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1. 发明申请

US20120269247A1 MULTI-STAGE PHASE ESTIMATION METHOD AND APPARATUS 有权
标题翻译：多阶段相位估计方法和装置
公开(公告)号：US20120269247A1
公开(公告)日：2012-10-25
申请号：US13446690
申请日：2012-04-13
申请人： Jianqiang Li , Zhenning Tao , Lei Li
发明人： Jianqiang Li , Zhenning Tao , Lei Li
IPC分类号： H04B17/00
CPC分类号： H04L27/0014
摘要： The embodiments provide a multi-stage phase estimation method and apparatus. The apparatus i a multi-stage phase estimation configuration. Each stage of the phase estimation configuration includes metric computation modules. Each of the metric computation modules computing a distance metric and search phase angles according to an input signal and an initial search phase angle or a search phase angle of the former stage phase estimation configuration. The number of the metric computation modules is equal to that of the search phase angles of this stage. A selection module selects the search phase angle corresponding to the minimal distance metric as the phase estimation result output of this stage according to the computation results of all metric computation modules. The average time window length of the former stage phase estimation configuration is larger than that of the subsequent stage phase estimation configuration.
摘要翻译：实施例提供了多级相位估计方法和装置。该装置是多级相位估计配置。相位估计配置的每个阶段包括度量计算模块。每个度量计算模块根据前一级相位估计配置的输入信号和初始搜索相位角或搜索相位角计算距离度量和搜索相位角。度量计算模块的数量等于该阶段的搜索相位角的数量。选择模块根据所有度量计算模块的计算结果，选择与最小距离度量对应的搜索相位角作为该阶段的相位估计结果输出。前级相位估计配置的平均时间窗长度大于后级相位估计配置的平均时间窗长度。

2. 发明授权

US08654826B2 Multi-stage phase estimation method and apparatus 有权
标题翻译：多级相位估计方法及装置
公开(公告)号：US08654826B2
公开(公告)日：2014-02-18
申请号：US13446690
申请日：2012-04-13
申请人： Jianqiang Li , Zhenning Tao , Lei Li
发明人： Jianqiang Li , Zhenning Tao , Lei Li
IPC分类号： H04B3/46
CPC分类号： H04L27/0014
摘要： The embodiments provide a multi-stage phase estimation method and apparatus. The apparatus is a multi-stage phase estimation configuration. Each stage of the phase estimation configuration includes metric computation modules. Each of the metric computation modules computing a distance metric and search phase angles according to an input signal and an initial search phase angle or a search phase angle of the former stage phase estimation configuration. The number of the metric computation modules is equal to that of the search phase angles of this stage. A selection module selects the search phase angle corresponding to the minimal distance metric as the phase estimation result output of this stage according to the computation results of all metric computation modules. The average time window length of the former stage phase estimation configuration is larger than that of the subsequent stage phase estimation configuration.
摘要翻译：实施例提供了多级相位估计方法和装置。该装置是多级相位估计配置。相位估计配置的每个阶段包括度量计算模块。每个度量计算模块根据前一级相位估计配置的输入信号和初始搜索相位角或搜索相位角计算距离度量和搜索相位角。度量计算模块的数量等于该阶段的搜索相位角的数量。选择模块根据所有度量计算模块的计算结果，选择与最小距离度量对应的搜索相位角作为该阶段的相位估计结果输出。前级相位估计配置的平均时间窗长度大于后级相位估计配置的平均时间窗长度。

3. 发明授权

US08442406B2 Filter, coherent receiver device and coherent receiving method 有权
标题翻译：滤波器，相干接收机设备和相干接收方式
公开(公告)号：US08442406B2
公开(公告)日：2013-05-14
申请号：US13020831
申请日：2011-02-04
申请人： Jianqiang Li , Huijian Zhang , Zhenning Tao , Takahito Tanimura
发明人： Jianqiang Li , Huijian Zhang , Zhenning Tao , Takahito Tanimura
IPC分类号： H04B10/00 , H04B10/04 , H04B10/06
CPC分类号： H04L25/03019 , H04B10/611 , H04B10/614 , H04L25/0305 , H04L27/3818
摘要： The present invention relates to filter, coherent receiver device and coherent receiving method. The filter is used for converting a partial response signal into a full response signal, wherein the filter uses the following transfer function HPre-Filter(z) with respect to a partial response signal having a transfer function H PR ⁡ ( z ) = A ⁡ ( 1 + z - 1 ) m ⁢ ( 1 - z - 1 ) n : ⁢ ⁢ H Pre - Filter ⁡ ( z ) = 1 A ⁡ ( 1 + α ⁢ ⁢ z - 1 ) m ⁢ ( 1 - α ⁢ ⁢ z - 1 ) n , in which A is other item, m and n are integers larger than or equal to 0 but not being 0 at the same time, 0
摘要翻译：本发明涉及滤波器，相干接收机装置和相干接收方法。该滤波器用于将部分响应信号转换为全响应信号，其中该滤波器相对于具有传递函数H PR⁡（z）= A⁡的部分响应信号使用以下传递函数HPre-Filter（z）（1 + z-1）m（1-z-1）n：通用H预滤波器⁡（z）= 1 A⁡（1 + z-1）n，其中A是其他项，m和n是大于或等于0但不是同时为0的整数，0 <α<1。

4. 发明申请

US20110243561A1 FILTER, COHERENT RECEIVER DEVICE AND COHERENT RECEIVING METHOD 有权
标题翻译：过滤器，相关接收器件和相关接收方法
公开(公告)号：US20110243561A1
公开(公告)日：2011-10-06
申请号：US13020831
申请日：2011-02-04
申请人： Jianqiang LI , Huijian Zhang , Zhenning Tao , Takahito Tanimura
发明人： Jianqiang LI , Huijian Zhang , Zhenning Tao , Takahito Tanimura
IPC分类号： H04B10/06 , H04J14/06
CPC分类号： H04L25/03019 , H04B10/611 , H04B10/614 , H04L25/0305 , H04L27/3818
摘要： The present invention relates to filter, coherent receiver device and coherent receiving method. The filter is used for converting a partial response signal into a full response signal, wherein the filter uses the following transfer function HPre-Filter(z) with respect to a partial response signal having a transfer function H PR  ( z ) = A  ( 1 + z - 1 ) m  ( 1 - z - 1 ) n :   H Pre - Filter  ( z ) = 1 A  ( 1 + α   z - 1 ) m  ( 1 - α   z - 1 ) n , in which A is other item, m and n are integers larger than or equal to 0 but not being 0 at the same time, 0
摘要翻译：本发明涉及滤波器，相干接收机装置和相干接收方法。滤波器用于将部分响应信号转换成全响应信号，其中滤波器对于具有传递函数H PR（z）= A的部分响应信号使用以下传递函数HPre-Filter（z）（1 + z-1）m（1-z-1）n：前一个滤波器（z）= 1 A（1 +α） z-1）n，其中A是其他项，m和n是大于或等于0但不同时为0的整数，0 <α<1。

5. 发明授权

US08655195B2 Average length magnitude detecting apparatus, and method 有权
标题翻译：平均长度检测装置及方法
公开(公告)号：US08655195B2
公开(公告)日：2014-02-18
申请号：US13242732
申请日：2011-09-23
申请人： Weizhen Yan , Zhenning Tao , Lei Li
发明人： Weizhen Yan , Zhenning Tao , Lei Li
IPC分类号： H04B10/00
CPC分类号： H04B10/6162
摘要： The present invention relates to an average length magnitude detecting apparatus and method, and an optical coherent receiver. The average length magnitude detecting method is adopted for detecting whether an average length of an averager used by a polarization crosstalk canceling apparatus in a receiver is long or short, comprising: determining a magnitude of a residual polarization crosstalk coefficient of the receiver; and determining an index that indicates whether the average length of the averager is long or short according to the determined magnitude of the residual polarization crosstalk coefficient.
摘要翻译：本发明涉及平均长度幅度检测装置和方法以及光学相干接收机。采用平均长度幅度检测方法，用于检测接收机中由偏振串扰消除装置使用的平均长度是长或短，包括：确定接收机的残余极化串扰系数的大小; 以及根据确定的剩余极化串扰系数的大小，确定指示平均器的平均长度是长还是短的指标。

6. 发明授权

US08514922B2 Filter coefficient control apparatus and method 有权
标题翻译：滤波系数控制装置及方法
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。

7. 发明授权

US08374512B2 Frequency offset monitoring device and optical coherent receiver 有权
公开(公告)号：US08374512B2
公开(公告)日：2013-02-12
申请号：US12219938
申请日：2008-07-30
申请人： Zhenning Tao , Huijian Zhang , Takeshi Hoshida , Lei Li
发明人： Zhenning Tao , Huijian Zhang , Takeshi Hoshida , Lei Li
IPC分类号： H04B10/06 , H04B10/08
CPC分类号： H04B10/6164 , H04B10/61 , H04B10/613 , H04B10/63
摘要： The present invention provides a frequency offset monitoring device and an optical coherent receiver. A low speed frequency offset monitoring device comprises a signal speed lowering section, for lowering the speed of an inputted signal and outputting the speed lowered signal, and a frequency offset monitor, for monitoring frequency offset of the speed lowered signal outputted by the signal speed lowering section.

8. 发明申请

US20100002810A1 ADAPTIVE OPTIMIZATION METHOD AND APPARATUS FOR AVERAGE LENGTH 有权
标题翻译：自适应优化方法和平均长度的设备
公开(公告)号：US20100002810A1
公开(公告)日：2010-01-07
申请号：US12495834
申请日：2009-07-01
申请人： Lei LI , Zhenning Tao , Hisao Nakashima
发明人： Lei LI , Zhenning Tao , Hisao Nakashima
IPC分类号： H04L27/227
CPC分类号： H04B10/611 , H04B10/60 , H04B10/6165 , H04B10/697
摘要： The invention provides an average length adaptive optimization method and apparatus. An adaptive optimization method for the average length used for phase recovery comprising: a residual phase difference calculation step, for receiving a current phase of a digital symbol obtained by phase recovery and a data modulation phase of the digital symbol obtained by data recovery, and calculating a residual phase difference of the digital symbol, which is a difference between the current phase and the data modulation phase of the digital symbol; a residual phase difference auto-correlation value calculation step, for calculating an auto-correlation value of the residual phase difference with displacement m, wherein −10≦m≦10, and m is an integral; an optimization step, for optimizing the average length based on the residual phase difference auto-correlation value.
摘要翻译：本发明提供一种平均长度自适应优化方法和装置。一种用于相位恢复的平均长度的自适应优化方法，包括：残差相位差计算步骤，用于接收通过相位恢复获得的数字符号的当前相位和通过数据恢复获得的数字符号的数据调制阶段，以及计算数字符号的剩余相位差，其是数字符号的当前相位和数据调制相位之间的差; 剩余相位差自相关值计算步骤，用于计算残留相位差与位移m的自相关值，其中-10 <= m <= 10，m是积分; 优化步骤，根据残差相位自相关值优化平均长度。

9. 发明申请

US20090129787A1 Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver 有权
标题翻译：光学相干接收机，用于光学相干接收机的频偏估计装置和方法
公开(公告)号：US20090129787A1
公开(公告)日：2009-05-21
申请号：US12289072
申请日：2008-10-20
申请人： Lei Li , Zhenning Tao , Hisao Nakashima
发明人： Lei Li , Zhenning Tao , Hisao Nakashima
IPC分类号： H04B10/06
CPC分类号： H04B10/6164 , H04B10/61 , H04B10/613 , H04B10/6161 , H04B10/6162 , H04B10/6165 , H04B10/63
摘要： The present invention discloses an optical coherent receiver, and a frequency offset estimating apparatus and a frequency offset estimating method for use in the optical coherent receiver. The optical coherent receiver includes a front end processing section for changing an optical signal into a base band digital electric signal. The frequency offset estimating apparatus comprises a phase offset calculating section, for calculating a phase offset in said base band digital electric signal; a phase offset change calculating section, for calculating a change of said phase offset, namely a phase offset change, in accordance with the phase offset calculated by said phase offset calculating section; an ambiguity deciding section, for deciding whether there is ambiguity in said phase offset change calculated by said phase offset change calculating section, and outputting the phase offset change having no ambiguity; and a loop filtering section, for acquiring a weighted average of the phase offset change outputted by said ambiguity deciding section.
摘要翻译：本发明公开了一种光学相干接收机，以及用于光学相干接收机中的频率偏移估计装置和频率偏移估计方法。光相干接收机包括用于将光信号改变为基带数字电信号的前端处理部分。所述频偏估计装置包括：相位偏移计算部，用于计算所述基带数字电信号中的相位偏移; 相位偏移改变计算部分，用于根据由所述相位偏移计算部分计算的相位偏移来计算所述相位偏移的变化，即相位偏移改变; 模糊判定部，用于判定由所述相位偏移变化计算部计算出的所述相位偏移变化是否存在歧义，并输出没有模糊性的相位偏移变化; 以及环路滤波部分，用于获取由所述模糊判定部分输出的相位偏移改变的加权平均值。

10. 发明授权

US08750443B2 Phase error estimator, coherent receiver and phase error estimating method 有权
标题翻译：相位误差估计器，相干接收机和相位误差估计方法
公开(公告)号：US08750443B2
公开(公告)日：2014-06-10
申请号：US12292530
申请日：2008-11-20
申请人： Zhenning Tao , Lei Li , Hisao Nakashima
发明人： Zhenning Tao , Lei Li , Hisao Nakashima
IPC分类号： H04L7/00
CPC分类号： H04B10/69 , H04L27/0002 , H04L27/2273 , H04L2027/003
摘要： The present invention relates to a phase error estimator, a coherent receiver and a phase error estimating method. The phase error estimator estimates a phase error in an inputted base band electric signal and feeds back said phase error; said phase error estimator comprises: a pre-decider, for judging a phase of data in said base band electric signal in accordance with said feedback phase error; a phase error complex value extracting section, for extracting a real part and an imaginary part of the phase error in accordance with the judgment result of said pre-decider; a phase error determining section, for determining said phase error in accordance with the real part and the imaginary part of the phase error extracted by the phase error complex value extracting section; and a time delay feeding back section, for delaying said phase error by N number of symbols and feeding back the delayed phase error to said pre-decider, wherein N is an integer greater than 1.
摘要翻译：本发明涉及相位误差估计器，相干接收机和相位误差估计方法。相位误差估计器估计输入基带电信号中的相位误差并反馈所述相位误差; 所述相位误差估计器包括：预判定器，用于根据所述反馈相位误差来判断所述基带电信号中的数据相位; 相位误差复数值提取部分，用于根据所述预选择器的判断结果提取相位误差的实部和虚部; 相位误差确定部分，用于根据由相位误差复数值提取部分提取的相位误差的实部和虚部来确定所述相位误差; 以及时间延迟反馈部分，用于将所述相位误差延迟N个符号并将所述延迟相位误差反馈到所述预决定器，其中N是大于1的整数。

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