公开(公告)号：US20160365967A1

公开(公告)日：2016-12-15

申请号：US14795840

申请日：2015-07-09

Applicant: BROADCOM CORPORATION

Inventor： Chung Ming TU ,  Peiqing WANG ,  Ahmad CHINI ,  Yencheng CHEN ,  Mehmet Vakif TAZEBAY ,  Bazhong SHEN

IPC: H04L7/00

CPC classification number: H04L7/10 ,  H04L7/048 ,  H04L12/413

Abstract: A primary device implementing the subject system of link establishment for single pair Ethernet may include at least one processor circuit. The at least one processor circuit may be configured to transmit a first synchronization sequence to a secondary device and to subsequently detect a second synchronization sequence, different than the first, transmitted by the secondary device. The synchronization sequences may be pseudo-noise sequences that have strong autocorrelation characteristics. The at least one processor circuit may be configured to wait a predetermined amount of time after completing the detection of the second synchronization sequence, and then may initiate a training stage. The training stage may include exchanging scrambler states of additive scramblers used by the primary and secondary devices. The at least one processor circuit may be configured to enter a data mode upon completion of training. In the data mode, data is forward error correction encoded and then scrambled.

Abstract translation: 实现单对以太网链路建立的主题系统的主要装置可以包括至少一个处理器电路。 至少一个处理器电路可以被配置为将第一同步序列发送到辅助设备，并且随后检测由辅助设备发送的与第一同步序列不同的第二同步序列。 同步序列可以是具有强自相关特性的伪噪声序列。 至少一个处理器电路可以被配置为在完成第二同步序列的检测之后等待预定量的时间，然后可以启动训练阶段。 训练阶段可以包括交换由主设备和次设备使用的加法器扰频器的扰频器状态。 所述至少一个处理器电路可以被配置为在完成训练时进入数据模式。 在数据模式下，数据进行前向纠错编码，然后加扰。

公开(公告)号：US20150146827A1

公开(公告)日：2015-05-28

申请号：US14137345

申请日：2013-12-20

Applicant: Broadcom Corporation

Inventor： Yitshak OHANA ,  Avi KLIGER ,  Anatoli SHINDLER ,  Bazhong SHEN

IPC: H04L1/00 ,  H04B1/10

CPC classification number: H04L1/0054 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/20

Abstract: The present disclosure is directed to a system and method for detecting burst noise. The system and method are described in the exemplary context of a cable modem system and can be used in such a system to specifically detect upstream burst noise. Once detected, the system and method can adjust the upstream receiver that receives data corrupted by the upstream burst noise to reduce the potentially deleterious effects that the burst noise can have on, for example, the packet error rate and/or data rate of the upstream receiver.

Abstract translation: 本公开涉及用于检测突发噪声的系统和方法。 在电缆调制解调器系统的示例性上下文中描述了系统和方法，并且可以在这种系统中用于专门检测上游突发噪声。 一旦检测到，系统和方法可以调整接收由上游突发噪声损坏的数据的上游接收机，以减少突发噪声可能产生的潜在的有害影响，例如上行的分组错误率和/或数据速率 接收器。

公开(公告)号：US20130198582A1

公开(公告)日：2013-08-01

申请号：US13750280

申请日：2013-01-25

Applicant: Broadcom Corporation

Inventor： Erik STAUFFER ,  Bazhong SHEN ,  Djordje TUJKOVIC ,  Soumen CHAKRABORTY ,  Jing HUANG ,  Shiv Prakash SHET ,  Kamlesh RATH ,  David GARRETT ,  Andrew BLANKSBY

IPC: H03M13/29

CPC classification number: H03M13/2906 ,  H04L1/0042 ,  H04L1/0057 ,  H04L1/08

Abstract: A system and method is provided for encoding k input symbols into a longer stream of n output symbols for transmission over an erasure channel such that the original k input symbols can be recovered from a subset of the n output symbols without the need for any retransmission. A symbol is a generic data unit, consisting of one or more bits, that can be, for example, a packet. The system and method utilize a network of erasure codes, including block codes and parallel filter codes to achieve performance very close to the ideal MDS code with low encoding and decoding computational complexity for both small and large encoding block sizes. This network of erasure codes is referred to as a supercharged code. The supercharged code can be used to provide packet-level protection at, for example, the network, application, or transport layers of the Internet protocol suite.

Abstract translation: 提供了一种系统和方法，用于将k个输入符号编码为n个输出符号的较长流以在擦除信道上传输，使得可以从n个输出符号的子集中恢复原始k个输入符号，而不需要任何重传。 符号是由一个或多个比特组成的通用数据单元，其可以是例如分组。 该系统和方法利用擦除代码网络，包括块代码和并行滤波器代码，以实现非常接近理想MDS码的性能，对于小型和大型编码块大小，具有低编码和解码计算复杂度。 这种擦除代码网络被称为增值代码。 增值代码可用于在例如因特网协议组的网络，应用或传输层提供分组级保护。

公开(公告)号：US20170207881A1

公开(公告)日：2017-07-20

申请号：US15259006

申请日：2016-09-07

Applicant: BROADCOM CORPORATION

Inventor： Bazhong SHEN ,  Payam TORAB JAHROMI

IPC: H04L1/00 ,  H03M13/00

CPC classification number: H04L1/0068 ,  H03M13/1102 ,  H03M13/353 ,  H03M13/6356 ,  H04L1/0041 ,  H04L1/0057

Abstract: A system of codeword puncturing for varying code rates may include at least one transmitter circuit. The at least one transmitter circuit may be configured to perform error correction coding to generate codewords at a first code rate. The at least one transmitter circuit may be further configured to puncture a number of bits from a location within each of the codewords to implement a second code rate that is greater than the first code rate. The at least one transmitter circuit may be further configured to provide the punctured codewords for transmission. The device may further include at least one receiver circuit that may be configured to receive bit sequences comprising received punctured codewords. The at least one receiver circuit may be further configured to insert bits into the bit sequences to compensate for the puncturing and perform error correction decoding on the bit sequences including the inserted bits.

公开(公告)号：US20130198583A1

公开(公告)日：2013-08-01

申请号：US13754334

申请日：2013-01-30

Applicant: Broadcom Corporation

Inventor： Bazhong SHEN ,  Erik Stauffer

IPC: H03M13/15

CPC classification number: H03M13/15 ,  H03M13/1515 ,  H03M13/353 ,  H03M13/373 ,  H03M13/6516

Abstract: The present disclosure is directed to a system and method for encoding k input symbols, using a Reed-Solomon erasure correction code, into a longer stream of n output symbols for transmission over an erasure channel. The present disclosure is further directed to a system and method for recovering the original k input symbols from only (and any) k output symbols (out of the n output symbols) received over the erasure channel. A symbol is a generic data unit consisting of one or more bits that can be, for example, a packet. The systems and methods of the present disclosure provide for an adjustable code rate that can be readily adapted based on changing channel conditions without having to reconstruct the encoder/decoder. As a result, such an encoder/decoder can be referred to as rate-independent.

Abstract translation: 本公开涉及一种用于使用Reed-Solomon消除校正码将k个输入符号编码到较长的n个输出符号流中以便在擦除信道上传输的系统和方法。 本公开进一步涉及用于仅从通过擦除信道接收的（和任何）k个输出符号（在n个输出符号中）恢复原始k个输入符号的系统和方法。 符号是由一个或多个比特组成的通用数据单元，其可以是例如分组。 本公开的系统和方法提供了可以基于改变信道条件容易地适应的可调节码率，而不必重建编码器/解码器。 结果，这样的编码器/解码器可以被称为速率无关。