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1. 发明授权

US08160453B1 Protection switching with transmitter compensation function 失效
标题翻译：带变送器补偿功能的保护开关
公开(公告)号：US08160453B1
公开(公告)日：2012-04-17
申请号：US11392908
申请日：2006-03-30
申请人： James Harley , Gerard Swinkels , Michael Watford
发明人： James Harley , Gerard Swinkels , Michael Watford
IPC分类号： H04B10/04
CPC分类号： H04B10/0775 , H04B10/032 , H04B10/0777 , H04B2210/254
摘要： A method of protection switching between first and second transceivers where dispersion compensation is effected electrically in the transmitters. The method includes detecting, at the second transceiver, a signal failure of a signal transmitted from the first transceiver and, upon detecting the signal failure, signalling the first transceiver to change its compensation function. The signalling can be done by encoding overhead bits in a signal transmitted from the second to the first transceiver. Another method of protection switching includes both transceivers toggling alternate reception paths upon detecting a signal failure and changing their dispersion compensation function to that of their respective alternate path.
摘要翻译：一种保护在第一和第二收发器之间切换的方法，其中色散补偿在发射机中进行电气化。该方法包括在第二收发器处检测从第一收发器发送的信号的信号故障，并且在检测到信号故障时，发信号通知第一收发器改变其补偿功能。可以通过对从第二收发器发送的信号中的开销比特进行编码来完成信令。保护切换的另一种方法包括两个收发器在检测到信号故障时切换交替接收路径，并将它们的色散补偿功能改变为它们各自的备选路径的方法。

2. 发明授权

US08682179B1 Protection switching with transmitter compensation function 失效
标题翻译：带变送器补偿功能的保护开关
公开(公告)号：US08682179B1
公开(公告)日：2014-03-25
申请号：US13446278
申请日：2012-04-13
申请人： James Harley , Gerard Swinkels , Michael Watford
发明人： James Harley , Gerard Swinkels , Michael Watford
IPC分类号： H04B10/077
CPC分类号： H04B10/0775 , H04B10/032 , H04B10/0777 , H04B2210/254
摘要： A method of protection switching between first and second transceivers where dispersion compensation is effected electrically in the transmitters. The method includes detecting, at the second transceiver, a signal failure of a signal transmitted from the first transceiver and, upon detecting the signal failure, signalling the first transceiver to change its compensation function. The signalling can be done by encoding overhead bits in a signal transmitted from the second to the first transceiver. Another method of protection switching includes both transceivers toggling alternate reception paths upon detecting a signal failure and changing their dispersion compensation function to that of their respective alternate path.
摘要翻译：一种保护在第一和第二收发器之间切换的方法，其中色散补偿在发射机中进行电气化。该方法包括在第二收发器处检测从第一收发器发送的信号的信号故障，并且在检测到信号故障时，发信号通知第一收发器改变其补偿功能。可以通过对从第二收发器发送的信号中的开销比特进行编码来完成信令。保护切换的另一种方法包括两个收发器在检测到信号故障时切换交替接收路径，并将它们的色散补偿功能改变为它们各自的备选路径的方法。

3. 发明申请

US20200036468A1 Adjustment of Control Parameters of Section of Optical Fiber Network 审中-公开
公开(公告)号：US20200036468A1
公开(公告)日：2020-01-30
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： H04J14/02 , H04B10/2543 , 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.

4. 发明授权

US10236981B2 Adjustment of control parameters of section of optical fiber network 有权
公开(公告)号：US10236981B2
公开(公告)日：2019-03-19
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： H04B10/294 , H04B10/25 , H04B10/079 , H04B10/27 , H04J14/02
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.

5. 发明申请

US20100031114A1 LOW DENSITY PARITY CHECK (LDPC) DECODER USING BROADCAST MESSAGING 有权
标题翻译：低密度奇偶校验（LDPC）解码器使用广播消息传递
公开(公告)号：US20100031114A1
公开(公告)日：2010-02-04
申请号：US12182575
申请日：2008-07-30
申请人： Kim B. Roberts , Manoj Verghese , James Harley , David Damian Nicholas Bevan
发明人： Kim B. Roberts , Manoj Verghese , James Harley , David Damian Nicholas Bevan
IPC分类号： H03M13/11 , G06F11/00 , G06F11/10
CPC分类号： H03M13/1134 , H03M13/1114 , H04L1/0052 , H04L1/0057
摘要： In a decoder implementing a belief propagation algorithm for iteratively decoding a Low Density Parity Check (LDPC) encoded data block, a method of computing messages to be sent by a first node of the decoder to at least one neighbour node of the decoder. The method comprises: processing messages received by the first node to remove an echo of a previous message sent by the first node to the at least one neighbour node in a previous iteration, to yield corresponding modified messages; computing a message for a current iteration using the modified messages; and broadcasting the computed message for the current iteration to each of the at least one neighbour nodes.
摘要翻译：在实现用于对低密度奇偶校验（LDPC）编码数据块进行迭代解码的置信传播算法的解码器中，一种计算将要由解码器的第一节点发送到解码器的至少一个相邻节点的消息的方法。该方法包括：处理由第一节点接收的消息，以将先前迭代中的第一节点发送的先前消息的回波消除到至少一个相邻节点，以产生相应的修改消息; 使用修改的消息计算当前迭代的消息; 以及将针对当前迭代的所计算的消息广播到所述至少一个相邻节点中的每一个。

6. 发明申请

US20050002403A1 Digital processing of sonet pointers 有权
标题翻译： sonet指针的数字处理
公开(公告)号：US20050002403A1
公开(公告)日：2005-01-06
申请号：US10609562
申请日：2003-07-01
申请人： Kim Roberts , James Harley , Philippe Neusy , Michael Mayer
发明人： Kim Roberts , James Harley , Philippe Neusy , Michael Mayer
IPC分类号： H04J3/06 , H04J3/07 , H04L12/28
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：在估计通过始发节点和终止节点之间的SONET网络传送的数字信号的比特率（f1）的方法中，处理由始发节点接收的数字信号以确定信号的第一功能的结果比特率（f1）和相应的Tx本地参考频率（f2）。计算终端节点的Tx本地参考频率（f2）和相应Rx本地参考频率（f3）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（f3）的信号比特率（f4）的估计。

7. 发明授权

US11038549B1 Receiver noise loading for control loop stability 有权
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.

8. 发明授权

US10784980B2 Adjustment of control parameters of section of optical fiber network 有权
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.

9. 发明申请

US20180343059A1 Adjustment of Control Parameters of Section of Optical Fiber Network 审中-公开
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.

10. 发明授权

US09831987B2 Staggered parity 有权
公开(公告)号：US09831987B2
公开(公告)日：2017-11-28
申请号：US15378834
申请日：2016-12-14
申请人： Shahab Oveis Gharan , James Harley , Kim B. Roberts
发明人： Shahab Oveis Gharan , James Harley , Kim B. Roberts
IPC分类号： H04L1/00 , G06F11/10 , H03M13/15 , H03M13/29
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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