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1. 发明申请

WO2014141260A1 PRE-COMPENSATION OF CHROMATIC DISPERSION USING COHERENT-LESS DSP 审中-公开
标题翻译：使用无源DSP对色散进行预补偿
公开(公告)号：WO2014141260A1
公开(公告)日：2014-09-18
申请号：PCT/IL2014/050260
申请日：2014-03-13
申请人： MULTIPHY LTD.
发明人： SADOT, Dan , GORSHTEIN, Albert , SHABTAI, Avraham
IPC分类号： H04B10/2513 , H04B10/2507 , H04J1/00
CPC分类号： H04B10/5053 , H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： A method of pre-compensating distortions of a time varying optical communication channel, comprising at the transmitter side, multiplexing of the input data streams to convert the rate of the input data streams to another desired rate at a plurality of data lanes with resulting symbols; encoding the symbols in the lanes at a sampling rate of at least the symbol rate; performing fixed pre-compensation of deterministic distortions; and performing adaptive pre-compensation of the channel, based on feedback from the channel or on side information. At the receiver side, post- compensating distortions by: adjusting the amplitude of the received signal to be at full swing in each data lane; digitizing the amplitude of the received signal to obtain a digital signal; performing adaptive ISI compensation of the symbols in each data lane; decoding the compensated symbols in the lanes to obtain a multiplexed data stream; and de- multiplexing the multiplexed data stream to reconstruct the transmitted input data streams; performing fixed pre-compensation of deterministic distortions in the channel by pre-filtering the incoming signal to reduce the aliasing; and performing adaptive post-compensation of the channel, based on blind channel estimation, channel feedback or side information.
摘要翻译：一种预补偿时变光通信信道的失真的方法，包括在发射机侧，多路复用输入数据流，以在具有所得符号的多个数据通道处将输入数据流的速率转换为另一期望速率; 以至少符号率的采样率对通道中的符号进行编码; 执行确定性扭曲的固定预补偿; 以及基于来自信道或侧面信息的反馈来执行信道的自适应预补偿。在接收机侧，通过以下方式补偿后补偿失真：在每个数据通道中调整接收信号的幅度为全速; 数字化接收信号的幅度以获得数字信号; 对每个数据通道中的符号执行自适应ISI补偿; 解码通道中的补偿符号以获得多路复用数据流; 并且对多路复用的数据流进行解复用以重构所发送的输入数据流; 通过对输入信号进行预滤波来对信道中的确定性失真进行固定预补偿，以减少混叠; 并且基于盲信道估计，信道反馈或侧信息来执行信道的自适应后补偿。

2. 发明申请

WO2013102898A1 SYMBOL SPACED ADAPTIVE MIMO EQUALIZATION FOR ULTRA HIGH BIT RATE OPTICAL COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于超高速率光通信系统的符号间距自适应MIMO均衡
公开(公告)号：WO2013102898A1
公开(公告)日：2013-07-11
申请号：PCT/IL2013/050006
申请日：2013-01-02
申请人： MULTIPHY LTD.
发明人： GORSHTEIN, Albert , SADOT, Dan
IPC分类号： H04B10/60 , H04B10/61 , H04J14/00 , H04B1/12 , H04B10/2507 , H04B10/2569
CPC分类号： H04L25/03891 , H04B10/2507 , H04B10/2569
摘要： System and method for equalizing a high bit rate optical communication channel in a symbol spaced adaptive Multiple-In-Multiple-Out (MIMO) system, where the optical communication channel carries a signal that is sampled at a symbol rate. Accordingly, Anti Aliasing Filtering (which introduces distortions in the form of Deterministic Inter Symbol Interference D-ISI) is applied in a MIMO channel, in order to reduce the aliasing effect associated with symbol rate sampling. The Polarization Mode Dispersions introduced in the optical communication channel are solely compensated by a MIMO Equalizer, which ignores the Deterministic ISI (D-ISI) distortion. Then the Deterministic ISI (D-ISI) distortion is solely compensated by an independent Deterministic Equalizer (DE).
摘要翻译：用于在符号间隔自适应多输入多输出（MIMO）系统中均衡高比特率光通信信道的系统和方法，其中光通信信道携带以符号速率采样的信号。因此，为了减少与符号率采样相关联的混叠效应，在MIMO信道中应用抗混叠滤波（其引入确定性符号间干扰D-ISI形式的失真）。在光通信信道中引入的极化模式分散体仅由MIMO均衡器补偿，忽略了确定性ISI（D-ISI）失真。然后，确定性ISI（D-ISI）失真仅由独立的确定性均衡器（DE）补偿。

3. 发明申请

WO2011073974A1 METHOD AND SYSTEM FOR COHERENT EQUALIZATION OF CHROMATIC DISPERSION OF OPTICAL SIGNALS IN A FIBER 审中-公开
标题翻译：用于光纤中光信号的色散均匀化的方法和系统
公开(公告)号：WO2011073974A1
公开(公告)日：2011-06-23
申请号：PCT/IL2010/001046
申请日：2010-12-13
申请人： MULTIPHY LTD. , SADOT, Dan , KATZ, Gilad , GORSHTEIN, Alik , LEVY, Omri
发明人： SADOT, Dan , KATZ, Gilad , GORSHTEIN, Alik , LEVY, Omri
IPC分类号： H03H7/30
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。

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