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1. 发明申请

WO2010060245A1 APPARATUS AND METHOD FOR MONITORING STATISTICAL CHARACTERISTICS OF PHASE NOISES, AND COHERENT OPTICAL COMMUNICATION RECEIVER 审中-公开
标题翻译：用于监测相位噪声统计特性的装置和方法以及相关光通信接收机
公开(公告)号：WO2010060245A1
公开(公告)日：2010-06-03
申请号：PCT/CN2008/073245
申请日：2008-11-28
申请人： FUJITSU LIMITED , YAN, Weizhen , TAO, Zhenning , ODA, Shoichiro
发明人： YAN, Weizhen , TAO, Zhenning , ODA, Shoichiro
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04B10/60 , H04B10/611 , H04B10/6163
摘要： This invention relates to an apparatus and a method for monitoring statistical characteristics of phase noises, as well as to a coherent optical communication receiver. The apparatus for monitoring statistical 5 characteristics of phase noises comprises an argument calculating unit (203), for obtaining an argument of a signal input thereto; an unwrapping unit (204), for unwrapping the argument obtained by the argument calculating unit (203) to obtain a phase signal (205); a delaying unit (207), for delaying the phase signal; a differentiating unit (209), for obtaining a difference between a phase 10 signal currently obtained by the unwrapping unit (204) and a phase signal delayed by the delaying unit (207); a modulus squaring unit (210), for obtaining a square of the modulus of the difference; and an averaging unit (211), for averaging squares of moduli of a plurality of differences obtained by the modulus squaring unit (210) to obtain a mean-squared differential phase 15 (MSDP) value.
摘要翻译：本发明涉及一种用于监测相位噪声的统计特性以及相干光通信接收机的装置和方法。用于监视相位噪声的统计特性的装置包括：一个参数计算单元，用于获得输入到其中的信号的自变量; 一个展开单元（204），用于展开由参数计算单元（203）获得的参数以获得相位信号（205）; 延迟单元（207），用于延迟所述相位信号; 差分单元（209），用于获得由解包单元（204）当前获得的相位10信号与延迟单元（207）延迟的相位信号之间的差; 模数平方单元（210），用于获得所述差的模数的平方; 以及平均单元（211），用于对通过所述模量平方单元（210）获得的多个差的模量的平均值进行平均，以获得均方差分相位15（MSDP）值。

2. 发明申请

WO2011017852A1 SIMULATION DEVICE AND SIMULATION METHOD 审中-公开
标题翻译：模拟装置和模拟方法
公开(公告)号：WO2011017852A1
公开(公告)日：2011-02-17
申请号：PCT/CN2009/073272
申请日：2009-08-14
申请人： FUJITSU LIMITED , DOU, Liang , TAO, Zhenning , ODA, Shoichiro
发明人： DOU, Liang , TAO, Zhenning , ODA, Shoichiro
IPC分类号： H04L12/28
CPC分类号： H04Q11/0062 , H04Q2011/0086 , H04Q2213/1301
摘要： A simulation device and a simulation method for a cascade communication system are provided. The cascade communication system comprises a plurality of nodes numbered as 1 to N successively from a transmitter to a receiver, the method comprises: acquiring simulation parameters required for simulating the cascade communication system; calculating reverse transfer functions of the respective nodes; determining a current node in a sequence from the Nth node to the first node; adding noise that should be added at the current node to a simulation signal of a previous node from the current node; simulating the current node to generate a simulation signal of the current node, by using the simulation signal of the previous node added with the noise that should be added at the current node, based on reverse transfer function of the current node; judging whether simulations of all the nodes are completed; if the simulations of all the nodes are not completed, repeating the adding and the simulating for the simulation signal of the current node; if the simulations of all the nodes are completed, determining a cost of the cascade communication system based on the simulation signal of the current node.
摘要翻译：提供了一种用于级联通信系统的仿真设备和仿真方法。级联通信系统包括从发射机到接收机连续编号为1到N的多个节点，该方法包括：获取模拟级联通信系统所需的模拟参数; 计算各个节点的反向传递函数; 确定从第N个节点到第一节点的序列中的当前节点; 将当前节点应添加的噪声添加到来自当前节点的先前节点的模拟信号; 基于当前节点的反向传递函数，通过使用添加了当前节点应添加的噪声的先前节点的模拟信号，模拟当前节点生成当前节点的模拟信号; 判断所有节点的仿真是否完成; 如果所有节点的仿真都没有完成，则对当前节点的仿真信号重复加法和仿真; 如果所有节点的模拟完成，则根据当前节点的模拟信号确定级联通信系统的成本。

3. 发明申请

WO2011017840A1 PHASE RECOVERY DEVICE, PHASE RECOVERY METHOD AND RECEIVER FOR 16 QUADRATURE AMPLITUDE MODULATION DATA MODULATION 审中-公开
标题翻译：相位恢复装置，相位恢复方法和接收器，用于16个四阶振幅调制数据调制
公开(公告)号：WO2011017840A1
公开(公告)日：2011-02-17
申请号：PCT/CN2009/073231
申请日：2009-08-13
申请人： FUJITSU LIMITED , YAN, Meng , TAO, Zhenning , ODA, Shoichiro
发明人： YAN, Meng , TAO, Zhenning , ODA, Shoichiro
IPC分类号： H04L27/38
CPC分类号： H04L27/3827 , H04L2027/0046 , H04L2027/0067
摘要： A phase recovery device, a phase recovery method and a receiver for 16 Quadrature Amplitude Modulation (QAM) data modulation are provided. The phase recovery device comprises: a fourth power calculator for calculating fourth power values of respective symbols in a symbol block; a classification unit for classifying the respective symbols in the symbol block based on amplitudes so as to classify the respective symbols in the symbol block into a first category having a large or small amplitude and a second category having an intermediate amplitude; a reference point determination unit for determining a reference point based on the categories of the respective symbols in the symbol block and their fourth power values; a rotation unit for rotating the respective symbols in the symbol block undergone the fourth power operation and being classified into the second category, based on the reference point; and a phase estimation unit for performing phase estimation based on the respective symbols in the symbol block undergone the fourth power operations and being classified into the first category, and the respective symbols in the symbol block undergone the fourth power operations and being classified into the second category.
摘要翻译：提供了相位恢复装置，相位恢复方法和用于16正交幅度调制（QAM）数据调制的接收机。相位恢复装置包括：第四功率计算器，用于计算符号块中各符号的第四功率值; 分类单元，用于基于幅度对符号块中的各个符号进行分类，以便将符号块中的各个符号分类为具有大或小幅度的第一类别和具有中间幅度的第二类别; 参考点确定单元，用于基于符号块中的各个符号的类别及其第四功率值来确定参考点; 旋转单元，用于基于所述参考点旋转经过所述第四功率操作的符号块中的各个符号并将其分类为所述第二类别; 以及相位估计单元，用于基于经过第四功率操作并被分类为第一类别的符号块中的相应符号和经过第四功率操作的符号块中的各符号进行相位估计，并被分类为第二类类别。

4. 发明申请

WO2010135868A1 FILTER COEFFICIENT CONTROL APPARATUS AND METHOD 审中-公开
标题翻译：过滤器系数控制装置及方法
公开(公告)号：WO2010135868A1
公开(公告)日：2010-12-02
申请号：PCT/CN2009/072027
申请日：2009-05-27
申请人： FUJITSU LIMITED , LI, Lei , TAO, Zhenning , LIU, Ling , ODA, Shoichiro
发明人： LI, Lei , TAO, Zhenning , LIU, Ling , ODA, Shoichiro
IPC分类号： H04B10/00
CPC分类号： H04B10/6165 , H04B10/61
摘要： An apparatus and a method for controlling a filter coefficient are presented. The filter coefficient control apparatus controls a coefficient of a filter of a phase recovering apparatus, and comprises a phase offset obtaining means, for obtaining a phase offset between a carrier and a local oscillation; an autocorrelation calculating means, for calculating an autocorrelation and related statistics of the phase offset; and a filter coefficient determining means, for determining the coefficient of the filter in accordance with the autocorrelation and related statistics.
摘要翻译：提出了一种用于控制滤波器系数的装置和方法。滤波器系数控制装置控制相位恢复装置的滤波器的系数，并且包括用于获得载波和本地振荡之间的相位偏移的相位偏移获取装置; 自相关计算装置，用于计算相位偏移的自相关和相关统计; 以及滤波器系数确定装置，用于根据自相关和相关统计确定滤波器的系数。

5. 发明申请

WO2007007864A1 PHASE MONITOR APPARATUS, PHASE CONTROL APPARATUS AND METHODS THEREOF FOR OPTICAL DQPSK RECEIVER 审中-公开
标题翻译：相位监视器装置，相位控制装置及其用于光学DQPSK接收器的方法
公开(公告)号：WO2007007864A1
公开(公告)日：2007-01-18
申请号：PCT/JP2006/314018
申请日：2006-07-07
申请人： FUJITSU LIMITED , TAO, Zhenning , RASMUSSEN, Jens, C. , ISOMURA, Akihiko
发明人： TAO, Zhenning , RASMUSSEN, Jens, C. , ISOMURA, Akihiko
IPC分类号： H04B10/158
CPC分类号： H04B10/69 , H04B10/677
摘要： I branch is provided with a first interferometer, a first balanced optical detector, and a first data recovery circuit. Q branch is provided with a second interferometer, a second balanced optical detector and a second data recovery circuit. In I branch, a mixer multiples input signal of the first data recovery circuit with output signal of the second recovery circuit. An averaging circuit averages output signal of the mixer. In Q branch, a mixer multiples input signal of the second data recovery circuit with output signal of the first recovery circuit. An averaging circuit averages output signal of the mixer. A first phase control apparatus controls the phase of a phase shifter comprised in the first interferometer based on the output signal of the averaging circuit. A second phase control apparatus, in the same manner, controls the phase of a phase shifter comprised in the second interferometer.
摘要翻译： I分支设置有第一干涉仪，第一平衡光学检测器和第一数据恢复电路。 Q分支设置有第二干涉仪，第二平衡光学检测器和第二数据恢复电路。在I分支中，混频器将第一数据恢复电路的输入信号与第二恢复电路的输出信号相乘。平均电路对混频器的输出信号进行平均。在Q分支中，混频器将第二数据恢复电路的输入信号与第一恢复电路的输出信号相乘。平均电路对混频器的输出信号进行平均。第一相位控制装置基于平均电路的输出信号来控制包括在第一干涉仪中的移相器的相位。以相同的方式，第二相位控制装置控制包括在第二干涉仪中的移相器的相位。

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