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1. 发明授权

US6097766A Timing phase synchronization detecting circuit and demodulator 失效
标题翻译：定时相位同步检测电路和解调器
公开(公告)号：US6097766A
公开(公告)日：2000-08-01
申请号：US177103
申请日：1998-10-22
申请人： Seiji Okubo , Akinori Fujimura , Makoto Miyake
发明人： Seiji Okubo , Akinori Fujimura , Makoto Miyake
IPC分类号： H04L27/22 , H03L7/095 , H03L7/107 , H04L7/00 , H04L7/033 , H04L7/04 , H04L27/00 , H04L27/233 , H04L27/14
CPC分类号： H04L27/2332 , H04L7/033 , H03L7/095 , H03L7/107 , H04L2027/003 , H04L2027/0036 , H04L7/046
摘要： A demodulator is made compact, and with a simple circuit arrangement, and also having a better bit error rate characteristic. A timing phase synchronization detecting circuit 219 judges any one of the following two conditions based upon baseband phase data 202, i.e., an UNLOCK (timing phase asynchronous) condition, and a LOCK (timing phase synchronous) condition. Based upon the judgement result of the timing phase synchronization detecting circuit 219, in a timing recovering means 221, a frequency range of a PLL (phase synchronization loop) is variable, whereas the number of data entered within 1 symbol time is variable in a frequency synchronizing means 222 and a carrier recovering means 223. A data demodulating means 224 outputs demodulation data 206 in response to baseband phase data 202 and a recovery carrier signal 205.
摘要翻译：解调器紧凑，并且具有简单的电路布置，并且还具有更好的误码率特性。定时相位同步检测电路219基于基带相位数据202，即UNLOCK（定时相位异步）状态和LOCK（定时相位同步））条件来判断以下两个条件中的任何一个。基于定时相位同步检测电路219的判断结果，在定时恢复装置221中，PLL（相位同步回路）的频率范围是可变的，而在1个符号时间内输入的数据数可以变化同步装置222和载波恢复装置223.数据解调装置224响应于基带相位数据202和恢复载波信号205输出解调数据206。

2. 发明授权

US06522684B2 Delay lock loop, receiver, and spectrum spreading communication system 失效
标题翻译：延迟锁定环路，接收机和频谱扩展通信系统
公开(公告)号：US06522684B2
公开(公告)日：2003-02-18
申请号：US09778938
申请日：2001-02-08
申请人： Seiji Okubo , Toshiharu Kojima , Akinori Fujimura
发明人： Seiji Okubo , Toshiharu Kojima , Akinori Fujimura
IPC分类号： H04B1707
CPC分类号： H04B1/7085
摘要： In a DLL, in-phase correlation signal and orthogonal correlation signal are squared and adder to generate correlation power. Delays are provided so that the peaks of N number of divided correlation power portions to have coincided timing with each other. Composite correlation power is generated from the respective correlation power portions. A composite error signal of a sample clock is generated by subtracting the composite correlation power from the composite correlation power that has been delayed. A data clock is generated by frequency-dividing the sample clock based upon an acquisition pulse. A sample clock is finally generated based upon the composite error signal that has been latched and noise-removed therefrom in synchronized timing with the data clock that has been delayed.
摘要翻译：在DLL中，将相位相关信号和正交相关信号进行平方并产生相关功率。提供延迟使得N个分割的相关功率部分的峰值彼此具有一致的时序。从相应的相关功率部分产生复合相关功率。通过从延迟的复合相关功率中减去复合相关功率来产生采样时钟的复合误差信号。通过基于采集脉冲对采样时钟进行分频而产生数据时钟。基于已经被锁定并且与已被延迟的数据时钟同步定时噪声去除的复合误差信号，最终产生采样时钟。

3. 发明授权

US06212222B1 Initial acquisition circuit 失效
标题翻译：初始采集电路
公开(公告)号：US06212222B1
公开(公告)日：2001-04-03
申请号：US09482869
申请日：2000-01-14
申请人： Seiji Okubo , Akinori Fujimura , Takashi Asahara , Toshiharu Kojima
发明人： Seiji Okubo , Akinori Fujimura , Takashi Asahara , Toshiharu Kojima
IPC分类号： H04B1707
CPC分类号： H04B1/708 , H04B1/709
摘要： In the identical spread code multiplex SS system, a delay correction unit and a multiplexer calculates the multiplexed square correlation value by matching the peak values and adding the square correlation values of all the multiplexed signals. The multiplexed signals are the signals obtained by multiplexing an RF signal in such manner that different specific delay times are respectively given to parallel transmission information sequences multiplied by identical spread codes. Therefore, code synchronization can be realized by using only one correlator for both the orthogonal and an in-phase components.
摘要翻译：在相同的扩展码多路复用SS系统中，延迟校正单元和复用器通过匹配峰值并将所有多路复用信号的平方相关值相加来计算复用的平方相关值。多路复用信号是通过对以下信号进行复用得到的信号而获得的信号，即以不同的特定延迟时间分别赋予乘以相同扩展码的并行传输信息序列。因此，可以通过对正交和同相分量仅使用一个相关器来实现代码同步。

4. 发明授权

US06850576B2 Method and apparatus for reproducing timing, and a demodulating apparatus that uses the method and apparatus for reproducing timing 有权
标题翻译：用于再现定时的方法和装置，以及使用该方法和装置再现定时的解调装置
公开(公告)号：US06850576B2
公开(公告)日：2005-02-01
申请号：US09775595
申请日：2001-02-05
申请人： Akinori Fujimura , Seiji Okubo , Toshiharu Kojima
发明人： Akinori Fujimura , Seiji Okubo , Toshiharu Kojima
IPC分类号： H04L7/00 , H04L7/02 , H04L7/033 , H04L27/22 , H04L27/14
CPC分类号： H04L7/0054 , H04L7/0029 , H04L7/0334 , H04L27/22
摘要： A base band signal is sampled, based on an asynchronous sampling clocking, to output two sampled data series. A transmission side complex symbol frequency generator generates a complex transmission symbol frequency component combining an envelope value and an amplitude change amount value, which are each calculated from the two sampled data series. The transmission side complex symbol frequency component is provided to a correlation value calculator that outputs a correlation data series correlated to the complex symbol frequency and the symbol frequency generated by a cosine wave generator. The correlation data series is converted a timing error by an inverse tangent calculator. By the above configuration, a timing reproducing unit, which includes the above components, determines the timing error at a sampling speed of twice the symbol rate.
摘要翻译：基于异步采样时钟对基带信号进行采样，以输出两个采样数据序列。发送侧复符号频率发生器生成组合由两个采样数据序列计算的包络值和振幅变化量值的复合发送符号频率分量。发送侧复符号频率分量被提供给输出与复数符号频率相关的相关数据序列和由余弦波发生器产生的符号频率的相关值计算器。相关数据序列通过反正切计算器转换定时误差。通过上述配置，包括上述组件的定时再现单元以符号率的两倍的采样速度确定定时误差。

5. 发明授权

US06650718B1 Timing reproducer and demodulator comprising this 失效
标题翻译：包括此的定时再现器和解调器
公开(公告)号：US06650718B1
公开(公告)日：2003-11-18
申请号：US09926091
申请日：2001-08-28
申请人： Akinori Fujimura , Seiji Okubo , Toshiharu Kojima
发明人： Akinori Fujimura , Seiji Okubo , Toshiharu Kojima
IPC分类号： H04L700
CPC分类号： H04L27/2273 , H04L7/0029 , H04L7/0334 , H04L7/041 , H04L2027/0028 , H04L2027/0036 , H04L2027/0067 , H04L2027/0095
摘要： A timing recovery device and demodulator. An adding device adds together an in-phase component and a quadrature component of a base band signal. A subtracting device subtracts the in-phase component and the quadrature component of the base band signal from each other. Then, the correlation between the added signal and a ½ symbol frequency component generated at the receiver side and the correlation between the subtracted value and the ½ symbol frequency component are calculated. A vector selector compares the added value correlation signal and the subtracted value correlation signal, and selects the larger one of the correlation signals. A timing phase difference calculator then calculates a timing phase difference, using the vector angle indicated by the selected correlation signal.
摘要翻译：定时恢复装置和解调器。加法装置将基带信号的同相分量和正交分量相加在一起。减法装置相减基带信号的同相分量和正交分量。然后，计算相加信号与在接收机侧产生的1/2符号频率分量之间的相关性以及减去的值和1/2符号频率分量之间的相关性。向量选择器比较相加值相关信号和相减值相关信号，并选择较大的一个相关信号。定时相位差计算器然后使用由所选择的相关信号指示的矢量角度来计算定时相位差。

6. 发明授权

US06728298B1 Spread spectrum communication system and method for the same 失效
标题翻译：扩频通信系统和方法相同
公开(公告)号：US06728298B1
公开(公告)日：2004-04-27
申请号：US09518266
申请日：2000-03-03
申请人： Seiji Okubo , Akinori Fujimura , Toshiharu Kojima
发明人： Seiji Okubo , Akinori Fujimura , Toshiharu Kojima
IPC分类号： H04B1707
CPC分类号： H04J13/00 , H04B2201/70706 , H04L27/2621
摘要： There are provided a spread code generating section generates a spread code list from the input parallel information, spread modulating sections generate a plurality of parallel spectrum spread signals corresponding to the parallel information list by multiplying each of the parallel information list and the spread code list respectively, phase shifting sections shift the phase of the parallel spectrum spread signals, delay sections delay the parallel spectrum spread signals. A multiplexing section generates a multiplexed spectrum spread signal by adding the delayed parallel spectrum spread signals. The multiplexed spectrum spread signal are converted into a radio frequency signal, amplified and then transmitted.
摘要翻译：提供了一种扩展码生成部分，根据输入并行信息生成扩展码列表，扩频调制部分分别通过并行信息列表和扩展码列表分别生成与并行信息列表相对应的多个并行频谱扩展信号，相移部分移动并行扩频信号的相位，延迟部分延迟并行频谱扩展信号。多路复用部分通过加上延迟的并行频谱扩展信号来产生复用的频谱扩展信号。复用的频谱扩展信号被转换成射频信号，被放大然后传输。

7. 发明申请

US20110222467A1 DEMULTIPLEXING APPARATUS, MULTIPLEXING APPARATUS, COMMUNICATION APPARATUS, AND RELAY SATELLITE 有权
标题翻译：复用装置，多路复用装置，通信装置和继电器卫星
公开(公告)号：US20110222467A1
公开(公告)日：2011-09-15
申请号：US13129126
申请日：2009-09-30
申请人： Akinori Fujimura , Yasushi Sogabe
发明人： Akinori Fujimura , Yasushi Sogabe
IPC分类号： H04B7/185
CPC分类号： H03H17/0664 , H04J1/05
摘要： A demultiplexing apparatus includes, in each of n stages, 2n FC+RXHBFs that down-sample a signal, from which a high-frequency component is removed after frequency conversion is carried out, and output the signal. The demultiplexing apparatus extracts, from an input signal including a plurality of band signals, the band signals to thereby demultiplex the input signal. The demultiplexing apparatus includes a reception-filter-bank control unit that calculates, based on channel information including bands and frequency arrangement of the band signals, a dividing position on a frequency axis and a frequency offset value indicating a frequency conversion value and instructs the FC+RXHBF, which is set as a target of output of divided signals of the input signal, about the calculated values. The FC+RXHBF carries out frequency conversion based on the frequency offset value.
摘要翻译：解复用装置在n个级中分别包括2n个FC + RXHBF，它们对进行频率转换之后的高频分量从其中被去除的信号进行下采样，并输出该信号。解复用装置从包括多个频带信号的输入信号中提取频带信号，从而解复用输入信号。解复用装置包括接收滤波器组控制单元，其基于包括频带信号的频带和频率排列的频道信息，频率轴上的分割位置和指示频率转换值的频率偏移值来计算，并且指示FC + RXHBF，其被设置为输入信号的分割信号的输出的目标，关于计算值。 FC + RXHBF基于频率偏移值进行频率转换。

8. 发明申请

US20060121921A1 Transmitter apparatus, receiver apparatus and radio communication apparatus 审中-公开
标题翻译：发送装置，接收装置以及无线通信装置
公开(公告)号：US20060121921A1
公开(公告)日：2006-06-08
申请号：US10562123
申请日：2004-06-25
申请人： Yoshikatsu Tajima , Akinori Fujimura , Yukimasa Nagai , Hiroaki Hirai , Mari Ochiai
发明人： Yoshikatsu Tajima , Akinori Fujimura , Yukimasa Nagai , Hiroaki Hirai , Mari Ochiai
IPC分类号： H04B7/00 , H04M1/00
CPC分类号： H04L27/2605 , H04L5/0023 , H04L5/0037 , H04L5/0051 , H04L5/0085 , H04L5/0096 , H04L5/023 , H04L25/03866
摘要： A MAC unit divides data to be transmitted into number of applying channels, thereby generating transmission data. An applying-channel notifying unit inserts channel information for identifying an applying channel into a used area of the transmission data. Transmission processing units corresponding to the applying channels generate radio frames from the transmission data into which the channel information is inserted, and transmit the generated radio frames to the radio communication apparatus at the reception side.
摘要翻译： MAC单元将要发送的数据划分为多个应用信道，从而生成发送数据。应用信道通知单元将用于识别应用信道的信道信息插入到传输数据的使用区域中。对应于应用信道的发送处理单元从插入信道信息的发送数据生成无线帧，并将所生成的无线帧发送到接收侧的无线通信装置。

9. 发明授权

US08675628B2 Demultiplexing apparatus, multiplexing apparatus, communication apparatus, and relay satellite 有权
标题翻译：解复用装置，多路复用装置，通信装置和中继卫星
公开(公告)号：US08675628B2
公开(公告)日：2014-03-18
申请号：US13129126
申请日：2009-09-30
申请人： Akinori Fujimura , Yasushi Sogabe
发明人： Akinori Fujimura , Yasushi Sogabe
IPC分类号： H04J1/00 , H04L27/06
CPC分类号： H03H17/0664 , H04J1/05
摘要： A demultiplexing apparatus includes, in each of n stages, 2n FC+RXHBFs that down-sample a signal, from which a high-frequency component is removed after frequency conversion is carried out, and output the signal. The demultiplexing apparatus extracts, from an input signal including a plurality of band signals, the band signals to thereby demultiplex the input signal. The demultiplexing apparatus includes a reception-filter-bank control unit that calculates, based on channel information including bands and frequency arrangement of the band signals, a dividing position on a frequency axis and a frequency offset value indicating a frequency conversion value and instructs the FC+RXHBF, which is set as a target of output of divided signals of the input signal, about the calculated values. The FC+RXHBF carries out frequency conversion based on the frequency offset value.
摘要翻译：解复用装置在n个级中分别包括2n个FC + RXHBF，它们对进行频率转换之后的高频分量从其中被去除的信号进行下采样，并输出该信号。解复用装置从包括多个频带信号的输入信号中提取频带信号，从而解复用输入信号。解复用装置包括接收滤波器组控制单元，其基于包括频带信号的频带和频率排列的频道信息，频率轴上的分割位置和指示频率转换值的频率偏移值来计算，并且指示FC + RXHBF，其被设置为输入信号的分割信号的输出的目标，关于计算值。 FC + RXHBF基于频率偏移值进行频率转换。

10. 发明申请

US20110206155A1 COMMUNICATION APPARATUS AND COMMUNICATION SYSTEM 有权
标题翻译：通信设备和通信系统
公开(公告)号：US20110206155A1
公开(公告)日：2011-08-25
申请号：US13126792
申请日：2009-07-02
申请人： Akinori Fujimura , Kazunari Kihira , Yasushi Sogabe
发明人： Akinori Fujimura , Kazunari Kihira , Yasushi Sogabe
IPC分类号： H04L1/02
CPC分类号： H04B7/086 , H04B7/18563 , H04W84/06
摘要： A communication apparatus that can suppress an increase in circuit size and reduce influence of interference, includes reception array antenna elements, a reception DBF network that generates a reception beam signal for forming M reception beams using a reception signal, and reception FBs that generate frequency split reception beam signals obtained by frequency-splitting the reception beam signal. The communication apparatus includes an interference-source detecting unit that stores, for each reception beam, an interference candidate beam area estimated based on an initial reception beam characteristic, calculates, based on the frequency split reception beam signals, a reception spectrum, and calculates, based on the reception spectrum and a reception spectrum of a reception beam to the interference candidate beam area, an interference source area. The reception DFB network generates a reception beam signal to perform null formation in the direction of the interference source area.
摘要翻译：能够抑制电路尺寸的增加和减少干扰的影响的通信装置包括：接收阵列天线元件，使用接收信号生成接收波束信号的接收波束信号的接收DBF网络，以及产生频率分割的接收FB 通过对接收波束信号进行分频而获得的接收波束信号。通信装置包括干扰源检测单元，对于每个接收波束，存储基于初始接收波束特性估计的干扰候补波束区域，根据频率分割接收波束信号，计算接收频谱，基于接收频谱和对干扰候选波束区域的接收波束的接收频谱，干扰源区域。接收DFB网络产生接收波束信号，以在干扰源区域的方向上执行无效形成。

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