号，并且基于第二输入信号的幅度来提供第二输出信号。 第一和第二输入电路之间的操作耦合导致第一输出信号和第二输出信号形成差分输出信号，该差分输出信号指示第一差分输入信号的幅度与第二输入信号的大小之间的差异。

公开(公告)号：US07173978B2

公开(公告)日：2007-02-06

申请号：US09912068

申请日：2001-07-23

申请人： Song Zhang ,  Bin Li ,  Andrew Deczky ,  Alberto Ginesi

发明人： Song Zhang ,  Bin Li ,  Andrew Deczky ,  Alberto Ginesi

IPC分类号： H04L27/36

CPC分类号： H04L1/006 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0069 ,  H04L5/023 ,  H04L27/2602

摘要： In a coding system for asymmetric digital subscriber line (ADSL) communications, a method of encoding a sequence of information bits is provided comprising the steps of dividing the information bits into encoding bits and parallel bits; encoding the encoding bits to produce encoded bits; mapping the encoded bits and the parallel bits into first and second pulse amplitude modulation (PAM) signals; and generating a quadrature amplitude modulation (QAM) signal from these first and second PAM signals. This method overcomes the decoder complexity that would otherwise be required due to the large QAM constellations involved for ADSL communications.

摘要翻译： 在用于非对称数字用户线（ADSL）通信的编码系统中，提供一种编码信息比特序列的方法，包括以下步骤：将信息比特划分为编码比特和并行比特; 对编码比特进行编码以产生编码比特; 将编码比特和并行比特映射到第一和第二脉冲幅度调制（PAM）信号中; 以及从这些第一和第二PAM信号产生正交幅度调制（QAM）信号。 该方法克服了由于ADSL通信涉及的大的QAM星座而将需要的解码器复杂度。

公开(公告)号：US20060156173A1

公开(公告)日：2006-07-13

申请号：US11290363

申请日：2005-11-30

申请人： Andrew Deczky

发明人： Andrew Deczky

IPC分类号： H03M13/00

CPC分类号： H03M13/2789 ,  H03M13/2732

摘要： The present invention provides a method and apparatus for the efficient implementation of a totally general convolutional interleaver in a discrete multi-tone (DMT)-based digital subscriber line (xDSL) system, such as a modem or the like, that uses forward error correction (FEC) and convolutional interleaving to combat the effects of impulse noise and the like. More specifically, the present invention provides a method and apparatus for implementing a general convolutional interleaver, with no constraints, in an efficient manner, using (D−1)*(I−1)/2 memory locations for the interleaved data in all cases.

摘要翻译： 本发明提供一种用于在基于离散多音（DMT）的数字用户线（xDSL）系统（诸如调制解调器等）中有效实现全通用卷积交织器的方法和装置，其使用前向纠错 （FEC）和卷积交织以对抗脉冲噪声等的影响。 更具体地，本发明提供了一种用于在所有情况下使用（D-1）*（I-1）/ 2个交织数据的存储器位置以有效的方式实现一般卷积交织器的方法和装置 。

公开(公告)号：US07010026B1

公开(公告)日：2006-03-07

申请号：US09652388

申请日：2000-08-31

申请人： Gudmundur Jim Hjartarson ,  Jonathan Boocock ,  Andrew Deczky ,  Andreas Weirich ,  Mark Feeley

发明人： Gudmundur Jim Hjartarson ,  Jonathan Boocock ,  Andrew Deczky ,  Andreas Weirich ,  Mark Feeley

IPC分类号： H04B1/38 ,  H04L5/16

CPC分类号： H04M11/062 ,  H04L12/6418 ,  H04L2012/6427 ,  H04L2012/6478 ,  H04L2012/6481 ,  H04M3/005 ,  H04M3/12 ,  H04M7/0057

摘要： A voice and data communication system whereby a line card digitizes and packetizes voice communications signals upon the failure of Customer Premises Equipment (CPE). The system comprises a line card for coupling the CPE with a network. Furthermore, the invention provides a system that can direct the voice signals to either or both of a voice network and a data network.

摘要翻译： 语音和数据通信系统，其中线路卡在客户驻地设备（CPE）的故障时数字化和分组语音通信信号。 该系统包括用于将CPE与网络耦合的线卡。 此外，本发明提供了一种系统，其可以将语音信号引导到话音网络和数据网络中的一个或两者。

公开(公告)号：US06295343B1

公开(公告)日：2001-09-25

申请号：US09614927

申请日：2000-07-12

申请人： Gudmundur “Jim” Hjartarson ,  Mark Feeley ,  Jonathan Boocock ,  Andrew Deczky ,  Andreas Weirich

发明人： Gudmundur “Jim” Hjartarson ,  Mark Feeley ,  Jonathan Boocock ,  Andrew Deczky ,  Andreas Weirich

IPC分类号： H04M1100

CPC分类号： H04M3/007 ,  H04M3/005 ,  H04M11/062

摘要： An integrated line card for providing an analog termination for both POTS and xDSL signals that present the appropriate impedances at xDSL frequencies for the xDSL signals and appropriate impedances at POTS frequencies for POTS signals. The line card comprises a front end for coupling combined POTS and xDSL transceiver circuits to a telephone line at a single termination and an impedance generator responsive to the frequency range of the POTS and the xDSL circuits for generating the appropriate impedances on the line at xDSL frequencies for xDSL signals and the appropriate impedances at POTS frequencies for POTS signals, such that the signals are coupled to the card without the use of a splitter. Preferably, the xDSL circuits and the POTS circuits share a common driver for driving signals onto the loop. An advantage of this arrangement is that the two circuits may be designed together thus ensuring out-of-band noise generated by either source does not interfere with the other. In a further embodiment the generation of the frequency dependent impedance is implemented by using a feedback circuit that feeds a signal representing current sensed on the loop back into the transmit driver.

摘要翻译： 用于为POTS和xDSL信号提供模拟终端的集成线路卡，为xDSL信号的xDSL频率提供适当的阻抗，并为POTS信号的POTS频率提供适当的阻抗。 线卡包括用于将组合的POTS和xDSL收发器电路在单个终端处耦合到电话线的前端，以及响应于POTS和xDSL电路的频率范围的阻抗发生器，用于在xDSL频率上在线路上产生适当的阻抗 对于xDSL信号和在POTS频率处的POTS信号的适当阻抗，使得信号在不使用分离器的情况下耦合到卡。 优选地，xDSL电路和POTS电路共享用于将信号驱动到环路上的公共驱动器。 这种布置的优点是两个电路可以一起设计，从而确保由任一个源产生的带外噪声不会干扰另一个。 在另一实施例中，频率相关阻抗的产生通过使用反馈电路来实现，所述反馈电路将表示在环路上感测到的电流的信号反馈回发送驱动器。

公开(公告)号：US20110268459A1

公开(公告)日：2011-11-03

申请号：US12772699

申请日：2010-05-03

申请人： Mark Edward ROLLINS ,  Andrew DECZKY

发明人： Mark Edward ROLLINS ,  Andrew DECZKY

IPC分类号： H04L7/00 ,  H04B10/06

CPC分类号： H04L7/0054 ,  H04B10/299 ,  H04B10/66 ,  H04J14/06 ,  H04L7/0029

摘要： The present disclosure provides timing recovery in optical systems in the presence of chromatic dispersion (CD), polarization mode dispersion (PMD), and polarization dependent loss (PDL) and to optimization of equalization settings based upon timing recovery moment strengths. A stable timing point may be determined in the presence of PMD and PDL impairments, even when the direct estimate of timing becomes unreliable. This determination may be performed entirely in the digital domain providing precise, predictable performance. Also, the present invention utilizes a monotonic relationship between the timing metric and CD setting error to provide directed search in setting the CD equalizer thereby reducing significantly the overall search effort in optimizing CD equalizer settings. This utilizes computations already performed by the transceiver for timing recovery function yielding a computational advantage over competing methods.

摘要翻译： 本公开提供了在存在色散（CD），偏振模色散（PMD）和偏振相关损耗（PDL）的情况下在光学系统中的定时恢复以及基于定时恢复力矩优化的均衡设置的优化。 即使当定时的直接估计变得不可靠时，也可以在存在PMD和PDL损伤的情况下确定稳定的定时点。 该确定可以完全在数字域中执行，提供精确的，可预测的性能。 此外，本发明利用时间度量和CD设置误差之间的单调关系，在设置CD均衡器时提供定向搜索，从而显着减少优化CD均衡器设置的整体搜索工作。 这利用已经由收发器执行的计时恢复功能产生比竞争方法的计算优势。

公开(公告)号：US07369566B2

公开(公告)日：2008-05-06

申请号：US10274820

申请日：2002-10-18

申请人： Andrew Deczky

发明人： Andrew Deczky

IPC分类号： H04Q11/02 ,  H04B1/38

CPC分类号： H04L5/0046 ,  H04L1/0017 ,  H04L5/0007 ,  H04L5/006 ,  H04L5/0064

摘要： Method and system for reducing power dissipation for data transmission from a transmitter to a receiver in a digital subscriber line (DSL) system when a rate of available data is below a first predetermined data rate for a predetermined length of time. The method includes the following steps. Normal parameters for a normal rate of said data transmission are stored. New parameters for a reduced rate of the data transmission are calculated. Data is transmitted at the reduced rate of the data transmission, wherein the reduced rate requires less power for data transmission. The normal rate of the data transmission is resumed using the normal parameters when the rate of available data rises above a second predetermined data rate.

摘要翻译： 当可用数据的速率低于预定时间长度的第一预定数据速率时，用于在数字用户线（DSL）系统中减少从发射机到接收机的数据传输的功率耗散的方法和系统。 该方法包括以下步骤。 存储所述数据传输的正常速率的正常参数。 计算数据传输速率降低的新参数。 以数据传输的降低的速率传输数据，其中降低的速率需要较少的数据传输功率。 当可用数据的速率上升到高于第二预定数据速率时，使用正常参数恢复数据传输的正常速率。