Method and Device for Clock Recovery
    1.
    发明申请
    Method and Device for Clock Recovery 有权
    时钟恢复的方法和设备

    公开(公告)号:US20130181757A1

    公开(公告)日:2013-07-18

    申请号:US13825877

    申请日:2010-09-24

    IPC分类号: H03L7/08

    摘要: A method and a device for processing a signal determine a timing phase over an observation interval of an input signal. A frequency estimation is determined based on the timing phase. A phase correction is determined for the observation interval based on the timing phase and the frequency offset. Then the phase correction is used to adjust the timing of the input signal. Also, a communication system with at least one such device is described.

    摘要翻译: 用于处理信号的方法和装置确定在输入信号的观察间隔上的定时相位。 基于定时相位来确定频率估计。 基于定时相位和频率偏移确定观测间隔的相位校正。 然后使用相位校正来调整输入信号的定时。 此外,描述了具有至少一个这样的设备的通信系统。

    In-Band Ripple Compensation
    2.
    发明申请
    In-Band Ripple Compensation 审中-公开
    带内纹波补偿

    公开(公告)号:US20110150127A1

    公开(公告)日:2011-06-23

    申请号:US13060563

    申请日:2009-08-19

    IPC分类号: H04L25/08 H04L27/00

    摘要: It is described a technique to compensate the in-band ripple of filters at the IFFT prior to filtering in the transmitter or, for the receiver, in the FFT after filtering. A transmitter, includes a multiplier for multiplying at least one transmitter coefficient to an input signal of an inverse Fourier transformer which is followed subsequent signal processing chain thereby reducing a ripple on the output of said signal processing chain. A receiver for receiving a transmission signal includes a signal processing chain for processing the transmission signal a multiplier for multiplying at least one receiver coefficient to an output signal of a Fourier transformer to which the output of the signal processing chain is fed to thereby reduce a ripple on said output signal of said Fourier transformer.

    摘要翻译: 描述了在滤波之前在发射机或对于接收机进行滤波之前,在IFFT处对滤波器的带内纹波进行补偿的技术。 发射机包括乘法器,用于将至少一个发射机系数与逆傅立叶变换器的输入信号相乘,后者是随后的信号处理链,从而减少所述信号处理链的输出上的纹波。 用于接收传输信号的接收机包括用于处理传输信号的信号处理链,用于将至少一个接收机系数与信号处理链的输出馈送到的傅里叶变换器的输出信号相乘的乘法器,从而减少纹波 在所述傅里叶变换器的所述输出信号上。

    Method for the transmission of optical polarization multiplex signals
    3.
    发明申请
    Method for the transmission of optical polarization multiplex signals 有权
    光偏振复用信号传输方法

    公开(公告)号:US20050286904A1

    公开(公告)日:2005-12-29

    申请号:US10528313

    申请日:2003-08-13

    IPC分类号: H04B10/61 H04J14/06 H04B10/00

    CPC分类号: H04B10/61 H04J14/06

    摘要: Binary signals are converted at the transmission end into two optical signals which are combined into a polarization multiplex signal and are then transmitted. The transmitted polarization multiplex signal is divided at the receiving end into two polarized signal parts which are converted in a linear manner into orthogonal electrical components and are supplied to a multidimensional filter. Said multidimensional filter replaces a polarization controller, restores the signal values that correspond to the signals at the transmission end, and compensates signal distortions.

    摘要翻译: 二进制信号在发送端被转换成两个光信号,这两个信号被组合成偏振多路复用信号,然后发送。 传输的偏振复用信号在接收端分为两个极化信号部分,它们以线性方式转换为正交电子部件,并被提供给多维滤波器。 所述多维滤波器替代偏振控制器,恢复与发射端处的信号相对应的信号值,并补偿信号失真。

    Low noise transformer
    4.
    发明授权
    Low noise transformer 失效
    低噪声变压器

    公开(公告)号:US06633107B1

    公开(公告)日:2003-10-14

    申请号:US09926237

    申请日:2001-10-12

    IPC分类号: H01L4108

    CPC分类号: H01F27/33

    摘要: An electrical transformer including a tank containing transformer fluid, a transformer core and winding subassembly disposed in the transformer fluid within and spaced apart from the tank. An active device, disposed in the transformer fluid within the tank, various the volume of the transformer fluid in order to reduce pressure waves generated by the vibration of the core and winding subassembly during electromagnetic operation. The active device includes at least a cell having a main body and a corrugated membrane connected to the main body in order to realize a sealed container able to maintain a low pressure atmosphere inside, and an actuator placed inside the sealed container and solidly connected to the corrugated membrane.

    摘要翻译: 一种变压器,其包括容纳变压器流体的箱,变压器芯和绕组子组件,其布置在所述变压器流体内并与所述槽间隔开。 设置在储罐内的变压器流体中的有源装置包括变压器流体的各种体积,以便减少在电磁操作期间由磁芯和绕组组件产生的压力波。 有源装置至少包括具有连接到主体的主体和波纹膜的电池,以便实现能够保持内部低压气氛的密封容器,以及设置在密封容器内部且牢固地连接到主体的致动器 瓦楞纸。

    Optical communication apparatus and method
    5.
    发明授权
    Optical communication apparatus and method 有权
    光通信装置及方法

    公开(公告)号:US09106345B2

    公开(公告)日:2015-08-11

    申请号:US13977236

    申请日:2010-12-30

    摘要: An apparatus for optical communication and optical communication method are provided, the method comprising the steps of generating an optical signal for transmitting the sequence of information data, transmitting the sequence of information data as a sequence of transmit matrices, S(k) being the k-th transmit matrix and k being a positive integer, and wherein the sequence of transmit matrices is transmitted through an optical channel characterized by a unitary channel matrix H, receiving a sequence of receive matrices, the k-th receive matrix R(k) being expressed as: R(k)=H·S(k)+N(k) wherein k is a positive integer and N(k) is a complex matrix of noise samples and providing a sequence of decision matrices, the k-th decision matrix D(k) being expressed as: D(k)=RH(k−1)R(k).

    摘要翻译: 提供了一种用于光通信和光通信方法的方法,所述方法包括以下步骤:产生用于发送信息数据序列的光信号,发送作为发送矩阵的序列的信息数据序列,S(k)为k 第k个发送矩阵,k为正整数,并且其中发送矩阵的序列通过由酉信道矩阵H表征的光信道发送,接收接收矩阵序列,第k个接收矩阵R(k) 表示为:R(k)= H·S(k)+ N(k)其中k是正整数,N(k)是噪声样本的复矩阵,并提供决策矩阵序列,第k个决策 矩阵D(k)表示为:D(k)= RH(k-1)R(k)。

    Optical communication method and system
    6.
    发明授权
    Optical communication method and system 有权
    光通信方式及系统

    公开(公告)号:US09048971B1

    公开(公告)日:2015-06-02

    申请号:US13990855

    申请日:2011-12-02

    IPC分类号: H04J14/00

    摘要: A first optical data signal is transmitted on a first data carrier from a first network element. First service information is transmitted from a first service by means of a first optical service signal on a first service carrier. A second optical data signal is transmitted on a second data carrier from a second network element, and second service information is transmitted by a second optical service signal on a second service carrier. An offset between a frequency of the first data carrier and a frequency of the first service carrier is substantially equal to an offset between a frequency of the second data carrier and a frequency of the second service carrier.

    摘要翻译: 在第一数据载体上从第一网络元件发送第一光数据信号。 通过第一服务载体上的第一光学服务信号从第一服务发送第一服务信息。 第二光数据信号在第二数据载体上从第二网络元件发送,第二服务信息由第二服务载波上的第二光业务信号发送。 第一数据载波的频率与第一服务载波的频率之间的偏移量基本上等于第二数据载波的频率与第二服务载波的频率之间的偏移。

    Method and apparatus for demodulating an optical differential phase-shift keying signal
    10.
    发明授权
    Method and apparatus for demodulating an optical differential phase-shift keying signal 有权
    用于解调光学差分相移键控信号的方法和装置

    公开(公告)号:US07840143B2

    公开(公告)日:2010-11-23

    申请号:US11884063

    申请日:2006-02-08

    申请人: Stefano Calabro

    发明人: Stefano Calabro

    IPC分类号: H04B10/00

    CPC分类号: H04L27/223 H04B10/66

    摘要: Demodulating an optical Differential Phase-Shift Keying (DPSK) signal is accomplished using a self-homodyne receiver for receiving the optical signal. A converter converts the optical signal received by the self-homodyne receiver into a representative electrical signal. A processor that processes the representative electrical signal using decision feedback multi-symbol detection in order to obtain a decision variable that indicates a differential phase-shift in the optical signal.

    摘要翻译: 使用用于接收光信号的自 - 零差接收机来解调光差分相移键控(DPSK)信号。 A转换器将由自拍零接收机接收的光信号转换成代表性的电信号。 一种处理器,其使用判决反馈多符号检测来处理代表性电信号,以便获得指示光信号中的差分相移的判定变量。