会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • CHROMATIC DISPERSION VALUE CALCULATING APPARATUS, OPTICAL SIGNAL RECEIVING APPARATUS, OPTICAL SIGNAL TRANSMITTING APPARATUS, AND CHROMATIC DISPERSION VALUE CALCULATION METHOD
    • 色散值计算装置,光信号接收装置,光信号传输装置和色散值计算方法
    • US20120099864A1
    • 2012-04-26
    • US13380432
    • 2010-07-14
    • Koichi IshiharaTakayuki KobayashiRiichi KudoYasushi TakatoriMunehiro MatsuiMasato MizoguchiTadao NakagawaEtsushi YamazakiAkihide SanoYutaka MiyamotoEiji YoshidaShogo Yamanaka
    • Koichi IshiharaTakayuki KobayashiRiichi KudoYasushi TakatoriMunehiro MatsuiMasato MizoguchiTadao NakagawaEtsushi YamazakiAkihide SanoYutaka MiyamotoEiji YoshidaShogo Yamanaka
    • H04J14/06H04B10/00
    • H04B10/0775H04B3/06H04B10/25133
    • 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.
    • 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。
    • 6. 发明授权
    • Adaptive array antenna transceiver apparatus
    • 自适应阵列天线收发器装置
    • US06690952B2
    • 2004-02-10
    • US09737972
    • 2000-12-14
    • Kentaro NishimoriKeizo ChoYasushi TakatoriToshikazu Hori
    • Kentaro NishimoriKeizo ChoYasushi TakatoriToshikazu Hori
    • H04B138
    • H01Q3/2605H01Q3/267H04B7/0617H04B17/12H04B17/20
    • An adaptive array antenna transceiver apparatus provides: a local signal generator 24 that outputs a signal having a frequency that corresponds to the difference between the reception frequency and the transmitting frequency; a coupler 15 that separates and extracts a part of the signals from the output of the transmitters 13; a switch 21 that selects the signal output from any one of the transmitters 13; a frequency converter 22 that converts the frequency of the signal selected by the switch 21; and a switch 23 that inputs signals output by the frequency converter 22 and selectively outputs them to any one of the plurality of paths. The transceiver further provides a switch 16 that selectively inputs a reception signal from a said antenna elements or a signal from said second switch into each of said receivers; and a calibration control processor 25 that controls the connection state of said switches 16, 21, 23, inputs the amplitude and phase values obtained at the receivers 14, and finds the calibration value of each of the branches of the array antenna.
    • 自适应阵列天线收发器装置提供:本地信号发生器24,其输出具有对应于接收频率和发射频率之间的差的频率的信号; 耦合器15,其从发射器13的输出中分离并提取一部分信号; 选择从任一发射机13输出的信号的开关21; 频率转换器22,其转换由开关21选择的信号的频率; 以及开关23,其输入由变频器22输出的信号,并选择性地将它们输出到多个路径中的任一个。 收发器进一步提供开关16,其选择性地将来自所述天线元件的接收信号或来自所述第二开关的信号输入到每个所述接收器中; 并且控制所述开关16,21,23的连接状态的校准控制处理器25输入在接收器14处获得的振幅和相位值,并且找出阵列天线的每个分支的校准值。
    • 10. 发明授权
    • Adaptive antenna control method and adaptive antenna transmission/reception characteristic control method
    • 自适应天线控制方法和自适应天线发射/接收特性控制方法
    • US07302232B2
    • 2007-11-27
    • US09941399
    • 2001-08-28
    • Yasushi TakatoriKeizo ChoToshikazu HoriKentaro Nishimori
    • Yasushi TakatoriKeizo ChoToshikazu HoriKentaro Nishimori
    • H04B1/00H04M1/00H04Q7/20
    • H01Q3/2605H04B7/0617
    • An adaptive antenna control method is used for a radio communication system built by a plurality of radio base stations and a plurality of terminal stations capable of communicating with the radio base stations. Each radio base station includes an adaptive antenna having a plurality of antenna elements, a distributor for generating signals to be input to the plurality of antenna elements by branching a signal of one system to be transmitted, and weighting circuits for respectively weighting transmission signals to the plurality of antenna elements. For reception by each terminal station, an interference wave power given by the transmission signal from each of the plurality of radio base stations is estimated. A weight in the adaptive antenna of each radio base station is determined to minimize a sum of square errors between reception signals and desired signals for all the radio base stations which simultaneously use the same communication channel. An adaptive antenna transmission/reception characteristic control method is also disclosed.
    • 自适应天线控制方法用于由能够与无线基站通信的多个无线基站和多个终端站构成的无线通信系统。 每个无线电基站包括具有多个天线元件的自适应天线,分配器,用于通过分支要发送的一个系统的信号来产生要输入到多个天线元件的信号;以及加权电路,用于分别将传输信号加权到 多个天线元件。 对于每个终端接收,估计来自多个无线基站中的每一个的发送信号给出的干扰波功率。 每个无线电基站的自适应天线中的权重被确定为最小化同时使用相同通信信道的所有无线电基站的接收信号与期望信号之间的平方误差之和。 还公开了一种自适应天线发射/接收特性控制方法。