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1. 发明公开

EP2456097A1 WAVELENGTH DISPERSION AMOUNT CALCULATION DEVICE, OPTICAL SIGNAL RECEPTION DEVICE, OPTICAL SIGNAL TRANSMISSION DEVICE, AND WAVELENGTH DISPERSION AMOUNT CALCULATION METHOD 有权
标题翻译：装置：用于光信号的实用计算的波长色散量的转让和方法计算的波长色散量，接收装置中，DEVICE
公开(公告)号：EP2456097A1
公开(公告)日：2012-05-23
申请号：EP10799861.9
申请日：2010-07-14
申请人： Nippon Telegraph And Telephone Corporation
发明人： ISHIHARA Koichi , KOBAYASHI Takayuki , KUDO Riichi , TAKATORI Yasushi , MATSUI Munehiro , MIZOGUCHI Masato , NAKAGAWA Tadao , YAMAZAKI Etsushi , SANO Akihide , MIYAMOTO Yutaka , YOSHIDA Eiji , YAMANAKA Shogo
IPC分类号： H04B10/02 , H04B3/06 , H04B10/18
CPC分类号： H04B10/0775 , H04B3/06 , H04B10/25133
摘要： In order to compensate for chromatic dispersion caused by optical fiber transmission in a communication system with coherent detection using optical signals, specific frequency band signals are used to enable estimation of a chromatic dispersion value. The chromatic dispersion value calculating apparatus is provided with: a signal distributing circuit which distributes, into a plurality of signal sequences, an electrical digital signal converted from received optical signals of an optical signal transmitted by an optical signal transmitting apparatus, in which a known signal with concentrated frequency components of a plurality of specific frequencies is appended to a signal generated from a transmission data sequence; a plurality of frequency band pass filter circuits, each of which separating only each of a plurality of specific frequency components in which the known signal is included from each of the signal sequences distributed by the signal distributing circuit, and passing each of the specific frequency components therethrough; a plurality of power calculating circuits which are provided so as to correspond respectively to the plurality of frequency band pass filter circuits and which calculate power values of signals output from the corresponding frequency band pass filter circuits; a delay time calculating circuit which detects times at which power has the maximum value or times at which the power exceeds a predetermined threshold value, respectively from signal sequences of the power values output from the plurality of power calculating circuits, and which compares the detected times; and a chromatic dispersion value calculating circuit which calculates a chromatic dispersion value based on a comparison result of the times by the delay time calculating circuit.
摘要翻译：为了补偿色散光纤通过传输与使用的光信号相干检测的通信系统中引起的，特定频带信号被用于使色散值的估计。波长色散值计算装置设置有：信号分配电路用于分配成信号序列从由在光信号发送装置mitted的光信号的反式的接收的光信号转换电数字信号，多个在其中的已知信号与被附加到从发送数据序列而生成的信号的特定频率的多个频率分量集中; 频率的带通滤波器电路的复数，每个的其中仅分离每个在其中已知信号从由所述信号分配的信号序列包括分配电路特定频率分量的多个，并且每个传递的特定频率分量的那里通过; 的功率计算提供哪些电路，以便分别对应于频率带通滤波电路的多元性并且计算从相应的频率的带通滤波器电路的输出信号的功率值的多个; 其中在哪个功率检测时间的延迟时间计算电路具有最大值或倍其中功率从功率计算电路的所述多个输出的功率值的信号序列超过预定阈值，分别和其比较所检测到的次 ; 和色散值计算电路，其计算基于由所述延迟时间计算电路的时间的比较结果的色散值。

2. 发明公开

EP2456107A1 METHOD FOR RECEIVING FREQUENCY DOMAIN MULTIPLEXED SIGNAL AND DEVICE FOR RECEIVING FREQUENCY DOMAIN MULTIPLEXED SIGNAL 有权
标题翻译：用于接收频域复用的信号的方法和装置，用于接收频域复用信号
公开(公告)号：EP2456107A1
公开(公告)日：2012-05-23
申请号：EP10799887.4
申请日：2010-07-15
申请人： Nippon Telegraph and Telephone Corporation
发明人： KUDO Riichi , KOBAYASHI Takayuki , ISHIHARA Koichi , TAKATORI Yasushi , NOSAKA Hideyuki , MATSUI Munehiro , MIZOGUCHI Masato , NAKAGAWA Tadao , YAMAZAKI Etsushi , SANO Akihide , MIYAMOTO Yutaka , YOSHIDA Eiji
IPC分类号： H04J11/00
CPC分类号： H04L27/2672 , H04L25/03159 , H04L27/2633 , H04L27/265 , H04L27/266 , H04L2025/03414
摘要： A frequency domain multiplexed signal receiving method which decodes received signals that are multiplexed in a frequency domain, includes: a digital signal acquisition step of acquiring digital signals from the received signals that are multiplexed in the frequency domain; an offset discrete Fourier transform step of applying an offset discrete Fourier transform to odd discrete point numbers based on the acquired digital signals; and a decode step of decoding frequency domain digital signals in the frequency domain obtained by the offset discrete Fourier transform, and that are the frequency domain digital signals of one or more frequency channels.
摘要翻译：其解码所接收的信号并在频域复用的频域复用的信号接收方法，包括：从接收到的信号中获取数字信号的数字信号获取的步骤并在频域复用; 以抵消离散傅里叶变换施加于偏移离散傅立叶变换为离散基于所获取的数字信号奇点号码的步骤; 和解码的频域数字信号的在由偏移离散傅立叶获得的频域中的解码步骤变换，并做是一个或多个频率信道的频域数字信号。

3. 发明授权

EP2584720B1 FREQUENCY OFFSET ESTIMATION APPARATUS, RECEIVER APPARATUS, FREQUENCY OFFSET ESTIMATION METHOD, AND RECEPTION METHOD 有权
标题翻译：用于测量频率偏移，接收装置中，法测量频率偏移和接收方法
公开(公告)号：EP2584720B1
公开(公告)日：2015-03-11
申请号：EP11795834.8
申请日：2011-06-17
申请人： Nippon Telegraph And Telephone Corporation
发明人： NAKAGAWA Tadao , MATSUI Munehiro , ISHIHARA Koichi , KUDO Riichi , KOBAYASHI Takayuki , YAMAZAKI Etsushi , SANO Akihide , YOSHIDA Eiji , MIZOGUCHI Masato , MIYAMOTO Yutaka , TAKATORI Yasushi
IPC分类号： H04B17/00 , H04B10/00 , H04J11/00 , H04L27/14 , H04B7/10 , H04L27/00 , H04B10/61
CPC分类号： H04L27/14 , H04B7/10 , H04B10/611 , H04B10/6164 , H04B17/327 , H04L27/2659 , H04L2027/0026 , H04L2027/0032 , H04L2027/0046
摘要： Provided is a frequency offset estimation apparatus that appropriately estimates and compensates for a frequency offset of a received signal when estimating the frequency offset which is the difference between a carrier frequency of the received signal and the frequency of an output signal of a local oscillator. The frequency offset estimation apparatus converts the received signal sampled in advance with a predetermined sampling frequency into a frequency spectrum having N frequency components, limits a frequency band of negative frequency components from 1 to N /2 of the frequency spectrum and a frequency band of positive frequency components from N /2+1 to N of the frequency spectrum, calculates the sum of the squares of the positive frequency components of the frequency spectrum that have been subjected to frequency band limitation and the sum of the squares of the negative frequency components of the frequency spectrum that have been subjected to frequency band limitation to calculate power of the positive frequency components and power of the negative frequency components, and cyclically shifts all frequency components of the frequency spectrum in a frequency domain until the absolute value of a power difference between the power of the positive frequency components and the power of the negative frequency components is less than or equal to a predetermined threshold value, and estimates the frequency offset based on a shift amount until the absolute value is less than or equal to the threshold value.

4. 发明公开

EP2521293A1 TRANSMISSION METHOD, RECEPTION METHOD, TRANSMITTER APPARATUS, AND RECEIVER APPARATUS 有权
标题翻译： SENDEVERFAHREN，EMPFANGSVERFAHREN，SENDEVORRICHTUNG UND EMPFANGSVORRICHTUNG
公开(公告)号：EP2521293A1
公开(公告)日：2012-11-07
申请号：EP11739836.2
申请日：2011-02-03
申请人： Nippon Telegraph And Telephone Corporation
发明人： NAKAGAWA Tadao , YAMAZAKI Etsushi , ISHIHARA Koichi , KOBAYASHI Takayuki , KUDO Riichi , TAKATORI Yasushi , MATSUI Munehiro , MIYAMOTO Yutaka , SANO Akihide , YOSHIDA Eiji , MIZOGUCHI Masato
IPC分类号： H04J11/00 , G02F2/00 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/18 , H04J14/00 , H04J14/04 , H04J14/06
CPC分类号： H04B10/5053 , G02F1/0136 , H04B10/532 , H04B10/60 , H04J14/06
摘要： A polarization state of a transmission signal can be changed at a high speed based on a symbol-rate By switching a first switch, a second switch, and a third switch with time, one of an X-polarized wave_I-signal as a Y-polarized wave_I-signal, a signal caused by performing logical inversion for an X-polarized wave_I-signal, an X-polarized wave_Q-signal and a signal caused by logical inversion for an X-polarized wave_Q-singal is input to a second modulator. Further, by switching the first switch, the second switch and the third switch with time, the second modulator is input one of the X-polarized wave_I-singal as the Y-polarized wave_Q-signal, the X-polarized wave_I-signal, the signal caused by performing logical inversion for the X-polarized wave_I-signal, the X-polarized wave_Q-signal and the signal caused by performing logical inversion for the X-polarized wave_Q-signal. Thereby, a polarization state of a transmission signal can be changed at high speed based on a symbol-rate speed.
摘要翻译：传输信号的偏振状态可以基于符号速率以高速度改变。通过随时间切换第一开关，第二开关和第三开关，X极化波I_信号之一作为Y轴，通过对X偏振波I_信号进行逻辑反转而产生的信号，X偏振波Q信号以及由X偏振波Q_信号的逻辑反相引起的信号被输入到第二调制器。此外，通过随时间切换第一开关，第二开关和第三开关，第二调制器输入X偏振波I-单位之一作为Y偏振波Q_信号，X偏振波I信号，通过对X偏振波_I信号进行逻辑反转而产生的信号，X偏振波Q信号和由X偏振波Q_信号执行逻辑反相引起的信号。由此，可以基于符号速度速度高速地改变发送信号的偏振状态。

5. 发明授权

EP2521293B1 TRANSMISSION METHOD, RECEPTION METHOD, TRANSMITTER APPARATUS, AND RECEIVER APPARATUS 有权
标题翻译：传输方法，接收方法，传输装置，接收装置
公开(公告)号：EP2521293B1
公开(公告)日：2016-04-13
申请号：EP11739836.2
申请日：2011-02-03
申请人： Nippon Telegraph And Telephone Corporation
发明人： NAKAGAWA Tadao , YAMAZAKI Etsushi , ISHIHARA Koichi , KOBAYASHI Takayuki , KUDO Riichi , TAKATORI Yasushi , MATSUI Munehiro , MIYAMOTO Yutaka , SANO Akihide , YOSHIDA Eiji , MIZOGUCHI Masato
IPC分类号： G02F1/01 , H04J14/06 , H04J11/00 , H04B10/532 , H04B10/60 , H04B10/50
CPC分类号： H04B10/5053 , G02F1/0136 , H04B10/532 , H04B10/60 , H04J14/06

6. 发明授权

EP2456097B1 WAVELENGTH DISPERSION AMOUNT CALCULATION DEVICE, OPTICAL SIGNAL RECEPTION DEVICE, OPTICAL SIGNAL TRANSMISSION DEVICE, AND WAVELENGTH DISPERSION AMOUNT CALCULATION METHOD 有权
标题翻译：装置：用于光信号的实用计算的波长色散量的转让和方法计算的波长色散量，接收装置中，DEVICE
公开(公告)号：EP2456097B1
公开(公告)日：2014-08-06
申请号：EP10799861.9
申请日：2010-07-14
申请人： Nippon Telegraph And Telephone Corporation
发明人： ISHIHARA Koichi , KOBAYASHI Takayuki , KUDO Riichi , TAKATORI Yasushi , MATSUI Munehiro , MIZOGUCHI Masato , NAKAGAWA Tadao , YAMAZAKI Etsushi , SANO Akihide , MIYAMOTO Yutaka , YOSHIDA Eiji , YAMANAKA Shogo
IPC分类号： H04B10/50
CPC分类号： H04B10/0775 , H04B3/06 , H04B10/25133

7. 发明授权

EP2456107B1 Method for receiving frequency domain multiplexed signal and device for receiving frequency domain multiplexed signal 有权
标题翻译：用于接收频域复用的信号的方法和装置，用于接收频域复用信号
公开(公告)号：EP2456107B1
公开(公告)日：2014-02-26
申请号：EP10799887.4
申请日：2010-07-15
申请人： Nippon Telegraph and Telephone Corporation
发明人： KUDO Riichi , KOBAYASHI Takayuki , ISHIHARA Koichi , TAKATORI Yasushi , NOSAKA Hideyuki , MATSUI Munehiro , MIZOGUCHI Masato , NAKAGAWA Tadao , YAMAZAKI Etsushi , SANO Akihide , MIYAMOTO Yutaka , YOSHIDA Eiji
IPC分类号： H04L25/03 , H04L27/26
CPC分类号： H04L27/2672 , H04L25/03159 , H04L27/2633 , H04L27/265 , H04L27/266 , H04L2025/03414

8. 发明公开

EP2584720A1 FREQUENCY OFFSET ESTIMATION APPARATUS, RECEIVER APPARATUS, FREQUENCY OFFSET ESTIMATION METHOD, AND RECEPTION METHOD 有权
标题翻译：用于测量频率偏移，接收装置中，法测量频率偏移和接收方法
公开(公告)号：EP2584720A1
公开(公告)日：2013-04-24
申请号：EP11795834.8
申请日：2011-06-17
申请人： Nippon Telegraph And Telephone Corporation
发明人： NAKAGAWA Tadao , MATSUI Munehiro , ISHIHARA Koichi , KUDO Riichi , KOBAYASHI Takayuki , YAMAZAKI Etsushi , SANO Akihide , YOSHIDA Eiji , MIZOGUCHI Masato , MIYAMOTO Yutaka , TAKATORI Yasushi
IPC分类号： H04B17/00 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04J11/00
CPC分类号： H04L27/14 , H04B7/10 , H04B10/611 , H04B10/6164 , H04B17/327 , H04L27/2659 , H04L2027/0026 , H04L2027/0032 , H04L2027/0046
摘要： Provided is a frequency offset estimation apparatus that appropriately estimates and compensates for a frequency offset of a received signal when estimating the frequency offset which is the difference between a carrier frequency of the received signal and the frequency of an output signal of a local oscillator. The frequency offset estimation apparatus converts the received signal sampled in advance with a predetermined sampling frequency into a frequency spectrum having N frequency components, limits a frequency band of negative frequency components from 1 to N /2 of the frequency spectrum and a frequency band of positive frequency components from N /2+1 to N of the frequency spectrum, calculates the sum of the squares of the positive frequency components of the frequency spectrum that have been subjected to frequency band limitation and the sum of the squares of the negative frequency components of the frequency spectrum that have been subjected to frequency band limitation to calculate power of the positive frequency components and power of the negative frequency components, and cyclically shifts all frequency components of the frequency spectrum in a frequency domain until the absolute value of a power difference between the power of the positive frequency components and the power of the negative frequency components is less than or equal to a predetermined threshold value, and estimates the frequency offset based on a shift amount until the absolute value is less than or equal to the threshold value.
摘要翻译：本发明提供一种频率偏移估计装置没有适当地估计和补偿的频率的接收信号的偏移在估计频率偏移的所有它是接收信号的载波频率和本机振荡器的输出信号的频率之间的差。所述频率偏移估计装置预先与预定的采样频率到具有N个频率分量的频谱采样的接收的信号转换，从1至N / 2的频谱的和的正的频带限制负频率分量的频带从N个频率分量/ 2 + 1到频谱的N，计算的频谱的正频率分量的平方的总和thathave进行了频率带限制和负频率分量的平方之和频谱thathave进行了频率带宽限制来计算正频率分量的功率与负频率成分的功率，以及循环移位在频域中的频谱的所有频率成分，直到之间的功率差的绝对值正频率分量的功率和的功率负频率分量小于或等于预定的阈值，并估计频率偏移基于偏移量，直到绝对值小于或等于所述阈值。

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