公开(公告)号：US20110069954A1

公开(公告)日：2011-03-24

申请号：US12566317

申请日：2009-09-24

申请人： Junqiang Hu ,  Ting Wang ,  Dayou Qian ,  Philip Nan Ji

发明人： Junqiang Hu ,  Ting Wang ,  Dayou Qian ,  Philip Nan Ji

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04Q2011/0081

摘要： There is provided an optical network apparatus having interconnected processing gigabit passive optical network G-PON blades, a protection blade, and controller blade, the regular blades and protecting blade having a higher layer processing and switching interface to a G-PON media access control MAC coupled to PHY including serializer and de-serializer modules that are connected to respective interface modules, the improvement including a protecting 1:N signal drive and a protecting N:1 signal select driver coupled between the interface module and serializer and de-serializer modules of the protecting blade, respectively, for protecting connection to the interface module of the protecting blade. The improvement further includes a processing 1:N signal driver and a processing N:1 signal select driver coupled between the interface module and serializer and de-serializer modules of the processing G-PON blade, respectively, for protecting connection to the interface module of the processing G-PON blade and a 1:2 signal driver and 2:1 signal select driver in the interface module for providing an alternative connection to the protection blade.

摘要翻译： 提供了具有互连处理千兆无源光网络G-PON刀片，保护刀片和控制器刀片的光网络设备，正常刀片和保护刀片具有到G-PON媒体访问控制MAC的更高层处理和交换接口 耦合到PHY，包括连接到相应接口模块的串行器和解串器器模块，改进包括保护1：N信号驱动器和耦合在接口模块和串行器之间的保护N：1信号选择驱动器和解串器器模块 保护刀片分别用于保护与保护刀片的接口模块的连接。 该改进还包括处理1：N信号驱动器和耦合在接口模块和串行器之间的处理N：1信号选择驱动器和处理G-PON刀片的解串器器模块，用于保护与接口模块的连接 在接口模块中处理G-PON刀片和1：2信号驱动器和2：1信号选择驱动器，以提供与保护刀片的替代连接。

公开(公告)号：US20090310966A1

公开(公告)日：2009-12-17

申请号：US12398510

申请日：2009-03-05

申请人： Dayou Qian ,  Ting Wang

发明人： Dayou Qian ,  Ting Wang

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  H04B10/676 ,  H04L27/06

摘要： A differential delay detection system and method includes an optical splitter to split an incoming optical signal between a first path and a second path. The first path includes a cross-polarization interferometer configured to separately generate polarization independent outputs using split paths and to generate cross-polarization interference outputs, balanced photodetectors to aid in removing cross-polarization beating noise, and a polarization demultiplexer configured to combine the polarization independent outputs and the cross-polarization interference outputs from the cross-polarization interferometer with updated coefficients received from the second path to remove the cross-polarization mixed signals. The second path includes a training signal receiver configured to compute the updated coefficients and output the updated coefficients to the polarization demultiplexer.

摘要翻译： 差分延迟检测系统和方法包括：光分路器，用于在第一路径和第二路径之间分离输入光信号。 第一路径包括交叉偏振干涉仪，该交叉偏振干涉仪被配置为使用分离路径分开产生与偏振无关的输出并产生交叉极化干扰输出，平衡光电探测器以帮助去除交叉极化跳动噪声;以及偏振解复用器，其被配置为组合偏振独立 输出和来自交叉偏振干涉仪的交叉极化干扰输出，其具有从第二路径接收的更新系数以去除交叉极化混合信号。 第二路径包括被配置为计算更新的系数并将更新的系数输出到偏振解复用器的训练信号接收器。

公开(公告)号：US20080063397A1

公开(公告)日：2008-03-13

申请号：US11832075

申请日：2007-08-01

申请人： JUNQIANG Hu ,  Ting Wang ,  Dayou Qian ,  Yuanqiu Luo ,  Yoshihiko Suemura ,  Makoto Shibutani

发明人： JUNQIANG Hu ,  Ting Wang ,  Dayou Qian ,  Yuanqiu Luo ,  Yoshihiko Suemura ,  Makoto Shibutani

IPC分类号： H04J14/00

CPC分类号： H04W88/085 ,  H04J14/021 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0086

摘要： A network system and method include a wireless base station integrated at a central office of a service provider. The wireless base station is configured to provide portable and fixed services to customers. A passive optical network is coupled to the wireless base station at the central office to provide a link to extend an antenna for wireless operations of the wireless base station to a remote site such that a wireless signal from the wireless base station is transmitted in parallel with a passive fiber network signal through the link.

摘要翻译： 网络系统和方法包括集成在服务提供商的中心局的无线基站。 无线基站被配置为向客户提供便携和固定的服务。 无源光网络耦合到中心局的无线基站，以提供链路，以将无线基站的无线操作的天线扩展到远程站点，使得来自无线基站的无线信号与 无源光纤网络信号通过链路。

公开(公告)号：US08705956B2

公开(公告)日：2014-04-22

申请号：US13086724

申请日：2011-04-14

申请人： Mingzheng Cao ,  Dayou Qian

发明人： Mingzheng Cao ,  Dayou Qian

IPC分类号： H04B17/00 ,  H04K1/10 ,  H04B1/707 ,  H04L12/26

CPC分类号： H04L27/2659 ,  H04L27/266 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2692

摘要： A system and method are provided for carrier frequency offset (CFO) estimation for coherent optical orthogonal-frequency-division-multiplexing (CO-OFDM) broadband systems. The method includes obtaining an initial estimate of a normalized CFO with an estimation range equal to ±L/2 subcarrier subspacing using a single training symbol with L identical portions. The method further includes obtaining a maximum likelihood (ML) estimate of the CFO by performing a local grid search based on the initial estimate.

摘要翻译： 提供了一种用于相干光正交频分复用（CO-OFDM）宽带系统的载波频偏（CFO）估计的系统和方法。 该方法包括使用具有L个相同部分的单个训练符号获得具有等于±L / 2子载波子空间的估计范围的归一化CFO的初始估计。 该方法还包括通过基于初始估计执行局部网格搜索来获得CFO的最大似然（ML）估计。

公开(公告)号：US20110261867A1

公开(公告)日：2011-10-27

申请号：US12911416

申请日：2010-10-25

申请人： Junquiang Hu ,  Huy Dung Han ,  Dayou Qian

发明人： Junquiang Hu ,  Huy Dung Han ,  Dayou Qian

IPC分类号： H04B17/00

CPC分类号： H04L25/0305 ,  H04L25/0252 ,  H04L2025/03617

摘要： A digital receiver system to recover signals from inter-symbol-interference includes a finite impulse response (FIR) filter using convolution to recover signals; and a channel estimator coupled to the FIR filter to estimate FIR coefficients, wherein the channel estimator uses a second order expectation and a fourth order expectation from a convolution to calculate error function.

摘要翻译： 用于从符号间干扰恢复信号的数字接收机系统包括使用卷积恢复信号的有限脉冲响应（FIR）滤波器; 以及耦合到FIR滤波器以估计FIR系数的信道估计器，其中信道估计器使用来自卷积的二阶期望和四阶期望来计算误差函数。

公开(公告)号：US20110255864A1

公开(公告)日：2011-10-20

申请号：US13086724

申请日：2011-04-14

申请人： Mingzheng Cao ,  Dayou Qian

发明人： Mingzheng Cao ,  Dayou Qian

IPC分类号： H04B17/00

CPC分类号： H04L27/2659 ,  H04L27/266 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2692

摘要： A system and method are provided for carrier frequency offset (CFO) estimation for coherent optical orthogonal-frequency-division-multiplexing (CO-OFDM) broadband systems. The method includes obtaining an initial estimate of a normalized CFO with an estimation range equal to ±L/2 subcarrier subspacing using a single training symbol with L identical portions. The method further includes obtaining a maximum likelihood (ML) estimate of the CFO by performing a local grid search based on the initial estimate.

摘要翻译： 提供了一种用于相干光正交频分复用（CO-OFDM）宽带系统的载波频偏（CFO）估计的系统和方法。 该方法包括使用具有L个相同部分的单个训练符号获得具有等于±L / 2子载波子空间的估计范围的归一化CFO的初始估计。 该方法还包括通过基于初始估计执行局部网格搜索来获得CFO的最大似然（ML）估计。

公开(公告)号：US08488652B2

公开(公告)日：2013-07-16

申请号：US12911416

申请日：2010-10-25

申请人： Junquiang Hu ,  Huy Dung Han ,  Dayou Qian

发明人： Junquiang Hu ,  Huy Dung Han ,  Dayou Qian

IPC分类号： H04B1/00 ,  H03F3/45

CPC分类号： H04L25/0305 ,  H04L25/0252 ,  H04L2025/03617

摘要： A digital receiver system to recover signals from inter-symbol-interference includes a finite impulse response (FIR) filter using convolution to recover signals; and a channel estimator coupled to the FIR filter to estimate FIR coefficients, wherein the channel estimator uses a second order expectation and a fourth order expectation from a convolution to calculate error function.

摘要翻译： 用于从符号间干扰恢复信号的数字接收机系统包括使用卷积恢复信号的有限脉冲响应（FIR）滤波器; 以及耦合到FIR滤波器以估计FIR系数的信道估计器，其中信道估计器使用来自卷积的二阶期望和四阶期望来计算误差函数。