公开(公告)号：US09537578B2

公开(公告)日：2017-01-03

申请号：US13515397

申请日：2010-12-13

申请人： Dan Sadot ,  Gilad Katz ,  Alik Gorshtein ,  Omri Levi

发明人： Dan Sadot ,  Gilad Katz ,  Alik Gorshtein ,  Omri Levi

IPC分类号： H04B10/06 ,  H04B10/61

CPC分类号： H04B10/613 ,  H04B10/616

摘要： Method and system for optimally equalizing distortion of an optical data channel carrying coherent optical signals with a given analog bandwidth B. A receiving end with IQ paths receives signals and a balanced detector detects signals in each path. The bandwidth of the detected signals is reduced by a factor of N by filtering the output of each path using an AAF with a cutoff frequency optimized to the analog bandwidth 2B/N of each path, where the AAF has deterministic attributes and introducing Known ISI. The signal is sampled at the AAF output by an ADC, at a sampling rate of 2B/N. The samples of each path are post-processed by a digital processor operating at a data rate of 2B/N, where post-processing represents the compensation of the distortion and the input data stream is reconstructed by optimally decoding the output of the processor using a decoder, which compensates the ISI.

摘要翻译： 用于以给定的模拟带宽B最佳地平衡携带相干光信号的光数据通道的失真的方法和系统。具有IQ路径的接收端接收信号，并且平衡检测器检测每个路径中的信号。 通过使用针对每个路径的模拟带宽2B / N优化的截止频率的AAF对每个路径的输出进行滤波来将检测到的信号的带宽减小N倍，其中AAF具有确定性属性并引入已知的ISI。 信号在ADC的AAF输出采样，采样率为2B / N。 每个路径的采样由以2B / N的数据速率操作的数字处理器进行后处理，其中后处理表示失真的补偿，并且通过使用以下步骤对处理器的输出进行最佳解码来重构输入数据流 解码器，可以补偿ISI。

公开(公告)号：US20120251112A1

公开(公告)日：2012-10-04

申请号：US13515397

申请日：2010-12-13

申请人： Dan Sadot ,  Gilad Katz ,  Alik Gorshtein ,  Omri Levi

发明人： Dan Sadot ,  Gilad Katz ,  Alik Gorshtein ,  Omri Levi

IPC分类号： H04B10/18 ,  H04J14/06

CPC分类号： H04B10/613 ,  H04B10/616

摘要： Method and system for optimally equalizing distortion of an optical data channel carrying coherent optical signals with a given analog bandwidth B. A receiving end with IQ paths receives signals and a balanced detector detects signals in each path. The bandwidth of the detected signals is reduced by a factor of N by filtering the output of each path using an AAF with a cutoff frequency optimized to the analog bandwidth 2B/N of each path, where the AAF has deterministic attributes and introducing Known ISI. The signal is sampled at the AAF output by an ADC, at a sampling rate of 2B/N. The samples of each path are post-processed by a digital processor operating at a data rate of 2B/N, where post-processing represents the compensation of the distortion and the input data stream is reconstructed by optimally decoding the output of the processor using a decoder, which compensates the ISI.

摘要翻译： 用于以给定的模拟带宽B最佳地平衡携带相干光信号的光数据通道的失真的方法和系统。具有IQ路径的接收端接收信号，并且平衡检测器检测每个路径中的信号。 通过使用针对每个路径的模拟带宽2B / N优化的截止频率的AAF对每个路径的输出进行滤波来将检测到的信号的带宽减小N倍，其中AAF具有确定性属性并引入已知的ISI。 信号在ADC的AAF输出采样，采样率为2B / N。 每个路径的采样由以2B / N的数据速率操作的数字处理器进行后处理，其中后处理表示失真的补偿，并且通过使用以下步骤对处理器的输出进行最佳解码来重构输入数据流 解码器，可以补偿ISI。