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1.发明公开Orthogonal frequency division multiplexing method with differential phase shift compensation 审中-公开正交频分复用多路复用器（Phasenverschiebungsdifferenzausgleich）
公开(公告)号：EP2613460A1
公开(公告)日：2013-07-10
申请号：EP12197530.4
申请日：2012-12-17
IPC分类号： H04B10/2569 , H04B10/69 , H04B10/548
CPC分类号： H04B10/548 , H04B10/614 , H04B10/6165 , H04B2210/075
摘要： Two RF-pilots are inserted in a guard space of an OFDM POLMUX signal. The optical carriers of the RF-pilots are separated by a frequency difference of about 100 MHz or de-correlated. At the receiver, two phase correction signals are derived from the RF-pilots and the phase noise of the orthogonal OFDM signals are corrected separately.
摘要翻译： 两个RF导频插入在OFDM POLMUX信号的保护空间中。 RF导频的光载波被分离大约100MHz的频率差或去相关。 在接收机处，从RF导频导出两个相位校正信号，并且分别校正正交OFDM信号的相位噪声。
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公开(公告)号：EP2458751A1
公开(公告)日：2012-05-30
申请号：EP10192953.7
申请日：2010-11-29
申请人： Nokia Siemens Networks Oy , Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
CPC分类号： H04J14/06 , H04B10/2543 , H04B10/2569 , H04B10/2916 , H04B10/532 , H04J14/02
摘要： A method for an optical communication system and an optical communication system comprising a pump source configured to generate a pump signal having rotating polarization, a polarization sensitive receiver for receiving the optical signal having a polarization tracking cut-off frequency, wherein the polarization of the pump signal is configured to rotate at a predetermined frequency of polarization rotation and the frequency of polarization rotation of the pump signal is higher than the polarization tracking cut-off frequency of the receiver. Suitable for mitigation of cross-polarization modulation (XpolM) related effects in coherent polarization multiplexed quadrature phase shift keying (CP-QPSK) systems.
摘要翻译： 一种用于光通信系统和光通信系统的方法，包括被配置为产生具有旋转极化的泵浦信号的泵浦源，用于接收具有偏振跟踪截止频率的光信号的偏振敏感接收器，其中泵的极化 信号被配置为以预定的偏振旋转频率旋转，并且泵浦信号的偏振旋转频率高于接收器的偏振跟踪截止频率。 适用于缓解相干偏振复用正交相移键控（CP-QPSK）系统中的交叉极化调制（XpolM）相关效应。
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3.发明公开
公开(公告)号：EP2416512A1
公开(公告)日：2012-02-08
申请号：EP10171861.7
申请日：2010-08-04
IPC分类号： H04J14/02 , H04B10/155
CPC分类号： H04J14/02 , H04B10/07955 , H04B10/548 , H04B10/572 , H04L5/0007 , H04L5/0066 , H04L27/2626
摘要： A method and an apparatus for an optical communication system are provided, the method comprising the steps of generating a first optical signal and a second optical signal, multiplexing the first optical signal in a first optical channel and a second optical signal in a second optical channel, the first and the second optical channels being spectrally separated neighboring channels, measuring the level of out-of-band optical power associated with the second optical channel and frequency shifting the second optical channel when a frequency drift of the first optical channel occurs, so that the level of out-of-band optical power associated with the second optical channel is held constant.
摘要翻译： 提供了一种用于光通信系统的方法和装置，所述方法包括以下步骤：产生第一光信号和第二光信号，将第一光信道中的第一光信号和第二光信道中的第二光信号复用 第一和第二光通道是频谱分离的相邻通道，测量与第二光通道相关联的带外光功率的电平，并且当第一光通道的频率漂移发生时频移第二光通道，因此 与第二光通道相关联的带外光功率的水平保持恒定。
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4.发明公开Method and arrangement for transmitting an orthogonal frequency diversity multiplex signal via at least one optical filter 审中-公开用于发送的正交频率分集复用的方法和装置的信号通过至少一个光学滤波器
公开(公告)号：EP2355432A1
公开(公告)日：2011-08-10
申请号：EP10152797.6
申请日：2010-02-05
CPC分类号： H04L27/2626 , H04J14/06 , H04L25/03828 , H04L25/08 , H04L27/2647 , H04L27/2697
摘要： The invention describes method and an arrangement for transmitting an orthogonal frequency diversity multiplex signal via an optical filter.
OFDM channels (CG1,CGq) located near an edge of an OFDM spectrum are copied and shifted to an opposite edge of the OFDM spectrum (CCq,CC1) and transmitted via the optical filter.
At the receiver symbols are derived from original (CG1,CGq) and the copied OFDM channels (CCq,CC1). Then the symbols having a better signal quality are elected for further processing.摘要翻译： 本发明描述了用于在经由光学滤波器的分集发送到正交频分复用信号的方法和装置。 靠近的OFDM频谱的边缘OFDM信道（CG1，CGQ）被复制，并在OFDM频谱的相对边缘（CCQ，CC1）转移到和反式经由光学滤波器mitted。 在接收器符号从原始（CG1，CGQ）和复制的OFDM信道（CCQ，CC1）衍生的。 然后具有更好的信号质量的符号被选出用于进一步处理。
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