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。

公开(公告)号：US20090304064A1

公开(公告)日：2009-12-10

申请号：US12479268

申请日：2009-06-05

申请人： Ling Liu ,  Zhenning Tao ,  Takahito Tanimura

发明人： Ling Liu ,  Zhenning Tao ,  Takahito Tanimura

IPC分类号： H03H7/30 ,  H03H7/40

CPC分类号： H04L25/03057

摘要： The present invention relates to an adaptive equalizer and an adaptive equalizing method. The adaptive equalizer comprises an adaptive equalizing unit, for adaptively equalizing an inputted signal to output the equalized signal; a coefficient updating unit, for updating a coefficient of a filter of the adaptive equalizing unit; a switching unit, connected between the coefficient updating unit and the adaptive equalizing unit, wherein when the switching unit is on, the coefficient updating unit is capable of updating the coefficient of the adaptive equalizing unit, and when the switching unit is off, the coefficient updating unit is incapable of updating the coefficient of the adaptive equalizing unit; and a monitoring device, for controlling on or off of the switching unit in accordance with a down sampling phase of the inputted signal or a down sampling phase of the equalized signal.

摘要翻译： 本发明涉及自适应均衡器和自适应均衡方法。 自适应均衡器包括自适应均衡单元，用于自适应均衡输入信号以输出均衡信号; 系数更新单元，用于更新自适应均衡单元的滤波器的系数; 连接在系数更新单元和自适应均衡单元之间的切换单元，其中当切换单元接通时，系数更新单元能够更新自适应均衡单元的系数，并且当切换单元关闭时，系数 更新单元不能更新自适应均衡单元的系数; 以及监视装置，用于根据输入信号的下采样相位或均衡信号的下采样相位来控制开关单元的接通或关断。

公开(公告)号：US20090245816A1

公开(公告)日：2009-10-01

申请号：US12320793

申请日：2009-02-04

申请人： Ling Liu ,  Zhenning Tao ,  Takahito Tanimura

发明人： Ling Liu ,  Zhenning Tao ,  Takahito Tanimura

IPC分类号： H04B10/06

CPC分类号： H04B10/6971 ,  H04B10/60 ,  H04B10/611 ,  H04B10/616

摘要： The present invention discloses filter coefficient changing apparatus and method for use in a dual-polarized optical coherent receiver. The apparatus comprises a controlling unit, a switching unit and a new coefficient obtaining unit. The switching unit is connected between a first filter coefficient updating unit and a first filtering unit and a second filtering unit; the new coefficient obtaining unit generates new filter coefficients for the first filtering unit and the second filtering unit in accordance with filter coefficients outputted by a second filter coefficient updating unit; and the controlling unit generates a control signal that controls switching of the switching unit. Upon reception of the control signal, the switching unit breaks off output of the filter coefficients from the first filter coefficient updating unit, transmits new filter coefficients from the new coefficient obtaining unit to the first filtering unit and the second filtering unit, and subsequently resumes the output of the filter coefficients from the first filter coefficient updating unit to the first filtering unit and the second filtering unit.

摘要翻译： 本发明公开了一种在双偏振光学相干接收机中使用的滤波器系数改变装置和方法。 该装置包括控制单元，切换单元和新系数获取单元。 切换单元连接在第一滤波器系数更新单元和第一滤波单元与第二滤波单元之间; 新系数获取单元根据由第二滤波器系数更新单元输出的滤波系数，生成用于第一滤波单元和第二滤波单元的新滤波器系数; 并且所述控制单元产生控制所述切换单元的切换的控制信号。 在接收到控制信号时，切换单元从第一滤波器系数更新单元中断滤波器系数的输出，将新的滤波器系数从新系数获取单元发送到第一滤波单元和第二滤波单元，随后恢复 将滤波器系数从第一滤波器系数更新单元输出到第一滤波单元和第二滤波单元。