-
公开(公告)号：US20120219288A1
公开(公告)日：2012-08-30
申请号：US13220318
申请日：2011-08-29
申请人： Kim B. Roberts , Jerome Chiabaut
发明人： Kim B. Roberts , Jerome Chiabaut
IPC分类号： H04B17/00
CPC分类号： H04J3/14 , H04J3/0605 , H04J3/0623 , H04J3/1611 , H04J3/1617 , H04L1/0002 , H04L1/0017
摘要： Link bandwidth is varied based on the subscriber traffic load. Varying the link bandwidth has the effect of varying the actual noise margin of the link (in an inverse elation), so that the noise margin will vary inversely with the traffic load. A beneficial result is that, because the noise margin is increased during “off-peak” traffic periods, rapidly varying and burst impairments can be absorbed without causing data loss. In effect, the respective probability distributions of error bursts and traffic load are separated. Data loss only becomes a significant risk when peaks in both distributions coincide. However, the probability of that event occurring is comparatively low. This enables a lower noise margin allocation during design of the link, which dramatically reduces the link cost.
摘要翻译： 链路带宽根据用户流量负载而变化。 改变链路带宽具有改变链路的实际噪声容限（反向相关）的效果，使得噪声容限将与业务负载成反比变化。 有利的结果是，由于在“非高峰”运行期间噪声容限增加，所以可以在不造成数据丢失的情况下吸收快速变化和爆发损伤。 实际上，错误突发和业务负载的各自的概率分布被分离。 数据丢失仅在两个分布的峰值一致时才成为重大风险。 然而，事件发生的概率相对较低。 这使得在链路设计期间能够进行更低的噪声容限分配，这显着降低了链路成本。
-
公开(公告)号：US08009985B1
公开(公告)日：2011-08-30
申请号：US10436129
申请日：2003-05-13
申请人： Kim B. Roberts , Jerome Chiabaut
发明人： Kim B. Roberts , Jerome Chiabaut
IPC分类号： H04J14/00
CPC分类号： H04J3/14 , H04J3/0605 , H04J3/0623 , H04J3/1611 , H04J3/1617 , H04L1/0002 , H04L1/0017
摘要： Link bandwidth is varied based on the subscriber traffic load. Varying the link bandwidth has the effect of varying the actual noise margin of the link (in an inverse relation), so that the noise margin will vary inversely with the traffic load. A beneficial result is that, because the noise margin is increased during “off-peak” traffic periods, rapidly varying and burst impairments can be absorbed without causing data loss. In effect, the respective probability distributions of error bursts and traffic load are separated. Data loss only becomes a significant risk when peaks in both distributions coincide. However, the probability of that event occurring is comparatively low. This enables a lower noise margin allocation during design of the link, which dramatically reduces the link cost.
摘要翻译： 链路带宽根据用户流量负载而变化。 改变链路带宽具有改变链路的实际噪声容限（反向关系）的效果，使得噪声容限将与业务负载成反比变化。 有利的结果是，由于在“非高峰”运行期间噪声容限增加，所以可以在不造成数据丢失的情况下吸收快速变化和爆发损伤。 实际上，错误突发和业务负载的各自的概率分布被分离。 数据丢失仅在两个分布的峰值一致时才成为重大风险。 然而，事件发生的概率相对较低。 这使得在链路设计期间能够进行更低的噪声容限分配，这显着降低了链路成本。
-
公开(公告)号：US08625998B2
公开(公告)日：2014-01-07
申请号：US13220318
申请日：2011-08-29
申请人： Kim B. Roberts , Jerome Chiabaut
发明人： Kim B. Roberts , Jerome Chiabaut
IPC分类号： H04B10/04
CPC分类号： H04J3/14 , H04J3/0605 , H04J3/0623 , H04J3/1611 , H04J3/1617 , H04L1/0002 , H04L1/0017
摘要： Link bandwidth is varied based on the subscriber traffic load. Varying the link bandwidth has the effect of varying the actual noise margin of the link (in an inverse elation), so that the noise margin will vary inversely with the traffic load. A beneficial result is that, because the noise margin is increased during “off-peak” traffic periods, rapidly varying and burst impairments can be absorbed without causing data loss. In effect, the respective probability distributions of error bursts and traffic load are separated. Data loss only becomes a significant risk when peaks in both distributions coincide. However, the probability of that event occurring is comparatively low. This enables a lower noise margin allocation during design of the link, which dramatically reduces the link cost.
摘要翻译： 链路带宽根据用户流量负载而变化。 改变链路带宽具有改变链路的实际噪声容限（反向相关）的效果，使得噪声容限将与业务负载成反比变化。 有利的结果是，由于在“非高峰”运行期间噪声容限增加，所以可以在不造成数据丢失的情况下吸收快速变化和爆发损伤。 实际上，错误突发和业务负载的各自的概率分布被分离。 数据丢失仅在两个分布的峰值一致时才成为重大风险。 然而，事件发生的概率相对较低。 这使得在链路设计期间能够进行更低的噪声容限分配，这显着降低了链路成本。
-
公开(公告)号：US11239929B1
公开(公告)日：2022-02-01
申请号：US17203332
申请日：2021-03-16
IPC分类号： H04B3/46 , H04B17/318
摘要： A receiver is configured to detect, at a communication interface, a received signal that suffers from degradations incurred over a communication channel. The receiver applies an adaptive filter to a series of received blocks of a digital representation of the received signal, thereby generating respective filtered blocks, where each received block represents 2N frequency bins, and where N is a positive integer. The receiver calculates coefficients for use by the adaptive filter on a jth received block as a function of (i) error estimates associated with an (j−D−1)th filtered block, where D is a positive integer representing a number of blocks, and where j is a positive integer greater than (D−1); and (ii) an inverse of an approximate covariance matrix associated with the (j−D−1)th received block, where the approximate covariance matrix is a diagonal matrix of size L×L, and where L is a positive integer lower than 2N.
-
公开(公告)号：US11233568B1
公开(公告)日：2022-01-25
申请号：US17090135
申请日：2020-11-05
IPC分类号： H04B10/06 , H04B10/2507 , H04B10/2569 , H04B10/67 , H04B10/532 , H04B10/69
摘要： A receiver is configured to detect, at a communication interface, a received signal that suffers from degradations incurred over a communication channel. The receiver applies an adaptive filter to a series of received blocks of a digital representation of the received signal, thereby generating respective filtered blocks. The receiver calculates coefficients for use by the adaptive filter on an jth received block as a function of (i) error estimates associated with an (j−D−1)th filtered block, where D is a positive integer representing a number of blocks, and where j is a positive integer greater than (D−1); and (ii) delay compensation terms dependent on an estimate of a difference between coefficients used by the adaptive filter on an (j−D−1)th received block and coefficients used by the adaptive filter on an (j−1)th received block
-
公开(公告)号：US11082157B2
公开(公告)日：2021-08-03
申请号：US16666520
申请日：2019-10-29
摘要： A system is configured to measure a forward error correction (FEC) decoding property associated with applying FEC decoding to FEC-encoded bits or symbols at a receiver device deployed in a communication network. The system is further configured to provide an assessment of operating conditions of the receiver device based on the FEC decoding property. In one example, the FEC decoding property comprises a distribution of a number of iterations of a FEC decoding operation applied to a plurality of FEC blocks processed within a period of time. In some examples, the FEC decoding property comprises any one of heat, temperature, current, voltage, active clock cycles, idle clock cycles, activity of parallel engines, activity of pipeline stages, and input or output buffer fill level of the FEC decoding. In some examples, the assessment is based on a comparison between the FEC decoding property and reference FEC data.
-
公开(公告)号：US10200149B2
公开(公告)日：2019-02-05
申请号：US15250553
申请日：2016-08-29
申请人： Kim B. Roberts , Amir K. Khandani
发明人： Kim B. Roberts , Amir K. Khandani
摘要： A super-frame for transmission in an optical communications system comprises two or more data frames and a parity frame. All frames in the super-frame have been encoded in accordance with a first Forward Error Correction (FEC) scheme. The parity frame is computed over the two or more data frames (prior to or concurrently with or after encoding via the first FEC scheme) according to a second FEC scheme. At a receiver, the super-frame is decoded in accordance with the first FEC scheme to generate a set of FEC decoded frames in which residual errors are clustered, that is, are non-Poisson. The second FEC scheme, which is particularly suited or designed to correct the clustered non-Poisson residual errors, is used to correct the residual errors.
-
公开(公告)号：US20180343078A1
公开(公告)日：2018-11-29
申请号：US15796393
申请日：2017-10-27
IPC分类号： H04J14/02 , H04B10/079 , H04Q11/00 , H04B10/58
CPC分类号： H04J14/0221 , H04B10/0793 , H04B10/07955 , H04B10/2543 , H04B10/255 , H04B10/2557 , H04B10/58 , H04B2210/254 , H04J14/0275 , H04Q11/0066 , H04Q2011/0041 , H04Q2011/0083
摘要： Multiple receivers are comprised in a flexible coherent transceiver of a multi-span optical fiber network. Each of the multiple receivers is operative to handle communications on a respective channel. The multiple receivers measure optical characteristics. For each of the multiple receivers, the optical characteristics include optical nonlinear interactions on the respective channel, the optical nonlinear interactions being at least partially dependent from one span to another span. An optical power of a signal on each of the multiple channels is adjusted as a function of the optical characteristics.
-
公开(公告)号：US20180343058A1
公开(公告)日：2018-11-29
申请号：US15603810
申请日：2017-05-24
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 , H04B10/079 , H04J14/02 , H04B10/27
摘要： Adjustment of one or more control parameters of a section of an optical fiber network involves taking measurements of optical signals in the section, deriving estimated data from the measurements and from knowledge of the section, where the estimated data is a function of optical nonlinearity and of amplified spontaneous emission, and applying one or more control algorithms using the estimated data to adjust the one or more control parameters.
-
公开(公告)号：US09461751B2
公开(公告)日：2016-10-04
申请号：US13718211
申请日：2012-12-18
IPC分类号： H04B10/548 , H04B10/40 , H04B10/61
CPC分类号： H04B10/516 , H04B10/505 , H04B10/548 , H04B10/616
摘要： A method of transmitting a data signal in an optical communications system. The method includes processing the data signal to generate an analog drive signal, wherein the processing comprises applying a first non-linear operation such that frequency components of the drive signal lay in at least two separated spectral bands. An optical carrier light is modulated using the analog drive signal.
摘要翻译： 一种在光通信系统中发送数据信号的方法。 该方法包括处理数据信号以产生模拟驱动信号，其中该处理包括施加第一非线性操作，使得驱动信号的频率分量位于至少两个分离的频谱带中。 使用模拟驱动信号调制光载波。
-
-
-
-
-
-
-
-
-
搜索结果
129 条记录 (耗时 0.03 秒)
