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    Estimation of external noise in a communication channel
    1.
    发明授权
    Estimation of external noise in a communication channel 有权

    公开(公告)号：US11228383B2

    公开(公告)日：2022-01-18

    申请号：US16721747

    申请日：2019-12-19

    申请人： Andrew D. Shiner ,  David Boertjes ,  Michael Andrew Reimer ,  Maurice O'Sullivan

    发明人： Andrew D. Shiner ,  David Boertjes ,  Michael Andrew Reimer ,  Maurice O'Sullivan

    IPC分类号： H04L1/20 ,  H04B17/336

    摘要： A system configured to perform a method for estimating external noise in a communication channel between a transmitter and a receiver is described. The method comprises obtaining a measurement of effective noise on decoded symbols at the receiver, the decoded symbols comprising noisy versions of symbols conveyed by a communication signal transmitted over the communication channel. The method further comprises storing a representation of a relationship between the effective noise, external noise in the communication channel, and one or more variable parameters. The method further comprises storing applicable values of the variable parameters, wherein each applicable value is associated with current properties of the transmitter or current properties of the receiver or both. The method further comprises calculating an estimate of the external noise in the communication channel using the effective noise, the applicable values of the variable parameters, and the representation of the relationship.

    Optical modulation schemes having reduced nonlinear optical transmission impairments
    2.
    发明授权
    Optical modulation schemes having reduced nonlinear optical transmission impairments 有权
    具有降低的非线性光传输损伤的光调制方案

    公开(公告)号：US09143238B2

    公开(公告)日：2015-09-22

    申请号：US13969694

    申请日：2013-08-19

    申请人： Kim B. Roberts ,  Maurice O'Sullivan ,  Mahmoud Taherzadehboroujeni ,  Shahab Oveis Gharan ,  Andrew D. Shiner ,  Michael Andrew Reimer

    发明人： Kim B. Roberts ,  Maurice O'Sullivan ,  Mahmoud Taherzadehboroujeni ,  Shahab Oveis Gharan ,  Andrew D. Shiner ,  Michael Andrew Reimer

    IPC分类号： H04B10/04 ,  H04B10/00 ,  H04B10/532 ,  H04B10/516

    CPC分类号： H04B10/532 ,  H04B10/516

    摘要： A method of transmitting a data signal using an optical transmitter of an optical communications system. The optical transmitter is configured to modulate an optical carrier in successive signalling intervals to generate an optical signal. A modulation scheme is provided which comprises a multi-dimensional symbol constellation. The modulation scheme is designed such that an average degree of polarization of a modulated optical signal output from the optical transmitter has a first value when averaged across a first signaling interval, and has a second value when averaged across more than one and fewer than 100 signaling intervals. The second value is less than 10 percent of the first value. During run-time, an encoder of the optical transmitter encoding a data signal to be transmitted as symbols of the constellation, and a modulator of the optical transmitter modulating available dimensions of the optical carrier in accordance with the symbols.

    摘要翻译： 一种使用光通信系统的光发射机发送数据信号的方法。 光发射机被配置为在连续的信令间隔中调制光载波以产生光信号。 提供了一种包括多维符号星座的调制方案。 调制方案被设计成使得当从第一信令间隔平均时，从光发送器输出的调制光信号的平均偏振度具有第一值，并且当平均多于一个且少于100个信令时具有第二值 间隔 第二个值小于第一个值的10％。 在运行时间期间，光发送器的编码器编码要作为星座符号发送的数据信号，以及根据符号调制光载波的可用尺寸的光发射机的调制器。

    NONLINEAR TOLERANT OPTICAL MODULATION FORMATS AT HIGH SPECTRAL EFFICIENCY
    9.
    发明申请
    NONLINEAR TOLERANT OPTICAL MODULATION FORMATS AT HIGH SPECTRAL EFFICIENCY 有权
    非线性宽光调制格式在高光谱效率下

    公开(公告)号：US20160373190A1

    公开(公告)日：2016-12-22

    申请号：US14744395

    申请日：2015-06-19

    申请人： Michael Andrew Reimer ,  Shahab Oveis Gharan ,  Andrew D. Shiner ,  Maurice O'Sullivan

    发明人： Michael Andrew Reimer ,  Shahab Oveis Gharan ,  Andrew D. Shiner ,  Maurice O'Sullivan

    IPC分类号： H04B10/556 ,  H04B10/69

    CPC分类号： H04B10/5561 ,  H04B10/2507 ,  H04B10/516 ,  H04B10/5161 ,  H04B10/532 ,  H04B10/612 ,  H04B10/614 ,  H04B10/69 ,  H04L27/34 ,  H04L27/3405

    摘要： Techniques for transmitting a data signal through an optical communications system. An encoder is configured to encode the data signal to generate symbols to be modulated onto an optical carrier. Each symbol encodes multiple bits of data and includes a first portion selected from a first constellation and a second portion selected from a second constellation. The first and second constellations have respective different average amplitudes. Each of the first and second constellations have a cardinality of at least two and the cardinality of the first constellation is greater than the cardinality of the second constellation. A modulator is configured to modulate a first frame of the optical signal using the first portion and modulate a second frame of the optical signal using the second portion. A selection of one frame of the optical signal to be used as the first frame encodes at least I bit of data.

    摘要翻译： 用于通过光通信系统发送数据信号的技术。 编码器被配置为对数据信号进行编码，以生成要调制到光载波上的符号。 每个符号对多个数据位进行编码，并且包括从第一星座选择的第一部分和从第二星座选择的第二部分。 第一和第二星座具有不同的平均振幅。 第一和第二星座中的每一个具有至少两个的基数，并且第一星座的基数大于第二星座的基数。 调制器被配置为使用第一部分来调制光信号的第一帧，并且使用第二部分调制光信号的第二帧。 要用作第一帧的光信号的一帧的选择至少编码I位的数据。

    Fiber kerr nonlinear noise estimation
    10.
    发明授权
    Fiber kerr nonlinear noise estimation 有权

    公开(公告)号：US10090920B1

    公开(公告)日：2018-10-02

    申请号：US15461718

    申请日：2017-03-17

    申请人： Qunbi Zhuge ,  Michael Andrew Reimer ,  Maurice O'Sullivan

    发明人： Qunbi Zhuge ,  Michael Andrew Reimer ,  Maurice O'Sullivan

    IPC分类号： H04B10/079 ,  H04B10/2507 ,  G06N99/00

    摘要： A method of fiber Kerr nonlinear noise estimation in an optical transmission system comprises recovering received symbols from a received signal, isolating a noise component of the received signal, estimating coefficients of a matrix based on cross-correlations between the isolated noise component and the fields of a triplet of received symbols or training symbols or estimated transmitted symbols, estimating doublet correlations of the product or the quotient of the isolated noise component and the field of a received symbol or of a training symbol or of an estimated transmitted symbol, and estimating one or more parameters related to nonlinear noise based on the estimated coefficients of the matrix and based on the estimated doublet correlations.