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1.发明授权Adaptive equalization and interference cancellation with time-varying noise and/or interference 有权具有时变噪声和/或干扰的自适应均衡和干扰消除公开(公告)号：US08891709B2
公开(公告)日：2014-11-18
申请号：US13451199
申请日：2012-04-19
CPC分类号： H04L25/03019 , H04L1/0056 , H04L25/03038 , H04L25/03057 , H04L25/03286 , H04L25/067 , H04L2025/03496 , H04L2025/03617
摘要： A method and apparatus is disclosed to compensate for interference and/or distortion impressed onto a transmitted communication signal in the presence of one or more time-varying noise and/or interference conditions. A communications receiver includes a noise analyzer to characterize the composition of the interference and/or the distortion and produce a selection signal indicating the composition of the interference and/or the distortion. The communications receiver selects at least one set of equalization coefficients and/or updates at least one parameter of a least-squares algorithm or the suitable equivalent algorithm to compensate for the interference and/or the distortion impressed onto a transmitted communication signal in the presence of a particular time-varying noise and/or interference condition.
摘要翻译： 公开了一种方法和装置，用于在存在一个或多个时变噪声和/或干扰条件的情况下，补偿所发送的通信信号上的干扰和/或失真。 通信接收机包括噪声分析器，用于表征干扰的组成和/或失真，并产生指示干扰的组成和/或失真的选择信号。 通信接收机选择至少一组均衡系数和/或更新最小二乘法算法的至少一个参数或合适的等效算法来补偿在存在发射通信信号的情况下所施加的干扰和/或失真 特定的时变噪声和/或干扰条件。
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2.发明授权公开(公告)号：US08891699B2
公开(公告)日：2014-11-18
申请号：US13428698
申请日：2012-03-23
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。
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公开(公告)号：US08718589B2
公开(公告)日：2014-05-06
申请号：US13174471
申请日：2011-06-30
申请人： Ramon Alejandro Gomez , Bruce J. Currivan , Massimo Brandolini , Young Shin , Francesco Gatta , Hanli Zou , Loke Kun Tan , Lin He , Thomas Joseph Kolze , Leonard Dauphinee , Robindra Joshi , Binning Chen
发明人： Ramon Alejandro Gomez , Bruce J. Currivan , Massimo Brandolini , Young Shin , Francesco Gatta , Hanli Zou , Loke Kun Tan , Lin He , Thomas Joseph Kolze , Leonard Dauphinee , Robindra Joshi , Binning Chen
IPC分类号： H04B1/10
CPC分类号： H04J11/004 , H04L25/03006 , H04L27/2647
摘要： Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.
摘要翻译： 公开了基本上补偿通信接收器内的各种不希望的干扰和/或失真的方法和装置。 这些装置和方法中的每一个估计通信接收机内的各种不希望的干扰和/或失真。 这些装置和方法中的每一个都从通信接收器内的一个或多个通信信号中去除通信接收器内的各种不必要的干扰和/或失真的估计，以基本上补偿各种不希望的干扰和/或失真。
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公开(公告)号：US08624952B2
公开(公告)日：2014-01-07
申请号：US12755221
申请日：2010-04-06
申请人： Bruce J. Currivan , Xuemin Chen
发明人： Bruce J. Currivan , Xuemin Chen
IPC分类号： H04N7/14
摘要： Herein described is a system and method for modifying facial video transmitted from a first videophone to a second videophone during a videophone conversation. A videophone comprises a videophone image processing system (VIPS) that stores one or more preferred images. The one or more preferred images may comprise an image of a person presented in an attractive appearance. The one or more preferred images may comprise one or more avatars. Additionally, the VIPS may be used to incorporate one or more facial features of the person into a preferred image or avatar. Furthermore, a replacement background may be incorporated into the preferred image or avatar. The VIPS transmits a preferred image of a first speaker of a first videophone to a second speaker of a second videophone by capturing an actual image of the first speaker and substituting at least a portion of said actual image with a stored image.
摘要翻译： 这里描述了一种用于在视频电话会话期间修改从第一可视电话传输到第二可视电话的面部视频的系统和方法。 视频电话包括存储一个或多个优选图像的可视电话图像处理系统（VIPS）。 一个或多个优选图像可以包括呈现在有吸引力的外观中的人的图像。 一个或多个优选图像可以包括一个或多个化身。 此外，VIPS可以用于将该人的一个或多个面部特征并入优选图像或化身。 此外，替换背景可以并入优选图像或化身。 VIPS通过捕获第一扬声器的实际图像并用存储的图像代替所述实际图像的至少一部分来将第一可视电话的第一扬声器的优选图像发送到第二可视电话的第二扬声器。
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公开(公告)号：US08618968B2
公开(公告)日：2013-12-31
申请号：US13349107
申请日：2012-01-12
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。
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公开(公告)号：US08555134B2
公开(公告)日：2013-10-08
申请号：US13613328
申请日：2012-09-13
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。
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公开(公告)号：US08472541B2
公开(公告)日：2013-06-25
申请号：US13118430
申请日：2011-05-29
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.
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公开(公告)号：US08427349B2
公开(公告)日：2013-04-23
申请号：US13228301
申请日：2011-09-08
申请人： Ramon Alejandro Gomez , Loke Kun Tan , Bruce J. Currivan , Steven T. Jaffe , Thomas Joseph Kolze , Lin He
发明人： Ramon Alejandro Gomez , Loke Kun Tan , Bruce J. Currivan , Steven T. Jaffe , Thomas Joseph Kolze , Lin He
IPC分类号： H03M1/06
摘要： A method and apparatus is disclosed to compensate for impairments within a data converter such that its output is a more accurate representation of its input. The data converter includes a main data converter, a reference data converter, and a correction module. The main data converter may be characterized as having the impairments. As a result, the output of the main data converter is not the most accurate representation of its input. The reference data converter is designed such that the impairments are not present. The correction module estimates the impairments present within the main data converter using its output and the reference data converter to generate corrections coefficients. The correction module adjusts the output of the main data converter using the corrections coefficients to improve the performance of the data converter.
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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.
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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。
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