公开(公告)号：US20110243575A1

公开(公告)日：2011-10-06

申请号：US12906560

申请日：2010-10-18

申请人： Meng YAN ,  Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

发明人： Meng YAN ,  Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/06 ,  H03H7/30

CPC分类号： H04L25/0305 ,  H04L2025/03401 ,  H04L2025/03675

摘要： The present application discloses a method for adaptive blind equalization of a PSK signal, an equalizer and a receiver. According to embodiments as provided, a conjugate product of a current output and a precedent output of an FIR filter is calculated, an equalization coefficient is updated using the conjugate product, and then an input signal is filtered using the FIR filter with the updated equalization coefficient. The embodiments as provided is applicable to adaptive blind equalization of any phase shift keying signal including a BPSK signal.

摘要翻译： 本申请公开了一种用于PSK信号，均衡器和接收机的自适应盲均衡的方法。 根据提供的实施例，计算FIR滤波器的电流输出和先前输出的共轭乘积，使用共轭乘积来更新均衡系数，然后使用具有更新的均衡系数的FIR滤波器对输入信号进行滤波 。 所提供的实施例可应用于包括BPSK信号的任何相移键控信号的自适应盲均衡。

公开(公告)号：US08666262B2

公开(公告)日：2014-03-04

申请号：US12906560

申请日：2010-10-18

申请人： Meng Yan ,  Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

发明人： Meng Yan ,  Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/60

CPC分类号： H04L25/0305 ,  H04L2025/03401 ,  H04L2025/03675

摘要： The present application discloses a method for adaptive blind equalization of a PSK signal, an equalizer and a receiver. According to embodiments as provided, a conjugate product of a current output and a precedent output of an FIR filter is calculated, an equalization coefficient is updated using the conjugate product, and then an input signal is filtered using the FIR filter with the updated equalization coefficient. The embodiments as provided is applicable to adaptive blind equalization of any phase shift keying signal including a BPSK signal.

摘要翻译： 本申请公开了一种用于PSK信号，均衡器和接收机的自适应盲均衡的方法。 根据提供的实施例，计算FIR滤波器的电流输出和先前输出的共轭乘积，使用共轭乘积来更新均衡系数，然后使用具有更新的均衡系数的FIR滤波器对输入信号进行滤波 。 所提供的实施例可应用于包括BPSK信号的任何相移键控信号的自适应盲均衡。

公开(公告)号：US20110064421A1

公开(公告)日：2011-03-17

申请号：US12835251

申请日：2010-07-13

申请人： Huijian ZHANG ,  Zhenning Tao ,  Shoichiro Oda

发明人： Huijian ZHANG ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/06

CPC分类号： H04B10/6161

摘要： This application relates to an apparatus and a method for equalizing chromatic dispersion and a digital coherent optical receiver. The apparatus for equalizing chromatic dispersion comprising: a chromatic dispersion equalizing unit, for compensating chromatic dispersion of an input signal; and an additional time delay removing unit, for removing, in accordance with frequency offset of the input signal, chromatic dispersion equalization time delay generated by the chromatic dispersion equalizing unit.

摘要翻译： 本申请涉及用于均衡色散和数字相干光接收机的装置和方法。 用于均衡色散的装置包括：色散均衡单元，用于补偿输入信号的色散; 以及附加的时间延迟去除单元，用于根据输入信号的频率偏移去除由色散均衡单元产生的色散均衡时间延迟。

公开(公告)号：US08472814B2

公开(公告)日：2013-06-25

申请号：US12835251

申请日：2010-07-13

申请人： Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

发明人： Huijian Zhang ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/00

CPC分类号： H04B10/6161

摘要： This application relates to an apparatus and a method for equalizing chromatic dispersion and a digital coherent optical receiver. The apparatus for equalizing chromatic dispersion comprising: a chromatic dispersion equalizing unit, for compensating chromatic dispersion of an input signal; and an additional time delay removing unit, for removing, in accordance with frequency offset of the input signal, chromatic dispersion equalization time delay generated by the chromatic dispersion equalizing unit.

摘要翻译： 本申请涉及用于均衡色散和数字相干光接收机的装置和方法。 用于均衡色散的装置包括：色散均衡单元，用于补偿输入信号的色散; 以及附加的时间延迟去除单元，用于根据输入信号的频率偏移去除由色散均衡单元产生的色散均衡时间延迟。

公开(公告)号：US08331496B2

公开(公告)日：2012-12-11

申请号：US12896476

申请日：2010-10-01

申请人： Meng Yan ,  Zhenning Tao ,  Shoichiro Oda

发明人： Meng Yan ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04L27/00

CPC分类号： H04L27/3827 ,  H04L2027/0046 ,  H04L2027/0067

摘要： The present invention relates to a phase recovery device, phase recovery method and receiver for 16 QAM data modulation. 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 respective symbols in the symbol block based on amplitudes, so as to classify 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 categories of respective symbols in the symbol block and their fourth power values; a rotation unit for rotating respective symbols in the symbol block undergone the fourth power operations and being classified into the second category, based on the reference point; and a phase estimation unit for performing phase estimations based on respective symbols in the symbol block undergone the fourth power operations and being classified into the first category, and respective rotated symbols in the symbol block undergone the fourth power operations and being classified into the second category.

摘要翻译： 本发明涉及用于16QAM数据调制的相位恢复装置，相位恢复方法和接收机。 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，用于旋转经过第四功率操作的符号块中的各个符号，并且基于参考点将其分类为第二类别; 以及相位估计单元，用于基于经过第四功率操作的符号块中的各个符号执行相位估计，并将其分类为第一类别，以及经过第四功率操作的符号块中的各个旋转符号，并被分类为第二类别 。

公开(公告)号：US20110116809A1

公开(公告)日：2011-05-19

申请号：US12896476

申请日：2010-10-01

申请人： Meng YAN ,  Zhenning Tao ,  Shoichiro Oda

发明人： Meng YAN ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H03D1/24 ,  H04B10/06

CPC分类号： H04L27/3827 ,  H04L2027/0046 ,  H04L2027/0067

摘要： The present invention relates to a phase recovery device, phase recovery method and receiver for 16 QAM data modulation. 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 respective symbols in the symbol block based on amplitudes, so as to classify 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 categories of respective symbols in the symbol block and their fourth power values; a rotation unit for rotating respective symbols in the symbol block undergone the fourth power operations and being classified into the second category, based on the reference point; and a phase estimation unit for performing phase estimations based on respective symbols in the symbol block undergone the fourth power operations and being classified into the first category, and respective rotated symbols in the symbol block undergone the fourth power operations and being classified into the second category.

摘要翻译： 本发明涉及用于16QAM数据调制的相位恢复装置，相位恢复方法和接收机。 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，用于旋转经过第四功率操作的符号块中的各个符号，并且基于参考点将其分类为第二类别; 以及相位估计单元，用于基于经过第四功率操作的符号块中的各个符号进行相位估计，并将其分类为第一类别，以及经过第四功率操作的符号块中的相应旋转符号，并被分类为第二类别 。

公开(公告)号：US20110286741A1

公开(公告)日：2011-11-24

申请号：US13058262

申请日：2008-11-28

申请人： Weizhen Yan ,  Zhenning Tao ,  Shoichiro Oda

发明人： Weizhen Yan ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/08

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 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 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 (MSDP) value.

摘要翻译： 本发明涉及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）当前获得的相位信号与由延迟单元（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，以获得平均差分相位（MSDP）值。

公开(公告)号：US08514922B2

公开(公告)日：2013-08-20

申请号：US12835214

申请日：2010-07-13

申请人： Lei Li ,  Zhenning Tao ,  Ling Liu ,  Shoichiro Oda

发明人： Lei Li ,  Zhenning Tao ,  Ling Liu ,  Shoichiro Oda

IPC分类号： H03H7/30

CPC分类号： H04B10/6165 ,  H04B10/61

摘要： This invention relates to an apparatus and a method for controlling a filter coefficient. 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： 本发明涉及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。

公开(公告)号：US20110166846A1

公开(公告)日：2011-07-07

申请号：US12896428

申请日：2010-10-01

申请人： Liang Dou ,  Zhenning Tao ,  Shoichiro Oda

发明人： Liang Dou ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： G06G7/62

CPC分类号： H04Q11/0062 ,  H04Q2011/0086 ,  H04Q2213/1301

摘要： The present invention relates to a simulation device and simulation method for a cascade communication system. 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 the 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： 本发明涉及级联通信系统的仿真装置和仿真方法。 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。

公开(公告)号：US08452192B2

公开(公告)日：2013-05-28

申请号：US13058262

申请日：2008-11-28

申请人： Weizhen Yan ,  Zhenning Tao ,  Shoichiro Oda

发明人： Weizhen Yan ,  Zhenning Tao ,  Shoichiro Oda

IPC分类号： H04B10/06

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 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 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 (MSDP) value.

摘要翻译： 本发明涉及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）当前获得的相位信号与由延迟单元（207）延迟的相位信号之间的差值; 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，以获得平均差分相位（MSDP）值。