公开(公告)号：US08687968B2

公开(公告)日：2014-04-01

申请号：US13059226

申请日：2009-08-12

申请人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

发明人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

IPC分类号： H04B10/00

CPC分类号： H03H11/20 ,  H03H2007/0192 ,  H03H2011/0494 ,  H04B10/505 ,  H04B2210/517

摘要： A vector sum phase shifter includes a 90° phase shifter (1) which generates an in-phase signal (VINI) and a quadrature signal (VINQ) from an input signal (VIN), a four-quadrant multiplier (2I) which changes the amplitude of the in-phase signal (VINI) based on a control signal (CI), a four-quadrant multiplier (2Q) which changes the amplitude of the quadrature signal (VINQ) based on a control signal (CQ), a combiner (3) which combines the in-phase signal (VINI) and the quadrature signal (VINQ), and a control circuit (4). The control circuit (4) includes a voltage generator which generates a reference voltage, and a differential amplifier which outputs the difference signal between a control voltage (VC) and the reference voltage as the control signal (CI, CQ). The differential amplifier performs an analog operation of converting the control voltage (VC) into the control signal (CI, CQ) similar to a sine wave or a cosine wave.

摘要翻译： 矢量和移相器包括从输入信号（VIN）产生同相信号（VINI）和正交信号（VINQ）的90°移相器（1），四象限乘法器（2I），其改变 基于控制信号（CI）的同相信号（VINI）的幅度，基于控制信号（CQ）改变正交信号（VINQ）的幅度的四象限乘法器（2Q），组合器 3），其组合了同相信号（VINI）和正交信号（VINQ），以及控制电路（4）。 控制电路（4）包括产生参考电压的电压发生器和输出控制电压（VC）和基准电压之间的差分信号作为控制信号（CI，CQ）的差分放大器。 差分放大器进行与正弦波或余弦波相似的将控制电压（VC）转换为控制信号（CI，CQ）的模拟操作。

公开(公告)号：US20110273317A1

公开(公告)日：2011-11-10

申请号：US13145782

申请日：2010-01-28

申请人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

发明人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

IPC分类号： H03M1/66 ,  H03K17/60 ,  H03K17/687

CPC分类号： H03M1/662 ,  H03M1/742

摘要： Two D flip-flops (D-FFMA, D-FFMB) output two half-rate signals (DMR-A, DMR-B) by dividing a digital input signal (DM) into two signals and retiming them based on a clock signal (CLK) and a negative-phase clock signal (CLKB). First and second switches (SM1, SM2) are driven by the two half-rate signals (DMR-A, DMR-B). Third and fourth switches (SM3, SM4) are driven by a select signal SW and a negative-phase select signal SWB that have the same frequency as that of the clock signal TO (CLK) but a different phase from that of the clock signal (CLK). The current supplied from a current source (1) to a load (4) thus becomes a current signal corresponding to a conversion frequency twice the frequency of the clock signal (CLK).

摘要翻译： 两个D触发器（D-FFMA，D-FFMB）通过将数字输入信号（DM）分成两个信号并基于时钟信号重新定时（DMR-A，D-FFMB）输出两个半速率信号 CLK）和负相位时钟信号（CLKB）。 第一和第二开关（SM1，SM2）由两个半速率信号（DMR-A，DMR-B）驱动。 第三和第四开关（SM3，SM4）由与时钟信号TO（CLK）的频率相同的频率的选择信号SW和负相位选择信号SWB驱动，但是与时钟信号 CLK）。 因此，从电流源（1）提供给负载（4）的电流成为与时钟信号（CLK）的频率的两倍的转换频率相对应的电流信号。

公开(公告)号：US08929750B2

公开(公告)日：2015-01-06

申请号：US13318757

申请日：2010-05-18

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

IPC分类号： H04B10/06 ,  H04B10/2513 ,  H04B10/079 ,  H04B10/556 ,  H04B10/61 ,  H04L7/027

CPC分类号： H04B10/50 ,  H04B10/07951 ,  H04B10/2513 ,  H04B10/556 ,  H04B10/616 ,  H04B10/6161 ,  H04L7/027

摘要： To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies.

摘要翻译： 为了使基于使用光信号的相干检测的通信系统中的信号位置检测，频率偏移补偿，时钟偏移补偿和色散量估计，即使在到达时间上具有很大偏移的信号，这取决于由于 色散。 光信号发送装置产生具有集中在两个或更多个特定频率上的功率的特定频带信号，并发送包括特定频带信号的信号。 光信号接收装置将接收到的信号转换为数字信号，检测来自转换的数字信号的特定频带信号的位置，估计检测到的特定频带信号的频率位置，并检测光信号接收装置 和光信号发送装置。 此外，光信号接收装置从特定频带信号的估计频率位置之间的间隔检测光信号接收装置和光信号发送装置之间的时钟偏移。 此外，光信号接收装置估计检测到的特定频带信号的时间位置，并且根据与不同频率对应的特定频带信号的时间位置之间的差来检测色散量。

公开(公告)号：US08787769B2

公开(公告)日：2014-07-22

申请号：US13380432

申请日：2010-07-14

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

IPC分类号： H04B10/00 ,  H04B10/06

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： 为了补偿在使用光信号的相干检测的通信系统中由光纤传输引起的色散，使用特定的频带信号来使得能够估计色散值。 色散值计算装置具有：信号分配电路，其将由光信号发送装置发送的光信号的接收光信号转换成的数字信号分配成多个信号序列，其中已知信号 将多个特定频率的集中频率分量附加到从发送数据序列生成的信号上; 多个频带滤波器电路，每个频带通滤波器电路仅分离由信号分配电路分配的每个信号序列中包含已知信号的多个特定频率分量中的每一个，并且使每个特定频率分量 通过 多个功率计算电路，被设置为分别对应于所述多个频带滤波器电路，并且计算从相应的频带滤波器电路输出的信号的功率值; 延迟时间计算电路，分别从多个功率计算电路输出的功率值的信号序列中分别检测功率达到功率超过预定阈值的最大值或多次的时间，并且将延迟时间计算电路 ; 以及色散值计算电路，其基于延迟时间计算电路的时间的比较结果来计算色散值。

公开(公告)号：US20120070159A1

公开(公告)日：2012-03-22

申请号：US13318757

申请日：2010-05-18

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

IPC分类号： H04B10/04 ,  H04J14/02 ,  H04B10/06 ,  H04B1/69

CPC分类号： H04B10/50 ,  H04B10/07951 ,  H04B10/2513 ,  H04B10/556 ,  H04B10/616 ,  H04B10/6161 ,  H04L7/027

摘要： To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies.

摘要翻译： 为了使基于使用光信号的相干检测的通信系统中的信号位置检测，频率偏移补偿，时钟偏移补偿和色散量估计，即使在到达时间上具有很大偏移的信号，这取决于由于 色散。 光信号发送装置产生具有集中在两个或更多个特定频率上的功率的特定频带信号，并发送包括特定频带信号的信号。 光信号接收装置将接收到的信号转换为数字信号，检测来自转换的数字信号的特定频带信号的位置，估计检测到的特定频带信号的频率位置，并检测光信号接收装置 和光信号发送装置。 此外，光信号接收装置从特定频带信号的估计频率位置之间的间隔检测光信号接收装置和光信号发送装置之间的时钟偏移。 此外，光信号接收装置估计检测到的特定频带信号的时间位置，并且根据与不同频率对应的特定频带信号的时间位置之间的差来检测色散量。

公开(公告)号：US20110150495A1

公开(公告)日：2011-06-23

申请号：US13059226

申请日：2009-08-12

申请人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Oncodera ,  Takatomo Enoki

发明人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Oncodera ,  Takatomo Enoki

IPC分类号： H04B10/00 ,  H03H17/08

CPC分类号： H03H11/20 ,  H03H2007/0192 ,  H03H2011/0494 ,  H04B10/505 ,  H04B2210/517

摘要： A vector sum phase shifter includes a 90° phase shifter (1) which generates an in-phase signal (VINI) and a quadrature signal (VINQ) from an input signal (VIN), a four-quadrant multiplier (2I) which changes the amplitude of the in-phase signal (VINI) based on a control signal (CI), a four-quadrant multiplier (2Q) which changes the amplitude of the quadrature signal (VINQ) based on a control signal (CQ), a combiner (3) which combines the in-phase signal (VINI) and the quadrature signal (VINQ), and a control circuit (4). The control circuit (4) includes a voltage generator which generates a reference voltage, and a differential amplifier which outputs the difference signal between a control voltage (VC) and the reference voltage as the control signal (CI, CQ). The differential amplifier performs an analog operation of converting the control voltage (VC) into the control signal (CI, CQ) similar to a sine wave or a cosine wave.

摘要翻译： 矢量和移相器包括从输入信号（VIN）产生同相信号（VINI）和正交信号（VINQ）的90°移相器（1），四象限乘法器（2I），其改变 基于控制信号（CI）的同相信号（VINI）的幅度，基于控制信号（CQ）改变正交信号（VINQ）的幅度的四象限乘法器（2Q），组合器 3），其组合了同相信号（VINI）和正交信号（VINQ），以及控制电路（4）。 控制电路（4）包括产生参考电压的电压发生器和输出控制电压（VC）和基准电压之间的差分信号作为控制信号（CI，CQ）的差分放大器。 差分放大器进行与正弦波或余弦波相似的将控制电压（VC）转换为控制信号（CI，CQ）的模拟操作。

公开(公告)号：US08493257B2

公开(公告)日：2013-07-23

申请号：US13145782

申请日：2010-01-28

申请人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

发明人： Munehiko Nagatani ,  Hideyuki Nosaka ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata

IPC分类号： H03M1/66

CPC分类号： H03M1/662 ,  H03M1/742

摘要： Two D flip-flops (D-FFMA, D-FFMB) output two half-rate signals (DMR-A, DMR-B) by dividing a digital input signal (DM) into two signals and retiming them based on a clock signal (CLK) and a negative-phase clock signal (CLKB). First and second switches (SM1, SM2) are driven by the two half-rate signals (DMR-A, DMR-B). Third and fourth switches (SM3, SM4) are driven by a select signal SW and a negative-phase select signal SWB that have the same frequency as that of the clock signal (CLK) but a different phase from that of the clock signal (CLK). The current supplied from a current source (1) to a load (4) thus becomes a current signal corresponding to a conversion frequency twice the frequency of the clock signal (CLK).

摘要翻译： 两个D触发器（D-FFMA，D-FFMB）通过将数字输入信号（DM）分成两个信号并基于时钟信号重新定时（DMR-A，D-FFMB）输出两个半速率信号 CLK）和负相位时钟信号（CLKB）。 第一和第二开关（SM1，SM2）由两个半速率信号（DMR-A，DMR-B）驱动。 第三和第四开关（SM3，SM4）由与时钟信号（CLK）频率相同的频率的选择信号SW和负相位选择信号SWB驱动，但与时钟信号（CLK ）。 因此，从电流源（1）提供给负载（4）的电流成为与时钟信号（CLK）的频率的两倍的转换频率相对应的电流信号。

公开(公告)号：US20120099864A1

公开(公告)日：2012-04-26

申请号：US13380432

申请日：2010-07-14

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

IPC分类号： H04J14/06 ,  H04B10/00

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： 为了补偿在使用光信号的相干检测的通信系统中由光纤传输引起的色散，使用特定的频带信号来使得能够估计色散值。 色散值计算装置具有：信号分配电路，其将由光信号发送装置发送的光信号的接收光信号转换成的数字信号分配成多个信号序列，其中已知信号 将多个特定频率的集中频率分量附加到从发送数据序列生成的信号上; 多个频带滤波器电路，每个频带通滤波器电路仅分离由信号分配电路分配的每个信号序列中包含已知信号的多个特定频率分量中的每一个，并且使每个特定频率分量 通过 多个功率计算电路，被设置为分别对应于所述多个频带滤波器电路，并且计算从相应的频带滤波器电路输出的信号的功率值; 延迟时间计算电路，分别从多个功率计算电路输出的功率值的信号序列中分别检测功率达到功率超过预定阈值的最大值或多次的时间，并且将延迟时间计算电路 ; 以及色散值计算电路，其基于延迟时间计算电路的时间的比较结果来计算色散值。

公开(公告)号：US08687973B2

公开(公告)日：2014-04-01

申请号：US13132308

申请日：2009-08-12

申请人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

发明人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

IPC分类号： H04B10/00

CPC分类号： H03H11/20 ,  H03F3/45085 ,  H03F3/45475 ,  H03F2200/336 ,  H03F2200/408 ,  H03F2203/45138 ,  H03F2203/45352 ,  H03F2203/45498 ,  H03F2203/45702

摘要： A voltage generator (400) includes a resistor ladder including resistors (4000-4008) which divide a supplied voltage to generate a plurality of reference voltages, a resistor (4009) provided between a power supply voltage (VCC) and one terminal of the resistor ladder, and a resistor (4010) provided between a power supply voltage (VEE) and the other terminal of the resistor ladder.

摘要翻译： 电压发生器（400）包括电阻梯（包括分压所提供的电压以产生多个参考电压的电阻器），电阻器（4009），设置在电源电压（VCC）和电阻器的一个端子之间 梯形电阻器和设置在电源电压（VEE）和电阻梯的另一端子之间的电阻器（4010）。

公开(公告)号：US20110236027A1

公开(公告)日：2011-09-29

申请号：US13132308

申请日：2009-08-12

申请人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

发明人： Hideyuki Nosaka ,  Munehiko Nagatani ,  Shogo Yamanaka ,  Kimikazu Sano ,  Koichi Murata ,  Kiyomitsu Onodera ,  Takatomo Enoki

IPC分类号： H04B10/00 ,  G05F3/18 ,  H03H11/16

CPC分类号： H03H11/20 ,  H03F3/45085 ,  H03F3/45475 ,  H03F2200/336 ,  H03F2200/408 ,  H03F2203/45138 ,  H03F2203/45352 ,  H03F2203/45498 ,  H03F2203/45702

摘要： A voltage generator (400) includes a resistor ladder including resistors (4000-4008) which divide a supplied voltage to generate a plurality of reference voltages, a resistor (4009) provided between a power supply voltage (VCC) and one terminal of the resistor ladder, and a resistor (4010) provided between a power supply voltage (VEE) and the other terminal of the resistor ladder.

摘要翻译： 电压发生器（400）包括电阻梯（包括分压所提供的电压以产生多个参考电压的电阻器），电阻器（4009），设置在电源电压（VCC）和电阻器的一个端子之间 梯形电阻器和设置在电源电压（VEE）和电阻梯的另一端子之间的电阻器（4010）。