公开(公告)号：US08385494B2

公开(公告)日：2013-02-26

申请号：US12841458

申请日：2010-07-22

Applicant: Shu-Hao Fan ,  Jianjun Yu

Inventor： Shu-Hao Fan ,  Jianjun Yu

IPC: H04L7/04

CPC classification number: H04L27/2657 ,  H04L27/2613 ,  H04L27/2675 ,  H04L27/2697 ,  H04L2027/003

Abstract: A method includes synchronizing a received signal with at least two orthogonal frequency division multiplexed OFDM training signals having only in-phase values and being real in the time domain and determining a frequency offset correction from the synchronization of the received signal and training symbols responsive to a cross-correlation between said training symbols to enable estimating all possible frequency offsets for correction for enabling OFDM demodulation of said received signal.

Abstract translation: 一种方法包括使接收的信号与仅具有同相位值的至少两个正交频分多路复用OFDM训练信号同步并且在时域中为实数，并且响应于一个接收信号和训练符号从接收信号的同步和训练符号确定频率偏移校正 所述训练符号之间的互相关，以便能够估计用于所述接收信号的OFDM解调的校正的所有可能的频率偏移。

公开(公告)号：US20130028603A1

公开(公告)日：2013-01-31

申请号：US13556928

申请日：2012-07-24

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: H04J14/06

CPC classification number: H04B10/5051 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/5561

Abstract: An optical signal transmitting system, comprising: an optical transmitter including one or more input terminals and an output terminal; and a temporal polarization interleaver including an input terminal and an output terminal, wherein the output terminal of the optical transmitter is communicatively coupled to the input terminal of the temporal polarization interleaver, wherein: the optical transmitter is configured to receive one or more input signals through its one or more input terminals, generate an output signal using the one or more input signals, the output signal including a x-polarized tributary and a y-polarized tributary that is pulse-to-pulse aligned with the x-polarized tributary, and transmit the output signal to the temporal polarization interleaver; and the temporal polarization interleaver is configured to receive the output signal from the optical transmitter and cause a predefined phase delay to one of the x-polarized tributary and the y-polarized tributary.

Abstract translation: 一种光信号传输系统，包括：光发射机，包括一个或多个输入端和一输出端; 以及包括输入端和输出端的时间偏振交织器，其中所述光发送器的输出端通信地耦合到所述时间偏振交织器的输入端，其中：所述光发送器被配置为通过以下方式接收一个或多个输入信号： 其一个或多个输入端子使用一个或多个输入信号产生输出信号，该输出信号包括与x偏振支路脉冲对脉冲对准的x偏振支路和y偏振支路，以及 将输出信号发送到时间偏振交织器; 并且时间偏振交织器被配置为从光发射器接收输出信号，并且对x偏振支流和y偏振支路之一引起预定的相位延迟。

公开(公告)号：US20120321320A1

公开(公告)日：2012-12-20

申请号：US13494227

申请日：2012-06-12

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/00

CPC classification number: H04L27/2697 ,  H04B10/548 ,  H04J14/0298

Abstract: The present method includes providing a continuous wave CW optical source with a fixed frequency spacing, separating multiple wavelengths of said CW optical source into different channels, modulating the multiple wavelengths of the CW optical source to generate an OFDM electrical signal with multiple sub-channels and each sub-channel has a channel subcarrier spacing , mixing the OFDM electrical signal with a radio frequency RF sinusoidal signal at a frequency ξf by an electrical mixer and generating a double sideband optical signal, filtering the double sideband signal to generate a single sideband optical signal, combining all channels of the single sideband optical signal, and directly detecting each sub-band of the single sideband optical OFDM signal with a respective detector, the detector converting the optical signal to an electrical signal for digital signal processing.

Abstract translation: 本方法包括提供具有固定频率间隔的连续波CW源，将所述CW光源的多个波长分离成不同的信道，调制CW光源的多个波长以产生具有多个子信道的OFDM电信号， 每个子信道具有信道子载波间隔，通过电混频器将OFDM电信号与频率为xgr f的射频RF正弦信号混合并产生双边带光信号，对双边带信号进行滤波以产生单个边带 光信号，组合单边带光信号的所有信道，并用相应检测器直接检测单边带光OFDM信号的每个子带，检测器将光信号转换为电信号进行数字信号处理。

公开(公告)号：US20120321248A1

公开(公告)日：2012-12-20

申请号：US13492775

申请日：2012-06-08

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: G02B6/26

CPC classification number: G02B6/26 ,  H04B10/516 ,  H04J14/00 ,  H04J14/02

Abstract: Methods and devices are provided to facilitate production of optical signals that exhibit reduced crosstalk noise and intersymbol interference. In some configurations, a multi-stage optical interleaver, including a first and a second optical interleaver, is used to process a first and a second set of input optical channels. The composite optical output of the multi-stage interleaver includes the first set of optical channels and the second set of optical channels, where each of the first and second set of input optical channels is processed once by the first optical interleaver and once by the second optical interleaver. As such, the first and second sets of input optical channels are each filtered twice using only two optical interleavers.

Abstract translation: 提供了方法和装置，以便于生产表现出减少的串扰噪声和符号间干扰的光信号。 在一些配置中，使用包括第一和第二光交织器的多级光交织器来处理第一和第二组输入光信道。 多级交织器的复合光输出包括第一组光通道和第二组光通道，其中第一和第二组输入光通道中的每一个由第一光交错器处理一次，一次由第二组 光学交织器。 这样，第一组和第二组输入光通道每个仅使用两个光交错器进行两次滤波。

公开(公告)号：US20120219296A1

公开(公告)日：2012-08-30

申请号：US13407017

申请日：2012-02-28

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04J14/00

CPC classification number: H04L27/2096 ,  H04B10/5051 ,  H04B10/548 ,  H04L27/2637 ,  H04L27/2697

Abstract: A method of generating a multi-subcarrier optical signal is disclosed. A local oscillator oscillates one or more data signals to generate one or more oscillating data signals. A series of modulators phase modulate a lightwave to generate a phase modulated lightwave, wherein the series of modulators are driven by the one or more oscillating data signals. The intensity modulator modulates the phase modulated lightwave, the intensity modulator being driven by one of the oscillating data signals, to generate the multi-subcarrier optical signal.

Abstract translation: 公开了一种产生多子载波光信号的方法。 本地振荡器振荡一个或多个数据信号以产生一个或多个振荡数据信号。 一系列调制器相位调制光波以产生相位调制光波，其中该系列调制器由一个或多个振荡数据信号驱动。 强度调制器调制相位调制光波，强度调制器由振荡数据信号之一驱动，以产生多子载波光信号。

公开(公告)号：US20120148261A1

公开(公告)日：2012-06-14

申请号：US13312255

申请日：2011-12-06

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04B10/04 ,  H04B1/66 ,  H04L27/28

CPC classification number: H04B10/548 ,  H04L27/2624 ,  H04L27/2697

Abstract: A companding transform technique is incorporated into orthogonal frequency division multiplexed signals to reduce the peak-to-average ratio of the signals. Prior to the companding transform, an inverse discrete Fourier transform is performed on the signal. Following the companding transform, the signal is compressed, at which point the compressed signal may be advantageously optically transmitted.

Abstract translation: 将压扩变换技术并入到正交频分复用信号中，以降低信号的峰均比。 在压扩变换之前，对该信号进行离散傅里叶逆变换。 在压扩变换之后，信号被压缩，此时压缩信号可以有利地光学传输。

公开(公告)号：US07259523B2

公开(公告)日：2007-08-21

申请号：US10543952

申请日：2004-01-14

Applicant: Paul Robert Veldman ,  Bernhard Christiaan Van Dijk ,  Jianjun Yu

Inventor： Paul Robert Veldman ,  Bernhard Christiaan Van Dijk ,  Jianjun Yu

IPC: G05F1/00

CPC classification number: H05B41/2828 ,  Y10S315/05 ,  Y10S315/07

Abstract: In a bride circuit comprising a lamp choke that might partially saturate during the ignition of the lamp, at least one of the switches is switched off when the amount of charge displaced through it in forward direction equals a predetermined value. Despite the partial paturation of the lamp choke the amplitude of the ignition voltage is thereby effectively controlled.

Abstract translation: 在包括在灯的点火期间可能部分饱和的灯扼流圈的新电路中，当正向移动的电荷量等于预定值时，至少一个开关被切断。 尽管灯扼流圈的部分校正，因此有效地控制了点火电压的幅度。

公开(公告)号：US09825707B2

公开(公告)日：2017-11-21

申请号：US14377685

申请日：2013-02-08

Applicant: ZTE (USA) Inc. ,  Jianjun Yu ,  Jianqiang Li ,  Hung-chang Chien ,  Zhensheng Jia

Inventor： Jianjun Yu ,  Jianqiang Li ,  Hung-Chang Chien ,  Zhensheng Jia

IPC: H04B10/2507 ,  H04B1/50 ,  H04B10/548 ,  H04L27/26 ,  H04L27/20 ,  H04L25/03 ,  H04J14/02 ,  H04B10/50

CPC classification number: H04B10/2507 ,  H04B10/50 ,  H04B10/548 ,  H04J14/0298 ,  H04L25/03178 ,  H04L27/2096 ,  H04L27/2601 ,  H04L27/2627 ,  H04L27/2697 ,  H04L2025/03414

Abstract: Aspects of the present invention include apparatus and methods for transmitting and receiving signals in communication systems. A multicarrier generator generates a multicarrier signal. An optical demultiplexer separates the multicarrier signal into separate multicarrier signals. At least one QPSK modulator modulates signals from the separate multicarrier signals. An optical multiplexer combines the QPSK modulated signals into a multiplexed signal. The multiplexed signal is then transmitted.

公开(公告)号：US09312979B2

公开(公告)日：2016-04-12

申请号：US14238464

申请日：2012-08-10

Applicant: Jianjun Yu

Inventor： Jianjun Yu

IPC: H04B10/556 ,  H04J14/02 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04J14/0221 ,  H04B10/556 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/2613

Abstract: Techniques for optical communications using optical orthogonal frequency division multiplexing (OFDM) include operating a signal transmitter to modulate laser light to produce modulated light that carries, in optical domain, OFDM subcarriers for carrying communication information, without a frequency guard band between the OFDM subcarriers, and pilot subcarriers for channel estimation at a signal receiver, each pilot subcarrier being free of communication information, and controlling optical power of the pilot subcarriers to vary with optical frequencies of the pilot subcarriers so that optical power of a pilot subcarrier at a high optical frequency is different from optical power of another pilot subcarrier at a low optical frequency.

Abstract translation: 使用光学正交频分复用（OFDM）的光通信技术包括操作信号发射机以调制激光以产生在光域中携带用于承载通信信息的OFDM子载波而不在OFDM子载波之间的频率保护带的调制光， 以及在信号接收机处进行信道估计的导频子载波，每个导频子载波没有通信信息，并且控制导频子载波的光功率随着导频子载波的光频率而变化，使得在高光频率下的导频子载波的光功率 与另一导频子载波的光功率不同，在低光频率。

公开(公告)号：US09294199B2

公开(公告)日：2016-03-22

申请号：US14343725

申请日：2012-09-13

Applicant: Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

Inventor： Hung-Chang Chien ,  Jianjun Yu ,  Ze Dong

IPC: H04B10/04 ,  H04B10/516 ,  H04J14/06 ,  H04B10/508 ,  H04J14/00 ,  H04B10/524

CPC classification number: H04B10/5162 ,  H04B10/508 ,  H04B10/524 ,  H04J14/002 ,  H04J14/06

Abstract: An optical transmitter comprises: first and second sets of optical in-phase and quadrature modulators; an integrable tunable laser assembly; a first polarization beam splitter that is configured to divide the continuous-waveform optical signal into a x-polarized tributary and a y-polarized tributary, each of the x-polarized tributary and the y-polarized tributary is modulated by one of the first and second sets of optical in-phase and quadrature modulators in accordance with the two respective input signals; a second polarization beam splitter that is configured to combine the modulated x-polarized tributary and the modulated y-polarized tributary into one optical signal; and an optical modulator that is configured to modulate the combined optical signal using a driving voltage, wherein the driving voltage has a bias point that is reduced by a predefined offset from a predefined reference voltage level.

Abstract translation: 光发射机包括：第一和第二组光同步和正交调制器; 可集成可调激光器组件; 第一偏振分束器，被配置为将连续波形光信号划分成x偏振支路和y偏振支路，x偏振支路和y偏振支路中的每一个由第一和/ 根据两个相应的输入信号的第二组光同步和正交调制器; 第二偏振分束器，被配置为将调制的x偏振支路和调制的y偏振支路组合成一个光信号; 以及光学调制器，其被配置为使用驱动电压来调制所述组合的光信号，其中所述驱动电压具有被减小预定义的偏离预定参考电压电平的偏置点。