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1. 发明申请

US20150046775A1 Encoding and Decoding Schemes to Achieve Standard Compliant Mean Time to False Packet Acceptance 审中-公开
标题翻译：编码和解码方案达到标准符合平均时间到错误包接收
公开(公告)号：US20150046775A1
公开(公告)日：2015-02-12
申请号：US14454393
申请日：2014-08-07
申请人： Broadcom Corporation
发明人： Richard Prodan , Bazhong Shen , Mark Laubach
IPC分类号： H04L1/00 , H03M13/11 , H04B10/27
CPC分类号： H04L1/0076 , H03M13/09 , H03M13/1102 , H03M13/2906 , H04L1/0041 , H04L1/0061 , H04Q11/0067
摘要： Systems and methods for enabling encoding/decoding schemes that satisfy the IEEE 802.3 Mean Time To False Packet Acceptance (MTTFPA) requirement in an Ethernet Passive Optical Network over Coax (EPoC) are described. The proposed encoding/decoding schemes assume existing Medium Access Control (MAC) layer Cyclic Redundancy Check (CRC) encoding/decoding, thereby requiring no changes in the Ethernet Passive Optical Network (EPON) MAC protocol, but increase error protection in the EPoC physical layer (PHY) to meet the MTTFPA requirement without sacrificing desired Ethernet frame loss ratios and downstream/upstream data rates for EPoC.
摘要翻译：描述了以太网无源光网络（EPoC）中满足IEEE 802.3平均故障间隔验收（MTTFPA）要求的编码/解码方案的系统和方法。所提出的编码/解码方案采用现有的媒体访问控制（MAC）层循环冗余校验（CRC）编码/解码，从而不需要改变以太网无源光网络（EPON）MAC协议，但增加EPoC物理层中的错误保护（PHY），以满足MTTFPA要求，而不牺牲EPoC所需的以太网帧丢失率和下行/上行数据速率。

2. 发明授权

US09287897B2 Systematic rate-independent Reed-Solomon erasure codes 有权
标题翻译：系统速率独立的Reed-Solomon擦除码
公开(公告)号：US09287897B2
公开(公告)日：2016-03-15
申请号：US13754334
申请日：2013-01-30
申请人： Broadcom Corporation
发明人： Bazhong Shen , Erik Stauffer
IPC分类号： H03M13/45 , H03M13/15 , H03M13/35 , H03M13/00 , H03M13/53 , H03M13/37
CPC分类号： H03M13/15 , H03M13/1515 , H03M13/353 , H03M13/373 , H03M13/6516
摘要： 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.
摘要翻译：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。

3. 发明授权

US10644839B2 Codeword puncturing for varying code rates 有权
公开(公告)号：US10644839B2
公开(公告)日：2020-05-05
申请号：US15259006
申请日：2016-09-07
申请人： BROADCOM CORPORATION
发明人： Bazhong Shen , Payam Torab Jahromi
IPC分类号： H04L1/00 , H03M13/00 , H03M13/35 , H03M13/11
CPC分类号： H04L1/0068 , H03M13/1102 , H03M13/353 , H03M13/6356 , H04L1/0041 , H04L1/0057
摘要： 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.

4. 发明授权

US10027471B2 Synchronization and training stage operation 有权
公开(公告)号：US10027471B2
公开(公告)日：2018-07-17
申请号：US14795840
申请日：2015-07-09
申请人： BROADCOM CORPORATION
发明人： Chung Ming Tu , Peiqing Wang , Ahmad Chini , Yencheng Chen , Mehmet Vakif Tazebay , Bazhong Shen
IPC分类号： H04L7/10 , H04L12/413 , H04L7/04
摘要： 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.

5. 发明授权

US09548836B2 Upstream burst noise detection 有权
标题翻译：上游突发噪声检测
公开(公告)号：US09548836B2
公开(公告)日：2017-01-17
申请号：US14137345
申请日：2013-12-20
申请人： Broadcom Corporation
发明人： Yitshak Ohana , Avi Kliger , Anatoli Shindler , Bazhong Shen
IPC分类号： H04B15/00 , H04L1/00 , H04L1/20
CPC分类号： H04L1/0054 , H04L1/0047 , H04L1/0057 , H04L1/20
摘要： 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.
摘要翻译：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。

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