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    Detection and mitigation of temporary impairments in a communications channel
    11.
    发明授权
    Detection and mitigation of temporary impairments in a communications channel 失效
    检测和缓解通信信道中的临时损伤

    公开(公告)号：US08068564B2

    公开(公告)日：2011-11-29

    申请号：US12001316

    申请日：2007-12-11

    申请人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

    发明人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min

    IPC分类号： H04L27/06

    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。

    System and method for canceling interference in a communication system
    12.
    发明申请
    System and method for canceling interference in a communication system 失效
    消除通信系统干扰的系统和方法

    公开(公告)号：US20070201590A1

    公开(公告)日：2007-08-30

    申请号：US11789764

    申请日：2007-04-24

    申请人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min ,  Eric Ojard ,  James Thi ,  Daniel Howard

    发明人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min ,  Eric Ojard ,  James Thi ,  Daniel Howard

    IPC分类号： H04B1/10

    CPC分类号： H04B1/1036 ,  H04B1/1027 ,  H04B1/123 ,  H04L1/0001 ,  H04L25/03006

    摘要： A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio. Other spectral modifications include modifying spectral components corresponding to an expected interfering signal. In modifying these spectral characterizations, spectral components corresponding to a plurality of expected interfering signals may be modified.

    摘要翻译： 滤波器设置生成操作包括对通信信道进行采样以产生采样信号。 采样信号在感兴趣的频带上进行频谱表征，以产生采样信号的频谱表征。 该光谱特性可能不包括感兴趣的信号。 然后修改光谱表征以产生修改的光谱表征。 然后基于修改的光谱表征生成滤波器设置。 最后，当感兴趣的信号存在于通信信道上时，使用滤波器设置对通信信道进行滤波。 在修改光谱表征时，光谱特性的多个光谱特征被独立地修改以产生修改的光谱表征。 频谱表征的修改可以在频域和/或时域中执行。 执行的一个特定频谱修改是提高频谱表征的本底噪声以满足预算的信噪比。 其他频谱修改包括修改对应于预期干扰信号的频谱分量。 在修改这些频谱表征时，可以修改对应于多个预期干扰信号的频谱分量。

    System and method for canceling interference in a communication system
    13.
    发明申请
    System and method for canceling interference in a communication system 有权
    消除通信系统干扰的系统和方法

    公开(公告)号：US20050031064A1

    公开(公告)日：2005-02-10

    申请号：US10940136

    申请日：2004-09-14

    申请人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min ,  Eric Ojard ,  James Thi ,  Daniel Howard

    发明人： Thomas Kolze ,  Bruce Currivan ,  Jonathan Min ,  Eric Ojard ,  James Thi ,  Daniel Howard

    IPC分类号： H04B1/10 ,  H04B1/12 ,  H04L1/00 ,  H04L25/03

    CPC分类号： H04B1/1036 ,  H04B1/1027 ,  H04B1/123 ,  H04L1/0001 ,  H04L25/03006

    摘要： A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio. Other spectral modifications include modifying spectral components corresponding to an expected interfering signal. In modifying these spectral characterizations, spectral components corresponding to a plurality of expected interfering signals may be modified.

    摘要翻译： 滤波器设置生成操作包括对通信信道进行采样以产生采样信号。 采样信号在感兴趣的频带上进行频谱表征，以产生采样信号的频谱表征。 该光谱特性可能不包括感兴趣的信号。 然后修改光谱表征以产生修改的光谱表征。 然后基于修改的光谱表征生成滤波器设置。 最后，当感兴趣的信号存在于通信信道上时，使用滤波器设置对通信信道进行滤波。 在修改光谱表征时，光谱特性的多个光谱特征被独立地修改以产生修改的光谱表征。 频谱表征的修改可以在频域和/或时域中执行。 执行的一个特定频谱修改是提高频谱表征的本底噪声以满足预算的信噪比。 其他频谱修改包括修改对应于预期干扰信号的频谱分量。 在修改这些频谱表征时，可以修改对应于多个预期干扰信号的频谱分量。

    Method and apparatus for maintaining synchronization in a communication system
    15.
    发明授权
    Method and apparatus for maintaining synchronization in a communication system 有权
    用于在通信系统中维持同步的方法和装置

    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。

    Method and system for digital video broadcast for cable (DVB-C2)
    16.
    发明授权
    Method and system for digital video broadcast for cable (DVB-C2) 有权
    电视数字视频广播方法与系统（DVB-C2）

    公开(公告)号：US08437406B2

    公开(公告)日：2013-05-07

    申请号：US12269865

    申请日：2008-11-12

    申请人： Thomas Kolze ,  Robbert van der Wal ,  Bruce Currivan

    发明人： Thomas Kolze ,  Robbert van der Wal ,  Bruce Currivan

    IPC分类号： H04N7/12 ,  H04N11/02 ,  H04J3/24 ,  H03M13/00 ,  A61F2/48

    CPC分类号： H04N21/63 ,  H04H20/69 ,  H04H20/78

    摘要： Methods and systems for DVB-C2 are disclosed and may include receiving data encoded utilizing variable encoding, variable modulation and outer codes via a physical layer matched to a desired quality of service. An error probability may be determined for said received data and retransmission of portions of said data with error probability above an error threshold may be requested. The variable modulation may include single carrier modulation, orthogonal frequency division modulation, synchronous code division multiple access, and/or from 256 QAM to 2048 QAM or greater. The variable encoding may include forward error correction code, which may include low density parity check code.

    摘要翻译： 公开了DVB-C2的方法和系统，并且可以包括通过与期望的服务质量匹配的物理层来接收利用可变编码，可变调制和外部码编码的数据。 可以针对所述接收的数据确定错误概率，并且可以请求误差概率高于误差阈值的所述数据的部分的重传。 可变调制可以包括单载波调制，正交频分调制，同步码分多址，和/或从256QAM到2048QAM或更大。 可变编码可以包括前向纠错码，其可以包括低密度奇偶校验码。

    Synchronization of distributed cable modem network components
    19.
    发明申请
    Synchronization of distributed cable modem network components 有权
    分布式电缆调制解调器网络组件的同步

    公开(公告)号：US20060056461A1

    公开(公告)日：2006-03-16

    申请号：US11061147

    申请日：2005-02-18

    申请人： Bruce Currivan ,  Alexander MacInnis ,  Thomas Kolze ,  Richard Prodan

    发明人： Bruce Currivan ,  Alexander MacInnis ,  Thomas Kolze ,  Richard Prodan

    IPC分类号： H04J3/06

    CPC分类号： H04J3/0682

    摘要： A distributed cable modem termination system of the present invention includes a downstream transmitter hub, an upstream receiver hub, and a head end that communicatively couples to the downstream transmitter hub and to the upstream receiver hub via a packet data network. The head end and the downstream transmitter hub are operable to synchronize a clock of the downstream transmitter hub with a clock of the head end. Further, the upstream receiver hub and the downstream transmitter hub are operable to synchronize a clock of the upstream receiver hub with the clock of the downstream transmitter hub. Clock synchronization between the upstream receiver hub and the downstream transmitter hub are performed using ranging operations supported by at least one cable modem communicatively coupled to both the upstream receiver hub and the downstream transmitter hub via cable modem network plant.

    摘要翻译： 本发明的分布式电缆调制解调器终端系统包括下行发射机集线器，上游接收集线器和头端，其通过分组数据网络通信耦合到下游发射机集线器和上游接收集线器。 头端和下游发射器集线器可操作以使下游发射器集线器的时钟与头端的时钟同步。 此外，上游接收器集线器和下游发射器集线器可操作以将上游接收器集线器的时钟与下游发射器集线器的时钟同步。 上游接收器集线器和下游发射器集线器之间的时钟同步使用通过电缆调制解调器网络设备通信地耦合到上游接收器集线器和下游发射机集线器的至少一个电缆调制解调器支持的测距操作来执行。