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11.发明申请公开(公告)号：US20140181611A1
公开(公告)日：2014-06-26
申请号：US14194922
申请日：2014-03-03
Applicant: Broadcom Corporation
Inventor： Bruce J. Currivan , Thomas J. Kolza , Daniel H. Howard , Thomas J. Quigley , Nambi Seshadri , Thomas L. Johnson , Scott Cummings , James Harrell , Fred Bunn , Joel Danzig , Stephen Hughey
IPC: H04L1/08
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：US20140003545A1
公开(公告)日：2014-01-02
申请号：US13923453
申请日：2013-06-21
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Gottfried Ungerboeck
IPC: H04L27/34
CPC classification number: H04L27/3411 , H04B1/71 , H04B1/7107 , H04B7/216 , H04L25/03038 , H04L25/03343 , H04L25/49 , H04L27/3405 , H04L2025/03375 , H04L2025/03477 , H04N7/17309 , H04N21/42676
Abstract: 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：US08571155B2
公开(公告)日：2013-10-29
申请号：US13849130
申请日：2013-03-22
Applicant: Broadcom Corporation
Inventor： Thomas J. Kolze , Bruce J. Currivan , Ramon A. Gomez
IPC: H04B1/10
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.
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公开(公告)号：US20150263772A1
公开(公告)日：2015-09-17
申请号：US14665890
申请日：2015-03-23
Applicant: BROADCOM CORPORATION
Inventor： Ramon Alejandro Gomez , Bruce J. Currivan , Steven T. Jaffe , Loke Kun Tan , Young Shin , Hanli Zou , Lin He , Leonard Dauphinee , Thomas Joseph Kolze , Francesco Gatta
CPC classification number: H04B1/16 , H04B1/0003 , H04B1/3805 , H04B17/20
Abstract: A method and apparatus is disclosed to determine communications receiver parameters from multiple channels of a received communications signal and to configure and/or adjust communications receiver parameters to acquire one or more channels from among the multiple channels of the received communications signal. A communications receiver observes a multi-channel communication signal as it passes through a communication channel. The communications receiver determines one or more communications receiver parameters from the multiple channels of the received communications signal. The communications receiver configures and/or adjusts communications receiver parameters to acquire the one or more channels from among the multiple channels of the received communications signal.
Abstract translation: 公开了一种方法和装置，用于从接收到的通信信号的多个信道中确定通信接收机参数，并且配置和/或调整通信接收机参数以从所接收的通信信号的多个信道中获取一个或多个信道。 通信接收机在通过通信信道时观察多信道通信信号。 通信接收机从接收到的通信信号的多个信道确定一个或多个通信接收机参数。 通信接收机配置和/或调整通信接收机参数以从所接收的通信信号的多个信道中获取一个或多个信道。
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公开(公告)号：US08774300B2
公开(公告)日：2014-07-08
申请号：US13923453
申请日：2013-06-21
Applicant: Broadcom Corporation
Inventor： Bruce J. Currivan , Thomas J. Kolze , Daniel H. Howard , Gottfried Ungerboeck
IPC: H04L27/28
CPC classification number: H04L27/3411 , H04B1/71 , H04B1/7107 , H04B7/216 , H04L25/03038 , H04L25/03343 , H04L25/49 , H04L27/3405 , H04L2025/03375 , H04L2025/03477 , H04N7/17309 , H04N21/42676
Abstract: 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.
Abstract translation: 衰减传输条件下的信号处理。 在正交信号空间内，减少了用于从发射机向接收机发送信息的正交信号的数量，并且修改了现在剩余的正交信号中的每一个的发射功率; 这可能涉及增加所有剩余的正交信号的功率，或者可以分别修改它们。 在还原之前使用的相同调制也可以随后使用; 在具有多个发射机 - 接收机路径的通信系统内，即使当一个（或多个）发射机 - 接收机路径被高度衰减时，这将确保通信系统的吞吐量和效率将保持不变。 另外，提供鲁棒模式操作，用于在进入通信系统时测距和注册发射机设备。 此外，可以采用未使用的正交信号来支持用于发送信息的那些正交信号的干扰消除。
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Patent Agency Ranking
公开(公告)号：US20140177750A1
公开(公告)日：2014-06-26
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：US20130239164A1
公开(公告)日：2013-09-12
申请号：US13887932
申请日：2013-05-06
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze , Robbert van der Wal , Bruce J. Currivan
IPC: H04N21/63
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.
Abstract translation: 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。
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公开(公告)号：US09509416B2
公开(公告)日：2016-11-29
申请号：US14032359
申请日：2013-09-20
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Thomas J. Kolze
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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公开(公告)号：US09461683B2
公开(公告)日：2016-10-04
申请号：US14665890
申请日：2015-03-23
Applicant: BROADCOM CORPORATION
Inventor： Ramon Alejandro Gomez , Bruce J. Currivan , Steven T. Jaffe , Loke Kun Tan , Young Shin , Hanli Zou , Lin He , Leonard Dauphinee , Thomas Joseph Kolze , Francesco Gatta
IPC: H04B1/16 , H04B1/00 , H04B1/3805 , H04B17/20
CPC classification number: H04B1/16 , H04B1/0003 , H04B1/3805 , H04B17/20
Abstract: A method and apparatus is disclosed to determine communications receiver parameters from multiple channels of a received communications signal and to configure and/or adjust communications receiver parameters to acquire one or more channels from among the multiple channels of the received communications signal. A communications receiver observes a multi-channel communication signal as it passes through a communication channel. The communications receiver determines one or more communications receiver parameters from the multiple channels of the received communications signal. The communications receiver configures and/or adjusts communications receiver parameters to acquire the one or more channels from among the multiple channels of the received communications signal.
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公开(公告)号：US09277288B2
公开(公告)日：2016-03-01
申请号：US13785446
申请日：2013-03-05
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan
CPC classification number: H04N21/61 , H04B1/1018
Abstract: The present invention is directed to systems and method for attenuating intermodulation interference. In particular, methods and systems to attenuate intermodulation interference contained within an aggregate signal having a transmitted signal that was transmitted over a communications channel having channel effects that produce the intermodulation interference are provided. The communications channel may be a cable television distribution network and the signal may be a cable television signal. A method is provided to predict when intermodulation interference will be large, so that actions within a receiver can be taken to reduce the impact of the interference and improve overall receiver performance.
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