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    • 2. 发明授权
    • Optical division multiplexing transmission and reception method and optical division multiplexing transmission and reception device
    • 光分复用传输和接收方式以及光分复用传输和接收设备
    • US07620324B2
    • 2009-11-17
    • US11361357
    • 2006-02-24
    • Naoki MinatoTakeshi Kamijoh
    • Naoki MinatoTakeshi Kamijoh
    • H04B10/00
    • H04J14/005H04J14/02
    • An object of the present invention is to implement optical multiplexing transmission and reception in which an OCDM channel is added without changing the used wavelength bandwidth of the existing WDM channel or without changing the time slot allocated to the existing OTDM channel. Hence, one of the embodiments of the present invention is constituted as follows. The OCDM signal generation section generates an encoded optical pulse signal by encoding an optical pulse signal. The encoded optical pulse signal is inputted to the wavelength disperser and the time waveform of the encoded optical pulse signal is shaped to be outputted as a shaped and encoded optical pulse signal. The WDM signal generation section generates an optical wavelength division multiplexing signal. The OCDM signal extraction section decodes the OCDM reception signal by using the same code as the time-spreading/wavelength-hopping code for each channel and generates a decoded OCDM reception signal. The shaped and encoded optical pulse signal component that is contained in the decoded OCDM reception signal is restored by the inverse-wavelength disperser and a reproduced optical pulse signal is generated. Only the autocorrelation waveform component of the optical pulse signal constituting the OCDM transmission signal is extracted from the reproduced optical pulse signal by the first threshold value judgment section. In the WDM signal extraction section, the second threshold value judgment section extracts the WDM signal of each channel from the WDM reception signal.
    • 本发明的目的是实现其中添加OCDM信道而不改变现有WDM信道的所使用的波长带宽或不改变分配给现有OTDM信道的时隙的光复用发送和接收。 因此,本发明的实施例之一构成如下。 OCDM信号生成部通过对光脉冲信号进行编码来生成编码的光脉冲信号。 编码的光脉冲信号被输入到波长分散器,并且编码的光脉冲信号的时间波形被成形为被输出为成形和编码的光脉冲信号。 WDM信号生成部生成光波分复用信号。 OCDM信号提取部通过使用与每个通道的时间扩展/波长跳跃码相同的代码对OCDM接收信号进行解码,并生成解码的OCDM接收信号。 解码的OCDM接收信号中包含的成形和编码的光脉冲信号分量由反波长分散器恢复,并且产生再现的光脉冲信号。 仅由第一阈值判断部从再现的光脉冲信号中提取构成OCDM发送信号的光脉冲信号的自相关波形分量。 在WDM信号提取部中,第二阈值判定部从WDM接收信号中提取各信道的WDM信号。
    • 3. 发明申请
    • Device and method for selecting codes
    • 用于选择代码的设备和方法
    • US20050226187A1
    • 2005-10-13
    • US10815981
    • 2004-04-02
    • Naoki Minato
    • Naoki Minato
    • H04B7/216H04J13/00
    • H04J13/00H04J13/16
    • According to the present invention, a code selection device wherein, an unused spreading code, or one of a plurality of unused spreading codes, is selected for allocation to a new communication channel, comprises: a dummy spreading signal generator for despreading dummy original data by using the unused spreading code or codes available for employment, and generating dummy spreading signals; a superimposing unit for superimposing the dummy spreading signals and received signals and forming pseudo superimposed signals; a despreading unit for despreading the pseudo superimposed signals by using the unused spreading codes related to the corresponding pseudo superimposed signals, and the spreading codes already used for communication channels that previously have been established; and a spreading code selector for selecting an unused spreading code based on data for the communication channels reproduced for the pseudo superimposed signals and the reproduced dummy original data. With this configuration, a method can be provided whereby, in accordance with the usage condition of a network, a code sequence having a preferable correlation property can be selected, from among a number of code sequences that are generated, and allocated to a communication channel.
    • 根据本发明,选择未使用的扩展码或多个未使用的扩展码之一的码选择装置,用于分配给新的通信信道,包括:虚拟扩展信号发生器,用于解密虚拟原始数据, 使用未使用的扩展码或可用于使用的代码,并产生虚拟扩展信号; 叠加单元,用于叠加虚拟扩展信号和接收信号并形成伪叠加信号; 解扩单元,用于通过使用与相应的伪叠加信号相关的未使用的扩展码来解扩复叠信号,以及已经用于先前建立的通信信道的扩展码; 以及扩展码选择器,用于基于针对伪叠加信号和再现的虚拟原始数据再现的通信信道的数据来选择未使用的扩展码。 利用这种配置,可以提供一种方法,根据网络的使用条件,可以从生成并分配给通信信道的多个代码序列中选择具有优选的相关性的代码序列 。
    • 4. 发明申请
    • Optical code division multiplexing communication system and method for correcting failure of the same
    • 光码分复用通信系统及其校正故障的方法
    • US20110076008A1
    • 2011-03-31
    • US12801200
    • 2010-05-27
    • Naoki Minato
    • Naoki Minato
    • H04J14/00
    • H04J14/005
    • An OCDM communication system and a method for correcting failure of the same are provided. In the system, encoders and decoders are provided respectively for channels. Each encoder, including an SSFBG, encodes an optical signal using a code value determined according to distance between adjacent unit fiber Bragg gratings in the SFFBG. Each decoder, including an SFFBG, generates a received optical signal by decoding the encoded signal using a code value determined in the same manner. A set temperature of each encoder and decoder is calculated and a corresponding control signal is generated based on average power and error rate detection signals of each received optical signal. The temperature of each encoder or decoder is individually adjusted according to the control signal, which makes equal the code values of an encoder and decoder of a channel in which average power of a received signal has changed or error rate thereof is excessive.
    • 提供了OCDM通信系统和用于校正故障的方法。 在系统中,编码器和解码器分别为通道提供。 包括SSFBG的每个编码器使用根据SFFBG中的相邻单位光纤布拉格光栅之间的距离确定的编码值对光信号进行编码。 包括SFFBG的每个解码器通过使用以相同方式确定的代码值对编码信号进行解码来产生接收到的光信号。 计算每个编码器和解码器的设定温度,并且基于每个接收的光信号的平均功率和误码率检测信号产生相应的控制信号。 每个编码器或解码器的温度根据控制信号单独调整,这使得接收信号的平均功率已经改变或错误率过大的信道的编码器和解码器的代码值相等。
    • 5. 发明授权
    • Optical code division multiplexing transmission and reception method and optical code division multiplexing transceiver
    • 光码分复用收发方法和光码分复用收发器
    • US07680415B2
    • 2010-03-16
    • US12355312
    • 2009-01-16
    • Naoki MinatoAkihiko NishikiHideyuki IwamuraTakashi Ushikubo
    • Naoki MinatoAkihiko NishikiHideyuki IwamuraTakashi Ushikubo
    • H04J4/00H04J14/08
    • H04J14/005H04J14/02
    • An object of the present invention is to provide an OCDM transceiver with which the reduction amount of the intensity of the correlation waveform signal is smaller than that of a conventional device of the same type in the decoding step that comprises a time gate processing step. Hence, in the OCDM transceiver of the present invention that comprises an encoding portion and a decoding portion, the decoding portion is constituted comprising a decoder, clock extractor, and time gate. The decoder decodes an encoded optical pulse signal and separates the encoded optical pulse signal into a clock signal extraction signal and an optical pulse signal playback signal. The clock extractor extracts a clock signal from the clock signal extraction signal. Further, the time gate removes only the auto-correlation waveform component from the optical pulse signal playback signal. The auto-correlation waveform component is converted to an electrical signal by means of an optical receiver and generated as a reception signal.
    • 本发明的目的是提供一种OCDM收发器,在包括时间门处理步骤的解码步骤中,相关波形信号的强度的减少量比相同类型的常规装置的减少量小。 因此,在包括编码部分和解码部分的本发明的OCDM收发器中,解码部分包括解码器,时钟提取器和时间门。 解码器解码编码的光脉冲信号,并将编码的光脉冲信号分离成时钟信号提取信号和光脉冲信号重放信号。 时钟提取器从时钟信号提取信号中提取时钟信号。 此外,时间栅极仅从光脉冲信号重放信号中去除自相关波形分量。 自相关波形分量通过光接收机转换为电信号,并作为接收信号产生。
    • 6. 发明授权
    • Optical modulating circuit and optical modulating method
    • 光调制电路和光调制方法
    • US07660536B2
    • 2010-02-09
    • US11636653
    • 2006-12-11
    • Naoki Minato
    • Naoki Minato
    • H04B10/12
    • H04J14/08H04J14/02
    • An optical modulating circuit realizing a PPM is constituted by circuit parts having a frequency band equal to a data rate to provide a technique which increase the data rate. A first light source generates a first single wavelength signal serving as a continuous light having a first wavelength λ1 as a wavelength of a carrier wave. A second light source generates a second single wavelength signal serving as a continuous light having a second wavelength λ2 different from λ1 as a wavelength of a carrier wave. For the first single wavelength signal and the second single wavelength signal, according to a transmission electric signal having information 0 or 1, an optical switch outputs a first single wavelength signal as an input optical signal when the information is 0. On the other hand, when the information is 1, the optical switch outputs the second single wavelength signal as an input optical signal. An optical modulator generates an optical pulse signal obtained by arranging optical pulses having λ1 or λ2 as a wavelength of a carrier wave at predetermined time intervals from the input optical signal. A delaying unit delays the optical pulse having the wavelength λ1 and the optical pulse having the wavelength λ2 by different delay time Δt to obtain a PPM signal.
    • 实现PPM的光调制电路由具有等于数据速率的频带的电路部分构成,以提供增加数据速率的技术。 第一光源产生用作具有作为载波波长的第一波长λ1的连续光的第一单波长信号。 第二光源产生用作具有与λ1不同的第二波长λ2作为载波波长的连续光的第二单波长信号。 对于第一单波长信号和第二单波长信号,根据具有信息0或1的传输电信号,当信息为0时,光开关输出第一单波长信号作为输入光信号。另一方面, 当信息为1时,光开关输出第二单波长信号作为输入光信号。 光调制器通过从输入的光信号以预定的时间间隔布置具有λ1或λ2的波长的波长而获得的光脉冲信号。 延迟单元将具有波长λ1的光脉冲和具有波长λ2的光脉冲延迟不同的延迟时间Deltat以获得PPM信号。
    • 7. 发明申请
    • OPTICAL CODE DIVISION MULTIPLEXING TRANSMISSION AND RECEPTION METHOD AND OPTICAL CODE DIVISION MULTIPLEXING TRANSCEIVER
    • 光学代码段多路复用传输和接收方法和光学代码段多路复用收发器
    • US20090190927A1
    • 2009-07-30
    • US12355312
    • 2009-01-16
    • NAOKI MINATOAkihiko Nishiki
    • NAOKI MINATOAkihiko Nishiki
    • H04J14/00
    • H04J14/005H04J14/02
    • An object of the present invention is to provide an OCDM transceiver with which the reduction amount of the intensity of the correlation waveform signal is smaller than that of a conventional device of the same type in the decoding step that comprises a time gate processing step. Hence, in the OCDM transceiver of the present invention that comprises an encoding portion and a decoding portion, the decoding portion is constituted comprising a decoder, clock extractor, and time gate. The decoder decodes an encoded optical pulse signal and separates the encoded optical pulse signal into a clock signal extraction signal and an optical pulse signal playback signal. The clock extractor extracts a clock signal from the clock signal extraction signal. Further, the time gate removes only the auto-correlation waveform component from the optical pulse signal playback signal. The auto-correlation waveform component is converted to an electrical signal by means of an optical receiver and generated as a reception signal.
    • 本发明的目的是提供一种OCDM收发器,在包括时间门处理步骤的解码步骤中,相关波形信号的强度的减少量比相同类型的常规装置的减少量小。 因此,在包括编码部分和解码部分的本发明的OCDM收发器中,解码部分包括解码器,时钟提取器和时间门。 解码器解码编码的光脉冲信号,并将编码的光脉冲信号分离成时钟信号提取信号和光脉冲信号重放信号。 时钟提取器从时钟信号提取信号中提取时钟信号。 此外,时间栅极仅从光脉冲信号重放信号中去除自相关波形分量。 自相关波形分量通过光接收机转换为电信号,并作为接收信号产生。
    • 8. 发明授权
    • Device and method for selecting codes
    • 用于选择代码的设备和方法
    • US07242976B2
    • 2007-07-10
    • US10815981
    • 2004-04-02
    • Naoki Minato
    • Naoki Minato
    • H04B7/00H04Q7/20
    • H04J13/00H04J13/16
    • According to the present invention, a code selection device wherein, an unused spreading code, or one of a plurality of unused spreading codes, is selected for allocation to a new communication channel, comprises: a dummy spreading signal generator for despreading dummy original data by using the unused spreading code or codes available for employment, and generating dummy spreading signals; a superimposing unit for superimposing the dummy spreading signals and received signals and forming pseudo superimposed signals; a despreading unit for despreading the pseudo superimposed signals by using the unused spreading codes related to the corresponding pseudo superimposed signals, and the spreading codes already used for communication channels that previously have been established; and a spreading code selector for selecting an unused spreading code based on data for the communication channels reproduced for the pseudo superimposed signals and the reproduced dummy original data. With this configuration, a method can be provided whereby, in accordance with the usage condition of a network, a code sequence having a preferable correlation property can be selected, from among a number of code sequences that are generated, and allocated to a communication channel.
    • 根据本发明,选择未使用的扩展码或多个未使用的扩展码之一的码选择装置,用于分配给新的通信信道,包括:虚拟扩展信号发生器,用于解密虚拟原始数据, 使用未使用的扩展码或可用于使用的代码,并产生虚拟扩展信号; 叠加单元,用于叠加虚拟扩展信号和接收信号并形成伪叠加信号; 解扩单元,用于通过使用与相应的伪叠加信号相关的未使用的扩展码来解扩复叠信号,以及已经用于先前建立的通信信道的扩展码; 以及扩展码选择器,用于基于针对伪叠加信号和再现的虚拟原始数据再现的通信信道的数据来选择未使用的扩展码。 利用这种配置,可以提供一种方法,根据网络的使用条件,可以从生成并分配给通信信道的多个代码序列中选择具有优选的相关性的代码序列 。
    • 9. 发明申请
    • Optical code division multiplexing transmission and reception method and optical code division multiplexing transceiver
    • 光码分复用收发方法和光码分复用收发器
    • US20060115272A1
    • 2006-06-01
    • US11284971
    • 2005-11-23
    • Naoki MinatoAkihiko NishikiHideyuki IwamuraTakashi Ushikubo
    • Naoki MinatoAkihiko NishikiHideyuki IwamuraTakashi Ushikubo
    • H04J14/00
    • H04J14/005H04J14/02
    • An object of the present invention is to provide an OCDM transceiver with which the reduction amount of the intensity of the correlation waveform signal is smaller than that of a conventional device of the same type in the decoding step that comprises a time gate processing step. Hence, in the OCDM transceiver of the present invention that comprises an encoding portion and a decoding portion, the decoding portion is constituted comprising a decoder, clock extractor, and time gate. The decoder decodes an encoded optical pulse signal and separates the encoded optical pulse signal into a clock signal extraction signal and an optical pulse signal playback signal. The clock extractor extracts a clock signal from the clock signal extraction signal. Further, the time gate removes only the auto-correlation waveform component from the optical pulse signal playback signal. The auto-correlation waveform component is converted to an electrical signal by means of an optical receiver and generated as a reception signal.
    • 本发明的目的是提供一种OCDM收发器,在包括时间门处理步骤的解码步骤中,相关波形信号的强度的减少量比相同类型的常规装置的减少量小。 因此,在包括编码部分和解码部分的本发明的OCDM收发器中,解码部分包括解码器,时钟提取器和时间门。 解码器解码编码的光脉冲信号,并将编码的光脉冲信号分离成时钟信号提取信号和光脉冲信号重放信号。 时钟提取器从时钟信号提取信号中提取时钟信号。 此外,时间栅极仅从光脉冲信号重放信号中去除自相关波形分量。 自相关波形分量通过光接收机转换为电信号,并作为接收信号产生。