-
公开(公告)号：US09413490B2
公开(公告)日：2016-08-09
申请号：US13916342
申请日：2013-06-12
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze
CPC classification number: H04L1/0041 , H04L1/0045 , H04L1/0058 , H04L1/0066
Abstract: An outer encoder encodes input data signal to generate a first encoded signal. An inner encoder encodes a subset of the input data to generate a second encoded signal, wherein the inner encoder has a different forward error correction (FEC) than the outer encoder. A symbol mapper processes the first encoded signal and the second encoded signal to generate a sequence of discrete-valued modulation symbols.
Abstract translation: 外部编码器对输入数据信号进行编码以产生第一编码信号。 内编码器编码输入数据的子集以产生第二编码信号，其中内编码器具有与外编码器不同的前向纠错（FEC）。 符号映射器处理第一编码信号和第二编码信号以产生离散值调制符号序列。
-
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.
-
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。
-
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.
-
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.
-
Patent Agency Ranking
公开(公告)号：US20130251019A1
公开(公告)日：2013-09-26
申请号：US13848169
申请日：2013-03-21
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze
IPC: H04L25/03
CPC classification number: H04L25/03885 , H04L25/03343 , H04L25/03987 , H04L2025/03426 , H04L2025/03471 , H04L2025/03566
Abstract: Sparse equalizer system. One or more multiple tapped delay lines (e.g., equalizers and/or pre-equalizers) are implemented to service one or more respective channels with which a communication device operates to support communications with at least one other communication device. Adaptive selection of which subsets of taps of the one or more multiple tapped delay lines is made to control those particular taps of which contribute to one or more subsequent slicer inputs. Those taps which are not currently operating to contribute to the slicer input may undergo processing, updating, etc. in parallel with or simultaneously with the processing of a signal to generate the outputs to be provided to the one or more subsequent slicers.
Abstract translation: 稀疏均衡系统。 实现一个或多个多个抽头延迟线（例如，均衡器和/或预均衡器）来服务一个或多个相应的通道，通信设备利用这些通道运行以支持与至少一个其他通信设备的通信。 对一个或多个多个抽头延迟线的抽头子集进行自适应选择，以控制这些特定抽头有助于一个或多个后续限幅器输入。 那些当前不工作以对切片机输入贡献的抽头可以与信号的处理并行或同时处理，更新等，以产生要提供给一个或多个后续限幅器的输出。
-
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。
-
公开(公告)号：US09049069B2
公开(公告)日：2015-06-02
申请号：US13848169
申请日：2013-03-21
Applicant: BROADCOM CORPORATION
Inventor： Thomas J. Kolze , Richard Stephen Prodan
CPC classification number: H04L25/03885 , H04L25/03343 , H04L25/03987 , H04L2025/03426 , H04L2025/03471 , H04L2025/03566
Abstract: A sparse equalizer system is disclosed. One or more multiple tapped delay lines (e.g., equalizers and/or pre-equalizers) are implemented to service one or more respective channels with which a communication device operates to support communications with at least one other communication device. Adaptive selection of which subsets of taps of the one or more multiple tapped delay lines is made to control those particular taps of which contribute to one or more subsequent slicer inputs. Those taps which are not currently operating to contribute to the slicer input may undergo processing, updating, etc. in parallel with or simultaneously with the processing of a signal to generate the outputs to be provided to the one or more subsequent slicers.
Abstract translation: 公开了稀疏均衡器系统。 实现一个或多个多个抽头延迟线（例如，均衡器和/或预均衡器）来服务一个或多个相应的通道，通信设备利用这些通道运行以支持与至少一个其他通信设备的通信。 对一个或多个多个抽头延迟线的抽头子集进行自适应选择，以控制这些特定抽头有助于一个或多个后续限幅器输入。 那些当前不工作以对切片机输入贡献的抽头可以与信号的处理并行或同时处理，更新等，以产生要提供给一个或多个后续限幅器的输出。
-
公开(公告)号：US20150139290A1
公开(公告)日：2015-05-21
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.
-
10.发明申请Spectrum analysis capability in network and/or system communication devices 审中-公开网络和/或系统通信设备中的频谱分析能力公开(公告)号：US20150078194A1
公开(公告)日：2015-03-19
申请号：US14551313
申请日：2014-11-24
Applicant: BROADCOM CORPORATION
Inventor： Bruce J. Currivan , Roger Fish , Harold Raymond Whitehead , Thomas J. Kolze
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.
Abstract translation: 频谱分析（SA）能力包括在通信网络内的各种通信设备中。 一个或多个设备使用来自系统中其他设备的SA信息来确定系统中的设备的各种通信链路的状态。 一个或多个设备内的一个或多个处理器可以识别系统内各种组件的任何实际/现有或预期的故障或劣化。 这样的组件可以包括通信设备，通信信道或链路，接口，互连等。当识别出实际/现有或预期的故障或劣化时，受影响的组件可以被服务，或者系统内的设备可以操作以减轻性能的任何降低 造成这种问题。 这样的SA功能/能力可以在一个通信设备中或以分布式方式跨越通信系统中的多个设备来实现。
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.022 seconds)
