公开(公告)号：US20100287450A1

公开(公告)日：2010-11-11

申请号：US12775825

申请日：2010-05-07

申请人： Takashi Sugihara ,  Takashi Mizuochi ,  Kazuo Kubo

发明人： Takashi Sugihara ,  Takashi Mizuochi ,  Kazuo Kubo

IPC分类号： H03M13/45 ,  G06F11/10 ,  H04B10/06

CPC分类号： H04L25/067

摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.

摘要翻译： 一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n＆nl; m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。 软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据 作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个比特（k比特，其中k比特，其中k和nlE; m）与固定阈值的比较，或者p 从m位接收信号的LSB侧的（m-k）比特中选择的比特（p＆nlE; m-k）。

公开(公告)号：US20100287449A1

公开(公告)日：2010-11-11

申请号：US12767120

申请日：2010-04-26

申请人： Kazuo Kubo ,  Takashi Mizuochi ,  Takashi Sugihara

发明人： Kazuo Kubo ,  Takashi Mizuochi ,  Takashi Sugihara

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/2792 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/2936 ,  H03M13/2966 ,  H04J3/1652 ,  H04J2203/0089 ,  H04L1/0041 ,  H04L1/0065 ,  H04L2001/0096

摘要： An FEC frame structuring device includes a multi-lane distributing unit that distributes a data frame to be transmitted to n lanes, FEC coding units each performs FEC coding of the distributed data frame independently for each of the n lanes to generate an FEC frame, a multiplexing unit that multiplexes the FEC frame from the FEC coding units by relating to m channels of an optical signal, a demultiplexing unit that demultiplexes the m channels of the received optical signal by relating to the n lanes, FEC decoding units each performs FEC decoding of the demultiplexed FEC frame independently for each of the n lanes, and a multi-lane synchronizing unit that synchronizes the n lanes with each other after the FEC decoding performed by the FEC decoding units to reconstruct the original data frame.

摘要翻译： FEC帧结构设备包括分配要发送的数据帧到n个通道的多通道分配单元，FEC编码单元各自独立地对n个通道中的每一个执行分布式数据帧的FEC编码以生成FEC帧， 多路复用单元，其通过与光信号的m个信道相关的FEC编码单元来复用FEC帧;解复用单元，通过与n个通道相关来对接收到的光信号的m个信道进行解复用，FEC解码单元各自执行FEC解码 对于n个通道中的每一个独立地解复用的FEC帧，以及多个通道同步单元，其在由FEC解码单元执行的FEC解码之后使n个通道彼此同步以重建原始数据帧。

公开(公告)号：US08645806B2

公开(公告)日：2014-02-04

申请号：US12775825

申请日：2010-05-07

申请人： Takashi Sugihara ,  Takashi Mizuochi ,  Kazuo Kubo

发明人： Takashi Sugihara ,  Takashi Mizuochi ,  Kazuo Kubo

IPC分类号： H03M13/45

CPC分类号： H04L25/067

摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.

摘要翻译： 一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n @ m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。 软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据 作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个位（k位，其中k @ m）与固定阈值之间的比较结果，或者p 从m位接收信号的LSB侧的（mk）位中选择的位（p @ mk）。

公开(公告)号：US08495475B2

公开(公告)日：2013-07-23

申请号：US12767120

申请日：2010-04-26

申请人： Kazuo Kubo ,  Takashi Mizuochi ,  Takashi Sugihara

发明人： Kazuo Kubo ,  Takashi Mizuochi ,  Takashi Sugihara

IPC分类号： G06F11/00

CPC分类号： H03M13/2792 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/2936 ,  H03M13/2966 ,  H04J3/1652 ,  H04J2203/0089 ,  H04L1/0041 ,  H04L1/0065 ,  H04L2001/0096

摘要： An FEC frame structuring device includes a multi-lane distributing unit that distributes a data frame to be transmitted to n lanes, FEC coding units each performs FEC coding of the distributed data frame independently for each of the n lanes to generate an FEC frame, a multiplexing unit that multiplexes the FEC frame from the FEC coding units by relating to m channels of an optical signal, a demultiplexing unit that demultiplexes the m channels of the received optical signal by relating to the n lanes, FEC decoding units each performs FEC decoding of the demultiplexed FEC frame independently for each of the n lanes, and a multi-lane synchronizing unit that synchronizes the n lanes with each other after the FEC decoding performed by the FEC decoding units to reconstruct the original data frame.

摘要翻译： FEC帧结构设备包括分配要发送的数据帧到n个通道的多通道分配单元，FEC编码单元各自独立地对n个通道中的每一个执行分布式数据帧的FEC编码以生成FEC帧， 多路复用单元，其通过与光信号的m个信道相关的FEC编码单元来复用FEC帧;解复用单元，通过与n个通道相关来对接收到的光信号的m个信道进行解复用，FEC解码单元各自执行FEC解码 对于n个通道中的每一个独立地解复用的FEC帧，以及多个通道同步单元，其在由FEC解码单元执行的FEC解码之后使n个通道彼此同步以重建原始数据帧。

公开(公告)号：US08693864B2

公开(公告)日：2014-04-08

申请号：US13060332

申请日：2008-10-15

申请人： Kazuo Kubo ,  Takashi Mizuochi ,  Yuji Akiyama

发明人： Kazuo Kubo ,  Takashi Mizuochi ,  Yuji Akiyama

IPC分类号： H04J14/02

CPC分类号： H04J3/1652 ,  H04B1/74 ,  H04J3/14 ,  H04J14/0295 ,  H04J14/0297

摘要： An optical network system includes a first node that converts input signals of n systems into optical signals having wavelengths different for each of the systems and wavelength-multiplexes and transmits the optical signals and a second node that selects signals of n systems from the wavelength-multiplexed signals and outputs the signals. The first node includes an optical coupler that divides the input signals into operating system signals and redundant signals, TPNDs that convert the operating systems into optical signals, an optical switch that selects standby system signals from the redundant signals, and a TPND that converts the standby system signals into optical signals in a storage mode corresponding to a type of the standby system signals. The second node includes TPNDs that convert the optical signals converted from the operating system signals into signals of a type corresponding to the input signals, a TPND that converts the optical signals of the standby system signals into signals of the type of the input signals in a storage mode corresponding to the standby system signals, and an optical switch that selects an output destination of the signals output from the TPND.

摘要翻译： 光网络系统包括将n个系统的输入信号转换成具有对于每个系统和波长复用的波长不同的波长的第一节点，并且发送光信号，以及从波长多路复用器件中选择n个系统的信号的第二节点 信号并输出​​信号。 第一个节点包括将输入信号分为操作系统信号和冗余信号的光耦合器，将操作系统转换为光信号的TPND，从冗余信号中选择待机系统信号的光开关，以及转换待机状态的TPND 系统以对应于备用系统信号的类型的存储模式将信号转换成光信号。 第二节点包括将从操作系统信号转换的光信号转换为与输入信号相对应的类型的信号的TPND，将待机系统信号的光信号转换为输入信号类型的信号的TPND 对应于备用系统信号的存储模式，以及选择从TPND输出的信号的输出目的地的光开关。

公开(公告)号：US20120246537A1

公开(公告)日：2012-09-27

申请号：US13513411

申请日：2010-11-19

申请人： Kazuo Kubo ,  Takashi Mizuochi

发明人： Kazuo Kubo ,  Takashi Mizuochi

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/2909 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/2945 ,  H03M13/6519 ,  H04L1/0057 ,  H04L1/0083

摘要： Provided is an error correction method for an optical communication system that transmits a transmission frame formed of information data added with an overhead and an error correction code, the error correction method including adjusting a size of an FEC redundant area of an FEC frame for storing client signals of different signal types in accordance with the client signals so that transmission rates of the FEC frame for the respective client signals have an approximately N-multiple relationship (N is a positive natural number). With this, it is possible to obtain an error correction method and device capable of providing a high-quality and high-speed optical communication system without performance degradation caused by jitter or the like and with the common use of circuits having a reduced circuit scale.

摘要翻译： 提供了一种用于发送由添加有开销的信息数据和纠错码构成的传输帧的光通信系统的纠错方法，所述纠错方法包括：调整用于存储客户端的FEC帧的FEC冗余区域的大小 根据客户端信号的不同信号类型的信号，使得各个客户端信号的FEC帧的传输速率具有大约N倍的关系（N是正的自然数）。 由此，可以获得能够提供高质量和高速光通信系统的纠错方法和装置，而不会由抖动等引起的性能下降，并且通常使用具有减小的电路规模的电路。

公开(公告)号：US20120183303A1

公开(公告)日：2012-07-19

申请号：US13499067

申请日：2010-09-27

申请人： Kiyoshi Onohara ,  Kazuo Kubo ,  Takashi Mizuochi

发明人： Kiyoshi Onohara ,  Kazuo Kubo ,  Takashi Mizuochi

IPC分类号： H04B10/02

CPC分类号： H04B10/613 ,  H04B10/40 ,  H04B10/614 ,  H04J3/1652 ,  H04J14/06 ,  H04L27/0012 ,  H04L27/18 ,  H04L27/34

摘要： A digital signal processing optical transceiver includes: a reception front end for separating an optical reception signal from a communication path into a total of four channels including an I-channel and a Q-channel of an X-polarized wave component and an I-channel and a Q-channel of a Y-polarized wave component; and a digital signal processing unit for: performing signal point determination with respect to signals of the four channels; when there are only two signal points, selecting two channels including an I-channel component of an X-polarized wave and an I-channel component of a Y-polarized wave and performing signal processing thereon; and when there are four signal points, selecting the four channels including the I-channel component and a Q-channel component of the X-polarized wave and the I-channel component and a Q-channel component of the Y-polarized wave and performing the signal processing thereon.

摘要翻译： 数字信号处理光收发器包括：接收前端，用于将光接收信号从通信路径分离成总共四个信道，包括X极化波分量的I信道和Q信道，以及I信道 和Y偏振波分量的Q通道; 以及数字信号处理单元，用于：针对四个通道的信号执行信号点确定; 当仅有两个信号点时，选择包括X偏振波的I信道分量和Y偏振波的I信道分量的两个信道并在其上执行信号处理; 并且当有四个信号点时，选择包括X极化波的I信道分量和Q信道分量以及Y波分量的Q信道分量和Y偏振波的Q信道分量的四个信道，并执行 对其进行信号处理。

公开(公告)号：US09081677B2

公开(公告)日：2015-07-14

申请号：US13982403

申请日：2012-02-20

申请人： Yoshikuni Miyata ,  Kenya Sugihara ,  Kiyoshi Onohara ,  Kazuo Kubo ,  Hideo Yoshida ,  Takashi Mizuochi

发明人： Yoshikuni Miyata ,  Kenya Sugihara ,  Kiyoshi Onohara ,  Kazuo Kubo ,  Hideo Yoshida ,  Takashi Mizuochi

IPC分类号： G06F11/07 ,  H04L1/20

CPC分类号： G06F11/076 ,  H04L1/203

摘要： An input bit error ratio estimating method executed by a communication control unit includes a computing, a condition determining, a first input BER estimating, a second input BER estimating, a third input BER estimating, and an input BER estimation result outputting. In the condition determining, the communication control unit determines which of a plurality of conditions set in advance to be narrowed down to one has been established, based on a post-internal decoding residual error detection ratio. Based on the condition that is determined in the condition determining as one that has been established, the communication control unit selects one out of a plurality of processing procedures for estimating the input BER, namely, selects one of the first input BER estimating to the third input BER estimating and executes the selected processing.

摘要翻译： 由通信控制单元执行的输入误码率估计方法包括计算，条件确定，第一输入BER估计，第二输入BER估计，第三输入BER估计和输入BER估计结果输出。 在所述条件判定中，所述通信控制部基于所述内部解码剩余错误检测率，确定预先设定为被缩小为一个的条件中的哪一个已被建立。 基于在确定为已经建立的条件中确定的条件，通信控制单元从用于估计输入BER的多个处理过程中选择一个，即，选择第三输入BER中的一个， 输入BER估计并执行所选择的处理。

公开(公告)号：US08621316B2

公开(公告)日：2013-12-31

申请号：US12987368

申请日：2011-01-10

申请人： Yoshikuni Miyata ,  Hideo Yoshida ,  Kazuo Kubo ,  Takashi Mizuochi

发明人： Yoshikuni Miyata ,  Hideo Yoshida ,  Kazuo Kubo ,  Takashi Mizuochi

IPC分类号： G06F11/00 ,  H03M13/00

CPC分类号： H04L1/0071 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/271 ,  H03M13/29 ,  H03M13/2945 ,  H03M13/2957 ,  H03M13/2963 ,  H03M13/356 ,  H03M13/6561 ,  H03M13/6577 ,  H04L1/0065

摘要： An error correction encoding device includes an outer encoding circuit that performs encoding processing for an outer code and an inner encoding circuit that performs encoding processing for an inner code. The inner encoding circuit includes an inner-encoding input circuit that performs interleaving processing in which a parallel input sequence is divided into lanes and in which a barrel shift is performed for each inner frame in the lanes. Thus, allocation ratios between an information sequence area and a parity sequence area are made uniform.

摘要翻译： 纠错编码装置包括对外部码进行编码处理的外部编码电路和对内部码进行编码处理的内部编码电路。 内部编码电路包括内部编码输入电路，其执行交织处理，其中并行输入序列被划分为通道，并且其中对车道中的每个内部框架执行桶形移位。 因此，使信息序列区域和奇偶序列区域之间的分配比率一致。

公开(公告)号：US20110158648A1

公开(公告)日：2011-06-30

申请号：US13060332

申请日：2008-10-15

申请人： Kazuo Kubo ,  Takashi Mizuochi ,  Yuji Akiyama

发明人： Kazuo Kubo ,  Takashi Mizuochi ,  Yuji Akiyama

IPC分类号： H04J14/02

CPC分类号： H04J3/1652 ,  H04B1/74 ,  H04J3/14 ,  H04J14/0295 ,  H04J14/0297

摘要： An optical network system includes a first node that converts input signals of n systems into optical signals having wavelengths different for each of the systems and wavelength-multiplexes and transmits the optical signals and a second node that selects signals of n systems from the wavelength-multiplexed signals and outputs the signals. The first node includes an optical coupler that divides the input signals into operating system signals and redundant signals, TPNDs that convert the operating systems into optical signals, an optical switch that selects standby system signals from the redundant signals, and a TPND that converts the standby system signals into optical signals in a storage mode corresponding to a type of the standby system signals. The second node includes TPNDs that convert the optical signals converted from the operating system signals into signals of a type corresponding to the input signals, a TPND that converts the optical signals of the standby system signals into signals of the type of the input signals in a storage mode corresponding to the standby system signals, and an optical switch that selects an output destination of the signals output from the TPND.

摘要翻译： 光网络系统包括将n个系统的输入信号转换成具有对于每个系统和波长复用的波长不同的波长的第一节点，并且发送光信号，以及从波长多路复用器件中选择n个系统的信号的第二节点 信号并输出​​信号。 第一个节点包括将输入信号分为操作系统信号和冗余信号的光耦合器，将操作系统转换为光信号的TPND，从冗余信号中选择待机系统信号的光开关，以及转换待机状态的TPND 系统以对应于备用系统信号的类型的存储模式将信号转换成光信号。 第二节点包括将从操作系统信号转换的光信号转换为与输入信号相对应的类型的信号的TPND，将待机系统信号的光信号转换为输入信号类型的信号的TPND 对应于备用系统信号的存储模式，以及选择从TPND输出的信号的输出目的地的光开关。