公开(公告)号：US07701978B2

公开(公告)日：2010-04-20

申请号：US10809893

申请日：2004-03-26

申请人： Thomas Kolze ,  Bruce Currivan ,  Niki Pantelias

发明人： Thomas Kolze ,  Bruce Currivan ,  Niki Pantelias

IPC分类号： H04J3/06

CPC分类号： H04J3/0638 ,  H04J3/0688 ,  H04L1/004 ,  H04L7/048 ,  H04L12/2801

摘要： A central entity and/or a remote device in a communication system are designed to address the problem of maintaining upstream synchronization in the remote device after loss of the downstream signal. The system maintains upstream transmissions from the remote device in a Synchronous-Code Division Multiple Access (S-CDMA) or perhaps Synchronous-Time Division Multiple Access (S-TDMA) mode that does not degrade performance caused by via poor upstream timing or a need for re-ranging. By providing novel functionality at the central entity for synchronizing first and second downstream signals and/or by providing novel functionality at the remote device for determining a symbol clock offset between a first terminated downstream signal and a second re-acquired downstream signal, embodiments of the present invention maintain synchronization through the loss of the downstream signal, thereby minimizing the need for re-ranging and avoiding poorly timed upstream bursts.

摘要翻译： 通信系统中的中央实体和/或远程设备被设计为解决在丢失下行信号之后维护远程设备中的上行同步的问题。 系统通过同步码分多址（S-CDMA）或可能的同步时分多址（S-TDMA）模式维护来自远程设备的上行传输，该模式不会因经过差的上行定时或需要而导致性能下降 重新定位 通过在中央实体提供用于同步第一和第二下游信号的新颖功能和/或通过在远程设备处提供新颖的功能来确定第一终止的下行信号和第二重新获得的下行信号之间的符号时钟偏移， 本发明通过下游信号的丢失来维持同步，从而最小化对重新测距的需要，并避免不良定时的上行脉冲串。

公开(公告)号：US08457040B2

公开(公告)日：2013-06-04

申请号：US10809685

申请日：2004-03-26

申请人： Thomas Kolze ,  Bruce Currivan ,  Niki Pantelias

发明人： Thomas Kolze ,  Bruce Currivan ,  Niki Pantelias

IPC分类号： H04B7/212

CPC分类号： H04L7/048 ,  H04J3/0638 ,  H04J3/0688 ,  H04L1/004

摘要： A central entity and/or a remote device in a communication system are designed to address the problem of maintaining upstream synchronization in the remote device after loss of the downstream signal. One issue of particular importance is maintaining upstream transmissions from the remote device in an S-CDMA (or perhaps S-TDMA) mode that do not degrade performance of the communication system via poor upstream timing or a need for re-ranging. By providing novel functionality at the central entity for synchronizing first and second downstream signals and/or by providing novel functionality at the remote device for determining a symbol clock offset between a first terminated downstream signal and a second re-acquired downstream signal, embodiments of the present invention facilitate maintenance of synchronization through the loss of the downstream signal, thereby minimizing the need for re-ranging and avoiding poorly timed upstream bursts.

摘要翻译： 通信系统中的中央实体和/或远程设备被设计为解决在丢失下行信号之后维护远程设备中的上行同步的问题。 一个特别重要的问题是在S-CDMA（或可能的S-TDMA）模式中维护来自远程设备的上行传输，其不会通过差的上行时序或重新测距的需要来降低通信系统的性能。 通过在中央实体提供用于同步第一和第二下游信号的新颖功能和/或通过在远程设备处提供新颖的功能来确定第一终止的下行信号和第二重新获得的下行信号之间的符号时钟偏移， 本发明便于通过丢失下行信号来维持同步，从而最小化对重新测距的需要，并避免不良定时的上行脉冲串。

公开(公告)号：US20050097617A1

公开(公告)日：2005-05-05

申请号：US10989209

申请日：2004-11-13

申请人： Bruce Currivan ,  Richard Prodan ,  Niki Pantelias ,  Thomas Kolze

发明人： Bruce Currivan ,  Richard Prodan ,  Niki Pantelias ,  Thomas Kolze

IPC分类号： H04B1/707 ,  H04B7/216 ,  H04J11/00 ,  H04L25/03 ,  H04L25/49 ,  H04L27/34 ,  H04N7/173 ,  H04B7/212 ,  H04N7/16

CPC分类号： H04B7/216 ,  H04B1/71 ,  H04B1/7107 ,  H04L25/03038 ,  H04L25/03343 ,  H04L25/49 ,  H04L27/3405 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04N7/17309 ,  H04N21/42676

摘要： A cable modem communication system includes a plurality of Cable Modems (CMs), a CM network segment, and a Cable Modem Termination System (CMTS). The CMTS segregates the plurality of CMs into a first group of CMs with which standard registering and ranging operations are performed and a second group of CMs with which attenuated transmission registering and ranging operations are performed. Each CM of the first group of CMs operable to perform registering and ranging operations by transmitting a ranging burst of a first format. Each CM of the second group of CMs operable to perform registering and ranging operations by transmitting a ranging burst of a second format that differs from the ranging burst of the first format. The CMTS may include a rake receiver that receives and demodulates a plurality of multi-path copies of the ranging burst of the second format.

摘要翻译： 电缆调制解调器通信系统包括多个有线调制解调器（CM），CM网络段和有线调制解调器终端系统（CMTS）。 CMTS将多个CM分离成执行标准注册和测距操作的第一组CM，以及执行衰减的传输注册和测距操作的第二组CM。 第一组CM的每个CM可操作以通过发送第一格式的测距突发来执行注册和测距操作。 第二组CM的每个CM可操作以通过发送与第一格式的测距脉冲串不同的第二格式的测距脉冲串来执行注册和测距操作。 CMTS可以包括接收和解调第二格式的测距突发的多个多路径副本的瑞克接收机。

公开(公告)号：US20050163196A1

公开(公告)日：2005-07-28

申请号：US11089139

申请日：2005-03-24

申请人： Bruce Currivan ,  Nabil Yousef ,  Thomas Kolze ,  Gottfried Ungerboeck

发明人： Bruce Currivan ,  Nabil Yousef ,  Thomas Kolze ,  Gottfried Ungerboeck

IPC分类号： H04B1/707 ,  H04B7/216 ,  H04L25/03 ,  H04L25/49 ,  H04L27/34

CPC分类号： H04B7/216 ,  H04B1/71 ,  H04B1/7107 ,  H04J13/0003 ,  H04J13/16 ,  H04L25/03038 ,  H04L25/03343 ,  H04L25/49 ,  H04L27/3405 ,  H04L2025/03375 ,  H04L2025/03477

摘要： A communication system performs burst noise cancellation. A transmitter produces and transmits a spread signal that comprises at least one known-value symbol spread by a plurality of non data-carrying orthogonal codes and data symbols spread by at least one data-carrying orthogonal code. The transmitter transmits the spread signal across a communication link that introduces burst noise. A burst noise detector determines burst noise affected chips of the orthogonal codes. A weight computation functional block calculates a plurality of complex-valued combining weights based upon the burst noise affected chips. A vector de-spreader and a linear combiner operate in combination to use the plurality of non data-carrying orthogonal codes, the at least one data-carrying orthogonal code, and the plurality of complex-valued combining weights to de-spread the received spread signal to produce the data symbols with the burst noise substantially removed.

摘要翻译： 通信系统执行突发噪声消除。 发射机产生并发射扩展信号，该扩展信号包括由多个非数据携带正交码扩展的至少一个已知值符号和由至少一个携带数据的正交码扩展的数据符号。 发射机通过引入突发噪声的通信链路发送扩展信号。 突发噪声检测器确定正交码的突发噪声影响码片。 权重计算功能块基于突发噪声影响的码片计算多个复值组合权重。 向量解扩器和线性组合器组合操作以使用多个非数据携带正交码，所述至少一个数据携带正交码和多个复值组合权重来对接收到的扩展进行解扩展 信号以产生具有基本去除的突发噪声的数据符号。

公开(公告)号：US07978795B2

公开(公告)日：2011-07-12

申请号：US11945288

申请日：2007-11-27

申请人： Bruce Currivan ,  Loke Tan ,  Thomas Kolze

发明人： Bruce Currivan ,  Loke Tan ,  Thomas Kolze

IPC分类号： H04L27/08

CPC分类号： H04L27/22 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/061 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03687

摘要： An apparatus comprising a slicer configured to produce a symbol decision value and a symbol error value utilizing, at least in part, a slicer input signal; and an automatic gain controller configured to facilitate the automatic control of a gain applied to the slicer input signal by producing a gain control signal, the automatic gain controller comprising a decision-directed amplitude error detector configured to utilize, at least in part, the symbol decision value and the symbol error value to produce an amplitude error signal, and a loop filter configured to utilize the amplitude error signal to produce the gain control signal.

摘要翻译： 一种包括限幅器的装置，其被配置为至少部分地利用限幅器输入信号产生符号判定值和符号误差值; 以及自动增益控制器，其被配置为通过产生增益控制信号来促进对施加到限幅器输入信号的增益的自动控制，所述自动增益控制器包括判决导向的幅度误差检测器，其被配置为至少部分地使用符号 决定值和符号误差值，以产生振幅误差信号;以及环路滤波器，其被配置为利用所述振幅误差信号来产生所述增益控制信号。

公开(公告)号：US07961823B2

公开(公告)日：2011-06-14

申请号：US10879673

申请日：2004-06-29

申请人： Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

发明人： Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

IPC分类号： H04B1/10 ,  H04B7/04 ,  H04L1/00

CPC分类号： H04L25/03006 ,  H04L7/033

摘要： Data error such as mean square error may be reduced in a system such as a communication receiver using a dithering algorithm that adjusts one or more parameters in the system. The dithering algorithm may be applied to more than one parameter in a nested manner. The dithering algorithm may be modified to immediately check the MSE after a parameter has been adjusted.

摘要翻译： 在诸如使用调整系统中的一个或多个参数的抖动算法的通信接收机的系统中，诸如均方误差之类的数据误差可能会降低。 抖动算法可以以嵌套方式应用于多个参数。 可以修改抖动算法，以便在调整参数后立即检查MSE。

公开(公告)号：US20090135896A1

公开(公告)日：2009-05-28

申请号：US11945288

申请日：2007-11-27

申请人： Bruce Currivan ,  Loke Tan ,  Thomas Kolze

发明人： Bruce Currivan ,  Loke Tan ,  Thomas Kolze

IPC分类号： H04L27/08 ,  H03H7/30 ,  H03K5/159

CPC分类号： H04L27/22 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/061 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03687

摘要： An apparatus comprising a slicer configured to produce a symbol decision value and a symbol error value utilizing, at least in part, a slicer input signal; and an automatic gain controller configured to facilitate the automatic control of a gain applied to the slicer input signal by producing a gain control signal, the automatic gain controller comprising a decision-directed amplitude error detector configured to utilize, at least in part, the symbol decision value and the symbol error value to produce an amplitude error signal, and a loop filter configured to utilize the amplitude error signal to produce the gain control signal.

摘要翻译： 一种包括限幅器的装置，其被配置为至少部分地利用限幅器输入信号产生符号判定值和符号误差值; 以及自动增益控制器，其被配置为通过产生增益控制信号来促进对施加到限幅器输入信号的增益的自动控制，所述自动增益控制器包括判决导向的幅度误差检测器，其被配置为至少部分地使用符号 决定值和符号误差值，以产生振幅误差信号;以及环路滤波器，其被配置为利用所述振幅误差信号来产生所述增益控制信号。

公开(公告)号：US07308050B2

公开(公告)日：2007-12-11

申请号：US10000415

申请日：2001-11-02

申请人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

发明人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

IPC分类号： H04L27/01

CPC分类号： H04L1/005 ,  H04B1/71 ,  H04B1/7102 ,  H04B1/7103 ,  H04B1/71055 ,  H04B1/71072 ,  H04B2201/709709 ,  H04L1/0009 ,  H04L1/0045 ,  H04L1/0057 ,  H04N21/6168

摘要： Systems and methods are disclosed for detecting temporary high level impairments, such as noise or interference, for example, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. In one embodiment, the method not only performs dynamic characterization of channel fidelity against impairments, but also uses this dynamic characterization of the channel fidelity to adapt the receiver processing and to affect an improvement in the performance of the receiver. For example, in this embodiment, the method increases the accuracy of the estimation of the transmitted information, or similarly, increases the probability of making the correct estimates of the transmitted information, even in the presence of temporary severe levels of impairment. The channel fidelity history may also be stored and catalogued for use in, for example, future optimization of the transmit waveform.

摘要翻译： 公开了用于检测临时高级损伤（例如噪声或干扰）的系统和方法，例如在通信信道中，并且随后减轻动态损伤的有害影响。 在一个实施例中，该方法不仅执行对损伤的信道保真度的动态表征，而且还使用信道保真度的动态表征来适应接收机处理并影响接收机性能的改善。 例如，在本实施例中，该方法提高了所发送信息的估计的准确性，或者类似地，即使存在临时严重的损伤水平，也增加了发送信息的正确估计的可能性。 信道保真度历史也可以存储和编目，以用于例如发射波形的未来优化。

公开(公告)号：US20060039459A1

公开(公告)日：2006-02-23

申请号：US11046783

申请日：2005-02-01

申请人： Thomas Kolze ,  Bruce Currivan

发明人： Thomas Kolze ,  Bruce Currivan

IPC分类号： H03H7/30 ,  H03D1/04

CPC分类号： H04L25/03019 ,  H04B1/1027 ,  H04B1/123 ,  H04L25/022 ,  H04L25/03343 ,  H04L2025/03617

摘要： Provided is a method and system for estimating distortion in a communications channel including an adaptive equalizer. The method includes determining one or more adaptive filter coefficients associated with a signal passed through the equalizer. The method also includes estimating un-equalized channel distortion based upon the determined adaptive filter coefficients.

公开(公告)号：US20050141460A9

公开(公告)日：2005-06-30

申请号：US10142189

申请日：2002-05-08

申请人： Bruce Currivan ,  Thomas Kolze ,  Gottfried Ungerboeck ,  Nabil Yousef

发明人： Bruce Currivan ,  Thomas Kolze ,  Gottfried Ungerboeck ,  Nabil Yousef

IPC分类号： H04B1/707 ,  H04B7/216 ,  H04J13/00 ,  H04J13/16

CPC分类号： H04B7/216 ,  H04B1/71 ,  H04B1/7102 ,  H04B1/7105 ,  H04B1/7107 ,  H04J13/0003 ,  H04J13/16

摘要： Cancellation of interference in a communication system with application to S-CDMA. A relatively straight-forward implemented, and computationally efficient approach of selecting a predetermined number of unused codes is used to perform weighted linear combination selectively with each of the input spread signals in a multiple access communication system. If desired, the predetermined number of unused codes is always the same in each implementation. Alternatively, the predetermined number of unused codes are selected from within a reordered code matrix using knowledge that is shared between the two ends of a communication system, such as between the CMs and a CMTS. While the context of an S-CDMA communication system having CMs and a CMTS is used, the solution is generally applicable to any communication system that seeks to cancel narrowband interference. Several embodiments are also described that show the generic applicability of the solution across a wide variety of systems.

摘要翻译： 消除应用于S-CDMA的通信系统中的干扰。 使用选择预定数量的未使用代码的相对简单的实现和计算上有效的方法来在多址通信系统中选择性地与每个输入扩展信号执行加权线性组合。 如果需要，在每个实现中，预定数量的未使用代码总是相同的。 或者，使用在诸如CM和CMTS之间的通信系统的两端之间共享的知识，从重排序代码矩阵中选择预定数量的未使用代码。 虽然使用具有CM和CMTS的S-CDMA通信系统的上下文，但该解决方案通常适用于试图取消窄带干扰的任何通信系统。 还描述了几个实施例，其显示了解决方案在各种系统上的通用适用性。