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    Dimensional transformation
    1.
    发明授权
    Dimensional transformation 有权

    公开(公告)号：US10389447B1

    公开(公告)日：2019-08-20

    申请号：US16003736

    申请日：2018-06-08

    申请人： Amir Khandani ,  Shahab Oveis Gharan ,  Michael Andrew Reimer ,  Maurice O'Sullivan ,  Kim B. Roberts

    发明人： Amir Khandani ,  Shahab Oveis Gharan ,  Michael Andrew Reimer ,  Maurice O'Sullivan ,  Kim B. Roberts

    IPC分类号： H04L1/00 ,  H04L1/20 ,  H04B10/60 ,  H04L25/03 ,  H04B10/2543 ,  H04B10/40 ,  H04B10/50

    摘要： A receiver may receive an optical signal over an optical communications channel established between the receiver and a transmitter, the received optical signal comprising a degraded version of a modulated optical signal generated at the transmitter. The receiver may determine received digital signals corresponding to a plurality of first dimensions of the received optical signal, wherein the first dimensions correspond to dimensions of an optical carrier modulated at the transmitter to represent a multi-bit symbol, and wherein the first dimensions are distributed over two or more timeslots. The receiver may determine preliminary digital drive signal estimates using an inverse dimensional transformation and the received digital signals, the preliminary digital drive signal estimates corresponding to a plurality of second dimensions. The receiver may determine an estimate of the multi-bit symbol using the preliminary digital drive signal estimates. The inverse dimensional transformation may average signal degradations in the received digital signals.

    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。

    Minimum variance carrier recovery
    6.
    发明授权
    Minimum variance carrier recovery 有权
    最小方差载波恢复

    公开(公告)号：US08929749B2

    公开(公告)日：2015-01-06

    申请号：US13253331

    申请日：2011-10-05

    申请人： Kim B. Roberts ,  Shahab Oveis Gharan ,  Amir Khandani

    发明人： Kim B. Roberts ,  Shahab Oveis Gharan ,  Amir Khandani

    IPC分类号： H04B10/06 ,  H04L27/38 ,  H04B10/61 ,  H04L27/227

    CPC分类号： H04B10/6165 ,  H04L27/2271 ,  H04L27/3836

    摘要： Methods and systems of data symbol recovery in a coherent optical receiver of an optical communications system. A respective probabilistic phase error is calculated for each of a plurality of data symbol estimates. A phase rotation is calculated based on the probabilistic phase error estimates, using a filter function, and the phase rotation applied to at least one data symbol estimate to generate a corresponding rotated symbol estimate. Each rotated symbol estimate is processed to generate corresponding decision values of each data symbol.

    摘要翻译： 光通信系统的相干光接收机中数据符号恢复的方法和系统。 针对多个数据符号估计中的每一个计算相应的概率相位误差。 基于使用滤波函数的概率相位误差估计，以及施加到至少一个数据符号估计的相位旋转来生成相应的旋转符号估计来计算相位旋转。 处理每个旋转的符号估计以产生每个数据符号的相应决定值。

    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。