公开(公告)号：US20150381266A1

公开(公告)日：2015-12-31

申请号：US14767790

申请日：2013-02-14

申请人： Akinori FUJIMURA

发明人： Akinori FUJIMURA

IPC分类号： H04B7/185 ,  H04B15/00

CPC分类号： H04B7/18513 ,  H04B3/36 ,  H04B7/18515 ,  H04B7/2041 ,  H04B7/2045 ,  H04B15/00

摘要： A relay apparatus includes a reception analog filter that extracts a desired signal from a received signal, an A/D converter that converts the signal after passage through the reception analog filter into a digital signal, a demultiplexing unit that demultiplexes the digital signal converted by the A/D converter into m signals, a reception-side compensating unit that digitally compensates for an analog characteristic of the reception analog filter with respect to the m signals demultiplexed by the demultiplexing unit, and a multiplexing unit that multiplexes the m signals digitally compensated by the reception-side compensating unit. The reception-side compensating unit further demultiplexes each of x signals not sufficiently compensated among the digitally-compensated m signals into k signals, digitally compensates for the analog characteristic of the reception analog filter, and multiplexes the k signals after the digital compensation.

摘要翻译： 中继装置包括从接收信号中提取期望信号的接收模拟滤波器，将经过接收模拟滤波器之后的信号转换为数字信号的A / D转换器，对由该接收信号转换的数字信号进行解复用的解复用单元 A / D转换器转换成m个信号;接收侧补偿单元，相对于由解复用单元解复用的m个信号数字地补偿接收模拟滤波器的模拟特性;以及多路复用单元，对由m个信号进行数字补偿的m个信号进行多路复用， 接收侧补偿单元。 接收侧补偿单元还将经数字补偿的m个信号中的未充分补偿的x个信号中的每一个解复用为k个信号，对接收模拟滤波器的模拟特性进行数字补偿，并在数字补偿之后复用k个信号。

公开(公告)号：US09136933B2

公开(公告)日：2015-09-15

申请号：US13818578

申请日：2011-08-22

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B7/15 ,  H04J1/05 ,  H04B7/155

CPC分类号： H04B7/15 ,  H04B7/155 ,  H04J1/05

摘要： A demultiplexing apparatus includes: a demultiplexed-signal selecting and distributing unit configured to apply frequency conversion processing and down-sampling processing to one or more reception signals and output reception signals to a designated output destination; frequency converting and reception low-pass filter units configured to apply frequency conversion processing and low-pass filter processing to reception signals and output reception signals while down-sampling reception signals; selector units configured to switch an input source of a signal output to the frequency converting and reception low-pass filter unit at a next stage; reception-channel filter units configured to subject signals from the frequency converting and reception low-pass filter units to waveform shaping with a desired frequency characteristic and output the signals; and a filter-bank control unit configured to generate, based on channel information estimated from one or more reception signals, a control signal controlling the demultiplexed-signal selecting and distributing unit and the selector units.

摘要翻译： 解复用装置包括：解复用信号选择和分配单元，被配置为对一个或多个接收信号进行频率转换处理和下采样处理，并将接收信号输出到指定的输出目的地; 频率转换和接收低通滤波器单元，被配置为对接收信号进行频率转换处理和低通滤波处理，并且在对采样信号进行下采样时输出接收信号; 选择器单元，被配置为在下一级将输出的信号的输入源切换到频率转换和接收低通滤波器单元; 接收通道滤波器单元，被配置为使来自频率转换和接收低通滤波器单元的信号以期望的频率特性进行波形整形并输出信号; 以及滤波器组控制单元，被配置为基于从一个或多个接收信号估计的信道信息生成控制解复用信号选择和分配单元和选择器单元的控制信号。

公开(公告)号：US08731123B2

公开(公告)日：2014-05-20

申请号：US13511893

申请日：2010-11-18

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B1/10

CPC分类号： H03H17/0266 ,  H03H17/06 ,  H04J1/05 ,  H04J1/08 ,  H04J1/085

摘要： A demultiplexing device that includes frequency-conversion and reception low-pass-filter units that perform a frequency converting process and a low-pass filtering process for causing a signal to pass through a desired band, perform downsampling to reduce a sampling rate to half of a data rate of an input signal, and output the signal, reception channel-filter units that waveform-shape a signal with a desired frequency characteristic and output the waveform-shaped signal. The demultiplexing device also includes a filter-bank control unit that generates a clock control signal for supplying a clock to frequency-conversion and reception low-pass-filter units and reception channel-filter units corresponding to signal passage bands, based on channel information, and a reception-clock supply unit that supplies a clock to frequency-conversion and reception low-pass-filter units and reception channel-filter units corresponding to signal passage bands, based on the clock control signal.

摘要翻译： 一种解复用器件，其包括执行频率转换处理的频率转换和接收低通滤波器单元，以及用于使信号通过期望频带的低通滤波处理，执行下采样以将采样率降低到 输入信号的数据速率，并输出信号，使具有期望频率特性的信号波形形状的接收通道滤波器单元，并输出波形状信号。 解复用装置还包括滤波器组控制单元，其基于信道信息生成用于向频率转换和接收低通滤波器单元以及对应于信号通过频带的接收信道滤波器单元提供时钟的时钟控制信号， 以及接收时钟提供单元，其基于时钟控制信号将时钟提供给频率转换和接收低通滤波器单元以及对应于信号通过频带的接收信道滤波器单元。

公开(公告)号：US20140036765A1

公开(公告)日：2014-02-06

申请号：US14111652

申请日：2012-04-24

申请人： Akinori Fujimura ,  Kyoichiro Izumi ,  Toshiyuki Kuze

发明人： Akinori Fujimura ,  Kyoichiro Izumi ,  Toshiyuki Kuze

IPC分类号： H04B7/185

CPC分类号： H04B7/18578 ,  H04B7/18515 ,  H04B7/2041

摘要： A relay satellite includes reception antennas, reception processing units, transmission processing units, transmission antennas, a reception analog switch matrix unit that outputs a signal received by the reception antenna to one or more of the reception processing units, a digital switch matrix unit that outputs digital reception signals obtained by reception processing performed by the reception processing units to one or more of the transmission processing units, and a transmission analog switch matrix unit that outputs analog signals obtained by transmission processing performed by the transmission processing units to one of the transmission antennas. The reception analog switch matrix unit outputs a broadband reception signal to the reception processing units when a reception signal having a band broader than a band processable by the reception processing unit is inputted, and the reception processing unit performs reception processing on a part of a band when the broadband signal is inputted.

摘要翻译： 中继卫星包括接收天线，接收处理单元，发送处理单元，发送天线，将接收天线接收到的信号输出到一个或多个接收处理单元的接收模拟开关矩阵单元，输出的数字开关矩阵单元 通过由接收处理单元对一个或多个发送处理单元进行的接收处理而获得的数字接收信号，以及发送模拟开关矩阵单元，其将由发送处理单元进行的发送处理而获得的模拟信号输出到发送天线 。 当具有比由接收处理单元处理的频带宽的频带的接收信号被输入时，接收模拟开关矩阵单元向接收处理单元输出宽带接收信号，并且接收处理单元对频带的一部分进行接收处理 当宽带信号被输入时。

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。

公开(公告)号：US08462875B2

公开(公告)日：2013-06-11

申请号：US12505687

申请日：2009-07-20

申请人： Keishi Takeda ,  Akinori Fujimura

发明人： Keishi Takeda ,  Akinori Fujimura

IPC分类号： H04L27/00 ,  H04J3/06 ,  H04B15/00

CPC分类号： H04B1/7085 ,  H04B1/7075

摘要： A timing regenerating device regenerates a process timing for demodulating a reception signal in a spread spectrum communication system. The timing regenerating device includes a signal extracting unit that extracts a baseband signal from the reception signal on which an inverse spread processing is performed and a reference clock generating unit that converts the baseband signal into an electric power and generates a reference clock for a latch timing of the baseband signal output from the signal extracting unit based on the electric power.

摘要翻译： 定时再生装置对扩频通信系统中的接收信号进行解调处理定时。 定时再生装置包括：信号提取单元，从执行逆扩展处理的接收信号中提取基带信号;以及基准时钟生成单元，其将基带信号转换为电力，并生成用于锁存定时的基准时钟 基于电力从信号提取单元输出的基带信号。

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）。

公开(公告)号：US20110243117A1

公开(公告)日：2011-10-06

申请号：US13159100

申请日：2011-06-13

申请人： Yukimasa NAGAI ,  Akinori Fujimura ,  Hiroaki Hirai ,  Hiroyoshi Suga

发明人： Yukimasa NAGAI ,  Akinori Fujimura ,  Hiroaki Hirai ,  Hiroyoshi Suga

IPC分类号： H04W4/00

CPC分类号： H04W28/06 ,  H04L1/1685 ,  H04W84/12

摘要： A combination-information creating unit creates combination information for determining a maximum number of combinations or a maximum frame length according to a usable radio band and a modulation method and combination possibility information for indicating that a combination of frames is possible. A frame combining unit combines a plurality of frames received from an outside access line, based on the combination information, the combination possibility information, and predetermined packet information. A frame dividing unit divides a combined frame included in a received radio signal into individual frames.

摘要翻译： 组合信息创建单元根据可用的无线电频段以及用于指示帧的组合是可能的调制方法和组合可能性信息来创建用于确定最大组合数或最大帧长度的组合信息。 帧组合单元基于组合信息，组合可能性信息和预定分组信息组合从外部接入线路接收的多个帧。 帧划分单元将接收到的无线电信号中包括的组合帧划分成单个帧。

公开(公告)号：US20060046731A1

公开(公告)日：2006-03-02

申请号：US10525069

申请日：2004-06-15

申请人： Hiroaki Hirai ,  Akinori Fujimura ,  Yukimasa Nagai ,  Yosikatu Tajima ,  Mari Otiai

发明人： Hiroaki Hirai ,  Akinori Fujimura ,  Yukimasa Nagai ,  Yosikatu Tajima ,  Mari Otiai

IPC分类号： H04Q7/20

CPC分类号： H04W24/00 ,  H04L1/0002 ,  H04L1/0016 ,  H04W74/00

摘要： A reception processing unit measures reception states of input reception signals of each of a plurality of channels, generates local channel reception information, and applies a reception processing to the input reception signals to generate decoded signals. A media-access-control unit generates transmission frames for each of the channels using transmission data. A transmission processing unit generates radio signals including each of the transmission frames. A channel-information processing unit generates local feedback information, and inserts the local feedback information generated into at least one of the radio signals that are transmitted by the radio communication apparatus.

摘要翻译： 接收处理单元测量多个信道中的每一个的输入接收信号的接收状态，产生本地信道接收信息，并且对输入的接收信号应用接收处理以产生解码信号。 媒体访问控制单元使用传输数据生成每个频道的传输帧。 传输处理单元生成包括每个传输帧的无线电信号。 信道信息处理单元生成本地反馈信息，并将生成的本地反馈信息插入由无线通信装置发送的至少一个无线信号。

公开(公告)号：US6104762A

公开(公告)日：2000-08-15

申请号：US212262

申请日：1998-12-16

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B7/08 ,  H04L1/02 ,  H04L1/06 ,  H04L7/00 ,  H04L7/033 ,  H04L7/04 ,  H04L7/10 ,  H04L27/22 ,  H04L27/14

CPC分类号： H04B7/0894 ,  H04B7/0817 ,  H04B7/0848 ,  H04L1/06 ,  H04L27/22 ,  H04L7/0334 ,  H04B7/0828 ,  H04L7/04

摘要： The timing recovery apparatus and the diversity communication apparatus using the same realizes a high-speed timing phase pull-in characteristic and a low-jitter characteristic at the time of power-on sequence, recovery from line disconnection and the like. The apparatuses also prevent the bit error rate characteristic and synchronization characteristic from being deteriorated by signal delay time difference. A received PSK signal is X-times oversampled. From received phase data sequences Y.sub.i obtained by the X-times oversampling, a data sequence including j symbol frequency components not affected by carrier frequency deviation is extracted by signal processing including simple adding and subtracting operations. The data sequence including j symbol frequency components is synthesized to provide two data sequences including symbol frequency components having a good S/N ratio with .pi./4 phase difference in radian and not affected by carrier frequency deviation. Further, a data sequence including two symbol frequency components is used for timing regeneration.

摘要翻译： 定时恢复装置和使用该定时恢复装置的分集通信装置实现了上电顺序时的高速定时相位拉入特性和低抖动特性，线断开恢复等。 这些装置还防止误码率特性和同步特性被信号延迟时间差恶化。 接收到的PSK信号是X次过采样。 从通过X次过采样获得的接收相位数据序列Yi，通过包括简单加法和减法运算在内的信号处理提取包括不受载波频率偏差影响的j个符号频率分量的数据序列。 合成包括j个符号频率分量的数据序列，以提供包括具有良好S / N比的符号频率分量的两个数据序列，其中pi / 4相位差为弧度，不受载波频率偏差的影响。 此外，包括两个符号频率分量的数据序列用于定时再生。