公开(公告)号：US09088455B2

公开(公告)日：2015-07-21

申请号：US14104044

申请日：2013-12-12

Applicant: BROADCOM CORPORATION

Inventor： Hong Liu ,  Avi Kliger ,  Jeffrey S. Putnam ,  Leo Montreuil ,  Jonathan S. Min ,  Ravi Rajagopal

IPC: H04L27/28 ,  H04B17/00 ,  H04L29/06 ,  H04L27/26

CPC classification number: H04L27/2607 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/2634 ,  H04L27/2684 ,  H04L27/2697 ,  H04L29/0653

Abstract: A communication device is operative to generate and orthogonal frequency division multiplexing (OFDM) symbol that includes one or more data and ranging modulation symbols. The data and ranging modulation symbols may be included within different sub-carriers of the OFDM symbol. The OFDM symbol is used to generate an OFDM symbol pair in the frequency domain (FDOM). After conversion from the FDOM to the time domain (TDOM), the OFDM symbol pair may then undergoes post-processing in the TDOM before transmission. Such post-processing may include the addition of cyclic prefix (CP) and cyclic suffix (CS) to the OFDM symbol pair in the TDOM as well as filtering using a window function. The OFDM symbol may be generated as an orthogonal frequency division multiple access (OFDMA) symbol, and two were more OFDM symbols or OFDMA symbols may be arranged in a frame.

公开(公告)号：US09031143B2

公开(公告)日：2015-05-12

申请号：US14069258

申请日：2013-10-31

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Richard S. Prodan ,  Avi Kliger ,  Leo Montreuil ,  Jonathan S. Min ,  Tak K. Lee ,  Kelly Brian Cameron ,  Hau Thien Tran

IPC: H04L1/00 ,  H04L25/03 ,  H04L25/06 ,  H04L27/26

CPC classification number: H04L1/0054 ,  H04L1/0045 ,  H04L25/03159 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2649

Abstract: A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated with the signal (e.g., based on background noise, burst noise, etc.).

Abstract translation: 通信设备被自适应地配置为基于可能在经由通信信道的转换期间不利地影响信号的噪声来处理接收信号。 该设备可以被配置为识别受到噪声影响的信号的信号的那些部分（例如，正交频分复用（OFDM）信号的噪声影响的子载波），或者设备可以接收标识那些 来自一个或多个其他装置的噪声影响的部分信号。 该设备可以被配置为执行接收信号的调制处理，以产生用于解码信号的对数似然比（LLR）。 与信号的噪声影响部分相关联的那些LLR被处理与不受噪声影响的信号的部分相关联的LLR不同。 可以基于与信号相关联的信噪比（SNR（s））来缩放LLR（例如，基于背景噪声，突发噪声等）。

公开(公告)号：US09118444B2

公开(公告)日：2015-08-25

申请号：US14029204

申请日：2013-09-17

Applicant: Broadcom Corporation

Inventor： Avi Kliger ,  Yitshak Ohana ,  Niki Pantelias ,  Leo Montreuil ,  Jonathan S. Min ,  Edward Boyd ,  Mark Laubach ,  Victor Hou

IPC: H04B1/38 ,  H04L5/00

CPC classification number: H04L69/323 ,  H04L5/0046 ,  H04L5/0057 ,  H04L5/0092 ,  H04L5/0094 ,  H04L12/2861 ,  H04L27/2602 ,  H04L27/2627 ,  H04N21/42676 ,  H04N21/6118

Abstract: Embodiments include systems and methods for enabling a physical layer (PHY) link signaling channel between a network termination modem and a cable modem in a cable network. The PHY link signaling channel is embedded within the same multi-carrier channel as the data and enables PHY link up between the network termination modem and cable modem without involvement of higher layers (e.g., MAC). The PHY link signaling channel can be implemented in the downstream (from the network termination modem to the cable modem(s)) or in the upstream from a cable modem to the network termination modem. Embodiments are applicable to any known cable network, and particularly to cable networks implementing the DOCSIS and EPoC standards.

Abstract translation: 实施例包括用于在电缆网络中实现网络终端调制解调器和电缆调制解调器之间的物理层（PHY）链路信令信道的系统和方法。 PHY链路信令信道被嵌入在与数据相同的多载波信道中，并且使得PHY能够在网络终端调制解调器和电缆调制解调器之间链接，而不涉及较高层（例如，MAC）。 PHY链路信令信道可以在下游（从网络终端调制解调器到电缆调制解调器）或在电缆调制解调器的上游到网络终端调制解调器。 实施例可应用于任何已知的有线网络，特别适用于实现DOCSIS和EPoC标准的有线网络。

公开(公告)号：US09301310B2

公开(公告)日：2016-03-29

申请号：US13933510

申请日：2013-07-02

Applicant: Broadcom Corporation

Inventor： Thomas J. Quigley ,  Jonathan S. Min ,  Lisa V. Denney ,  Henry Samueli ,  Sean F. Nazareth ,  Feng Chen ,  Fang Lu ,  Christopher R. Jones

IPC: H04W72/08 ,  H04J3/06 ,  H04L1/00 ,  H04L5/00 ,  H04L5/14 ,  H04L12/28 ,  H04L27/26 ,  H04L27/34 ,  H04L1/20 ,  H04B1/10 ,  H04L25/03 ,  H04L27/00

CPC classification number: H04L41/142 ,  H04B1/1027 ,  H04B1/1036 ,  H04J3/0655 ,  H04J3/0682 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/203 ,  H04L5/003 ,  H04L5/1446 ,  H04L12/2801 ,  H04L25/03019 ,  H04L25/03057 ,  H04L25/03343 ,  H04L27/0014 ,  H04L27/2601 ,  H04L27/34 ,  H04L2025/03808 ,  H04W72/085 ,  Y02D50/10

Abstract: A number of features for enhancing the performance of a communication system, in which data is transmitted between a base station and a plurality of subscriber stations located different distances from the base station, are presented. The power transmission level, slot timing, and equalization of the subscriber stations are set by a ranging process. Data is transmitted by the subscriber stations in fragmented form. Various measures are taken to make transmission from the subscriber stations robust. The uplink data transmission is controlled to permit multiple access from the subscriber stations.

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

IPC: H04L25/02 ,  H04L25/03

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.

公开(公告)号：US20140153673A1

公开(公告)日：2014-06-05

申请号：US14069258

申请日：2013-10-31

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Richard S. Prodan ,  Avi Kliger ,  Leo Montreuil ,  Jonathan S. Min ,  Tak K. Lee ,  Kelly Brian Cameron ,  Hau Thien Tran

IPC: H04L1/00 ,  H04L27/26

CPC classification number: H04L1/0054 ,  H04L1/0045 ,  H04L25/03159 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2649

Abstract: A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated with the signal (e.g., based on background noise, burst noise, etc.).

Abstract translation: 通信设备被自适应地配置为基于可能在经由通信信道的转换期间不利地影响信号的噪声来处理接收信号。 该设备可以被配置为识别受到噪声影响的信号的信号的那些部分（例如，正交频分复用（OFDM）信号的噪声影响的子载波），或者设备可以接收标识那些 来自一个或多个其他装置的噪声影响的部分信号。 该设备可以被配置为执行接收信号的调制处理，以产生用于解码信号的对数似然比（LLR）。 与信号的噪声影响部分相关联的那些LLR被处理与不受噪声影响的信号的部分相关联的LLR不同。 可以基于与信号相关联的信噪比（SNR（s））来缩放LLR（例如，基于背景噪声，突发噪声等）。

公开(公告)号：US20130294377A1

公开(公告)日：2013-11-07

申请号：US13933510

申请日：2013-07-02

Applicant: Broadcom Corporation

Inventor： Thomas J. QUIGLEY ,  Jonathan S. Min ,  Lisa V. Denney ,  Henry Samueli ,  Sean F. Nazareth ,  Feng Chen ,  Fang Lu ,  Christopher R. Jones

IPC: H04W72/08

CPC classification number: H04L41/142 ,  H04B1/1027 ,  H04B1/1036 ,  H04J3/0655 ,  H04J3/0682 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/203 ,  H04L5/003 ,  H04L5/1446 ,  H04L12/2801 ,  H04L25/03019 ,  H04L25/03057 ,  H04L25/03343 ,  H04L27/0014 ,  H04L27/2601 ,  H04L27/34 ,  H04L2025/03808 ,  H04W72/085 ,  Y02D50/10

Abstract: A number of features for enhancing the performance of a communication system, in which data is transmitted between a base station and a plurality of subscriber stations located different distances from the base station, are presented. The power transmission level, slot timing, and equalization of the subscriber stations are set by a ranging process. Data is transmitted by the subscriber stations in fragmented form. Various measures are taken to make transmission from the subscriber stations robust. The uplink data transmission is controlled to permit multiple access from the subscriber stations.

Abstract translation: 提供了用于增强在基站与位于距离基站不同距离的多个用户站之间传送数据的通信系统的性能的许多特征。 用户站的功率传输级别，时隙定时和均衡由测距过程来设置。 数据由用户站以分段形式传输。 采取各种措施使得用户站的传输稳健。 控制上行链路数据传输以允许来自订户站的多次接入。