利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

57 条记录 (耗时 0.026 秒)

    Coherent optical orthogonal frequency division multiplexing (OFDM) reception using self optical carrier extraction
    5.
    发明授权
    Coherent optical orthogonal frequency division multiplexing (OFDM) reception using self optical carrier extraction 有权
    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。

    Look-up table and digital transmitter based architecture for fiber nonlinearity compensation
    6.
    发明授权
    Look-up table and digital transmitter based architecture for fiber nonlinearity compensation 有权
    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。

    CHROMATIC DISPERSION COMPENSATION USING SIGN OPERATIONS AND LOOKUP TABLES
    7.
    发明申请
    CHROMATIC DISPERSION COMPENSATION USING SIGN OPERATIONS AND LOOKUP TABLES 有权
    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。

    16 Quadrature Amplitude Modulation Optical Signal Transmitter
    9.
    发明申请
    16 Quadrature Amplitude Modulation Optical Signal Transmitter 有权
    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。

    Energy Efficient OFDM Transceiver
    10.
    发明申请
    Energy Efficient OFDM Transceiver 有权
    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 。