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1. 发明授权

US08891699B2 Characterization and assessment of communication channel average group delay variation 有权
标题翻译：通信信道平均群延迟变化的特征和评估
公开(公告)号：US08891699B2
公开(公告)日：2014-11-18
申请号：US13428698
申请日：2012-03-23
申请人： Bruce J. Currivan , Thomas J. Kolze , Jonathan S. Min , Victor T. Hou
发明人： Bruce J. Currivan , Thomas J. Kolze , Jonathan S. Min , Victor T. Hou
IPC分类号： H03D1/04
CPC分类号： H04L25/03159 , H04L25/03878
摘要： Characterization and assessment of communication channel average group delay variation. A signal having repeated signal components therein is received by a communication device, and that signal undergoes appropriate processing to determine respective amplitude and phase of a number of frequency bins. The phase difference from bin to bin (including respecting unwrapping, and proper normalization) is used to determine the group delay of a communication channel, or portion thereof, as a function of frequency. Multiple respective group delay measurements may be averaged to generate a wideband group delay of the communication channel as a function of frequency. Overlap between different respective band-edge portions of the communication channel may assist in generating a seamless continuous wideband spectrum estimation for use in determining the wideband group delay of the communication channel.
摘要翻译：通信信道平均群延迟变化的特征和评估。其中具有重复信号分量的信号由通信设备接收，并且该信号经过适当的处理以确定多个频率仓的相应振幅和相位。使用从bin到bin的相位差（包括关于展开和适当的归一化）来确定作为频率的函数的通信信道或其部分的组延迟。多个相应的组延迟测量可以被平均以产生作为频率的函数的通信信道的宽带组延迟。通信信道的不同相应带边部分之间的重叠可以有助于产生用于确定通信信道的宽带群延迟的无缝连续宽带频谱估计。

2. 发明授权

US08731113B2 Characterizing channel response using data tone decision feedback 有权
标题翻译：使用数据音判决反馈来表征信道响应
公开(公告)号：US08731113B2
公开(公告)日：2014-05-20
申请号：US13547166
申请日：2012-07-12
申请人： Thomas J. Kolze
发明人： Thomas J. Kolze
IPC分类号： H04L27/06
CPC分类号： H04L25/061 , H04L25/022 , H04L25/0228 , H04L25/0236 , H04L25/03292 , H04L27/2647
摘要： In addition, to pilot tones which may be existent within an orthogonal frequency division multiplexing (OFDM) signal, one or more data tones within that same signal may be employed to assist with channel estimation (alternatively, detection). Once a data tone qualifies as a pseudo-pilot tone, it may be used with the pilot tones for channel estimation. A qualifier considers slicer error associated with hard decisions for a data tone to determine if it is a candidate for assistance within channel estimation. A frame within an OFDM signal may, in one situation, include no pilot tones at all, and a previously calculated channel estimate may be used to process that frame. In addition, fewer pilot tones than needed to perform accurate channel estimation (based on the channel delay spread) may be employed by using one or more pseudo-pilot tones (e.g., qualified data tones).
摘要翻译：此外，对于在正交频分复用（OFDM）信号内可能存在的导频音调，可以采用该相同信号内的一个或多个数据音调来辅助信道估计（或者，检测）。一旦数据音调被认定为伪导频音，它可以与导频音一起用于信道估计。限定符考虑与数据音调的硬判决相关联的限幅器错误，以确定它是否是信道估计中的辅助候选者。在一种情况下，OFDM信号内的帧可以完全不包括导频音，并且可以使用先前计算的信道估计来处理该帧。此外，可以通过使用一个或多个伪导频音调（例如，限定数据音调）来采用比执行精确信道估计所需的导频音（基于信道延迟扩展）更少的导频音。

3. 发明授权

US08618968B2 Dual digital to analog converters (DACs) with codeword parsing 有权
标题翻译：具有码字解析的双模数转换器（DAC）
公开(公告)号：US08618968B2
公开(公告)日：2013-12-31
申请号：US13349107
申请日：2012-01-12
申请人： Bruce J. Currivan , Thomas J. Kolze , Ramon A. Gomez
发明人： Bruce J. Currivan , Thomas J. Kolze , Ramon A. Gomez
IPC分类号： H03M1/66
CPC分类号： H04B1/10 , H03M1/0614 , H03M1/68
摘要： Dual digital to analog converters (DACs) with codeword parsing. With respect to a codeword that is provided to a DAC, a processing module (e.g., a rollover processor) operates to divide, partition, etc. the codeword into different respective sub-codewords as may be provided to two or more DAC's. Adaptation with respect to differently generated sub-codewords with respect to different respective codewords may be made in terms of any one or more of a variety of characteristics, including sub-codeword width (e.g., the number of bits included within a sub-codeword), quantization steps, etc. Moreover, such adaptation may be in consideration of any one or more local and/or remote operating characteristics of one or more devices, communication links, etc. within a communication system or network. Different respective sub-codewords undergo processing by different respective DAC's in generating respective analog signals for combination in generating a final or output analog signal.
摘要翻译：具有码字解析的双模数转换器（DAC）。关于提供给DAC的码字，处理模块（例如，翻转处理器）操作以将码字划分，分割等等，可以提供给两个或更多个DAC的不同的相应子码字。关于不同生成的子码字相对于不同的相应码字的适应可以根据各种特征中的任何一种或多种进行，包括子码字宽度（例如，包括在子码字内的比特数），量化步骤等。此外，这种适配可以考虑通信系统或网络内的一个或多个设备，通信链路等的任何一个或多个本地和/或远程操作特性。不同的相应子码字经过不同的相应DAC的处理，以产生相应的模拟信号用于组合以产生最终的或输出的模拟信号。

4. 发明授权

US08555134B2 Turbo coding for upstream and downstream transmission over a channel 有权
标题翻译： Turbo编码用于通道上下游传输
公开(公告)号：US08555134B2
公开(公告)日：2013-10-08
申请号：US13613328
申请日：2012-09-13
申请人： Ravi Bhaskaran , Bruce J. Currivan , Thomas J. Kolze , Ba-Zhong Shen
发明人： Ravi Bhaskaran , Bruce J. Currivan , Thomas J. Kolze , Ba-Zhong Shen
IPC分类号： G06F11/00
CPC分类号： H04N21/437 , H03M13/29 , H03M13/2957 , H03M13/2966 , H03M13/6511 , H04L12/2801 , H04N7/17309
摘要： A method of transmitting data in a cable modem system includes the steps of encoding the data using forward error correction. The data is then encoded with Turbo encoding. The data is then sent to a modulation scheme. The data is then transmitted over a cable channel. The data is then demodulated. The data is then decoded using a Turbo decoder. An inverse of the forward error correction is then applied to the data.
摘要翻译：在电缆调制解调器系统中发送数据的方法包括使用前向纠错对数据进行编码的步骤。然后使用Turbo编码对数据进行编码。然后将数据发送到调制方案。然后通过有线信道传输数据。然后解调数据。然后使用Turbo解码器对数据进行解码。然后将前向纠错的逆向应用于数据。

5. 发明授权

US08472541B2 Signal processing under attenuated transmission conditions 有权
公开(公告)号：US08472541B2
公开(公告)日：2013-06-25
申请号：US13118430
申请日：2011-05-29
申请人： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Gottfried Ungerboeck
发明人： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Gottfried Ungerboeck
IPC分类号： H04L27/28
CPC分类号： H04L27/3411 , H04B1/71 , H04B1/7107 , H04B7/216 , H04L25/03038 , H04L25/03343 , H04L25/49 , H04L27/3405 , H04L2025/03375 , H04L2025/03477 , H04N7/17309 , H04N21/42676
摘要： Signal processing under attenuated transmission conditions. Within an orthogonal signal space, the number of orthogonal signals that are used to transmit information from a transmitter to a receiver is reduced and the transmitted power of each of the now remaining orthogonal signals is modified; this may involve increasing the power of all of the remaining orthogonal signals equally or alternatively modifying them individually. The same modulation used before the reduction may also be used afterwards; within communication systems having multiple transmitter-receiver paths, this will ensure that the communication system's throughput and efficiency will remain unchanged even when one (or more) transmitter-receiver paths are highly attenuated. In addition, robust mode operation is provided for ranging and registering of transmitter devices when entering the communication system. In addition, the unused orthogonal signals may be employed to support interference cancellation of those orthogonal signals that are used to transmit information.

6. 发明申请

US20130136142A1 SYSTEMS AND METHODS TO TRANSMIT INFORMATION AMONG A PLURALITY OF PHYSICAL UPSTREAM CHANNELS 有权
标题翻译：物理上海通道的多样性传输信息的系统和方法
公开(公告)号：US20130136142A1
公开(公告)日：2013-05-30
申请号：US13717611
申请日：2012-12-17
申请人： Thomas J. Kolze
发明人： Thomas J. Kolze
IPC分类号： H04L12/02
CPC分类号： H04L47/72 , H04B17/24 , H04L12/02 , H04W52/225 , H04W52/262 , H04W52/267 , H04W52/34
摘要： A communication system includes a supervisory node (e.g., a headend) and one or more remote nodes (e.g., cable modems). The supervisory node or a remote node monitors a characteristic associated with the communication system. Remote node transmits an upstream communication among a plurality of physical upstream channels based on the characteristic. The average transmit power used to transmit the upstream communication among the plurality of physical upstream channels is no greater than the average transmit power that would be necessary to transmit the upstream communication using a single physical upstream channel at a lower data rate.
摘要翻译：通信系统包括监控节点（例如头端）和一个或多个远程节点（例如电缆调制解调器）。监控节点或远程节点监视与通信系统相关联的特性。远程节点根据该特性在多个物理上行信道之间发送上游通信。用于在多个物理上行信道中传输上游通信的平均发送功率不大于以较低数据速率使用单个物理上行信道发送上行通信所必需的平均发送功率。

7. 发明授权

US08422605B2 System and method for linear distortion estimation by way of equalizer coefficients 有权
公开(公告)号：US08422605B2
公开(公告)日：2013-04-16
申请号：US13310275
申请日：2011-12-02
申请人： Thomas J. Kolze , Bruce J. Currivan
发明人： Thomas J. Kolze , Bruce J. Currivan
IPC分类号： H04B1/10
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.

8. 发明授权

US08279987B2 System and method for canceling interference in a communication system 有权
标题翻译：消除通信系统干扰的系统和方法
公开(公告)号：US08279987B2
公开(公告)日：2012-10-02
申请号：US13026608
申请日：2011-02-14
申请人： Thomas J. Kolze , Bruce J. Currivan , Jonathan S. Min , Eric J. Ojard , James Chi Thi , Daniel H. Howard
发明人： Thomas J. Kolze , Bruce J. Currivan , Jonathan S. Min , Eric J. Ojard , James Chi Thi , Daniel H. 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。

9. 发明申请

US20120243527A1 Upstream burst noise measurement and characterization 有权
标题翻译：上游突发噪声测量和表征
公开(公告)号：US20120243527A1
公开(公告)日：2012-09-27
申请号：US13428357
申请日：2012-03-23
申请人： Bruce J. Currivan , Thomas J. Kolze , Jonathan S. Min , Victor T. Hou
发明人： Bruce J. Currivan , Thomas J. Kolze , Jonathan S. Min , Victor T. Hou
IPC分类号： H04W24/00 , H04L5/00
CPC分类号： H04L1/004 , H04L1/20 , H04L2001/0096
摘要： Upstream burst noise measurement and characterization. One or more communication devices is implemented to detect and measure burst noise event(s) within channel(s) associated with communication link(s) within communication system(s) or network(s). Detection and measurement of a burst noise event may be made during active communications on one or more other channels, and may be made during active communications on two channels respectively adjacent to the channel on which the burst noise event is being detected and measured. The channel on which the burst noise event is detected and measured may be an unused channel. The detection and measurement of the burst noise event may be made during a quiet time slot within one of the channels. Correlation (e.g., with respect time) may be determined with respect to different respective layers within a communication device (e.g., with respect to MAC and PHY layers).
摘要翻译：上游突发噪声测量和表征。实现一个或多个通信设备以检测和测量与通信系统或网络内的通信链路相关联的信道内的突发噪声事件。突发噪声事件的检测和测量可以在一个或多个其它信道上的有效通信期间进行，并且可以在与在其上检测和测量突发噪声事件的信道相邻的两个信道上的有效通信期间进行。检测和测量突发噪声事件的信道可以是未使用的信道。突发噪声事件的检测和测量可以在一个信道内的安静时隙内进行。相关性（例如，相对于时间）可以针对通信设备内的不同相应层（例如，相对于MAC层和PHY层）来确定。

10. 发明申请

US20120230385A1 Narrowband ingress estimation and characterization using equalizer taps 有权
标题翻译：使用均衡器抽头的窄带入口估计和表征
公开(公告)号：US20120230385A1
公开(公告)日：2012-09-13
申请号：US13406877
申请日：2012-02-28
申请人： Bruce J. Currivan , Thomas J. Kolze , Roger Fish , Victor T. Hou
发明人： Bruce J. Currivan , Thomas J. Kolze , Roger Fish , Victor T. Hou
IPC分类号： H04L27/01
CPC分类号： H04L25/03057 , H04L25/022
摘要： Narrowband ingress estimation and characterization using equalizer taps. A equalizer including a feed forward equalizer (FFE) and a decision feedback equalizer (DFE) is implemented to process an input signal thereby generating an output signal. Analysis of the frequency response of the equalizer including the FFE and the DFE of the equalizer allows for the determination of whether or not narrowband ingress exists within the signal received by the equalizer. For example, analysis of the signal output from the equalizer provides for determination of the overall frequency response of the equalizer. In addition, analysis of the respective equalizer coefficients within one or both of the FFE and the DFE of the equalizer may be used to determine the overall frequency response of the equalizer. Narrowband ingress may be identified when the combination of the FFE (having a notch therein) and the DFE provides for an overall flat frequency response.
摘要翻译：使用均衡器抽头的窄带入口估计和表征。实现包括前馈均衡器（FFE）和判决反馈均衡器（DFE）的均衡器来处理输入信号从而产生输出信号。对包括均衡器的FFE和DFE的均衡器的频率响应的分析允许确定在均衡器接收到的信号内是否存在窄带入口。例如，从均衡器输出的信号的分析提供了均衡器的总频率响应的确定。此外，可以使用均衡器的FFE和DFE中的一个或两个内的相应均衡器系数的分析来确定均衡器的总体频率响应。当FFE（其中有凹口）和DFE的组合提供整体平坦的频率响应时，可以识别窄带入口。

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