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公开(公告)号：US11038549B1
公开(公告)日：2021-06-15
申请号：US16895203
申请日：2020-06-08
申请人： James Harley , Andrew D. Shiner
发明人： James Harley , Andrew D. Shiner
IPC分类号： H04B1/62 , H04B17/345 , H04B1/10 , H04B1/04 , H04B17/336
摘要： A receiver is configured to generate a digital signal representative of data conveyed by a communication signal detected at the receiver, and to apply digital signal processing to the digital signal, thereby generating a processed signal. The receiver is further configured to determine a relative noise estimate for the processed signal, and to load an amount of digital noise into the digital signal processing based on a difference between the relative noise estimate and a target. As a result of the digital noise loading, improved stability of at least one control loop in the receiver may be achieved.
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公开(公告)号：US10784980B2
公开(公告)日：2020-09-22
申请号：US16593441
申请日：2019-10-04
申请人： Kim B. Roberts , James Harley , David Boertjes
发明人： Kim B. Roberts , James Harley , David Boertjes
IPC分类号： H04B10/2543 , H04B10/255 , H04B10/2557 , H04J14/02 , H04B10/079 , H04Q11/00 , H04B10/58
摘要： A processor of an apparatus is configured to apply one or more control algorithms using estimated data to adjust the one or more control parameters of a section of an optical fiber network. The estimated data are derived from measurements of optical signals in the section and from knowledge of the section. The estimated data is a function of optical nonlinearity and of amplified spontaneous emission.
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公开(公告)号：US20180343059A1
公开(公告)日：2018-11-29
申请号：US15648895
申请日：2017-07-13
申请人： James Harley , Kim B. Roberts , David Boertjes
发明人： James Harley , Kim B. Roberts , David Boertjes
IPC分类号： H04B10/25 , H04B10/27 , H04B10/079 , H04J14/02
CPC分类号： H04B10/2504 , H04B10/07955 , H04B10/27 , H04J14/0212 , H04J14/0221 , H04J14/0275
摘要： A processor of an apparatus is configured to apply one or more control algorithms using estimated data to adjust the one or more control parameters of a section of an optical fiber network. The estimated data are derived from measurements of optical signals in the section and from knowledge of the section. The estimated data is a function of optical nonlinearity and of amplified spontaneous emission.
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公开(公告)号：US09831987B2
公开(公告)日：2017-11-28
申请号：US15378834
申请日：2016-12-14
CPC分类号： H04L1/0063 , G06F11/10 , H03M13/152 , H03M13/2915 , H03M13/2918 , H03M13/2921 , H03M13/2945 , H03M13/2963 , H04L1/0045
摘要： Forward Error Correction technique: parity vectors are computed such that each parity vector spans multiple FEC frames; in a given FEC frame, a first set of syndrome bits are due to the parity vectors, and a second set of syndrome bits satisfy FEC equations that involve bits of the given FEC frame including the first set of syndrome bits; and the parity vectors are staggered with respect to any sequence in which the FEC frames are processed. Values of decoded bits of a first frame are deduced from known bits of a first parity vector having an effective length of one frame. For parity vectors having an effective length greater than one frame, a Log Likelihood Ratio of each unknown bit associated with the first frame is updated based on known and unknown bits of each parity vector. First frame is decoded using deduced bit values and updated LLR values.
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公开(公告)号：US20170093528A1
公开(公告)日：2017-03-30
申请号：US15378834
申请日：2016-12-14
CPC分类号： H04L1/0063 , G06F11/10 , H03M13/152 , H03M13/2915 , H03M13/2918 , H03M13/2921 , H03M13/2945 , H03M13/2963 , H04L1/0045
摘要： Forward Error Correction technique: parity vectors are computed such that each parity vector spans multiple FEC frames; in a given FEC frame, a first set of syndrome bits are due to the parity vectors, and a second set of syndrome bits satisfy FEC equations that involve bits of the given FEC frame including the first set of syndrome bits; and the parity vectors are staggered with respect to any sequence in which the FEC frames are processed. Values of decoded bits of a first frame are deduced from known bits of a first parity vector having an effective length of one frame. For parity vectors having an effective length greater than one frame, a Log Likelihood Ratio of each unknown bit associated with the first frame is updated based on known and unknown bits of each parity vector. First frame is decoded using deduced bit values and updated LLR values.
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公开(公告)号：US09537608B2
公开(公告)日：2017-01-03
申请号：US14564195
申请日：2014-12-09
CPC分类号： H04L1/0063 , G06F11/10 , H03M13/152 , H03M13/2915 , H03M13/2918 , H03M13/2921 , H03M13/2945 , H03M13/2963 , H04L1/0045
摘要： In a Forward Error Correction (FEC) technique, parity vectors are computed such that: each parity vector spans a set of frames; a subset of bits of each frame is associated with parity bits in each parity vector; and a location of parity bits associated with one frame in one parity vector is different from that of parity bits associated with the frame in another parity vector. Values of decoded bits of a first frame are deduced from known parity bits of a first parity vector having an effective length of one frame. For parity vectors having, an effective length greater than one frame, a Log Likelihood Ratio of each unknown parity bit associated with the first frame is updated based on known and unknown parity bits of each parity vector. The first frame is decoded using the deduced bit values and the updated LLR values.
摘要翻译： 在前向纠错（FEC）技术中，计算奇偶校验向量，使得：每个奇偶校验向量跨越一组帧; 每个帧的比特的子集与每个奇偶校验向量中的奇偶校验位相关联; 并且与一个奇偶校验向量中的一帧相关联的奇偶校验位的位置与在另一个奇偶校验向量中与该帧相关联的奇偶校验位的位置不同。 从具有一帧的有效长度的第一奇偶校验向量的已知奇偶校验位推导第一帧的解码比特的值。 对于具有大于一帧的有效长度的奇偶校验向量，基于每个奇偶校验向量的已知和未知奇偶校验位来更新与第一帧相关联的每个未知奇偶校验位的对数似然比。 使用推导的比特值和更新的LLR值对第一帧进行解码。
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公开(公告)号：US20160164632A1
公开(公告)日：2016-06-09
申请号：US14564195
申请日：2014-12-09
CPC分类号： H04L1/0063 , G06F11/10 , H03M13/152 , H03M13/2915 , H03M13/2918 , H03M13/2921 , H03M13/2945 , H03M13/2963 , H04L1/0045
摘要： In a Forward Error Correction (FEC) technique, parity vectors are computed such that: each parity vector spans a set of frames; a subset of bits of each frame is associated with parity bits in each parity vector; and a location of parity bits associated with one frame in one parity vector is different from that of parity bits associated with the frame in another parity vector. Values of decoded hits of a first frame are deduced from known parity bits of a first parity vector having an effective length of one frame. For parity vectors having, an effective length greater than one frame, a Log Likelihood Ratio of each unknown parity bit associated with the first frame is updated based on known and unknown parity bits of each parity valor. The first frame is decoded using the deduced bit values and the updated LLR values.
摘要翻译： 在前向纠错（FEC）技术中，计算奇偶校验向量，使得：每个奇偶校验向量跨越一组帧; 每个帧的比特的子集与每个奇偶校验向量中的奇偶校验位相关联; 并且与一个奇偶校验向量中的一帧相关联的奇偶校验位的位置与在另一个奇偶校验向量中与该帧相关联的奇偶校验位的位置不同。 从具有一帧的有效长度的第一奇偶校验向量的已知奇偶校验位推导第一帧的解码命中的值。 对于具有大于一帧的有效长度的奇偶校验向量，基于每个奇偶校验的已知和未知奇偶校验位来更新与第一帧相关联的每个未知奇偶校验位的对数似然比。 使用推导的比特值和更新的LLR值对第一帧进行解码。
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公开(公告)号：US07676161B2
公开(公告)日：2010-03-09
申请号：US11008515
申请日：2004-12-10
申请人： Kim Roberts , James Harley
发明人： Kim Roberts , James Harley
IPC分类号： H04B10/00
CPC分类号： H04B10/5053 , H04B10/505 , H04B10/5055 , H04B10/50572 , H04B10/50575 , H04B10/58
摘要： In a method of synthesizing an optical signal, a multi-bit digital representation of a desired optical E-field is generated. The multi-bit digital representation has a resolution of N1-bits, where N1 is an integer greater than 2. At least two analog drive signals are synthesized based on the multi-bit digital representation. Each analog drive signal exhibits excursions between 2M discrete states (i.e. has a resolution of M-bits), where M is an integer greater than 2. An electrical-to-optical (E/O) converter is driven using the analog drive signals to generate an output optical E-field at an output of the E/O converter. An error is detected between the output optical E-field and the desired complex E-field waveform, and at least one parameter adjusted so as to minimize the detected error.
摘要翻译： 在合成光信号的方法中，产生期望的光电场的多位数字表示。 多位数字表示具有N1位的分辨率，其中N1是大于2的整数。至少两个模拟驱动信号基于多位数字表示被合成。 每个模拟驱动信号表现出2M离散状态之间的偏移（即，具有M位的分辨率），其中M是大于2的整数。使用模拟驱动信号驱动电 - 光（E / O）转换器 在E / O转换器的输出端产生输出光电场。 在输出光电场和期望的复电场场波形之间检测到误差，并且调整至少一个参数以使检测到的误差最小化。
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公开(公告)号：US07558478B1
公开(公告)日：2009-07-07
申请号：US11362912
申请日：2006-02-28
申请人： James Harley , Kim B. Roberts , Michel Belanger
发明人： James Harley , Kim B. Roberts , Michel Belanger
CPC分类号： H04B10/0793
摘要： A method of controlling optical signal traffic in an optical network between a transmitter and a plurality of receivers, where the transmitter is adapted to compensate optical impairments based on at least one optical parameter, includes steps of identifying each path between the transmitter and the plurality of receivers, determining a respective optical parameter for each path, selecting one of the receivers for receiving an optical signal from the transmitter, and enabling the transmitter to generate the optical signal using the respective optical parameter of the path between the transmitter and the selected receiver. By preconfiguring compensation parameters for the various paths in the network, an all-optical network can be implemented wherein optical signals can be switched, added or dropped without having to match dispersion maps or perform optical-electrical-optical regeneration.
摘要翻译： 一种控制发射机和多个接收机之间的光网络中的光信号业务的方法，其中所述发射机适于基于至少一个光参数来补偿光学损伤，包括识别所述发射机与所述多个接收机之间的每个路径的步骤 接收机，为每个路径确定相应的光学参数，选择接收机之一以从发射机接收光信号，以及使发射机能够使用发射机和所选接收机之间的路径的相应光学参数来生成光信号。 通过预配置网络中各种路径的补偿参数，可以实现全光网络，其中光信号可被切换，添加或丢弃，而不必匹配色散图或进行光电光再生。
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公开(公告)号：US07369578B2
公开(公告)日：2008-05-06
申请号：US10609562
申请日：2003-07-01
申请人： Kim B Roberts , James Harley , Philippe Neusy , Michael Mayer
发明人： Kim B Roberts , James Harley , Philippe Neusy , Michael Mayer
CPC分类号： H04J3/076
摘要： In a method of estimating a bit rate (f1) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating node is processed to determine a result of a first function of the signal bit rate (f1) and a respective Tx local reference frequency (f2) of the originating node. A result of a second function of the Tx local reference frequency (f2) and a respective Rx local reference frequency (f3) of the terminating node is calculated. Finally, a result of a third function of the respective first and second function results is calculated, to derive an estimate of the signal bit rate (f4) relative to the Rx local reference frequency (f3).
摘要翻译： 在估计在始发节点和终止节点之间通过SONET网络传送的数字信号的比特率（f 1）的方法中，由始发节点接收的数字信号被处理以确定第一功能的结果 信号比特率（f 1）和相应的Tx本地参考频率（f 2）。 计算终端节点的Tx本地参考频率（f 2）和相应的Rx本地参考频率（f 3）的第二功能的结果。 最后，计算相应的第一和第二功能结果的第三功能的结果，以导出相对于Rx本地参考频率（f 3）的信号比特率（f 4）的估计。
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