公开(公告)号：EP3001585A1

公开(公告)日：2016-03-30

申请号：EP14306516.7

申请日：2014-09-29

申请人： ALCATEL LUCENT

发明人： Razzetti, Luca ,  Gavioli, Giancarlo ,  Pepe, Marianna ,  Costantini, Carlo

IPC分类号： H04B10/61 ,  H03M13/05 ,  H03M13/11 ,  H03M13/37 ,  H03M13/45 ,  H03M13/00 ,  H04L1/00

CPC分类号： H04L1/005 ,  H03M13/1111 ,  H03M13/1145 ,  H03M13/2963 ,  H03M13/2987 ,  H03M13/3746 ,  H03M13/6561 ,  H04B10/616 ,  H04L1/0057

摘要： It is disclosed an optical coherent receiver comprising a number of decoding blocks configured to implement iterations of a FEC iterative message-passing decoding algorithm. The decoding blocks are distributed into two (or more) parallel chains of cascaded decoding blocks. The receiver also comprises an intermediate circuit interposed between the two parallel chains. The optical coherent receiver is switchable between (i) a first operating mode, in which the intermediate circuit is inactive and the two parallel chains separately implement the FEC message-passing decoding algorithm on respective client channels; and (ii) a second operating mode, in which the intermediate circuit is active and the two parallel chains jointly implement the FEC message-passing decoding algorithm on a same client channel, by cooperating through the intermediate circuit.

摘要翻译： 公开了一种光学相干接收机，其包括多个解码块，其被配置为实现FEC迭代消息传递解码算法的迭代。 解码块被分配到级联解码块的两个（或更多个）并行链中。 接收器还包括插入在两个平行链之间的中间电路。 光相干接收机可以在（i）中间电路不活动的第一操作模式和两个并行链在各个客户信道上分别实现FEC消息传递解码算法之间切换; 以及（ii）第二操作模式，其中中间电路是活动的，并且两个并行链通过中间电路协作在同一客户信道上共同实施FEC消息传递解码算法。

公开(公告)号：EP3001585B1

公开(公告)日：2017-07-12

申请号：EP14306516.7

申请日：2014-09-29

申请人： ALCATEL LUCENT

发明人： Razzetti, Luca ,  Gavioli, Giancarlo ,  Pepe, Marianna ,  Costantini, Carlo

IPC分类号： H03M13/29 ,  H04L1/00 ,  H04B10/61 ,  H03M13/00 ,  H03M13/11 ,  H03M13/37

CPC分类号： H04L1/005 ,  H03M13/1111 ,  H03M13/1145 ,  H03M13/2963 ,  H03M13/2987 ,  H03M13/3746 ,  H03M13/6561 ,  H04B10/616 ,  H04L1/0057

公开(公告)号：EP2833554A1

公开(公告)日：2015-02-04

申请号：EP13306105.1

申请日：2013-07-31

申请人： ALCATEL LUCENT

发明人： Schmalen, Laurent ,  Pepe, Marianna

IPC分类号： H03M13/11 ,  H03M13/25 ,  H04B10/61 ,  H04L1/00 ,  H03M13/00

CPC分类号： H03M13/1168 ,  H03M13/255 ,  H03M13/616 ,  H03M13/6516 ,  H04B10/613 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0057

摘要： Some embodiments relate to an encoder (830) comprising a differential encoder (810) operable to provide a differentially encoded signal (811) based on an input signal (105) and a differential encoding rule; and an LDPC encoder (806) operable to provide an LDPC encoded signal (807) based on the differentially encoded signal (811) and based on an LDPC encoding rule corresponding to an M'S × N'S parity check matrix ( H ') comprising a plurality of S × S permutation sub-matrices with an even number of non-zero entries in each row of an S × S sub-matrix. Further embodiments relate to a decoder (840) comprising an LDPC decoder (822) operable to provide an output signal (823) based on an input signal (821) and based on an LDPC decoding rule corresponding to an M'S × N'S parity check matrix ( H ') comprising a plurality of S × S permutation sub-matrices with an even number of non-zero entries in each row of an S × S sub-matrix; and a differential decoder (818) operable to provide a decoded signal (819) based on the output signal (823) from the LDPC decoder (822) and a differential decoding rule.

摘要翻译： 一些实施例涉及包括差分编码器（810）的编码器（830），差分编码器可操作以基于输入信号（105）和差分编码规则提供差分编码信号（811） 以及LDPC编码器（806），其可操作以基于所述差分编码信号（811）提供LDPC编码信号（807），并且基于对应于包括多个编码信号的M'S×N'S奇偶校验矩阵（H'）的LDPC编码规则 S×S子矩阵的每一行中具有偶数个非零项的S×S置换子矩阵。 另外的实施例涉及一种包括LDPC解码器（822）的解码器（840），其可操作以基于输入信号（821）提供输出信号（823），并且基于对应于M'S×N奇偶校验矩阵的LDPC解码规则 H'）包括在S×S子矩阵的每一行中具有偶数个非零条目的多个S×S置换子矩阵; 以及差分解码器（818），其可操作以基于来自LDPC解码器（822）的输出信号（823）和差分解码规则提供解码信号（819）。

公开(公告)号：EP2806584A1

公开(公告)日：2014-11-26

申请号：EP13305677.0

申请日：2013-05-24

申请人： ALCATEL LUCENT

发明人： Razzetti, Luca Gabriele ,  Gavioli, Giancarlo ,  Pepe, Marianna ,  Costantini, Carlo

IPC分类号： H04B10/61 ,  H04L27/00

摘要： Embodiments relate to an apparatus (100; 300; 400; 500; 600) for recovering a phase of a received signal (S in ) carrying pilot and information symbols, wherein the received signal has been transmitted over a communication channel (200), the apparatus comprising a phase estimator (110) operable to determine a phase estimate (115) of a phase of the communication channel using the received signal, wherein the phase estimator (110) commits a phase slip with a phase slip probability (P S , P T ) depending on the communication channel (200); a demodulator (120) operable to determine demodulated pilot and information symbols (125) based on a coherent reception of the received pilot and information symbols using the determined phase estimate (115); a phase slip detector (130; 330; 430; 530; 630) operable to detect the phase slip based on a phase difference between at least one demodulated pilot symbol and at least one corresponding transmitted pilot symbol; and a phase corrector (140; 340; 440; 540) operable to correct a phase of demodulated information symbols based on the detected phase slip.

摘要翻译： 实施例涉及在设备（100; 300; 400; 500; 600）用于回收携带导频和信息符号，worin所接收的信号的接收信号（S）的相位已经反mitted通过通信信道（200），所述 装置使用接收到的信号包括所述通信信道的相位的相位估计器（110），可操作以确定矿相位估计（115），worin相位估计器（110）款具有相位滑移概率相位滑移（PS，PT） 取决于通信信道（200）上; 解调器（120）可操作以基于使用所述确定性开采相位估计（115）所述接收的导频和信息符号的相干接收确定性矿解调的导频和信息码元（125）; 相位检测器滑移（130; 330; 430; 530; 630）可操作以基于至少一个解调导频码元和至少一个相应的反式mitted导频码元之间的相位差来检测相位滑移; 和相位校正器（140; 340; 440; 540），其可操作来校正基于检测到的相位滑移解调信息符号的相位。

公开(公告)号：EP2806584B1

公开(公告)日：2020-03-04

申请号：EP13305677.0

申请日：2013-05-24

申请人： Alcatel Lucent

发明人： Razzetti, Luca Gabriele ,  Gavioli, Giancarlo ,  Pepe, Marianna ,  Costantini, Carlo

IPC分类号： H04B10/61 ,  H04L27/227 ,  H04L27/00

公开(公告)号：EP2819310A1

公开(公告)日：2014-12-31

申请号：EP13305884.2

申请日：2013-06-26

申请人： ALCATEL LUCENT

发明人： Razzetti, Luca Gabriele ,  Costantini, Carlo ,  Pepe, Marianna ,  Gavioli, Giancarlo

IPC分类号： H03M13/11

CPC分类号： H03M13/1145 ,  H03M13/1128

摘要： It is disclosed a forward error correction decoder for a network element of a communication network. The decoder comprises a first decoding stage configured to receive an input data block, the first decoding stage comprising a plurality of decoding units connected in cascade, each of said decoding units being configured to perform one iteration of a forward error correction decoding procedure on said input data block. The first decoding stage is further configured to output an output data block. The decodes also comprises a second decoding stage comprising a further decoding unit configured to: receive the output data block in case the output data block is not correct; and perform a number of further iterations of the forward error correction decoding procedure on the output data block until a termination condition is fulfilled, the number of further iterations being equal to or higher than 1.

摘要翻译： 公开了一种用于通信网络的网元的前向纠错解码器。 解码器包括被配置为接收输入数据块的第一解码级，第一解码级包括级联连接的多个解码单元，每个解码单元被配置为对所述输入执行前向纠错解码过程的一次迭代 数据块。 第一解码级还被配置为输出输出数据块。 解码还包括第二解码级，其包括另外的解码单元，其被配置为：在输出数据块不正确的情况下接收输出数据块; 并且对输出数据块执行前向纠错解码过程的多个进一步迭代，直到满足终止条件，进一步迭代次数等于或高于1。

公开(公告)号：EP2538596A1

公开(公告)日：2012-12-26

申请号：EP11305776.4

申请日：2011-06-21

申请人： Alcatel Lucent

发明人： Razzetti, Luca ,  Costantini, Carlo ,  Pepe, Marianna ,  Leven, Andreas ,  ten Brink, Stephan ,  Schmalen, Laurent

IPC分类号： H04L1/00

CPC分类号： H04L1/0045 ,  H04B10/6165 ,  H04L1/0047 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/0057

摘要： Proposed is a method of decoding a differentially encoded PSK modulated optical data signal carrying FEC encoded data values. The optical signal is corrected by an estimated phase offset. From the corrected signal, respective likelihood values for the FEC encoded data values are derived, using an estimation algorithm which accounts for a differential encoding rule used for differentially encoding the optical signal. The derived likelihood values are limited to a predetermined range of values. From the limited likelihood values, FEC decoded data values are derived, using an algorithm which accounts for a FEC encoding rule used for FEC encoding the FEC encoded data values.

摘要翻译： 提出了一种差分编码PSK调制携带FEC编码数据值的光数据信号进行解码的方法。 的光信号通过在估计的相位偏移校正。 从校正的信号，为对FEC编码后的数据值respectivement似然值被导出，使用估计算法占用于差分编码的光信号的差分编码规则的。 的可能性得到的值被限制到预定的值的范围。 从有限的似然值，FEC解码值被导出的数据，使用在算法占用于FEC编码的FEC编码后的数据值的FEC编码规则。

公开(公告)号：EP2916507B1

公开(公告)日：2019-11-06

申请号：EP14305306.4

申请日：2014-03-04

申请人： Alcatel Lucent

发明人： Razzetti, Luca Gabriele ,  Pepe, Marianna

IPC分类号： H04L27/34

公开(公告)号：EP2966827B1

公开(公告)日：2017-10-25

申请号：EP14306110.9

申请日：2014-07-07

申请人： ALCATEL LUCENT

发明人： Razzetti, Luca ,  Costantini, Carlo ,  Gavioli, Giancarlo ,  Pepe, Marianna ,  Renaudier, Jeremie

IPC分类号： H04L27/34 ,  H04B10/516

CPC分类号： H04L27/34 ,  H04B10/516

公开(公告)号：EP2930865A1

公开(公告)日：2015-10-14

申请号：EP14305505.1

申请日：2014-04-07

申请人： ALCATEL LUCENT

发明人： Gavioli, Giancarlo ,  Razzetti, Luca ,  Pepe, Marianna ,  Costantini, Carlo

IPC分类号： H04B10/61

CPC分类号： H04B10/6165

摘要： It is disclosed a an apparatus for compensating transmitter quadrature imbalances over an optical signal received at an optical coherent receiver of a node of an optical communication network. The optical signal comprises information symbols and pilot symbols. The receiver is configured to store a sequence of reference pilot symbols. The apparatus comprises an absolute phase estimating circuit configured to estimate a phase error between a received pilot symbol and a corresponding reference pilot symbol; a phase correcting module configured to remove the phase error from the received pilot symbol and a number of received information symbols associated with the received pilot symbol; a quadrature imbalance detection circuit configured to estimate the transmitter quadrature imbalances on the basis of at least the phase-corrected pilot symbol; and a quadrature imbalance compensation circuit configured to compensate the estimated transmission quadrature imbalances over the number of phase-corrected information symbols.

摘要翻译： 公开了一种用于在光通信网络的节点的光学相干接收机处接收的光信号上补偿发射机正交不平衡的装置。 光信号包括信息符号和导频符号。 接收器被配置为存储参考导频符号序列。 该装置包括绝对相位估计电路，被配置为估计接收到的导频符号和对应的参考导频符号之间的相位误差; 相位校正模块，被配置为从所接收的导频符号中去除相位误差和与所接收的导频符号相关联的接收到的信息符号数; 正交不平衡检测电路，被配置为基于至少相位校正的导频符号来估计发射机正交不平衡; 以及正交不平衡补偿电路，被配置为相对于相位校正的信息符号的数量来补偿估计的发送正交不平衡。