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。

公开(公告)号：US20090092393A1

公开(公告)日：2009-04-09

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： H04J11/00 ,  H04B10/06

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。

公开(公告)号：US08184973B2

公开(公告)日：2012-05-22

申请号：US12371233

申请日：2009-02-13

申请人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

发明人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04J14/06 ,  H04B10/158

CPC分类号： H04J14/06 ,  H04B10/61 ,  H04B10/676

摘要： There is provided a method for detecting optical signals comprising employing a photo diode to both directly detect a received optical signal and convert it into an electrical signal for recovery of data bit stream information in the received optical signal, the received optical signal being derived from a separation of two polarization multiplexed optical signals that were combined before being received.

摘要翻译： 提供了一种用于检测光信号的方法，包括采用光电二极管直接检测接收到的光信号并将其转换成用于恢复所接收的光信号中的数据位流信息的电信号，所接收的光信号从 在接收之前组合的两个偏振复用光信号的分离。

公开(公告)号：US20090202243A1

公开(公告)日：2009-08-13

申请号：US12371233

申请日：2009-02-13

申请人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

发明人： Dayou Qian ,  Lei Xu ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04J14/06

CPC分类号： H04J14/06 ,  H04B10/61 ,  H04B10/676

摘要： There is provided a method for detecting optical signals comprising employing a photo diode to both directly detect a received optical signal and convert it into an electrical signal for recovery of data bit stream information in the received optical signal, the received optical signal being derived from a separation of two polarization multiplexed optical signals that were combined before being received.

摘要翻译： 提供了一种用于检测光信号的方法，包括采用光电二极管直接检测接收到的光信号并将其转换成用于恢复所接收的光信号中的数据位流信息的电信号，所接收的光信号从 在接收之前组合的两个偏振复用光信号的分离。

公开(公告)号：US08000604B2

公开(公告)日：2011-08-16

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： H04J14/02

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。

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。

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。

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 。

公开(公告)号：US08233797B2

公开(公告)日：2012-07-31

申请号：US12545159

申请日：2009-08-21

申请人： Dayou Qian ,  Neda Cvijetic ,  Junqiang Hu ,  Ting Wang

发明人： Dayou Qian ,  Neda Cvijetic ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04B10/20 ,  H04J14/00

CPC分类号： H04J14/0282 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0298 ,  H04L25/0216

摘要： Methods and systems for processing communication signals in an Orthogonal Frequency Division Multiple Access (OFDMA)-Passive Optical Network (PON) are disclosed. An optical carrier at a wavelength generated at an optical line terminal (OLT) may be reused by optical network units (ONUs) in the network for upstream transmission of data signals to the OLT. In addition, each ONU may perform carrier suppression to avoid broadband beating noise resulting from the simultaneous transmission of upstream data signals on the same wavelength. Further, the optical source at the OLT used to generate the optical carrier may be reused as a local oscillator for coherent detection of received upstream signals to minimize any frequency offsets.

摘要翻译： 公开了在正交频分多址（OFDMA）无源光网络（PON）中处理通信信号的方法和系统。 在光线路终端（OLT）处生成的波长的光载波可以由网络中的光网络单元（ONU）重新使用，用于向OLT发送数据信号。 此外，每个ONU可以执行载波抑制以避免由于在相同波长上的上行数据信号的同时传输而导致的宽带打扰噪声。 此外，用于生成光载波的OLT处的光源可以重新用作本地振荡器，用于相干检测接收到的上行信号，以使任何频率偏移最小化。

公开(公告)号：US07978975B2

公开(公告)日：2011-07-12

申请号：US12184781

申请日：2008-08-01

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

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

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04J14/0227 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0298 ,  H04L5/0007 ,  H04L5/0037 ,  H04Q2011/0086

摘要： Implementations of the present principles include methods, systems and apparatuses for transmitting data through a sub-carrier multiplexing and orthogonal frequency-division multiple access passive optical network. In accordance with aspects of the present principles, a plurality of optical network units are assigned electrical carrier frequency bandwidths that are narrower than a system capacity bandwidth. Modulation of optical waves transmitted between an optical line terminal and each optical network unit is conducted on different orthogonal sub-carrier frequencies within the assigned bandwidths such that sampling of said orthogonal sub-carrier frequencies is limited to the assigned electrical carrier frequency bandwidths. The waves are thereafter received and demodulated for the extraction of data.

摘要翻译： 本原理的实现包括通过副载波复用和正交频分多址无源光网络传输数据的方法，系统和装置。 根据本原理的方面，多个光网络单元分配比系统容量带宽窄的电载波频率带宽。 在光线路终端和每个光网络单元之间传输的光波的调制在所分配的带宽内的不同正交子载波频率上进行，使得所述正交子载波频率的采样被限制为所分配的电载波频率带宽。 之后接收和解调波以提取数据。