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1. 发明授权

US08718490B2 Coherent optical orthogonal frequency division multiplexing (OFDM) reception using self optical carrier extraction 有权
标题翻译：使用自光载波提取的相干光正交频分复用（OFDM）接收
公开(公告)号：US08718490B2
公开(公告)日：2014-05-06
申请号：US12183332
申请日：2008-07-31
申请人： Lei Xu , Junqiang Hu , Ting Wang , Dayou Qian , Yutaka Yano
发明人： Lei Xu , Junqiang Hu , Ting Wang , Dayou Qian , Yutaka Yano
IPC分类号： H04B10/61
CPC分类号： H04L27/2647 , H04B10/63
摘要： A method includes producing interference between a received optical OFDM signal and an optical carrier extracted from the received optical OFDM signal to provide optical coherent detection of the received optical OFDM signal. Preferably, producing the interference includes optically splitting the received optical OFDM signal into a first part that is filtered to extract the carrier from the received optical OFDM signal and a second part similar to the received optical OFDM signal.
摘要翻译：一种方法包括：从所接收的光学OFDM信号中提取接收到的光OFDM信号与光载波之间产生干扰，以提供所接收的光OFDM信号的光相干检测。优选地，产生干扰包括将所接收的光学OFDM信号光学分割成被滤波的第一部分，以从接收的光学OFDM信号中提取载波，以及类似于接收的光学OFDM信号的第二部分。

2. 发明授权

US08705956B2 Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems 有权
标题翻译：正交频分复用（CO-OFDM）系统具有低复杂度和高精度的载波频率偏移（CFO）估计器
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。

3. 发明授权

US08693890B2 Look-up table and digital transmitter based architecture for fiber nonlinearity compensation 有权
标题翻译：查找表和基于数字发射机的架构，用于光纤非线性补偿
公开(公告)号：US08693890B2
公开(公告)日：2014-04-08
申请号：US13081693
申请日：2011-04-07
申请人： Dayou Qian , Ting Wang
发明人： Dayou Qian , Ting Wang
IPC分类号： H04B10/12 , H04B10/04
CPC分类号： H04B10/2543
摘要： Systems and methods are disclosed to process an optical signal with a pre-processing module to populate a non-linearity compensation look-up table based on a set of predetermined rules in a non-real-time off-line mode; and a transmitter applying said predetermined rules in real-time to multiple channel input data to generate a real-time symbol pattern, searching the look-up table with the real-time symbol pattern to determine a non-linearity compensation output, and modulating the optical signal with the compensation output.
摘要翻译：公开了系统和方法来处理具有预处理模块的光信号，以基于非实时离线模式中的一组预定规则来填充非线性补偿查找表; 以及发射机将所述预定规则实时地应用于多个信道输入数据以产生实时符号模式，用实时符号模式搜索查找表以确定非线性补偿输出，并且调制光信号具有补偿输出。

4. 发明申请

US20120301157A1 CHROMATIC DISPERSION COMPENSATION USING SIGN OPERATIONS AND LOOKUP TABLES 有权
标题翻译：使用标志操作和查询表进行色彩分配补偿
公开(公告)号：US20120301157A1
公开(公告)日：2012-11-29
申请号：US13267131
申请日：2011-10-06
申请人： Dayou Qian , Junqiang Hu , Ting Wang , Yoshiaki Aono , Tsutomu Tajima
发明人： Dayou Qian , Junqiang Hu , Ting Wang , Yoshiaki Aono , Tsutomu Tajima
IPC分类号： H04B10/06 , H04B10/04
CPC分类号： H04B10/25133
摘要： Methods and devices for compensating for chromatic dispersion are shown that include receiving an input data signal, applying a filter to the data signal, and outputting a CD compensated signal. Applying the filter includes convolving known filter coefficients with a plurality of delayed versions of the data signal using addition and at least one inverse sign operation or using lookup tables and combining outputs to produce a CD compensated signal.
摘要翻译：示出了用于补偿色散的方法和装置，其包括接收输入数据信号，向数据信号施加滤波器，以及输出CD补偿信号。应用滤波器包括使用加法和至少一个逆符号操作或使用查找表并组合输出以产生CD补偿信号的具有多个延迟版本的数据信号的已知滤波器系数。

5. 发明申请

US20120251110A1 COMPUTATIONALLY-EFFICIENT EQUALIZATION IN POLMUX OFDM TRANSMISSION WITH DIRECT-DETECTION VIA JOINT TRANSMITTER AND RECEIVER PROCESSING 有权
标题翻译：通过联合发射机和接收机处理进行直接检测的POLMUX OFDM传输中的计算效率均衡
公开(公告)号：US20120251110A1
公开(公告)日：2012-10-04
申请号：US13077748
申请日：2011-03-31
申请人： Neda CVIJETIC , Narayan PRASAD , Dayou QIAN , Ting WANG
发明人： Neda CVIJETIC , Narayan PRASAD , Dayou QIAN , Ting WANG
IPC分类号： H04J14/06 , H04L27/01
CPC分类号： H04L25/0208 , H04J14/06 , H04L25/022 , H04L25/024 , H04L27/2647
摘要： A method for joint transmitter and receiver processing for computationally efficient equalization in polarization multiplexed (POLMUX) optical orthogonal frequency division multiplexed (OFDM) transmission with direct detection.
摘要翻译：一种用于在具有直接检测的偏振复用（POLMUX）光学正交频分复用（OFDM）传输中的计算上有效均衡的联合发射机和接收机处理方法。

6. 发明授权

US08098990B2 System and method for providing wireless over a passive optical network (PON) 有权
标题翻译：通过无源光网络（PON）提供无线的系统和方法
公开(公告)号：US08098990B2
公开(公告)日：2012-01-17
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。

7. 发明申请

US20100329696A1 16 Quadrature Amplitude Modulation Optical Signal Transmitter 有权
标题翻译： 16正交幅度调制光信号发射机
公开(公告)号：US20100329696A1
公开(公告)日：2010-12-30
申请号：US12562260
申请日：2009-09-18
申请人： Jianjun Yu , Ting Wang , Dayou Qian
发明人： Jianjun Yu , Ting Wang , Dayou Qian
IPC分类号： H04B10/04
CPC分类号： H04B10/5053 , H04B10/541
摘要： An optical transmitter including a dividing optical coupler for dividing a lightwave onto optical paths; a first optical modulator in a first of the optical paths and driven by an I component of a first signal and a I component of a second signal for modulating the lightwave, a DC bias of the first optical modulator being at a quadrature point; a second optical modulator in a second of the optical paths and driven by a Q component of the first signal and a Q component of the second signal for modulating the lightwave, a DC bias of the second optical modulator being at the quadrature point; a phase shifter for generating a 90 degree phase shift in the Q components of the first and second signals that are modulated by the second optical coupler; and a combining optical coupler for combining the modulated lightwave from the first optical coupler and the phase shifted Q components of the first and second signals for generating a quadrature amplitude modulated signal.
摘要翻译：一种光发射机，包括用于将光波分解成光路的分光光耦合器; 在第一光路中的由第一信号的I分量和用于调制光波的第二信号的I分量驱动的第一光调制器，第一光调制器的DC偏置处于正交点; 在第二光路中的第二光调制器，由第一信号的Q分量和第二信号的Q分量驱动，用于调制光波，第二光调制器的DC偏置处于正交点; 移相器，用于产生由第二光耦合器调制的第一和第二信号的Q分量中的90度相移; 以及组合光耦合器，用于组合来自第一光耦合器的调制光波和用于产生正交幅度调制信号的第一和第二信号的相移Q分量。

8. 发明申请

US20100266282A1 Parallel Digital Coherent Detection Using Symmetrical Optical Interleaver and Direct Optical Down Conversion 有权
标题翻译：使用对称光交错器和直接光转换的并行数字相干检测
公开(公告)号：US20100266282A1
公开(公告)日：2010-10-21
申请号：US12760813
申请日：2010-04-15
申请人： Yue-Kai Huang , Ting Wang , Dayou Qian , Robert Saperstein
发明人： Yue-Kai Huang , Ting Wang , Dayou Qian , Robert Saperstein
IPC分类号： H04J14/06 , H04L27/28
CPC分类号： H04L5/04 , H04B10/548 , H04B10/60 , H04J14/06 , H04L27/2697
摘要： A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.
摘要翻译：一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带偏振方向，以提供偏振复用OFDM信号。

9. 发明申请

US20080267630A1 ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) BASED PASSIVE OPTICAL NETWORK (PON) ARCHITECTURE AND ITS EXTENSION TO LONG DISTANCE 有权
标题翻译：正交频分多址（OFDMA）基于无源光网络（PON）架构，延伸到长距离
公开(公告)号：US20080267630A1
公开(公告)日：2008-10-30
申请号：US12039981
申请日：2008-02-29
申请人： DAYOU QIAN , JUNQIANG HU , JIANJUN YU , PHILIP NAN JI , LEI XU , TING WANG , MILORAD CVIJETIC , TOSHIHIKO KUSANO
发明人： DAYOU QIAN , JUNQIANG HU , JIANJUN YU , PHILIP NAN JI , LEI XU , TING WANG , MILORAD CVIJETIC , TOSHIHIKO KUSANO
IPC分类号： H04J14/00
CPC分类号： H04L5/023 , H04J14/0226 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04L5/0007
摘要： A passive optical network (PON) device, system and method include an optical line terminal (OLT) receiver configured to receive multiple signals at different wavelengths simultaneously and enable multiple transmitters to operate at the same time during one upstream time slot. The optical line terminal employs Orthogonal Frequency Division Multiple Access (OFDMA) to transparently support a plurality of applications and enable dynamic bandwidth allocation among these applications where the bandwidth is allocated in two dimensional frequency and time space.
摘要翻译：无源光网络（PON）设备，系统和方法包括配置为同时接收不同波长的多个信号的光线路终端（OLT）接收机，并使得多个发射机能够在一个上行时隙同时进行操作。光线路终端使用正交频分多址（OFDMA）来透明地支持多个应用，并且在带宽被分配在二维频率和时间空间中的这些应用中实现动态带宽分配。

10. 发明申请

US20120257897A1 Energy Efficient OFDM Transceiver 有权
标题翻译：节能OFDM收发器
公开(公告)号：US20120257897A1
公开(公告)日：2012-10-11
申请号：US13437139
申请日：2012-04-02
申请人： Junqiang Hu , Dayou Qian , Ting Wang
发明人： Junqiang Hu , Dayou Qian , Ting Wang
IPC分类号： H04J14/00
CPC分类号： H04B10/548 , H04B10/60 , H04L27/2697
摘要： An energy efficient OFDM transceiver includes a transmitter using a decision processor to control first internal elements that can be operated in parallel and can be selectively powered off or hibernated, and a receiver using a processing decision element to control second internal elements that can be operated in parallel and can be selectively powered off or hibernated, wherein control of the first and second internal elements enables tracking status of network traffic, adjustment of OFDM bandwidth based on a traffic decision and selectively powering off or hibernating parallel ones of the first and second internal elements.
摘要翻译：节能OFDM收发器包括使用决策处理器来控制可以并行操作并且可以选择性地关闭或休眠的第一内部元件的发射机，以及使用处理决策元件来控制可以在并联并且可以选择性地关闭或休眠，其中第一和第二内部元件的控制使得能够跟踪网络业务的状态，基于业务决策来调整OFDM带宽，并且选择性地关闭或休眠第一和第二内部元件中的并行。

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