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公开(公告)号：US09584260B2
公开(公告)日：2017-02-28
申请号：US14198867
申请日：2014-03-06
Applicant: Cisco Technology, Inc.
Inventor： Chris Fludger , Theodor Kupfer , Fabrizio Forghieri , Pierluigi Poggiolini , Gabriella Bosco , Andrea Carena , Vittorio Curri
IPC: H04L1/00 , H04J14/06 , H04B10/556 , H04B10/2513 , H04B10/516 , H04B10/54 , H04B10/61 , H04B10/2569
CPC classification number: H04L1/0042 , H04B10/25137 , H04B10/2569 , H04B10/5161 , H04B10/541 , H04B10/61 , H04B10/614 , H04B10/616 , H04J14/06
Abstract: A method for transmitting a coherent optical data signal includes receiving a data signal from an interface, and encoding the data signal with a forward error correcting (FEC) encoder according to a mix of modulation formats. The FEC encoder generates an FEC encoded signal which is used to generate modulation symbols according to the modulation formats. The FEC encoded signal of modulation symbols is spectrally shaped to generate a shaped signal, and pre-distorted before transmission. The shaped signal is pre-distorted by adding a predetermined amount of chromatic dispersion to generate a smoothed signal, and the smoothed signal is transmitted according to the modulation formats.
Abstract translation: 用于发送相干光数据信号的方法包括从接口接收数据信号，并且根据调制格式的混合使用前向纠错（FEC）编码器对数据信号进行编码。 FEC编码器生成用于根据调制格式生成调制符号的FEC编码信号。 调制符号的FEC编码信号被频谱整形以产生成形信号，并且在传输之前被预失真。 通过添加预定量的色散以产生平滑的信号来对成形信号进行预失真，并根据调制格式发送平滑的信号。
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2.发明申请Adaptive Equalization in Coherent Receivers Using a Stokes Space Update Algorithm 有权使用斯托克斯空间更新算法的相干接收机中的自适应均衡公开(公告)号：US20150256268A1
公开(公告)日：2015-09-10
申请号：US14198858
申请日：2014-03-06
Applicant: Cisco Technology, Inc.
Inventor： Gabriella Bosco , Monica Visintin , Pierluigi Poggiolini , Fabrizio Forghieri , Andrea Carena , Vittorio Curri
IPC: H04B10/61
CPC classification number: H04B10/6162
Abstract: A coherent optical receiver including an optical transducer, an adaptive filter, and a processor updates the adaptive filter according to a metric derived in Stokes space. The optical transducer receives an optical signal corresponding to a modulated signal of symbols. The optical transducer also determines a first signal corresponding to a first polarization of the optical signal and a second signal corresponding to a second polarization of the optical signal. The adaptive filter recovers a first equalized signal and a second equalized signal from the first signal and the second signal. The first equalized signal and the second equalized signal form an equalized modulated signal of symbols. The processor calculates a set of Stokes parameters from the equalized modulated signal and updates the adaptive filter based on a metric derived from the set of Stokes parameters.
Abstract translation: 包括光学换能器，自适应滤波器和处理器的相干光学接收机根据在斯托克斯空间中导出的度量来更新自适应滤波器。 光学传感器接收对应于符号调制信号的光信号。 光学换能器还确定对应于光信号的第一偏振的第一信号和对应于光信号的第二偏振的第二信号。 自适应滤波器从第一信号和第二信号中恢复第一均衡信号和第二均衡信号。 第一均衡信号和第二均衡信号形成符号的均衡调制信号。 处理器从均衡调制信号计算一组斯托克斯参数，并根据从斯托克斯参数集合导出的度量来更新自适应滤波器。
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3.发明授权Adaptive equalization in coherent receivers using a Stokes space update algorithm 有权使用斯托克斯空间更新算法的相干接收机中的自适应均衡公开(公告)号：US09515745B2
公开(公告)日：2016-12-06
申请号：US14198858
申请日：2014-03-06
Applicant: Cisco Technology, Inc.
Inventor： Gabriella Bosco , Monica Visintin , Pierluigi Poggiolini , Fabrizio Forghieri , Andrea Carena , Vittorio Curri
CPC classification number: H04B10/6162
Abstract: A coherent optical receiver including an optical transducer, an adaptive filter, and a processor updates the adaptive filter according to a metric derived in Stokes space. The optical transducer receives an optical signal corresponding to a modulated signal of symbols. The optical transducer also determines a first signal corresponding to a first polarization of the optical signal and a second signal corresponding to a second polarization of the optical signal. The adaptive filter recovers a first equalized signal and a second equalized signal from the first signal and the second signal. The first equalized signal and the second equalized signal form an equalized modulated signal of symbols. The processor calculates a set of Stokes parameters from the equalized modulated signal and updates the adaptive filter based on a metric derived from the set of Stokes parameters.
Abstract translation: 包括光学换能器，自适应滤波器和处理器的相干光学接收机根据在斯托克斯空间中导出的度量来更新自适应滤波器。 光学传感器接收对应于符号调制信号的光信号。 光学换能器还确定对应于光信号的第一偏振的第一信号和对应于光信号的第二偏振的第二信号。 自适应滤波器从第一信号和第二信号中恢复第一均衡信号和第二均衡信号。 第一均衡信号和第二均衡信号形成符号的均衡调制信号。 处理器从均衡调制信号计算一组斯托克斯参数，并根据从斯托克斯参数集合导出的度量来更新自适应滤波器。
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公开(公告)号：US20160142179A1
公开(公告)日：2016-05-19
申请号：US14198867
申请日：2014-03-06
Applicant: Cisco Technology, Inc.
Inventor： Chris Fludger , Theodor Kupfer , Fabrizio Forghieri , Pierluigi Poggiolini , Gabriella Bosco , Andrea Carena , Vittorio Curri
IPC: H04L1/00 , H04B10/2569 , H04J14/06 , H04B10/516
CPC classification number: H04L1/0042 , H04B10/25137 , H04B10/2569 , H04B10/5161 , H04B10/541 , H04B10/61 , H04B10/614 , H04B10/616 , H04J14/06
Abstract: A method for transmitting a coherent optical data signal includes receiving a data signal from an interface, and encoding the data signal with a forward error correcting (FEC) encoder according to a mix of modulation formats. The FEC encoder generates an FEC encoded signal which is used to generate modulation symbols according to the modulation formats. The FEC encoded signal of modulation symbols is spectrally shaped to generate a shaped signal, and pre-distorted before transmission. The shaped signal is pre-distorted by adding a predetermined amount of chromatic dispersion to generate a smoothed signal, and the smoothed signal is transmitted according to the modulation formats.
Abstract translation: 用于发送相干光数据信号的方法包括从接口接收数据信号，并且根据调制格式的混合使用前向纠错（FEC）编码器对数据信号进行编码。 FEC编码器生成用于根据调制格式生成调制符号的FEC编码信号。 调制符号的FEC编码信号被频谱整形以产生成形信号，并且在传输之前被预失真。 通过添加预定量的色散以产生平滑的信号来对成形信号进行预失真，并根据调制格式发送平滑的信号。
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