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30 条记录 (耗时 0.041 秒)

    Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map
    1.
    发明授权
    Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map 失效
    混合拉曼/掺铒光纤放大器和传输系统的色散图

    公开(公告)号：US07085039B2

    公开(公告)日：2006-08-01

    申请号：US10389373

    申请日：2003-03-14

    申请人： Dmitri Foursa ,  Morten Nissov ,  Alexei N. Pilipetskii ,  Michael A. Mills ,  Chinlon Lin ,  Bo Pedersen

    发明人： Dmitri Foursa ,  Morten Nissov ,  Alexei N. Pilipetskii ,  Michael A. Mills ,  Chinlon Lin ,  Bo Pedersen

    IPC分类号： H04B10/12

    CPC分类号： H01S3/06754 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04

    摘要： A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain complementing the Raman gain. The EDFA section preferably includes a highly inverted, single-stage EDFA to produce the complementing EDFA gain shape. One embodiment of the EDFA section includes a high return loss termination located after the erbium fiber to receive unabsorbed pump power. Multiple hybrid Raman-EDFAs can be connected in an amplifier chain in a transmission system. The transmission system preferably provides a dispersion map including regular composite fiber spans followed by at least one compensating span of negative dispersion fibers. The Raman sections of the hybrid Raman-EDFAs are preferably coupled to negative dispersion fiber in the transmission system.

    摘要翻译： 混合拉曼EDFA提供C波段和L波段的增益均衡。 混合拉曼EDFA包括产生拉曼增益的拉曼部分和产生补偿拉曼增益的EDFA增益的EDFA部分。 EDFA部分优选地包括高反转的单级EDFA以产生补充EDFA增益形状。 EDFA部分的一个实施例包括位于铒光纤之后的高回波损耗终端以接收未吸收的泵浦功率。 多个混合拉曼EDFA可以连接在传输系统的放大器链中。 传输系统优选地提供包括常规复合纤维跨度的色散图，随后是负色散光纤的至少一个补偿跨度。 混合拉曼EDFA的拉曼段优选耦合到传输系统中的负色散光纤。

    System and method for adjusting soft decision thresholds in a soft-decision error correction system
    4.
    发明授权
    System and method for adjusting soft decision thresholds in a soft-decision error correction system 失效
    用于在软判决纠错系统中调整软决策阈值的系统和方法

    公开(公告)号：US07363553B2

    公开(公告)日：2008-04-22

    申请号：US10972289

    申请日：2004-10-22

    申请人： Yi Cai ,  Alexei N. Pilipetskii ,  Morten Nissov

    发明人： Yi Cai ,  Alexei N. Pilipetskii ,  Morten Nissov

    IPC分类号： H03M13/00

    CPC分类号： H03M13/45

    摘要： The soft decision thresholds in a soft decision forward error correction (FEC) system may be adjusted based on mutual information of a detected signal. In one embodiment, a recursive algorithm may be used to optimize threshold values by maximizing the mutual information. In another embodiment, an adaptive scheme may be used to optimize threshold values based on a pre-knowledge of the noise in the channel. In a further embodiment, an adaptive scheme may be used to optimize threshold values by without pre-knowledge of the noise in the channel.

    摘要翻译： 可以基于检测到的信号的相互信息来调整软判决前向纠错（FEC）系统中的软判决阈值。 在一个实施例中，可以使用递归算法来通过使互信息最大化来优化阈值。 在另一个实施例中，可以使用自适应方案来基于信道中噪声的预先了解来优化阈值。 在另一个实施例中，可以使用自适应方案来通过没有对信道中的噪声的预先知识来优化阈值。

    Detection of Data in Signals with Data Pattern Dependent Signal Distortion
    5.
    发明申请
    Detection of Data in Signals with Data Pattern Dependent Signal Distortion 有权
    用数据模式相关信号失真检测信号中的数据

    公开(公告)号：US20100232809A1

    公开(公告)日：2010-09-16

    申请号：US12718132

    申请日：2010-03-05

    申请人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    发明人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    IPC分类号： H04B10/06 ,  H04L27/00

    CPC分类号： H04J14/02 ,  H04B10/2507 ,  H04B10/697 ,  H04J14/0279

    摘要： A detection system and method may be used to detect data transmitted in a signal with data pattern dependent signal distortion. In general, a detection system and method compares samples of a received signal with stored samples of distorted signals associated with known data patterns and selects the known data patterns that correspond most closely with the samples of the received signal. The detection system and method may thus mitigate the effects of data pattern dependent signal distortion.

    摘要翻译： 可以使用检测系统和方法来检测在具有数据模式相关信号失真的信号中发送的数据。 通常，检测系统和方法将接收信号的样本与已知数据模式相关联的失真信号的存储样本进行比较，并且选择与接收信号的采样最紧密对应的已知数据模式。 因此，检测系统和方法可以减轻数据模式相关信号失真的影响。

    Detection of data in signals with data pattern dependent signal distortion
    6.
    发明授权
    Detection of data in signals with data pattern dependent signal distortion 有权
    检测具有数据模式相关信号失真的信号中的数据

    公开(公告)号：US08401400B2

    公开(公告)日：2013-03-19

    申请号：US12718132

    申请日：2010-03-05

    申请人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    发明人： Yi Cai ,  Morten Nissov ,  Alexei N. Pilipetskii

    IPC分类号： H04B10/06

    CPC分类号： H04J14/02 ,  H04B10/2507 ,  H04B10/697 ,  H04J14/0279

    摘要： A detection system and method may be used to detect data transmitted in a signal with data pattern dependent signal distortion. In general, a detection system and method compares samples of a received signal with stored samples of distorted signals associated with known data patterns and selects the known data patterns that correspond most closely with the samples of the received signal. The detection system and method may thus mitigate the effects of data pattern dependent signal distortion.

    摘要翻译： 可以使用检测系统和方法来检测在具有数据模式相关信号失真的信号中发送的数据。 通常，检测系统和方法将接收信号的样本与已知数据模式相关联的失真信号的存储样本进行比较，并且选择与接收信号的采样最紧密对应的已知数据模式。 因此，检测系统和方法可以减轻数据模式相关信号失真的影响。