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    Transmitter apparatus and method
    21.
    发明授权
    Transmitter apparatus and method 有权
    变送器装置及方法

    公开(公告)号：US09419719B2

    公开(公告)日：2016-08-16

    申请号：US14219799

    申请日：2014-03-19

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Zhiping Jiang ,  Chen Chen ,  Zhuhong Zhang ,  Chuandong Li

    IPC: H04J14/02 ,  H04B10/532 ,  H04B10/556 ,  H04B10/50

    CPC classification number: H04B10/532 ,  H04B10/506 ,  H04B10/548 ,  H04B10/5561 ,  H04B10/5563 ,  H04J14/02

    Abstract: An apparatus comprises a digital signal processing module configured to receive a data stream and generate a plurality of digital multiple tones, a plurality of digital-to-analog converters coupled to the digital signal processing module, a plurality of drivers coupled to respective digital-to-analog converters, an electro-optic modulator having inputs coupled to the drivers and outputs coupled to a fiber and a multi-wavelength light source coupled to the electro-optic modulator.

    Abstract translation: 一种装置包括数字信号处理模块，被配置为接收数据流并产生多个数字多音调，多个数模转换器耦合到数字信号处理模块，多个驱动器耦合到相应的数字 - - 光谱调制器，其具有耦合到驱动器的输入和耦合到光纤的输出和耦合到电光调制器的多波长光源的电光调制器。

    System and method for single-stage frequency-domain equalization
    22.
    发明授权
    System and method for single-stage frequency-domain equalization 有权

    公开(公告)号：US11489595B2

    公开(公告)日：2022-11-01

    申请号：US17227678

    申请日：2021-04-12

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jianhong Ke ,  Chuandong Li

    IPC: H04B10/50 ,  H04B7/0417 ,  H04B10/548 ,  H04B10/2507 ,  H04B7/0456

    Abstract: The disclosed systems, structures, and methods are directed to a single-stage frequency-domain equalization (FDEQ) structure implemented on a processor, comprising a data preprocessing unit configured to concatenate received data samples in time-domain digital signals, transform the concatenated data samples in the time-domain digital signals to frequency-domain digital signals, and an adaptive equalizer comprising 2×2 multiple-input multiple output (MIMO) configured to compensate for non-time-varying fixed impairments and time-varying adaptive impairments in the frequency-domain digital signals.

    Hybrid digital multi-band optical receiver and transmitter
    24.
    发明授权
    Hybrid digital multi-band optical receiver and transmitter 有权

    公开(公告)号：US10686547B1

    公开(公告)日：2020-06-16

    申请号：US16295126

    申请日：2019-03-07

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Chuandong Li ,  Zhuhong Zhang

    IPC: H04J14/02 ,  H04L12/801

    Abstract: A method includes distributing payload data among a master sub-band and a plurality of slave sub-bands. The master sub-band and the plurality of slave sub-bands collectively extend over an allocated frequency spectrum; the master sub-band and the plurality of slave sub-bands are associated with different carrier frequencies; and the master sub-band has a center frequency that corresponds to a center frequency of the allocated frequency spectrum. The method includes generating modulated data for the master sub-band and the plurality of slave sub-bands based on the distributed payload data; and transmitting an optical signal to an optical medium representing the modulated data.

    Methods and Apparatuses to Improve Reception of Direct Detection Optical Signals
    29.
    发明申请
    Methods and Apparatuses to Improve Reception of Direct Detection Optical Signals 有权
    改善直接检测光信号接收的方法和装置

    公开(公告)号：US20160212003A1

    公开(公告)日：2016-07-21

    申请号：US14252225

    申请日：2014-04-14

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Chen Chen ,  Chuandong Li ,  Zhuhong Zhang

    IPC: H04L27/26 ,  H04B10/516

    CPC classification number: H04L27/2627 ,  H04B10/25137 ,  H04B10/516 ,  H04B10/548 ,  H04B10/6971 ,  H04L25/03343 ,  H04L25/06 ,  H04L27/2626

    Abstract: System and method embodiments are provided for improving reception of direct detection optical signals. In an embodiment, a method for optical transmission includes bit loading and power loading, with a digital signal processor (DSP), transmission bits of an orthogonal frequency-division multiplexing (OFDM) signal; calculating, with the DSP, a signal-signal beat interference (SSBI) component of the bit and power loaded OFDM signal by modulating each subcarrier with a symbol; and subtracting, with the DSP, the calculated SSBI component from the bit and power loaded OFDM signal.

    Abstract translation: 提供了用于改善直接检测光信号的接收的系统和方法实施例。 在一个实施例中，一种用于光传输的方法包括位加载和功率加载，数字信号处理器（DSP），正交频分复用（OFDM）信号的传输比特; 利用DSP通过用符号调制每个子载波来与DSP一起计算位和功率加载OFDM信号的信号信号差分干扰（SSBI）分量; 并从DSP中减去来自位和功率加载的OFDM信号的计算的SSBI分量。

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