公开(公告)号：US08218975B2

公开(公告)日：2012-07-10

申请号：US12650663

申请日：2009-12-31

申请人： Cechan Tian ,  Takao Naito

发明人： Cechan Tian ,  Takao Naito

IPC分类号： H04B10/06

CPC分类号： H04B10/677

摘要： A demodulator comprises an input splitter, optical device sets, and couplers. The input splitter splits an input signal comprising symbols to yield a number of signals. A first optical device set directs a signal of along a first path. A second optical device set directs another signal along a second path to yield a delayed signal. At least a portion of the second path is in free space. A path length difference between the first path and the second path introduces a delay between the first signal and the second signal. A coupler receives a portion of the signal and a portion of the delayed signal to generate interference, where the interference indicates a phase shift between a phase corresponding to a symbol and a successive phase corresponding to a successive symbol.

摘要翻译： 解调器包括输入分配器，光学器件组和耦合器。 输入分路器分离包括符号的输入信号以产生多个信号。 第一光学装置组引导沿着第一路径的信号。 第二光学装置组沿着第二路径引导另一个信号以产生延迟的信号。 第二路径的至少一部分在自由空间中。 第一路径和第二路径之间的路径长度差引入第一信号和第二信号之间的延迟。 耦合器接收信号的一部分和延迟信号的一部分以产生干扰，其中干扰表示对应于符号的相位和对应于连续符号的连续相位之间的相移。

公开(公告)号：US20110242995A1

公开(公告)日：2011-10-06

申请号：US12751656

申请日：2010-03-31

申请人： Qiong Zhang ,  Mohammad Masud Hasan ,  Xi Wang ,  Paparao Palacharla ,  Takao Naito ,  Fredrick S. Gruman

发明人： Qiong Zhang ,  Mohammad Masud Hasan ,  Xi Wang ,  Paparao Palacharla ,  Takao Naito ,  Fredrick S. Gruman

IPC分类号： H04J1/16 ,  H04L12/28

CPC分类号： H04L45/12 ,  H04L45/00 ,  H04L45/02 ,  H04L45/04 ,  H04L45/126 ,  H04L45/128 ,  H04L45/22 ,  H04L45/28

摘要： Systems and methods for multi-domain routing are provided. In some embodiments, a method for determining a path calculation from a source node to a destination node over a multi-domain network is provided. The method may include steps for receiving a predetermined sequence of domains for communicating information from the source node to the destination node, determining a link type for each of a plurality of links in the predetermined sequence of domains, modifying the link type of one or more of the plurality of links such that the plurality of links are unidirectional links towards a destination node, and determining a path along the predetermined sequence of domains based on the modified plurality of links.

摘要翻译： 提供了多域路由的系统和方法。 在一些实施例中，提供了一种用于确定通过多域网络从源节点到目的地节点的路径计算的方法。 该方法可以包括用于接收用于将信息从源节点传送到目的地节点的预定的域序列的步骤，为预定的域序列中的多个链路中的每一个确定链路类型，修改一个或多个链路的链路类型 所述多个链路使得所述多个链路是朝向目的地节点的单向链路，以及基于所述修改的多个链路来确定沿着所述预定的域序列的路径。

公开(公告)号：US20110223961A1

公开(公告)日：2011-09-15

申请号：US12956710

申请日：2010-11-30

申请人： Wei-Peng Chen ,  Chenxi Zhu ,  Takao Naito

发明人： Wei-Peng Chen ,  Chenxi Zhu ,  Takao Naito

IPC分类号： H04B7/00

CPC分类号： H04W52/20 ,  H04B7/022 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/15535 ,  H04W52/143 ,  H04W52/24 ,  H04W52/241 ,  H04W52/267 ,  H04W52/386 ,  H04W52/40 ,  H04W72/0473 ,  H04W88/085 ,  Y02D70/00

摘要： In accordance with particular embodiments, a method for adjusting power distribution includes establishing a connection between a base station and a plurality of remote transceivers. The method also includes establishing a plurality of wireless connections with a plurality of endpoints via one or more of the plurality of remote transceivers. The method further includes determining a plurality of signal quality indications. Each signal quality indication is associated with a different one of a plurality of unique endpoint-remote transceiver pairs. The method additionally includes determining a power distribution for the plurality of remote transceivers based on the plurality of signal quality indications and an optimization equation. The optimization equation is configured to optimize a data throughput associated with the plurality of wireless connections by determining a power gain for each of the wireless connections.

摘要翻译： 根据具体实施例，一种用于调节功率分配的方法包括建立基站与多个远程收发器之间的连接。 该方法还包括通过多个远程收发器中的一个或多个建立与多个端点的多个无线连接。 该方法还包括确定多个信号质量指示。 每个信号质量指示与多个唯一端点 - 远程收发器对中的不同的一个相关联。 该方法还包括基于多个信号质量指示和优化方程来确定多个远程收发机的功率分配。 优化方程被配置为通过确定每个无线连接的功率增益来优化与多个无线连接相关联的数据吞吐量。

公开(公告)号：US20110176813A1

公开(公告)日：2011-07-21

申请号：US12690682

申请日：2010-01-20

申请人： Inwoong Kim ,  Paparao Palacharla ,  Takao Naito

发明人： Inwoong Kim ,  Paparao Palacharla ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04B10/505 ,  H04B10/516

摘要： A system is provided for electrical domain optical spectrum shaping. The system may include a laser, a modulator, a first electrical filter, and a second electrical filter. The laser may be configured to output an optical carrier signal. The modulator may be configured to modulate the optical carrier signal to output a modulated optical signal based on a first filtered input signal and a second filtered input signal received by the modulator. The first electrical filter may be configured to filter a first input signal to produce the first filtered input signal. The second electrical filter may be configured to filter a second input signal to produce the second filtered input signal.

摘要翻译： 提供了一种用于电域光谱成形的系统。 该系统可以包括激光器，调制器，第一电过滤器和第二电过滤器。 激光器可以被配置为输出光载波信号。 调制器可以被配置为基于由调制器接收的第一滤波输入信号和第二滤波输入信号来调制光载波信号以输出调制光信号。 第一电气滤波器可以被配置为滤波第一输入信号以产生第一滤波输入信号。 第二电气滤波器可以被配置为滤波第二输入信号以产生第二滤波输入信号。

公开(公告)号：US07860402B2

公开(公告)日：2010-12-28

申请号：US11627401

申请日：2007-01-26

申请人： Cechan Tian ,  Takao Naito

发明人： Cechan Tian ,  Takao Naito

IPC分类号： H04L27/20

CPC分类号： H04L27/2096 ,  H04B10/5561 ,  H04L27/2046 ,  H04L27/205

摘要： A system operable to modulate a signal according to phase-shift keying (PSK) modulation includes a translator and a phase modulation system. The translator receives data signals and translates the data signals into control signals, where the number of control signals is greater than the number of data signals. The phase modulation system includes phase modulators. Each phase modulator receives a control signal and PSK modulates a communication signal according to the control signal.

摘要翻译： 可操作以根据相移键控（PSK）调制来调制信号的系统包括转换器和相位调制系统。 转换器接收数据信号并将数据信号转换成控制信号，其中控制信号的数量大于数据信号的数量。 相位调制系统包括相位调制器。 每个相位调制器接收控制信号，PSK根据控制信号调制通信信号。

公开(公告)号：US07715709B2

公开(公告)日：2010-05-11

申请号：US10914220

申请日：2004-08-10

申请人： Kouichirou Amemiya ,  Takao Naito ,  Toshiki Tanaka

发明人： Kouichirou Amemiya ,  Takao Naito ,  Toshiki Tanaka

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0221 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0284 ,  H04L45/12 ,  H04L45/48 ,  H04L45/62 ,  H04Q11/0062 ,  H04Q2011/0073

摘要： The optical switch, having a plurality of ports capable of switching optical signal routes in a network in the form of light, includes a detection means for detecting information in regard to the transmission condition of an optical signal passing through each port; and a control means for exchanging the transmission condition information between each switch and controlling the ports, so as to select one route from among a plurality of routes transmitting the optical signal based on the difference of transmission condition information between the relevant switches. The transmission condition information is the power of the optical signal. When the difference between each switch exists, or when at least one switch intervenes in the middle of the transmission route, by selecting a transmission route which minimizes accumulated differences among the switches, configuring a tree structure conventionally performed through manual operation can be set automatically in an optical network system.

摘要翻译： 具有能够以光的形式在网络中切换光信号路径的多个端口的光开关包括检测装置，用于检测通过每个端口的光信号的发送状态的信息; 以及控制装置，用于在每个交换机之间交换传输条件信息并控制端口，以便基于相关交换机之间的传输条件信息的差异，从发送光信号的多个路由中选择一个路由。 发送条件信息是光信号的功率。 当存在每个开关之间的差异时，或者当至少一个开关插入在传输路由的中间时，通过选择使开关之间的累积差异最小化的传输路由，可以自动设置通过手动操作常规执行的树结构 光网络系统。

公开(公告)号：US07664397B2

公开(公告)日：2010-02-16

申请号：US11038281

申请日：2005-01-21

申请人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

发明人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

IPC分类号： H04B10/00

CPC分类号： H04J14/0227 ,  H04J14/0221 ,  H04J14/0241 ,  H04J14/0284

摘要： An optical network system enabling confirmation of connection and tracking of wavelength paths at a high speed and a low cost without introducing any special hardware by having a wavelength path monitoring unit in an NMS give temporary change of optical power through a change generating unit to an optical signal S from an optical transmitting/receiving node, by having a change detecting unit confirm that this change of optical power has propagated through an optical transmission line and appeared at each node on the way, and confirming connections and monitoring the wavelength path while confirming the presence of the change.

摘要翻译： 通过在NMS中具有波长路径监视单元，能够以高速和低成本确认波长路径的连接和跟踪而不引入任何特殊硬件的光网络系统通过改变生成单元将光功率暂时改变为光 来自光发送/接收节点的信号S通过使变化检测单元确认光功率的这种变化已经通过光传输线传播并出现在路径上的每个节点处，并确认连接并监测波长路径，同时确认 存在变化。

公开(公告)号：US07653124B2

公开(公告)日：2010-01-26

申请号：US11538158

申请日：2006-10-03

申请人： Cechan Tian ,  Takao Naito

发明人： Cechan Tian ,  Takao Naito

IPC分类号： H04B3/46

CPC分类号： H04L27/22 ,  H04L2027/0016 ,  H04L2027/0024

摘要： Monitoring a demodulator includes repeating the following for each demodulating module of one or more demodulating modules of a demodulator: receiving a first signal and a second signal from a demodulating module; introducing a relative delay between the first signal and the second signal; and asynchronously sampling the first signal and the second signal to yield samples. Image data representing the samples associated with the demodulating modules is generated. The image data indicates one or more mismatches of the demodulator.

摘要翻译： 监视解调器包括对解调器的一个或多个解调模块的每个解调模块重复以下：从解调模块接收第一信号和第二信号; 引入第一信号和第二信号之间的相对延迟; 并且异步地采样第一信号和第二信号以产生采样。 生成表示与解调模块相关联的样本的图像数据。 图像数据表示解调器的一个或多个失配。

公开(公告)号：US20090201564A1

公开(公告)日：2009-08-13

申请号：US12426394

申请日：2009-04-20

申请人： Cechan Tian ,  Takao Naito

发明人： Cechan Tian ,  Takao Naito

IPC分类号： H04B10/08 ,  G01J1/20 ,  G02F1/00

CPC分类号： G02F1/0123 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2201/58

摘要： Monitoring a bias point of an optical modulator includes receiving an optical signal modulated by the optical modulator. Photons of the optical signal are received at a photon reactive material operable to produce a reaction in response to the arrival of a predetermined number of photons. Reactions are produced in response to the arrival of the photons of the optical signal. Feedback is generated in response to the reactions. The feedback reflects the waveform of the optical signal, and indicates one or more bias points of the optical modulator.

摘要翻译： 监视光调制器的偏置点包括接收由光调制器调制的光信号。 光信号的光子在能够响应于预定数量的光子的到达而产生反应的光子反应性材料处被接收。 响应于光信号的光子的到达而产生反应。 响应反应生成反馈。 反馈反映了光信号的波形，并表示光调制器的一个或多个偏置点。

公开(公告)号：US07539360B2

公开(公告)日：2009-05-26

申请号：US11233650

申请日：2005-09-23

申请人： Cechan Tian ,  Takao Naito

发明人： Cechan Tian ,  Takao Naito

IPC分类号： G02F1/295 ,  G02B6/12 ,  G02B6/26

CPC分类号： G02F1/0123 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2201/58

摘要： Monitoring a bias point of an optical modulator includes receiving an optical signal modulated by the optical modulator. Photons of the optical signal are received at a photon reactive material operable to produce a reaction in response to the arrival of a predetermined number of photons. Reactions are produced in response to the arrival of the photons of the optical signal. Feedback is generated in response to the reactions. The feedback reflects the waveform of the optical signal, and indicates one or more bias points of the optical modulator.

摘要翻译： 监视光调制器的偏置点包括接收由光调制器调制的光信号。 光信号的光子在能够响应于预定数量的光子的到达而产生反应的光子反应性材料处被接收。 响应于光信号的光子的到达而产生反应。 响应反应生成反馈。 反馈反映了光信号的波形，并表示光调制器的一个或多个偏置点。