公开(公告)号：US08718474B2

公开(公告)日：2014-05-06

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： H04B10/00 ,  H04J14/02 ,  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：US08699640B2

公开(公告)日：2014-04-15

申请号：US12630167

申请日：2009-12-03

申请人： Junqiang Hu ,  Dung-Huy Han ,  Ting Wang

发明人： Junqiang Hu ,  Dung-Huy Han ,  Ting Wang

IPC分类号： H04L25/08

CPC分类号： H04L27/2649 ,  H04L25/0307 ,  H04L25/03159 ,  H04L27/223 ,  H04L27/2697 ,  H04L2025/03388 ,  H04L2025/03414

摘要： A method by an optical OFDM receiver includes converting a received optical signal to an electrical signal, deriving a digital signal from the electrical signal, and emulating, with an iterative OFDM demodulator responsive to the digital signal, a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.

摘要翻译： 光OFDM接收机的方法包括将接收到的光信号转换为电信号，从电信号导出数字信号，并用响应于数字信号的迭代OFDM解调器仿真接收信号中的发射机效应较低 峰值限幅和顶峰失真，并将发送器效应应用于接收信号，以及用于估计要应用于所接收的光信号的解调的误差函数的决定信号。

公开(公告)号：US08233809B2

公开(公告)日：2012-07-31

申请号：US12607125

申请日：2009-10-28

申请人： Dayou Qian ,  Ting Wang ,  Kai Yang ,  Junqiang Hu

发明人： Dayou Qian ,  Ting Wang ,  Kai Yang ,  Junqiang Hu

IPC分类号： H04B10/06

CPC分类号： H04J14/002 ,  H04B10/2513 ,  H04B10/60 ,  H04B10/6161 ,  H04B10/6162 ,  H04J14/06

摘要： A method for the polarization independent frequency domain equalization (FDE) chromatic dispersion compensation on polarization multiplexing (POLMUX) coherent systems. Operationally, time domain signals are converted to frequency domain signals such that time domain convolution can be done as simple multiplications in the frequency domain. These frequency domain signals then converted back to time domain for subsequent use. The input signal size and FFT size are advantageously designed so that the output signals can be continuous with some overlap between two successive frames.

摘要翻译： 一种用于偏振复用（POLMUX）相干系统上的偏振独立频域均衡（FDE）色散补偿的方法。 在操作上，时域信号被转换成频域信号，使得时域卷积可以作为频域中的简单乘法来完成。 然后，这些频域信号被转换回到时域以供后续使用。 有利地设计输入信号尺寸和FFT尺寸，使得输出信号可以是连续的，在两个连续帧之间具有一些重叠。

公开(公告)号：US20120082457A1

公开(公告)日：2012-04-05

申请号：US12894742

申请日：2010-09-30

申请人： Kai Yang ,  Junqiang Hu ,  Ting Wang

发明人： Kai Yang ,  Junqiang Hu ,  Ting Wang

IPC分类号： H04J14/06

CPC分类号： H04B10/616

摘要： A method for clustered polyphase filtering input data converted from an optical signal converting input data from a serial form into a parallel form, permutating data symbols from the input data to form K clusters, passing the permutated data to an adder and multiplier for each cluster; and adding output of all K multipliers together to form an output.

摘要翻译： 一种用于将从串行形式的输入数据转换成并行形式的光信号转换的聚簇多相滤波输入数据的方法，从输入数据排列数据符号以形成K个簇，将排列数据传递给每个簇的加法器和乘法器; 并将所有K个乘法器的输出相加在一起以形成输出。

公开(公告)号：US20110310998A1

公开(公告)日：2011-12-22

申请号：US12818158

申请日：2010-06-18

申请人： Junqiang Hu ,  Tyrone Kwok ,  Ting Wang

发明人： Junqiang Hu ,  Tyrone Kwok ,  Ting Wang

IPC分类号： H04L27/00 ,  H03L7/08

CPC分类号： H03L7/07 ,  H04L2027/0067

摘要： A parallel phase locked loop (PLL) system includes a first chain of a plurality of pre-locking PLLs that operates from a free-run state to a locked state; and a second chain of a plurality of PLLs to work from the locked-state to recover signal output.

摘要翻译： 并行锁相环（PLL）系统包括从自由运行状态到锁定状态操作的多个预锁定PLL的第一链; 以及多个PLL的第二链，其从锁定状态工作以恢复信号输出。

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：US20100028002A1

公开(公告)日：2010-02-04

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： H04J14/02

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。

公开(公告)号：US20090092392A1

公开(公告)日：2009-04-09

申请号：US12181656

申请日：2008-07-29

申请人： Yue-Kai Huang ,  Ting Wang ,  Junqiang Hu

发明人： Yue-Kai Huang ,  Ting Wang ,  Junqiang Hu

IPC分类号： H04J14/00

CPC分类号： H04J14/005 ,  H04J14/02 ,  H04L5/0007 ,  H04L5/0044 ,  H04L27/2626 ,  H04L27/2647

摘要： A system and method for virtual I/Q multiplexing in optical code division for secure local area OFDM includes encoding a wide spectrum signal, which includes a plurality of spectral bins, to provide a complementary spectral coding over at least two channels. The complementary spectral codings are intensity modulated with opposite polarity for each channel. An M-ary Orthogonal Frequency Division Multiplexing (OFDM) signal is modulated using the complementary spectral codings of opposite polarity with separate complementary spectral encoded (CSE) optical codes to provide a virtual in-phase (I) and quadrature (Q) (I/Q) multiplexing for the OFDM signal.

摘要翻译： 用于安全局域OFDM的光码分区中的虚拟I / Q复用的系统和方法包括对包含多个频谱区的宽频谱信号进行编码，以在至少两个信道上提供互补的频谱编码。 对于每个通道，互补的频谱编码是以相反极性强度调制的。 使用具有相反极性的互补频谱编码，使用单独的互补频谱编码（CSE）光码来调制M正交频分复用（OFDM）信号，以提供虚拟同相（I）和正交（Q）（I / Q）复用为OFDM信号。

公开(公告)号：US08781326B2

公开(公告)日：2014-07-15

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： H04B14/00 ,  H04B10/00 ,  H04B10/548 ,  H04B10/60

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：US08169683B2

公开(公告)日：2012-05-01

申请号：US12568767

申请日：2009-09-29

申请人： Junqiang Hu ,  Yutaka Yano ,  Ting Wang

发明人： Junqiang Hu ,  Yutaka Yano ,  Ting Wang

IPC分类号： G02F1/03

CPC分类号： H04B10/508 ,  H04B10/548 ,  Y10S359/90

摘要： An apparatus includes an optical train pulse generator for generating continuous optical pulses each having a narrow width; a clock source having a high frequency for triggering the generator and operable as a sampling clock; a digital-to-analog converter DAC for converting an input signal from a digital signal processor, the DAC responsive to the sampling clock; a data modulator responsive to an amplified output from the DAC to modulate the continuous optical pulses from the train pulse generator; and a filter for removing higher frequency harmonics from the modulated continuous optical pulses out of the data modulator.

摘要翻译： 一种装置包括用于产生每个具有窄宽度的连续光脉冲的光列脉冲发生器; 具有用于触发发生器并可操作为采样时钟的高频的时钟源; 数模转换器DAC，用于转换来自数字信号处理器的输入信号，DAC响应采样时钟; 响应于来自DAC的放大输出的数据调制器来调制来自列车脉冲发生器的连续光脉冲; 以及用于从数据调制器中调制的连续光脉冲中去除更高频率谐波的滤波器。