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1.发明授权公开(公告)号：US09350491B2
公开(公告)日：2016-05-24
申请号：US14194922
申请日：2014-03-03
Applicant: Broadcom Corporation
Inventor： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Thomas J. Quigley , Nambi Seshadri , Thomas L. Johnson , Scott Cummings , James Harrell , Fred Bunn , Joel Danzig , Stephen Hughey
IPC: H04L1/00 , H04L1/08 , H03M13/27 , H03M13/29 , H04L1/16 , H04L1/18 , H03M13/09 , H03M13/15 , H03M13/19
CPC classification number: H04L1/08 , H03M13/09 , H03M13/098 , H03M13/1515 , H03M13/19 , H03M13/2707 , H03M13/2915 , H04L1/0065 , H04L1/16 , H04L1/1812 , H04L1/1877
Abstract: A system, method and computer program product is provided for mitigating the effects of burst noise on packets transmitted in a communications system. A transmitting device applies an outer code, which may include, for example, a block code, an exclusive OR (XOR) code, or a repetition code, to one or more packets prior to adaptation of the packets for transmission over the physical (PHY) layer of the communications system, wherein the PHY layer adaptation may include FEC encoding of individual packets. The outer coded packets are then separately transmitted over a channel of the communications system. A receiving device receives the outer coded packets, performs PHY level demodulation and optional FEC decoding of the packets, and then applies outer code decoding to the outer coded packets in order to restore packets that were erased during transmission due to burst noise or other impairments on the channel.
Abstract translation: 提供了系统，方法和计算机程序产品，用于减轻突发噪声对在通信系统中传输的分组的影响。 发送设备在适配用于通过物理（PHY）的传输的分组之前，将一个外码（例如包括块码，异或（XOR）码或重复码）应用于一个或多个分组 ）层，其中PHY层适配可以包括各个分组的FEC编码。 外部编码数据包然后通过通信系统的一个通道单独发送。 接收装置接收外部编码包，对分组进行PHY级解调和可选FEC解码，然后将外码解码应用于外编码包，以便恢复由于突发噪声或其他损伤而在传输过程中擦除的数据包 这个频道。
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公开(公告)号：US09203664B2
公开(公告)日：2015-12-01
申请号：US13774861
申请日：2013-02-22
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Thomas J. Kolze
CPC classification number: H04L27/01 , H04L25/03019 , H04L27/38 , H04L2025/0342 , H04L2025/03566
Abstract: Measurement of intermodulation products of digital signals. One or more devices, within a communication system, having and analog to digital converter (ADC) with a sufficiently wide frequency response as to capture not only a signal of interest, but many other signals simultaneously, allows for appropriate signal processing of such captured samples to identify one or more intermodulation products that may exist as a function of the relationship of one or more frequencies. For example, composite second order (CSO) or composite triple beat (CTB), or even higher ordered signals, may occur within various communication systems. These effects may be caused by any of a number of sources including nonlinearities in the system, such as affects associated with laser clipping, amplifier compression, corroded connectors, etc. Appropriate processing is performed determine the existences of such intermodulation product signals, and, if desired, subsequent signal processing and/or fixing of such effects therein is performed.
Abstract translation: 数字信号互调产物的测量。 在通信系统内的一个或多个设备具有具有足够宽的频率响应的模数转换器（ADC），以便不仅捕获感兴趣的信号，而且捕获许多其它信号，同时允许对这些捕获的采样进行适当的信号处理 以识别可以作为一个或多个频率的关系的函数存在的一个或多个互调产物。 例如，可以在各种通信系统内发生复合二阶（CSO）或复合三重拍（CTB）或甚至更高阶的信号。 这些影响可能由包括系统中非线性在内的任何一种源引起，例如与激光削波，放大器压缩，腐蚀连接器等有关的影响。进行适当的处理可以确定这种互调产物信号的存在，如果 执行期望的后续信号处理和/或这样的效果的固定。
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公开(公告)号：US09130790B2
公开(公告)日：2015-09-08
申请号：US14607163
申请日：2015-01-28
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Thomas J. Kolze , Jonathan S. Min , Victor T. Hou
CPC classification number: H04L25/022 , H04L25/03 , H04L25/03006
Abstract: Upstream frequency response measurement and characterization. Signaling is provided between respective communication devices within a communication system. Based upon at least one of these signals, one of the communication devices captures a number of sample sets corresponding thereto at different respective frequencies (e.g., a different respective center frequencies, frequency bands, etc.). Then, spectral analysis is performed with respect to each of the sample sets to generate a respective and corresponding channel response estimate there from. After this number of channel response estimates is determined, they are combined or splice together to generate a full channel response estimate. In implementations including an equalizer, different respective sample sets may correspond to those that have undergone equalization processing and those that have not.
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公开(公告)号：US09020067B2
公开(公告)日：2015-04-28
申请号：US13854172
申请日：2013-04-01
Applicant: Broadcom Corporation
Inventor： Thomas J. Kolze , Bruce J. Currivan , Ramon A. Gomez
CPC classification number: H04B1/10 , H03M1/0614 , H03M1/68
Abstract: Distortion and aliasing reduction for digital to analog conversion. Synthesis of one or more distortion terms made based on a digital signal (e.g., one or more digital codewords) is performed in accordance with digital to analog conversion. The one or more distortion terms may correspond to aliased higher-order harmonics, distortion, nonlinearities, clipping, etc. Such distortion terms may be known a priori, such as based upon particular characteristics of a given device, operational history, etc. Alternatively, such distortion terms may be determined based upon operation of a device and/or based upon an analog signal generated from the analog to conversion process. For example, frequency selective measurements made based on an analog signal generated from the digital to analog conversion may be used for determination of and/or adaptation of the one or more distortion terms. One or more DACs may be employed within various architectures operative to perform digital to analog conversion.
Abstract translation: 数字到模拟转换的失真和混叠减少。 根据数模转换执行基于数字信号（例如，一个或多个数字码字）所做的一个或多个失真项的合成。 一个或多个失真项可以对应于混叠的高阶谐波，失真，非线性，限幅等。这样的失真项可以是先验的，例如基于给定设备的特定特性，操作历史等。或者， 可以基于设备的操作和/或基于从模拟转换处理产生的模拟信号来确定这样的失真项。 例如，基于从数模转换产生的模拟信号进行的频率选择性测量可用于确定和/或调整一个或多个失真项。 可以在可操作以执行数模转换的各种架构内使用一个或多个DAC。
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公开(公告)号：US20140079103A1
公开(公告)日：2014-03-20
申请号：US14032359
申请日：2013-09-20
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Thomas J. Kolze
IPC: H04B15/00
CPC classification number: H04B15/00 , H04J11/0066 , H04L5/0062 , H04L25/0224 , H04L27/2646
Abstract: Many communication systems operate based on orthogonal frequency division multiplexing (OFDM) signaling and/or orthogonal frequency division multiple access (OFDMA) signaling. Within such systems, narrowband interference, which may alternatively be referred to as narrowband ingress, narrowband ingress interference, narrowband noise, etc., may adversely affect one or more subcarriers or tones causing a reduction in performance or even link failure. Such narrowband interference may affect only one or a relatively few tones employed within such communications. When the narrowband interference is identified, a transmission may then be made including one or more information-free tones. A device that receives such a transmission then uses those information-free tones to reduce or cancel the narrowband interference. Such processing may be performed in the frequency-domain, the time domain, or both.
Abstract translation: 许多通信系统基于正交频分复用（OFDM）信令和/或正交频分多址（OFDMA）信令进行操作。 在这样的系统中，窄带干扰（其可替代地被称为窄带进入，窄带入侵干扰，窄带噪声等）可能不利地影响一个或多个子载波或音调，导致性能下降甚至链路故障。 这种窄带干扰可能仅影响在这种通信中使用的一个或相对较少的音调。 当识别出窄带干扰时，可以进行包括一个或多个无信息音调的传输。 接收这种传输的设备然后使用这些无信息的音调来减少或消除窄带干扰。 这样的处理可以在频域，时域或两者中进行。
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Patent Agency Ranking
公开(公告)号：US20130286855A1
公开(公告)日：2013-10-31
申请号：US13931626
申请日：2013-06-28
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Roger Fish , Harold Raymond Whitehead , Thomas J. Kolze
IPC: H04L12/26
CPC classification number: H04L43/50 , H04L1/20 , H04L25/022 , H04L25/0222 , H04L25/03006 , H04L2025/03414
Abstract: Spectrum analysis (SA) capability is included in various communication devices within a communication network. One or more of the devices use the SA information from other devices in the system to determine status of various communication links were devices in the system. One or more processors within one or more devices can identify any actual/existing or expected failure or degradation of the various components within the system. Such components may include communication devices, communication channels or links, interfaces, interconnections, etc. When an actual/existing or expected failure or degradation is identified, the affected components may be serviced or devices within the system may operate to mitigate any reduction in performance caused by such problems. Such SA functionality/capability may be implemented in one communication device or in a distributed manner across a number of devices in a communication system.
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7.发明申请公开(公告)号：US20130279557A1
公开(公告)日：2013-10-24
申请号：US13845884
申请日：2013-03-18
Applicant: Broadcom Corporation
Inventor： Thomas KOLZE , Bruce J. Currivan
IPC: H04B1/10
CPC classification number: H04B1/1027 , H04L1/0056 , H04L25/03019 , H04L25/03038 , H04L25/03057 , H04L25/03286 , H04L2025/03414 , H04L2025/03496 , H04L2025/03617 , H04L2025/03636
Abstract: A communications receiver includes a noise analyzer to characterize the composition of the interference and/or distortion impressed onto a transmitted communications signal in the presence of one or more time-varying conditions. The noise analyzer may provide a selection signal indicating the composition of the interference and/or distortion impressed onto a transmitted communications signal in the presence of one or more time-varying conditions to be used by the communications receiver. In an exemplary embodiment, the communications receiver selects at least one set of filter coefficients to compensate for the interference and/or distortion impressed onto a transmitted communications signal in the presence of a particular time-varying interference and/or distortion condition. In another exemplary embodiment, the communications receiver selects a corresponding interference cancellation filter hank to compensate for the interference and/or distortion impressed onto a transmitted communications signal in the presence of the particular time-varying interference and/or distortion condition.
Abstract translation: 通信接收机包括噪声分析器，用于在存在一个或多个时变条件的情况下表征在所发送的通信信号上施加的干扰和/或失真的组成。 在由通信接收机使用的一个或多个时变条件的情况下，噪声分析器可以提供指示在所发送的通信信号上施加的干扰和/或失真的组成的选择信号。 在示例性实施例中，通信接收器在存在特定的时变干扰和/或失真条件的情况下，选择至少一组滤波器系数来补偿所发射的通信信号上的干扰和/或失真。 在另一个示例性实施例中，通信接收机选择相应的干扰消除滤波器汉克，以在存在特定的时变干扰和/或失真条件的情况下补偿在所发送的通信信号上的干扰和/或失真。
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公开(公告)号：US09380350B2
公开(公告)日：2016-06-28
申请号：US13887932
申请日：2013-05-06
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze , Robbert van der Wal , Bruce J. Currivan
Abstract: 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.
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公开(公告)号：US09049058B2
公开(公告)日：2015-06-02
申请号：US14071883
申请日：2013-11-05
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze , Bruce J. Currivan
CPC classification number: H04L27/0008 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/24 , H04L27/2604 , H04L27/3488 , H04L27/362
Abstract: A communication device is configured to perform symbol mapping of bits to generate modulation symbols using one or more modulations. The device may employ a blended modulation composed of bit labels or symbols having different numbers of bits per symbol and different modulations. For example, the device may symbol map bit labels/symbols having first number of bits per symbol to first modulation, and the device may symbol map labels/symbols having second number of bits per symbol to second modulation. The device may be configured to perform forward error correction (FEC) or error correction code (ECC) and coding of information bits to generate coded bits that subsequently undergo symbol mapping. The device may be configured to operate based on different operational modes based on substantially uniform steps of rates, or bits per symbol, and energy per bit or symbol to noise spectral density ratio (Eb/N0 or Es/N0).
Abstract translation: 通信设备被配置为执行比特的符号映射以使用一个或多个调制来生成调制符号。 该设备可以采用由每个符号和不同调制具有不同位数的位标签或符号组成的混合调制。 例如，设备可以将具有每个符号的第一位数的映射位标签/符号标记为第一调制，并且设备可以将具有每个符号的第二位数的映射标签/符号映射到第二调制。 该设备可以被配置为执行前向纠错（FEC）或纠错码（ECC）以及信息比特的编码以生成随后进行符号映射的编码比特。 该装置可以被配置为基于基本上均匀的速率步长或每个符号的比特以及每比特能量或符号与噪声频谱密度比（Eb / N0或Es / N0），基于不同的操作模式进行操作。
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公开(公告)号：US09042436B2
公开(公告)日：2015-05-26
申请号：US13850527
申请日：2013-03-26
Applicant: Broadcom Corporation
Inventor： Bruce J. Currivan , Loke Tan , Thomas Kolze , Hanli Zou , Lin He
CPC classification number: H04L25/03891 , G06F1/3215 , G06F1/3278 , Y02D10/157 , Y02D50/20
Abstract: An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode.
Abstract translation: 公开了一种用于补偿由通信系统中的发射机，接收机和/或通信信道产生的非线性效应的装置。 通信系统的接收机包含补偿在调制和/或解调过程中产生的图像的图像消除模块。 图像消除模块包括精确的载波校正环路，以校正发射机和接收机之间的频率偏移。 图像消除模块包括粗略采集模式和决策指导模式。 当与粗略采集模式进行比较时，决定导向模式允许接收机具有更大的信噪比。
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