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1. 发明授权

US08311146B2 Radio communication system 有权
标题翻译：无线通信系统
公开(公告)号：US08311146B2
公开(公告)日：2012-11-13
申请号：US12529346
申请日：2008-03-04
申请人： Akinori Fujimura , Yasushi Sogabe , Fumio Ishizu , Tadashi Takagi , Hiroyuki Nakase , Kazuo Tsubouchi , Suguru Kameda , Shoichi Oshima
发明人： Akinori Fujimura , Yasushi Sogabe , Fumio Ishizu , Tadashi Takagi , Hiroyuki Nakase , Kazuo Tsubouchi , Suguru Kameda , Shoichi Oshima
IPC分类号： H04L27/00
CPC分类号： H04L27/2637 , H04L27/2014 , H04L27/2614 , H04L27/2653 , H04L27/2662 , H04L27/2691
摘要： A transmission device (10) includes: a series/parallel converter (11); an MSK modulator (31) for modulating a signal on a channel basis; a D/A converter (13); a frequency converter (14a) for conversion into different carrier frequencies; a synchronization circuit (32); an amplifier (15); a multiplexer (16) for multiplexing amplification signals; and an antenna (19). A reception device (20) includes: an antenna (21); a demultiplexer (22); a frequency converter (23) for converting signal demultiplexed on a channel basis into a baseband frequency; a low-pass filter (33) for removing a higher-harmonic component of the signal; an A/D converter (24); a digital filter (36) for extracting a main wave component from the digital signal; a sampling point detection circuit (35a) for detecting a sampling point from the main wave component; an MSK demodulator (34a) for reproducing and demodulating a symbol point based on detection information by an interpolation process; and a parallel/series converter (26) for restoring an original signal from the demodulated signal.
摘要翻译：传输装置（10）包括：串联/并行转换器（11）; 用于在信道基础上调制信号的MSK调制器（31） D / A转换器（13）; 用于转换成不同载波频率的变频器（14a）; 同步电路（32）; 放大器（15）; 多路复用器（16），用于复用放大信号; 和天线（19）。接收装置（20）包括：天线（21）; 解复用器（22）; 变频器（23），用于将在信道上解复用的信号转换为基带频率; 用于去除信号的高次谐波分量的低通滤波器（33）; A / D转换器（24）; 数字滤波器（36），用于从数字信号中提取主波分量; 用于从主波分量检测采样点的采样点检测电路（35a）; 用于通过内插处理基于检测信息再现和解调符号点的MSK解调器（34a）; 和用于从解调信号中恢复原始信号的并行/串联转换器（26）。

2. 发明申请

US20100054357A1 RADIO COMMUNICATION SYSTEM 有权
标题翻译：无线电通信系统
公开(公告)号：US20100054357A1
公开(公告)日：2010-03-04
申请号：US12529346
申请日：2008-03-04
申请人： Akinori Fujimura , Yasushi Sogabe , Fumio Ishizu , Tadashi Takagi , Hiroyuki Nakase , Kazuo Tsubouchi , Suguru Kameda , Shoichi Oshima
发明人： Akinori Fujimura , Yasushi Sogabe , Fumio Ishizu , Tadashi Takagi , Hiroyuki Nakase , Kazuo Tsubouchi , Suguru Kameda , Shoichi Oshima
IPC分类号： H04L27/28
CPC分类号： H04L27/2637 , H04L27/2014 , H04L27/2614 , H04L27/2653 , H04L27/2662 , H04L27/2691
摘要： A transmission device (10) includes: a series/parallel converter (11); an MSK modulator (31) for modulating a signal on a channel basis; a D/A converter (13); a frequency converter (14a) for conversion into different carrier frequencies; a synchronization circuit (32); an amplifier (15); a multiplexer (16) for multiplexing amplification signals; and an antenna (19). A reception device (20) includes: an antenna (21); a demultiplexer (22); a frequency converter (23) for converting signal demultiplexed on a channel basis into a baseband frequency; a low-pass filter (33) for removing a higher-harmonic component of the signal; an A/D converter (24); a digital filter (36) for extracting a main wave component from the digital signal; a sampling point detection circuit (35a) for detecting a sampling point from the main wave component; an MSK demodulator (34a) for reproducing and demodulating a symbol point based on detection information by an interpolation process; and a parallel/series converter (26) for restoring an original signal from the demodulated signal.
摘要翻译：传输装置（10）包括：串联/并行转换器（11）; 用于在信道基础上调制信号的MSK调制器（31） D / A转换器（13）; 用于转换成不同载波频率的变频器（14a）; 同步电路（32）; 放大器（15）; 多路复用器（16），用于复用放大信号; 和天线（19）。接收装置（20）包括：天线（21）; 解复用器（22）; 变频器（23），用于将在信道上解复用的信号转换为基带频率; 用于去除信号的高次谐波分量的低通滤波器（33）; A / D转换器（24）; 数字滤波器（36），用于从数字信号中提取主波分量; 用于从主波分量检测采样点的采样点检测电路（35a）; 用于通过内插处理基于检测信息再现和解调符号点的MSK解调器（34a）; 和用于从解调信号中恢复原始信号的并行/串联转换器（26）。

3. 发明授权

US06891906B1 Demodulator, clock recovery circuit, demodulation method and clock recovery method 失效
标题翻译：解调器，时钟恢复电路，解调方法和时钟恢复方法
公开(公告)号：US06891906B1
公开(公告)日：2005-05-10
申请号：US09150011
申请日：1998-09-09
申请人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
发明人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
IPC分类号： H03M5/12 , H04L7/027 , H04L25/49 , H03D1/00
CPC分类号： H03M5/12
摘要： A demodulator is constituted by: a clock recovery circuit for generating a recovered clock from the series of received data and outputting the recovered clock; a state estimation circuit for making an estimation about a reception state such as waveform distortion or the like from the series of received data, and outputting waveform information based on the result of the estimation; and a correlator for correcting a reference and/or sample points on the basis of the recovered clock and the waveform information, obtaining a correlation value between the series of received data and the reference from a plurality of the sample points, and outputting demodulated data on the basis of the correlation value.
摘要翻译：解调器由以下部件构成：时钟恢复电路，用于从所述一系列接收数据产生恢复的时钟并输出恢复时钟; 状态估计电路，用于从所述一系列接收数据中对诸如波形失真等的接收状态进行估计，并且基于所述估计结果来输出波形信息; 以及相关器，用于基于恢复的时钟和波形信息来校正参考和/或采样点，从多个采样点获得所接收的数据序列与参考之间的相关值，并且输出解调数据相关值的基础。

4. 发明申请

US20100135424A1 COMMUNICATION APPARATUS 审中-公开
标题翻译：通讯设备
公开(公告)号：US20100135424A1
公开(公告)日：2010-06-03
申请号：US12602106
申请日：2008-03-10
申请人： Tsutomu Usui , Fumio Ishizu , Yasushi Sogabe , Tsuyoshi Tominaga
发明人： Tsutomu Usui , Fumio Ishizu , Yasushi Sogabe , Tsuyoshi Tominaga
IPC分类号： H04K1/10
CPC分类号： H04B7/06 , H04L5/0007 , H04L5/003 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04L7/0091 , H04L7/04 , H04L27/2601
摘要： A communication apparatus includes: a plurality of antennas; a pre-processing unit that, according to an instruction from a higher-level layer, performs processing on each zone generated by time-division of a transmission frame and generates a transmitting signal; and post-processing units that transmit the transmitting signal generated corresponding to each zone via one or more of the antennas. Each post-processing unit includes transmission of a preamble via each of the antennas. Thus, each post-processing unit transmits the preamble in a format that enables a receiving side to correctly determine AGC power control amount.
摘要翻译：通信装置包括：多个天线; 预处理单元，根据来自上级层的指示，对通过发送帧的时分生成的每个区域进行处理，生成发送信号; 以及后处理单元，其经由一个或多个天线发送对应于每个区域生成的发送信号。每个后处理单元包括经由每个天线的前导码的传输。因此，每个后处理单元以能够使接收侧正确地确定AGC功率控制量的格式发送前导码。

5. 发明授权

US5977820A Phase estimating circuit and demodulating circuit 失效
标题翻译：相位估计电路和解调电路
公开(公告)号：US5977820A
公开(公告)日：1999-11-02
申请号：US47416
申请日：1998-03-25
申请人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
发明人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
IPC分类号： H04L27/22 , H04L7/00 , H04L7/027 , H03D3/00 , H04L27/38
CPC分类号： H04L7/027
摘要： The presence or absence of a clock component is detected for an input signal. If the input signal does not comprise a clock component, the operation of a computing circuit is halted, thereby further improving the accuracy of phase estimation. A signal generating circuit produces a twiddle factor for DFT. A DFT circuit performs discrete Fourier transform on an input signal for a predetermined number of symbols based on the twiddle factor for DFT. A pattern detecting circuit examines the input signal for its pattern based on the output from the DFT circuit. An averaging filter turns on or off the operation of the subsequent averaging filter according to the detected pattern, and averages the outputs from the DFT circuit to remove a noise component.
摘要翻译：检测到输入信号是否存在时钟分量。如果输入信号不包括时钟分量，则停止计算电路的操作，从而进一步提高相位估计的精度。信号发生电路为DFT产生旋转因子。 DFT电路基于用于DFT的旋转因子对预定数量的符号对输入信号执行离散傅里叶变换。模式检测电路根据DFT电路的输出检查其模式的输入信号。平均滤波器根据检测到的模式打开或关闭随后的平均滤波器的操作，并平均来自DFT电路的输出以去除噪声分量。

6. 发明授权

US08346161B2 Satellite communication system 有权
标题翻译：卫星通信系统
公开(公告)号：US08346161B2
公开(公告)日：2013-01-01
申请号：US12301349
申请日：2007-05-15
申请人： Yasushi Sogabe , Akinori Fujimura , Takashi Kuwahara , Futaba Ejima
发明人： Yasushi Sogabe , Akinori Fujimura , Takashi Kuwahara , Futaba Ejima
IPC分类号： H04B7/185
CPC分类号： H04B7/18515 , H04B7/2045
摘要： When a transmission request for new data is issued under a situation where a plurality of data are transmitted to a specific service area from a plurality of service areas, a feeder link station searches an available frequency to be allocated to the new data in a down-link frequency band of the specific service area, and when any of data communications is completed, allocates a down-link frequency band used in the data communication as a down-link frequency band for the new data. A satellite repeater arranges the new data on the down-link frequency band right after the data communication is completed following a relay control by the feeder link station.
摘要翻译：当在多个服务区域将多个数据发送到特定服务区域的情况下发出新数据的发送请求时，馈线链路站以下行方式搜索要分配给新数据的可用频率，特定服务区域的链路频带，并且当数据通信中的任何一个完成时，将在数据通信中使用的下行链路频带分配为新数据的下行链路频带。卫星转发器在通过馈线链路站的继电器控制完成数据通信之后立即将新数据布置在下行链路频带上。

7. 发明授权

US08542785B2 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：US08542785B2
公开(公告)日：2013-09-24
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： H03D1/04
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 digital beam forming (DBF) network that generates a reception beam signal for forming M reception beams using a reception signal, and reception filter banks (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：可以抑制电路尺寸增加并减少干扰影响的通信装置包括接收阵列天线元件，使用接收信号产生用于形成M个接收波束的接收波束信号的接收数字波束形成（DBF）网络，以及接收滤波器组（FB），其生成通过对接收波束信号进行分频而获得的频率分割接收波束信号。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。

8. 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。

9. 发明申请

US20090191810A1 SATELLITE COMMUNICATION SYSTEM 有权
标题翻译：卫星通信系统
公开(公告)号：US20090191810A1
公开(公告)日：2009-07-30
申请号：US12301349
申请日：2007-05-15
申请人： Yasushi Sogabe , Akinori Fujimura , Takashi Kuwahara , Futaba Ejima
发明人： Yasushi Sogabe , Akinori Fujimura , Takashi Kuwahara , Futaba Ejima
IPC分类号： H04B7/185
CPC分类号： H04B7/18515 , H04B7/2045
摘要： When a transmission request for new data is issued under a situation where a plurality of data are transmitted to a specific service area from a plurality of service areas, a feeder link station searches an available frequency to be allocated to the new data in a down-link frequency band of the specific service area, and when any of data communications is completed, allocates a down-link frequency band used in the data communication as a down-link frequency band for the new data. A satellite repeater arranges the new data on the down-link frequency band right after the data communication is completed following a relay control by the feeder link station.
摘要翻译：当在多个服务区域将多个数据发送到特定服务区域的情况下发出新数据的发送请求时，馈线链路站以下行方式搜索要分配给新数据的可用频率，特定服务区域的链路频带，并且当数据通信中的任何一个完成时，将在数据通信中使用的下行链路频带分配为新数据的下行链路频带。卫星转发器在通过馈线链路站的继电器控制完成数据通信之后立即将新数据布置在下行链路频带上。

10. 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。

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