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。

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。

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。

公开(公告)号：US20070155393A1

公开(公告)日：2007-07-05

申请号：US11715870

申请日：2007-03-09

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：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。

公开(公告)号：US20120314824A1

公开(公告)日：2012-12-13

申请号：US13580738

申请日：2011-02-24

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B1/10

CPC分类号： H04B1/1036 ,  H04B7/15542

摘要： An interference wave suppressing apparatus includes a digital demultiplexing unit configured to demultiplex a reception signal into demultiplexed signals having predetermined bandwidth, an interference-wave detecting unit configured to determine, for each of the demultiplexed signals, based on a power value, whether an interference wave is present, an interference-wave suppressing unit configured to change a signal value of the demultiplexed signal, in which the interference-wave detecting unit determines that an interference wave is present, to a value equal to or smaller than a predetermined value, output the demultiplexed signal, and output the demultiplexed signal, in which the interference-wave detecting unit determines that an interference wave is absent, and a digital multiplexing unit configured to multiplex the signals output from the interference-wave suppressing unit.

摘要翻译： 干扰波抑制装置包括：数字解复用单元，被配置为将接收信号解复用为具有预定带宽的解复用信号;干扰波检测单元，被配置为基于功率值确定每个解复用信号中的干扰波 存在干扰波抑制单元，其被配置为将干扰波检测单元确定存在干扰波的解复用信号的信号值改变为等于或小于预定值的值，输出 并且输出解复用信号，其中干扰波检测单元确定不存在干扰波;以及数字多路复用单元，被配置为对从干扰波抑制单元输出的信号进行复用。

公开(公告)号：US20120269238A1

公开(公告)日：2012-10-25

申请号：US13511893

申请日：2010-11-18

申请人： Akinori Fujimura

发明人： Akinori Fujimura

IPC分类号： H04B15/00 ,  H04B7/14 ,  H04B1/10

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

摘要： A demultiplexing device that can reduce power consumption. The demultiplexing device includes frequency-conversion and reception low-pass-filter units that perform a frequency converting process and a low-pass filtering process 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, 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： 一种能够降低功耗的解复用器件。 解复用装置包括频率转换和接收低通滤波器单元，其执行频率转换处理和低通滤波处理，使得信号通过期望频带，执行下采样以将采样率降低到数据的一半 输出信号，并输出该信号，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;滤波器组控制单元，其产生用于提供波形形状信号的时钟控制信号 基于信道信息的时钟到频率转换和接收低通滤波器单元和对应于信号通过频带的接收信道滤波器单元，以及将时钟提供给频率转换和接收低通的接收时钟提供单元 - 滤波器单元和对应于信号通过频带的接收信道滤波器单元，基于时钟控制信号。