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1. 发明公开

EP2541806A1 OPTICAL TRANSMITTER 有权
标题翻译：光学发射器
公开(公告)号：EP2541806A1
公开(公告)日：2013-01-02
申请号：EP10846503.0
申请日：2010-02-25
申请人： Mitsubishi Electric Corporation
发明人： YOSHIDA, Tsuyoshi , SUGIHARA, Takashi
IPC分类号： H04B10/04 , H04B10/06 , H04B10/14 , H04B10/142 , H04B10/152
CPC分类号： H04B10/50575 , H04B10/5053 , H04B10/50595
摘要： Provided is an optical transmitter for generating an arbitrary optical waveform including an analog optical waveform, which is capable of controlling a bias to a Null point easily. The optical transmitter for modulating light from a light source by an optical modulator with use of a data sequence being an electric signal, to thereby generate the arbitrary optical waveform, includes: light intensity detection means for detecting intensity of output light of the optical modulator; data signal generation means for generating the data sequence; average modulation degree calculation means for calculating an average modulation degree of the data sequence based on the data sequence; and bias control means for performing bias control on the optical modulator based on the intensity of the output light detected by the light intensity detection means and the average modulation degree of the data sequence calculated by the average modulation degree calculation means.
摘要翻译：提供了一种用于产生包括模拟光波形的任意光波形的光发射器，其能够容易地控制对零点的偏置。用光调制器利用作为电信号的数据序列调制来自光源的光从而产生任意光波形的光发送器包括：光强度检测装置，用于检测光调制器的输出光的强度; 数据信号产生装置，用于产生数据序列; 平均调制度计算装置，用于基于数据序列计算数据序列的平均调制度; 偏置控制装置，用于根据由光强度检测装置检测的输出光的强度和由平均调制度计算装置计算的数据序列的平均调制度，对光调制器进行偏置控制。

2. 发明公开

EP3913810A1 ERROR CORRECTING DECODING DEVICE AND ERROR CORRECTING DECODING METHOD 审中-实审
公开(公告)号：EP3913810A1
公开(公告)日：2021-11-24
申请号：EP19916516.8
申请日：2019-02-22
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： YOSHIDA, Hideo , KONISHI, Yoshiaki , ISHII, Kenji , SUGIHARA, Takashi
IPC分类号： H03M13/19
摘要： Provided is an error correction decoding device including an inner code iterative decoding circuit, a parameter generation circuit, and a first control circuit. The first control circuit is configured to: receive, as parameters, a threshold and a maximum iteration count which are generated by the parameter generation circuit; and compare, when an iteration count does not reach the maximum iteration count, a non-zero-value count sequentially output from the inner code iterative decoding circuit and the threshold set for each iteration count, and stop an iterative operation by the inner code iterative decoding circuit when a result of the comparison satisfies a stopping condition set in advance.

3. 发明公开

EP3059916A1 LIKELIHOOD GENERATION CIRCUIT AND LIKELIHOOD GENERATION METHOD 有权
标题翻译： WAHRSCHEINLICHKEITSERZEUGUNGSSCHALTUNG UND WAHRSCHEINLICHKEITSERZEUGUNGSVERFAHREN
公开(公告)号：EP3059916A1
公开(公告)日：2016-08-24
申请号：EP13895506.7
申请日：2013-10-18
申请人： Mitsubishi Electric Corporation
发明人： FUJIMORI, Takafumi , SUGIHARA, Takashi
IPC分类号： H04L27/00 , H03M13/45
CPC分类号： H04L1/0054 , H03M13/45 , H04L1/0045 , H04L25/067 , H04L27/38
摘要： A phase of a symbol on an inner or outer circle of a received 8QAM symbol set, which is bitmapped by being assigned one bit depending on whether the symbol is on the inner or outer circle of a constellation mapping diagram and two bits for each of the quadrants, is rotated to generate, by QPSK likelihood generation, along with a likelihood of a received QPSK modulation symbol, a likelihood for the two bits assigned to the quadrant of the 8QAM modulated symbol set whose phase is rotated. Further, the phase-rotated 8QAM modulated symbol set is phase-rotated to the first quadrant of the diagram to move the symbol set to the QPSK symbol mapping positions, thereby generating, by QPSK likelihood generation, the likelihood for the one bit assigned to represent whether the symbol is on the outer circle or the inner circle of the 8QAM modulated symbol set.
摘要翻译：接收到的8QAM符号集合的内圈或外圆上的符号的相位，其根据该符号是位于星座映射图的内圈还是外圆上被分配一位来进行位图匹配，象限被旋转以通过QPSK似然生成与所接收的QPSK调制符号的似然性一起产生分配给其相位旋转的8QAM调制符号集的象限的两个比特的可能性。此外，相位旋转的8QAM调制符号集合被相位旋转到图的第一象限，以将符号集移动到QPSK符号映射位置，从而通过QPSK似然生成生成分配给表示的一位的可能性符号是否在8QAM调制符号集的外圆圈或内圆上。

4. 发明公开

EP2975786A1 OPTICAL TRANSMISSION APPARATUS AND OPTICAL TRANSMISSION METHOD 有权
标题翻译：装置：用于光纤传输光传输方法
公开(公告)号：EP2975786A1
公开(公告)日：2016-01-20
申请号：EP13877492.2
申请日：2013-11-14
申请人： Mitsubishi Electric Corporation
发明人： YOSHIDA, Tsuyoshi , SUGIHARA, Takashi , FUJIMORI, Takafumi , ONOHARA, Kiyoshi
IPC分类号： H04B10/2543 , H04B10/556 , H04J14/00 , H04J14/04 , H04J14/06
CPC分类号： H04J14/06 , H04B10/2543 , H04B10/2569 , H04B10/532 , H04B10/5561 , H04B10/616 , H04B10/6162 , H04L27/01
摘要： An optical transmission apparatus includes: an optical transmitter (600); and an optical receiver (800). The optical transmitter (600) has a plurality of modulation rules, switches the plurality of modulation rules to generate optical signals, multiplexes the optical signals with orthogonal polarizations, randomizes phases of the optical signals, and transmits the optical signals. The optical receiver (800) includes: a coherent detector (802) for causing interference between received optical signals and local oscillation light to convert the optical signals into electrical signals; a polarization splitter and adaptive equalizer (804) for subjecting the electrical signals to polarization splitting and adaptive equalization; and decoders (805, 806) for performing decoding or differential detection on the electrical signals on which polarization splitting and adaptive equalization have been performed.
摘要翻译：一种光传输装置，包括：光发射器（600）; 和光接收器（800）。光发射器（600）具有的调制规则复数，开关的调制规则的多元化，以产生光信号，用正交偏振复用的光信号，随机化的光信号的相位，并发送该光信号。的光接收器（800）包括：用于使接收到的光信号和本地振荡光的光信号转换成电信号转换之间的干扰的相干检测器（802）; 用于使电信号到偏振分束和自适应均衡偏振分离器和自适应均衡器（804）; 和解码器（805，806），用于在其上的偏振分束和自适应均衡的电信号进行解码或差分检测已经被执行。

5. 发明公开

EP2892158A1 RECEIVER, TRANSMITTER, AND COMMUNICATION METHOD 有权
标题翻译： SENDER，EMPFÄNGERUND KOMMUNIKATIONSVERFAHREN
公开(公告)号：EP2892158A1
公开(公告)日：2015-07-08
申请号：EP13832457.9
申请日：2013-08-27
申请人： Mitsubishi Electric Corporation
发明人： MATSUMOTO, Wataru , AKINO, Toshiaki , MIYATA, Yoshikuni , SUGIHARA, Kenya , SUGIHARA, Takashi , FUJIMORI, Takafumi
IPC分类号： H03M13/19 , H03M13/45 , H04B1/76
CPC分类号： H04L7/0016 , H03M13/1105 , H03M13/1515 , H03M13/152 , H03M13/45 , H03M13/63 , H04B1/76 , H04L1/005 , H04L1/0057 , H04L7/0079 , H04L7/033
摘要： A receiver, a transmitter, and a communication method, which exhibit performance close to that of synchronous detection even when a phase slip occurs, are obtained. Provided are a transmitter (10) for transmitting a transmission signal subjected to modulation after error correction coding and a receiver (20) including a phase compensation unit (21, 22) for receiving the transmission signal and performing demodulation therefor while maintaining synchronization thereof and an error correction decoding unit (23 to 25) for performing decoding processing for received data that has been subjected to the demodulation. The transmitter transmits a signal formed of a plurality of pilot sequences as a part of the transmission signal, and the receiver has a phase slip estimation processing function for estimating the phase slip by the phase compensation unit by using the plurality of pilot sequences, and for estimating a phase difference component by the error correction decoding unit, to thereby correct a phase of the received data.
摘要翻译：获得即使发生相移也表现出接近于同步检测性能的接收机，发射机和通信方法。提供了一种用于发送经纠错编码后进行调制的发送信号的发送机（10）和包括相位补偿单元（21,22）的接收机（20,22），用于接收发送信号并对其进行解调同时保持同步，用于对经过解调的接收数据执行解码处理的纠错解码单元（23至25）。发射机发送由多个导频序列形成的信号作为发送信号的一部分，并且接收机具有相位偏移估计处理功能，用于通过使用多个导频序列来估计相位补偿单元的相位滑移，并且对于通过纠错解码单元估计相位差分量，从而校正接收数据的相位。

6. 发明公开

EP2495889A1 PRE-EQUALISATION OPTICAL TRANSMITTER AND PRE-EQUALISATION OPTICAL FIBRE TRANSMISSION SYSTEM 审中-公开
标题翻译： OPTISCHER SENDER MIT VORVERZERRUNG UND GLASFASERSENDESYSTEM MIT VORVERZERRUNG
公开(公告)号：EP2495889A1
公开(公告)日：2012-09-05
申请号：EP10826555.4
申请日：2010-10-19
申请人： Mitsubishi Electric Corporation
发明人： MIZUOCHI, Takashi , SUGIHARA, Takashi
IPC分类号： H04B10/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/18 , H04B10/26 , H04B10/28
CPC分类号： H04B10/25137 , H04B10/505 , H04B10/5162 , H04B2210/254
摘要： Provided is a pre-equalization optical transmitter capable of generating a pre-equalized RZ-type optical signal with a simple and low-cost structure. Further provided is a pre-equalization optical fiber transmission system in which dispersion is appropriately managed by using the pre-equalization optical transmitter. The pre-equalization optical transmitter includes: an RZ conversion circuit (11) for generating an RZ-type input data sequence based on an NRZ-type input data sequence (D (t)) and a clock (p (t)) that is twice the speed of the NRZ-type input data sequence; a digital filter (12) for generating pre-equalized data by a convolution operation between the RZ-type input data sequence and a desired transfer function corresponding to the wavelength dispersion of an optical fiber transmission path; D/A converters (13a, 13b) for performing D/A conversion on the pre-equalized data to output analog pre-equalized data; and a vector modulator (15) for modulating light from a laser light source (14) based on the analog pre-equalized data to output an RZ-type optical signal.
摘要翻译：提供了能够以简单且低成本的结构生成预均衡的RZ型光信号的预均衡光发送机。进一步提供一种预均衡光纤传输系统，其中通过使用预均衡光发射机适当地管理色散。预均衡光发射机包括：RZ转换电路（11），用于基于NRZ型输入数据序列（D（t））和时钟（p（t））产生RZ型输入数据序列， NRZ型输入数据序列速度的两倍; 数字滤波器（12），用于通过RZ型输入数据序列与对应于光纤传输路径的波长色散的期望传输函数之间的卷积运算产生预均衡数据; D / A转换器（13a，13b），用于对预均衡数据执行D / A转换以输出模拟预均衡数据; 以及用于基于所述模拟预均衡数据调制来自激光源（14）的光的矢量调制器（15），以输出RZ型光信号。

7. 发明公开

EP3926836A1 OPTICAL TRANSMISSION DEVICE AND LIKELIHOOD GENERATION CIRCUIT 有权
公开(公告)号：EP3926836A1
公开(公告)日：2021-12-22
申请号：EP19919078.6
申请日：2019-03-11
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： KONISHI, Yoshiaki , ISHII, Kenji , YOSHIDA, Hideo , SUGIHARA, Takashi , YOSHIDA, Tsuyoshi
IPC分类号： H03M13/45 , H04L27/38
摘要： Provided is an optical transmission device including: a symbol demapping unit configured to convert a reception signal to a signal of an I-axis component and a signal of a Q-axis component on a phase plane, and a signal being a concatenation of the signal of the I-axis component and the signal of the Q-axis component; a likelihood generation circuit configured to generate likelihoods relating to the reception signal; and an error correction decoding unit configured to execute soft decision decoding. The likelihood generation circuit includes: a first one-dimensional-modulation lookup table configured to input the signal of the I-axis component as an argument to output a first likelihood; a second one-dimensional-modulation lookup table configured to input the signal of the Q-axis component as an argument to output a second likelihood; and a two-dimensional-modulation lookup table configured to input, as an argument, the signal being the concatenation of the signal of the I-axis component and the signal of the Q-axis component, to generate a third likelihood. The error correction decoding unit is configured to execute the soft decision decoding based on the first likelihood, the second likelihood, and the third likelihood.

8. 发明授权

EP3059916B1 LIKELIHOOD GENERATION CIRCUIT AND LIKELIHOOD GENERATION METHOD 有权
公开(公告)号：EP3059916B1
公开(公告)日：2020-08-12
申请号：EP13895506.7
申请日：2013-10-18
申请人： Mitsubishi Electric Corporation
发明人： FUJIMORI, Takafumi , SUGIHARA, Takashi
IPC分类号： H04L27/38 , H03M13/45

9. 发明授权

EP2933970B1 MULTI-LEVEL DIFFERENTIAL DECODING DEVICE AND METHOD FOR QUADRATURE AMPLITUDE MODULATION COMMUNICATION SYSTEM 有权
公开(公告)号：EP2933970B1
公开(公告)日：2019-05-22
申请号：EP13862983.7
申请日：2013-11-18
申请人： Mitsubishi Electric Corporation
发明人： SUGIHARA, Takashi , NISHIMOTO, Hiroshi , YOSHIDA, Tsuyoshi
IPC分类号： H04L27/38 , H03M13/45 , H04L27/00

10. 发明授权

EP2381592B1 OPTICAL TRANSMITTER 有权
公开(公告)号：EP2381592B1
公开(公告)日：2018-10-17
申请号：EP10731247.2
申请日：2010-01-13
申请人： Mitsubishi Electric Corporation
发明人： SUGIHARA, Takashi , KAMETANI, Soichiro , MIZUOCHI, Takashi , KONISHI, Yoshiaki
IPC分类号： G02F1/01 , H04L27/36 , H04B10/50 , H04B10/60 , H04B10/516
CPC分类号： H04L27/36 , H04B10/5053 , H04B10/5055 , H04B10/516
摘要： Provided is an optical transmitter capable of lessening a processing load of multi-level modulation processing. The optical transmitter for converting an input data series which is an input electrical signal into an optical multi-level signal and for outputting the optical multi-level signal, includes: an LUT (2) in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series; a DAC (5a) which converts the first modulation data by D/A conversion to generate a first multi-level signal; a DAC (5b) which converts the second modulation data by D/A conversion to generate a second multi-level signal; and a dual-electrode MZ modulator (8) which includes a first phase modulator (8a) for modulating light from a light source (7) in accordance with the first multi-level signal and a second phase modulator (8b) for modulating light from the light source in accordance with the second multi-level signal, and which combines an optical signal from the first phase modulator (8a) and an optical signal from the second phase modulator (8b) to output the optical multi-level signal.

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