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    OPTICAL NETWORK UNIT REGISTRATION METHOD FOR WAVELENGTH-SELECTED WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK
    1.
    发明申请
    OPTICAL NETWORK UNIT REGISTRATION METHOD FOR WAVELENGTH-SELECTED WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK 审中-公开

    公开(公告)号：US20200083977A1

    公开(公告)日：2020-03-12

    申请号：US16127205

    申请日：2018-09-10

    Applicant: ZTE Corporation

    Inventor： Jun Shan Wey ,  Junwen Zhang

    IPC: H04J14/02 ,  H04L29/06

    Abstract: A method of communication includes receiving, by an optical line terminal (OLT), a registration request from an optical network unit (ONU) through a specific upstream wavelength, assigning, by the OLT, out of a plurality of normal service upstream wavelengths and a plurality of normal service downstream wavelengths in a wavelength resource pool, a normal service upstream wavelength and a normal service downstream wavelength to the ONU for a normal service between the ONU and the OLT, and informing, through a specific downstream wavelength, the ONU of information regarding the normal service upstream wavelength and the normal service downstream wavelength. The specific downstream and upstream wavelengths are reserved for a registration process that includes receiving, through the specific upstream wavelength, the registration request and sending, through the specific downstream wavelength, the information regarding the normal service upstream wavelength and the normal service downstream wavelength.

    OPTICAL COMMUNICATION THAT ACHIEVES BAUD RATE GREATER THAN SAMPLE RATE
    4.
    发明申请
    OPTICAL COMMUNICATION THAT ACHIEVES BAUD RATE GREATER THAN SAMPLE RATE 有权
    实现波特率高于采样率的光通信

    公开(公告)号：US20160248540A1

    公开(公告)日：2016-08-25

    申请号：US15043351

    申请日：2016-02-12

    Applicant: ZTE Corporation

    Inventor： Jianjun Yu ,  Fan Li ,  Junwen Zhang ,  Xiao Xin ,  Hung-Chang Chien

    IPC: H04J14/06 ,  H04J14/02 ,  H04J11/00 ,  H04B10/556

    CPC classification number: H04J11/00 ,  H04B10/5167 ,  H04B10/548 ,  H04L27/2636 ,  H04L27/2649

    Abstract: Duo-binary encoding is used for encoding I and Q data prior to performing orthogonal frequency division multiplexing based transmission using discrete Fourier transform spreading (DFT-S). Advantageously, duo-binary encoding improves robustness of the encoded signal to inter symbol interference, making the degradation caused by the subsequent DFT-S stage less susceptible to reduction in bit error rate performance.

    Abstract translation: 在使用离散傅里叶变换扩展（DFT-S）进行基于正交频分复用的传输之前，使用二进制编码来对I和Q数据进行编码。 有利地，二进制编码改进了编码信号对符号间干扰的鲁棒性，使由后续DFT-S级引起的劣化不太可能降低误码率性能。

    OPTICAL COMMUNICATION USING SUPER-NYQUIST SIGNALS
    5.
    发明申请
    OPTICAL COMMUNICATION USING SUPER-NYQUIST SIGNALS 审中-公开
    使用超级NYQUIS信号的光通信

    公开(公告)号：US20160211939A1

    公开(公告)日：2016-07-21

    申请号：US14915081

    申请日：2014-08-26

    Applicant: ZTE Corporation

    Inventor： Jianjun Yu ,  Junwen Zhang

    IPC: H04J14/06 ,  H04L27/34

    CPC classification number: H04J14/06 ,  H04B10/2507 ,  H04B10/5561 ,  H04B10/61 ,  H04L27/34

    Abstract: An optical transmitter multiplexes multiple optical channels for transmission over an optical communication medium. The spectrum of modulated signal in each optical channel is lowpass filtered in the electrical (digital) domain at half the channel baud rate such that super Nyquist signal multiplexing can be achieved in the optical domain without having to perform optical filtering. An optical coupler may be used to multiplex the multiple optical channels.

    Abstract translation: 光发射机复用多个光信道以在光通信介质上传输。 每个光通道中的调制信号的频谱在电（数字）域中以通道波特率的一半进行低通滤波，使得可以在光域中实现超奈奎斯特信号复用而不必进行光学滤波。 可以使用光耦合器来复用多个光信道。

    Dynamic equalization of differential path loss in an optical distribution network
    7.
    发明授权
    Dynamic equalization of differential path loss in an optical distribution network 有权

    公开(公告)号：US10404399B2

    公开(公告)日：2019-09-03

    申请号：US15957844

    申请日：2018-04-19

    Applicant: ZTE Corporation

    Inventor： Jun Shan Wey ,  Junwen Zhang

    IPC: H04J14/02 ,  H04B10/2507 ,  H04B10/61 ,  H04B10/079 ,  H04Q11/00

    Abstract: The differences in the power received from multiple optical network units connected to an optical hub may exceed an allowable dynamic range. The dynamic range may be reduced by determining the power received at the optical hub from each optical network unit and adjusting the power transmitted from one or more optical network units to reduce the overall dynamic range. For each optical network unit, the hub may determine the received optical power in an upstream signal from the optical network unit and receive a digital representation of the transmitted power. The hub may determine to adjust the optical power sent from one or more of the optical network units to reduce the dynamic range. The adjustments to the optical powers at the optical network units may be performed by sending commands from the optical hub to each adjusted optical network unit via a downstream signal.

    RECOVERING DATA FROM QUADRATURE PHASE SHIFT KEYING MODULATED OPTICAL SIGNALS
    9.
    发明申请
    RECOVERING DATA FROM QUADRATURE PHASE SHIFT KEYING MODULATED OPTICAL SIGNALS 有权
    从相位相移键控调制光信号恢复数据

    公开(公告)号：US20160065313A1

    公开(公告)日：2016-03-03

    申请号：US14781554

    申请日：2014-03-28

    Applicant: ZTE CORPORATION

    Inventor： Jianjun Yu ,  Junwen Zhang

    IPC: H04B10/61 ,  H04L25/03

    CPC classification number: H04B10/614 ,  H04B10/612 ,  H04B10/613 ,  H04L25/0305 ,  H04L2025/03636

    Abstract: Systems, devices and techniques for processing received QPSK modulated optical signals include sampling the received signal at twice the baud rate, thereby producing samples that are then processed as 9-QAM symbols using a decision directed least squares optimization method. A third stage of channel equalization is filtering performs channel equalization to mitigate linear filtering effects along the transmission link. Data bits are then recovered from the resulting symbol estimates. The received optical signal may also include dual polarized signals for increased bandwidth capacity.

    Abstract translation: 用于处理接收到的QPSK调制光信号的系统，设备和技术包括以两倍于波特率对接收到的信号进行采样，由此产生样本，然后使用决策导向的最小二乘优化方法将其处理为9-QAM符号。 信道均衡的第三阶段是滤波执行信道均衡以减轻沿着传输链路的线性滤波效应。 然后从所得到的符号估计中恢复数据位。 所接收的光信号还可以包括用于增加带宽容量的双极化信号。

    Reconfigurable adaptive forward error correction
    10.
    发明授权
    Reconfigurable adaptive forward error correction 有权

    公开(公告)号：US11356196B2

    公开(公告)日：2022-06-07

    申请号：US16976446

    申请日：2019-03-02

    Applicant: ZTE Corporation

    Inventor： Jun Shan Wey ,  Junwen Zhang ,  Zheng Liu ,  Weiliang Zhang

    IPC: H04L1/00

    Abstract: A method of communication using a forward error correction (FEC) code includes receiving, at an optical line terminal (OLT), performance capability information provided by an optical network unit (ONU), adjusting, at the OLT, a ratio between an FEC code size and a payload size based on the performance capability information, and informing the ONU of the FEC code size selected based on the ratio such that message exchanges between the ONU and the OLT are performed using the FEC code size to which the ratio is applied.

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