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1. 发明申请

WO2012013250A1 PHASE NOISE COMPENSATION IN COHERENT OPTICAL COMMUNICATIONS SYSTEMS 审中-公开
标题翻译：相干光通信系统中的相位噪声补偿
公开(公告)号：WO2012013250A1
公开(公告)日：2012-02-02
申请号：PCT/EP2010/062866
申请日：2010-09-02
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SECONDINI, Marco , FOGGI, Tommaso , COLAVOLPE, Giulio , MELONI, Gianluca , POTI, Luca , FORESTIEREI, Enrico
发明人： SECONDINI, Marco , FOGGI, Tommaso , COLAVOLPE, Giulio , MELONI, Gianluca , POTI, Luca , FORESTIEREI, Enrico
IPC分类号： H04B10/145 , H04B10/148 , H04B10/158
CPC分类号： H04B10/671 , H04B10/50 , H04B10/60
摘要： A method (10) of compensating phase noise in a coherent optical communications network. The method comprises: receiving a traffic sample (12); receiving an optical carrier and determining a phase noise estimate for the optical carrier (14); and removing the phase noise estimate from the traffic sample to form a phase noise compensated traffic sample (16).
摘要翻译：一种在相干光通信网络中补偿相位噪声的方法（10）。该方法包括：接收业务样本（12）; 接收光载波并确定所述光载波（14）的相位噪声估计; 以及从所述业务样本中去除相位噪声估计以形成相位噪声补偿业务样本（16）。

2. 发明申请

WO2012041399A1 ADAPTIVE EQUALISER WITH ASYNCHRONOUS DETECTION AND INHIBIT SIGNAL GENERATOR 审中-公开
标题翻译：具有异常检测和抑制信号发生器的自适应均衡器
公开(公告)号：WO2012041399A1
公开(公告)日：2012-04-05
申请号：PCT/EP2010/065558
申请日：2010-10-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , FOGGI, Tommaso , COLAVOLPE, Giulio
发明人： FOGGI, Tommaso , COLAVOLPE, Giulio
IPC分类号： H04L25/03
CPC分类号： H04L27/01 , H04L25/0305 , H04L2025/03694
摘要： Generating updated coefficients for an adaptive equaliser involves generating (910) phase tracking information using asynchronous detection strategy ADS based on resolved data, and equalised signals, and estimating (920) a phase corrected error based on the equalised signals, the phase tracking information and the resolved data. An inhibit signal is generated (930) to inhibit updating of the equalisation coefficients, the inhibit signal representing a likelihood of the phase corrected error being accurate, determined according to the phase corrected error, and the equalised signals. The equalisation coefficients for the equaliser are adapted (940) based on the received signals, and on the phase corrected error, and the adapting is inhibited according to the inhibit signal. Compared to conventional ADS, the new combination with the inhibit signal can enable improved convergence of coefficient adaptation. This is particularly useful for coherent receivers for optical systems.
摘要翻译：生成用于自适应均衡器的更新系数涉及使用基于分辨数据的异步检测策略ADS和均衡信号来产生（910）相位跟踪信息，并且基于均衡信号估计（920）相位校正误差，相位跟踪信息和解析数据。产生抑制信号（930）以阻止均衡系数的更新，根据相位校正误差确定相位校正误差准确的可能性的禁止信号和均衡信号。均衡器的均衡系数基于接收到的信号和相位校正误差被适应（940），并且根据禁止信号禁止适配。与常规ADS相比，具有抑制信号的新组合可以改善系数适应的收敛性。这对于光学系统的相干接收机特别有用。

3. 发明申请

WO2007112790A1 MAXIMUM LIKELIHOOD SEQUENCE ESTIMATION IN OPTICAL FIBRE COMMUNICATION SYSTEMS 审中-公开
标题翻译：光纤通信系统中最大似然序列估计
公开(公告)号：WO2007112790A1
公开(公告)日：2007-10-11
申请号：PCT/EP2006/069168
申请日：2006-11-30
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , FOGGI, Tommaso , COLAVOLPE, Giulio , FORESTIERI, Enrico , PRATI, Giancarlo
发明人： FOGGI, Tommaso , COLAVOLPE, Giulio , FORESTIERI, Enrico , PRATI, Giancarlo
IPC分类号： H04B10/158 , H04L1/00 , H03M13/41
CPC分类号： H03M13/6331 , H03M13/3961 , H03M13/41 , H04B10/66 , H04L1/0054
摘要： A method of and a receiver(20) for detection of a received signal in an optical fibre communication system using Viterbi algorithm methodology in which branch metrics are obtained using approximated expressions to calculate the branch metrics. Use of the expressions results in practically the same performance as a receiver based on exact metrics.
摘要翻译：一种用于在使用维特比算法方法的光纤通信系统中检测接收信号的方法和接收机（20），其中使用近似表达式获得分支度量以计算分支度量。表达式的使用导致与基于精确度量的接收器几乎相同的性能。

4. 发明申请

WO2005086391A1 SYSTEM, METHOD AND APPARATUS FOR POLARIZATION MODE DISPERSION COMPENSATION AND DEMULTIPLEXING POLARIZATION MULTIPLEXED SIGNALS 审中-公开
标题翻译：用于极化模式分散补偿和解复用偏振多重信号的系统，方法和装置
公开(公告)号：WO2005086391A1
公开(公告)日：2005-09-15
申请号：PCT/EP2005/051061
申请日：2005-03-09
申请人： MARCONI COMMUNICATIONS SPA , SECONDINI, Marco , FORESTIERI, Enrico , PRATI, Giancarlo , COLAVOLPE, Giulio
发明人： SECONDINI, Marco , FORESTIERI, Enrico , PRATI, Giancarlo , COLAVOLPE, Giulio
IPC分类号： H04B10/18
CPC分类号： H04B10/2569
摘要： A polarization multiplex transmission system (10) comprises two optical signals ( z 1 , z 2 ) transmitted over the same optical fibre (15) at the same wavelength but with orthogonal polarizations. The system is characterised by receiving apparatus (10) which is operable to filter the two components with orthogonal polarization of the signal received in accordance with an appropriate transfer matrix which is dynamically controlled on the basis of the output signals in such a manner as to approximate the reverse transfer matrix of the fibre in the region of the spectrum occupied by the signal so as to compensate for Polarization Mode Dispersion (PMD) and polarization rotation introduced by the fibre and eliminating distortion and mutual interference effects for both the signals and thereby obtain a demultiplexed output corresponding to the two transmitted signals.
摘要翻译：偏振复用传输系统（10）包括在同一光纤（15）上以相同波长但正交偏振传输的两个光信号（z1，z2）。该系统的特征在于接收装置（10），其可操作以根据根据输出信号动态地控制的适当传输矩阵对接收到的信号的正交极化滤波两个分量，以便近似在由信号占据的频谱区域中的光纤的反向传输矩阵，以补偿由光纤引入的偏振模色散（PMD）和偏振旋转，并消除两个信号的失真和相互干扰效应，从而获得对应于两个发射信号的解复用输出。

5. 发明申请

WO2004004134A1 DECODING OF CONCATENATED SELF-ORTHOGONAL CONVOLUTIONAL CODES ON GRAPHS 审中-公开
标题翻译：解码图形上的自定义自旋向量代码
公开(公告)号：WO2004004134A1
公开(公告)日：2004-01-08
申请号：PCT/EP2003/006337
申请日：2003-06-16
申请人： NUCODEX S.R.L. , COLAVOLPE, Giulio
发明人： COLAVOLPE, Giulio
IPC分类号： H03M13/29
CPC分类号： H03M13/2957 , H03M13/2927 , H03M13/2939
摘要： The invention concerns a coding scheme consisting of a serial, parallel or mixed concatenation of component convolutional codes having particular algebraic characteristics. These codes are nonrecursive and/or recursive. The nonrecursive codes are the so-called Convolutional Self-Orthogonal Codes (CSOC). In accordance with the present invention, message-passing algorithms are used for decoding such codes. A coder and a decoder employ respectively a coding scheme as mentioned above and a decoder based on message-passing algorithms operating on the graph of the underlying code.
摘要翻译：本发明涉及由具有特定代数特征的组件卷积码的串行，并行或混合级联组成的编码方案。这些代码是非递归的和/或递归的。非递归码是所谓的卷积自正交码（CSOC）。根据本发明，消息传递算法用于对这些代码进行解码。编码器和解码器分别采用如上所述的编码方案和基于在底层代码的图上操作的消息传递算法的解码器。

6. 发明申请

WO2003050984A1 METHOD BASED ON STOKES PARAMETERS FOR THE ADAPTIVE ADJUSTMENT OF PMD COMPENSATORS IN OPTICAL FIBER COMMUNICATION SYSTEMS AND COMPENSATOR IN ACCORDANCE WITH SAID METHOD 审中-公开
标题翻译：基于光纤光纤通信系统和补偿器的PMD补偿器自适应调整参数的方法
公开(公告)号：WO2003050984A1
公开(公告)日：2003-06-19
申请号：PCT/IB2002/005446
申请日：2002-11-29
申请人： MARCONI COMMUNICATIONS SPA , COLAVOLPE, Giulio , FORESTIERI, Enrico
发明人： COLAVOLPE, Giulio , FORESTIERI, Enrico
IPC分类号： H04B10/18
CPC分类号： G02B6/274 , G02B6/278 , G02B6/29395 , H04B10/2569
摘要： A method for the adaptive adjustment of a PMD compensator in optical fiber communication systems with the compensator comprising a cascade of adjustable optical devices through which passes an optical signal to be compensated and comprising the steps of computing the Stokes parameters S 0 , S 1 , S 2 , S 3 in a number Q of different frequencies of the signal output from the compensator, producing control signals for parameters of at least some of said adjustable optical devices so as to make virtually constant said Stokes parameters computed at different frequencies. A compensator comprising a cascade of adjustable optical devices (12-14) through which passes an optical signal to be compensated, an adjustment system which takes the components y 1 (t) e y 2 (t) on the two orthogonal polarizations from the signal at the compensator output, and which comprises a controller (15, 16) which on the basis of said components computes the Stokes parameters S 0 , S 1 , S 2 , S 3 in a number Q of different frequencies of the signal output by the compensator and which emits control signals for at least some of said adjustable optical devices so as to make virtually constant the Stokes parameters computed at the different frequencies.
摘要翻译：一种用于光纤通信系统中的PMD补偿器的自适应调整的方法，所述补偿器包括级联的可调节光学器件，通过所述可调节光学器件通过待补偿的光信号，并且包括以下步骤：计算斯托克斯参数S0，S1，S2，S3 在来自补偿器的信号输出的不同频率的数量Q中，产生用于所述可调节光学装置中的至少一些的参数的控制信号，从而使得以不同频率计算的所述斯托克斯参数几乎不变。一种补偿器，包括可调节的光学装置（12-14）的级联，通过该级联的可调节的光学装置（12-14）通过要被补偿的光学信号;调整系统，其从两个正交极化处的两个正交极化处取得分量y1（t）e y2（t）补偿器输出，并且其包括控制器（15,16），其基于所述组件计算由补偿器输出的信号的不同频率的数量Q中的斯托克斯参数S0，S1，S2，S3，并发出控制信号用于至少一些所述可调节的光学装置，使得在不同频率下计算的斯托克斯参数几乎不变。

7. 发明申请

WO2010149791A1 REDUCED COMPLEXITY FDM-CPM DECTECTOR WITH MULTIPLE ACCESS INTERFERENCE CANCELLATION 审中-公开
标题翻译：降低复杂度的FDM-CPM分解器具有多个访问干扰消除
公开(公告)号：WO2010149791A1
公开(公告)日：2010-12-29
申请号：PCT/EP2010/059144
申请日：2010-06-28
申请人： NEWTEC CY NV , COLAVOLPE, Giulio , PIEMONTESE, Amina
发明人： COLAVOLPE, Giulio , PIEMONTESE, Amina
IPC分类号： H04L25/03 , H04L27/20 , H04L1/00
CPC分类号： H04B1/7115 , H04B1/707 , H04B1/71072 , H04L1/0048 , H04L1/005 , H04L25/03178 , H04L25/03305 , H04L25/03331 , H04L27/2003
摘要： An FDM-CPM multi-user detector (30) jointly detects the received symbols for all users by determining from the received multi-user signal an a-posteriori probability mass function (pmf) of a time-sequence of states and transmitted symbols of all users, by iterative message passing corresponding to a specific factorisation of the pmf. The factorisation involves a combined variable representing possible transmitted symbols and CPM states of each user for each symbol time interval, so as to make the iterative process convergent. Non exponential complexity is enabled by disregarding multiple access interference (MAI) from at least some of the other users. Applications can include hubs for satellite communication ground stations.
摘要翻译： FDM-CPM多用户检测器（30）通过从接收到的多用户信号中确定状态的时间序列和所发送的符号的后验概率质量函数（pmf）来共同检测所有用户的接收符号用户，通过对应于pmf的特定因式分解的迭代消息传递。因子分解涉及每个符号时间间隔表示每个用户的可能的发送符号和CPM状态的组合变量，以便使迭代过程收敛。通过忽略来自至少一些其他用户的多址接入干扰（MAI）来实现非指数复杂性。应用可以包括卫星通信地面站的集线器。

8. 发明申请

WO2003050985A1 POLARISATION MODE DISPERSION COMPENSATOR USING A MEAN SQUARE ERROR TECHNIQUE 审中-公开
标题翻译：偏差模式分散补偿器使用均方误差技术
公开(公告)号：WO2003050985A1
公开(公告)日：2003-06-19
申请号：PCT/IB2002/005661
申请日：2002-12-03
申请人： MARCONI COMMUNICATIONS SPA , PRATI, Giancarlo , FORESTIERI, Enrico , COLAVOLPE, Giulio
发明人： PRATI, Giancarlo , FORESTIERI, Enrico , COLAVOLPE, Giulio
IPC分类号： H04B10/18
CPC分类号： H04B10/2569 , G02B6/2713 , G02B6/274 , G02B6/278 , G02B6/29395 , G02B6/4215
摘要： A method for the adaptive adjustment of a PMD compensator in optical fiber communication systems comprises the steps of taking the signal at the compensator output and extracting the components y 1 (t) and y 2 (t) on the two orthogonal polarizations, computing the signal y(t)=[y 1 (t)] 2 +[y 2 (t)] 2 , sampling the signal y(t) at instants t k =kT with T = symbol interval to obtain samples y(t k ), computing the mean square error e(k)=y(t k )-u(k) with u(k) equal to the symbol transmitted, and adjusting the parameters of the compensator to seek to minimize e(k). A PMD compensator in accordance with the method comprises an adjustment system which comprises in turn a photodetecor (17) which takes the components y 1 (t) and y 2 (t) on the two orthogonal polarizations from the signal at the compensator output, a sampler (19) which samples at instants t k =kT with T = symbol interval, the signal y(t)=[y 1 (t)] 2 +[y 2 (t)] 2 at the output of the photodetector (17) to obtain samples y(t k ), a circuit (18, 20) for computation of the mean square error e(k)=y(t k )-u(k) with u(k) equal to the symbol transmitted, and a regulator (15, 16) which regulates the parameters of the compensator to seek to minimize e(k).
摘要翻译：一种用于光纤通信系统中的PMD补偿器的自适应调整的方法包括以下步骤：在补偿器输出处获取信号并提取两个正交偏振上的分量y1（t）和y2（t），计算信号y（ t）= [y1（t）] 2+ [y2（t）] 2，在时刻tk = kT处用T =符号间隔采样信号y（t）以获得样本y（tk），计算均方误差e （k）= y（tk）-u（k），其中u（k）等于发送的符号，并且调整补偿器的参数以寻求最小化e（k）。根据该方法的PMD补偿器包括调整系统，该调整系统依次包括从补偿器输出端的信号获取两个正交偏振上的分量y1（t）和y2（t）的光电分配器（17），采样器在t = kT的时刻，T =符号间隔，在光电检测器（17）的输出处的信号y（t）= [y1（t）] 2+ [y2（t）] 2进行采样，以获得样本y （tk），用于计算平均误差e（k）= y（tk）-u（k）的电路（18,20），其中u（k）等于发送的符号，以及调节器（15,16 ），其调节补偿器的参数以寻求使e（k）最小化。

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