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71. 发明申请

US20100220808A1 RADIO TRANSMISSION DEVICE, RADIO RECEPTION DEVICE, RADIO TRANSMISSION METHOD, AND RADIO RECEPTION METHOD 有权
标题翻译：无线电传输装置，无线电接收装置，无线电传输方法和无线电接收方法
公开(公告)号：US20100220808A1
公开(公告)日：2010-09-02
申请号：US12377362
申请日：2007-11-29
申请人： Takaaki Kishigami , Hidenori Kayama
发明人： Takaaki Kishigami , Hidenori Kayama
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L25/0232 , H04L5/0023 , H04L5/0048
摘要： It is possible to provide a radio reception device, a radio transmission device, a radio reception method, and a radio transmission method which can improve the channel estimation accuracy and the reception quality. The radio reception device (200) includes: reception units (203, 204) which receive a data sequence added by a reference signal for channel estimation of a spatial propagation path at a predetermined interval; demodulation units (205, 206) which demodulate the data sequence; a channel estimation unit (208) which estimates a propagation path fluctuation state according to the reference signal in the data sequence and outputs a channel estimation value obtained by interpolating or extrapolating the data sequence; and a decoding processing unit (210) which decodes the data sequence by using the interpolated or extrapolated channel estimation value.
摘要翻译：可以提供能够提高信道估计精度和接收质量的无线接收装置，无线发送装置，无线接收方法以及无线发送方法。无线电接收装置（200）包括：接收单元（203,204），其以预定间隔接收由参考信号添加的用于信道估计的空间传播路径的数据序列; 解调单元（205,206），其解调所述数据序列; 信道估计单元，根据数据序列中的参考信号估计传播路径波动状态，并输出通过内插或外推数据序列获得的信道估计值; 以及解码处理单元，其通过使用内插或外插的信道估计值对数据序列进行解码。

72. 发明申请

US20100104044A1 RADIO TRANSMISSION DEVICE AND RADIO RECEPTION DEVICE 有权
标题翻译：无线电传输装置和无线电接收装置
公开(公告)号：US20100104044A1
公开(公告)日：2010-04-29
申请号：US12532165
申请日：2008-03-21
申请人： Takaaki Kishigami , Shozo Okasaka , Yutaka Murakami
发明人： Takaaki Kishigami , Shozo Okasaka , Yutaka Murakami
IPC分类号： H04L1/02 , H04L27/00
CPC分类号： H04L27/2628 , H04L27/2614
摘要： Provided is a radio transmission device (100) which can flexibly cope with a request for assuring an error ratio feature during a high transmission rate, a request for increasing a cell coverage, or the like. The radio transmission device (100) includes a first subcarrier modulation unit (104) which forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals into a frequency region; a second subcarrier modulation unit (105) which forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of signals; an IFFT unit (111) which forms an OFDM signal by performing inverse Fourier transform on the first and the second subcarrier modulation signal; and a subcarrier mapping unit (110) which controls allocation of the first and the second subcarrier modulation signals.
摘要翻译：提供一种无线传输装置（100），其可以灵活地应对在高传输速率期间确保错误率特征的请求，增加小区覆盖的请求等。无线发送装置（100）具有形成通过将多个调制信号变换为频率区域而获得的第一副载波调制信号的第一副载波调制部（104）形成通过并行转换多个信号而获得的第二子载波调制信号的第二副载波调制单元（105） IFFT单元（111），通过对第一和第二副载波调制信号进行逆傅立叶变换来形成OFDM信号; 以及控制第一和第二副载波调制信号的分配的副载波映射部（110）。

73. 发明申请

US20090279486A1 WIRELESS BASE STATION DEVICE, TERMINAL, AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线基站设备，终端和无线通信方法
公开(公告)号：US20090279486A1
公开(公告)日：2009-11-12
申请号：US11911165
申请日：2006-04-11
申请人： Takaaki Kishigami , Hidekuni Yomo
发明人： Takaaki Kishigami , Hidekuni Yomo
IPC分类号： H04W74/00
CPC分类号： H04B7/0695 , H04B7/0697 , H04W52/42
摘要： A wireless base station device includes a plurality of transmit weight generation sections and a beam selection section. The transmit weight generation sections generate pieces of transmit weight information used for spatial division multiplexing transmission according to different algorithms. The pieces of transmit weight information are generated based on channel information on a plurality of terminals each having one or more antennas with which the wireless base station device performs spatial division multiplexing transmission. The beam selection section selects one of the pieces of transmit weight information generated.
摘要翻译：无线基站装置包括多个发送权重生成部和波束选择部。发送权重生成部根据不同的算法生成用于空分多路传输的发送权重信息。发送权重信息是基于各自具有无线基站装置进行空分复用发送的一个以上的天线的多个终端的信道信息生成的。波束选择部选择生成的发送权重信息之一。

74. 发明申请

US20090125793A1 WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信设备和无线通信方法
公开(公告)号：US20090125793A1
公开(公告)日：2009-05-14
申请号：US12300301
申请日：2007-05-17
申请人： Takaaki Kishigami , Hirohito Mukai , Shutai Okamura
发明人： Takaaki Kishigami , Hirohito Mukai , Shutai Okamura
IPC分类号： H03M13/03 , G06F11/00 , H04L27/00
CPC分类号： H04L25/03324 , H04B17/373 , H04L1/005 , H04L25/0328 , H04L25/03318 , H04L27/2647
摘要： The invention is embodied for solving a problem of occurrence of degradation of the reception characteristic caused by the interference signal component if a symbol making a determination error is contained or if an error factor caused by a propagation channel estimation error or a hardware error (carrier frequency error, sampling frequency error) is contained at the interference canceling time in a wireless communication apparatus for iteratively decoding and receiving a spatial multiplex signal. A wireless communication apparatus 100 according to the invention has an error estimator 13 for estimating an error of a replica signal at the interference canceling time and a weighter 14 for weighting likelihood information for a spatial multiplex signal separated and combined after interference is canceled based on output of the error estimator 13, whereby if an error of the replica signal at the interference canceling time is contained, a good reception characteristic can be provided.
摘要翻译：本发明具体实施用于解决由干扰信号分量引起的接收特性劣化的发生问题，如果包含确定误差的符号或者由传播信道估计误差或硬件误差引起的误差因子（载波频率误差，采样频率误差）被包含在用于迭代地解码和接收空间复用信号的无线通信装置中的干扰消除时间处。根据本发明的无线通信装置100具有用于估计干扰消除时间的复制信号的误差的误差估计器13和用于在干扰被抵消之后分离和组合的空间复用信号的加权似然信息的加权器14，基于输出由此，如果包含干扰消除时间的复制信号的误差，则可以提供良好的接收特性。

75. 发明授权

US07031719B2 Method of calculating exciting coefficients for circular array antenna and radio unit utilizing the same 失效
公开(公告)号：US07031719B2
公开(公告)日：2006-04-18
申请号：US09920984
申请日：2001-08-02
申请人： Kentaro Miyano , Takashi Fukagawa , Takaaki Kishigami , Makoto Hasegawa
发明人： Kentaro Miyano , Takashi Fukagawa , Takaaki Kishigami , Makoto Hasegawa
IPC分类号： H04Q7/20
CPC分类号： H01Q1/246 , H01Q3/26 , H01Q21/20
摘要： A method of calculating coefficients determining excitation amplitudes and phases for obtaining a desired antenna pattern of a circular array antenna comprising a plurality of antenna elements disposed circularly. Coefficients for a linear array antenna having the same number of antenna elements as the circular array antenna are determined by a Fourier series expansion in integral limits calculated from a beam direction and a beam width that are estimated from incoming radio waves and then are transformed into the coefficients for the circular array antenna. With this method, the beam direction and the beam width of the antenna pattern of the circular array antenna can be set at will. Consequently, this method enables adaptive control of sectored beams of sectored antennas at a base station or the like used for a mobile communication system, thus enhancing efficiency of the use of the antennas.

76. 发明授权

US06836245B2 Radio-wave arrival-direction estimating apparatus and directional variable transceiver 有权
标题翻译：无线电波到达方向估计装置和方向可变收发器
公开(公告)号：US06836245B2
公开(公告)日：2004-12-28
申请号：US10635411
申请日：2003-08-06
申请人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
发明人： Takaaki Kishigami , Takashi Fukagawa , Yasuaki Yuda , Masayuki Hoshino
IPC分类号： G01S502
CPC分类号： G06K9/0057 , G01S3/74
摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring an angle sweep for arrival angle estimation of MUSIC method or the like.

77. 发明授权

US06529745B1 Radio wave arrival direction estimating antenna apparatus 有权
标题翻译：无线电波到达方向估计天线装置
公开(公告)号：US06529745B1
公开(公告)日：2003-03-04
申请号：US09413367
申请日：1999-10-06
申请人： Takashi Fukagawa , Youichi Nakagawa , Takaaki Kishigami , Makoto Hasegawa , Hiroyuki Tsuji
发明人： Takashi Fukagawa , Youichi Nakagawa , Takaaki Kishigami , Makoto Hasegawa , Hiroyuki Tsuji
IPC分类号： G01S328
CPC分类号： G01S3/74 , G01S3/14
摘要： A mobile station transmitted signal received at array antenna 11 is converted into an intermediate frequency signal in frequency conversion section 12, and converted into a digital signal in analog-digital conversion section 13. Arrival direction estimating section 15 estimates the number of mobile stations and directions thereof by processing the digital signal. Arrival direction tracking section 16 estimates a direction of a mobile station by sequential processing using an estimated result in arrival direction estimating section 15. Beam forming means 17 forms an antenna radiation beam to a direction of the estimated result in arrival direction tracking section 16.
摘要翻译：在阵列天线11处接收的移动台发送信号在频率转换部分12中被转换成中频信号，并在模拟数字转换部分13中转换为数字信号。到达方向估计部分15估计移动台的数量和方向通过处理数字信号。到达方向跟踪部分16通过使用到达方向估计部分15中的估计结果的顺序处理来估计移动台的方向。波束形成装置17对到达方向跟踪部分16的估计结果的方向形成天线辐射束。

78. 发明授权

US5986720A Mobile television receiver 失效
标题翻译：移动电视接收机
公开(公告)号：US5986720A
公开(公告)日：1999-11-16
申请号：US845442
申请日：1997-04-25
申请人： Takaaki Kishigami , Masahiro Mimura , Makoto Hasegawa , Masahiko Nakamura , Yoshinori Takagi , Masanobu Kanaya
发明人： Takaaki Kishigami , Masahiro Mimura , Makoto Hasegawa , Masahiko Nakamura , Yoshinori Takagi , Masanobu Kanaya
IPC分类号： H04N5/21 , H04N5/44 , H04N21/414 , H04N21/442 , H04N5/455
CPC分类号： H04N5/44 , H04N21/41407 , H04N21/44209 , H04N5/21
摘要： A mobile television receiver includes a TV tuner demodulating an incoming TV signal into a first video signal. A first horizontal sync signal is separated from the first video signal. Detection is made as to a quality of an image represented by the first video signal. A second horizontal sync signal is generated. Detection is made as to a difference between a phase of the first horizontal sync signal and a phase of the second horizontal sync signal. The phase of the second horizontal sync signal is controlled in response to the detected phase difference between the first horizontal sync signal and the second horizontal sync signal so that the second horizontal sync signal will be locked in phase and frequency to the first horizontal sync signal. A memory unit stores the first video signal in response to a memory control signal, and outputs the stored first video signal as a second video signal. The memory control signal is generated in response to the detected image quality. The second video signal is displayed in response to the second horizontal sync signal.
摘要翻译：移动电视接收机包括将输入的TV信号解调为第一视频信号的TV调谐器。第一水平同步信号与第一视频信号分离。对由第一视频信号表示的图像的质量进行检测。产生第二水平同步信号。检测第一水平同步信号的相位与第二水平同步信号的相位之差。响应于第一水平同步信号和第二水平同步信号之间检测到的相位差来控制第二水平同步信号的相位，使得第二水平同步信号将以相位和频率锁定到第一水平同步信号。存储单元响应于存储器控制信号存储第一视频信号，并将所存储的第一视频信号作为第二视频信号输出。响应于检测到的图像质量而产生存储器控制信号。响应于第二水平同步信号显示第二视频信号。

79. 发明授权

US5781588A FSK signal receiver 失效
公开(公告)号：US5781588A
公开(公告)日：1998-07-14
申请号：US548373
申请日：1995-11-01
申请人： Katsuaki Abe , Takaaki Kishigami , Masahiro Mimura , Makoto Hasegawa , Katsushi Yokozaki , Yoichi Yamaki , Toshiyuki Tsumura , Hiroshi Katayama
发明人： Katsuaki Abe , Takaaki Kishigami , Masahiro Mimura , Makoto Hasegawa , Katsushi Yokozaki , Yoichi Yamaki , Toshiyuki Tsumura , Hiroshi Katayama
IPC分类号： H03G3/20 , H04L25/06 , H04L27/14
CPC分类号： H03G3/3068 , H04L25/061
摘要： An FSK signal receiver includes an amplifier which amplifies a first FSK signal at an adjustable gain. A frequency converter converts an output signal from the amplifier into a second FSK signal having a frequency lower than a frequency of the first FSK signal. A demodulator demodulates the second FSK signal into a baseband signal. A bit-state detector detects a bit state from the baseband signal in response to a threshold. A calculator calculates a number of times of occurrence of a fact that the baseband signal moves across the threshold during a given time. The gain of the amplifier is adjusted in response to the number of times which is calculated by the calculator.

80. 发明授权

US09124913B2 Wireless communication device and wireless communication method 有权
标题翻译：无线通信设备和无线通信方式
公开(公告)号：US09124913B2
公开(公告)日：2015-09-01
申请号：US13635513
申请日：2011-03-08
申请人： Takaaki Kishigami , Daichi Imamura , Isamu Yoshii
发明人： Takaaki Kishigami , Daichi Imamura , Isamu Yoshii
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N21/2662 , H04N21/442 , H04N21/658 , H04N19/114 , H04N19/152 , H04N19/164
CPC分类号： H04N21/2662 , H04N19/114 , H04N19/152 , H04N19/164 , H04N21/44209 , H04N21/6582
摘要： As a parameter control unit that controls video encoding parameters regarding video encoding in a video encoding unit and transmission channel parameters regarding error correction coding and modulation in a channel coding/modulation unit so as to be linked to each other, a cross layer rate control unit is provided. The cross layer rate control unit performs variable control of the GOP size according to propagation changes by reducing the GOP size when the amount of change in the predicted value of the PHY transmission rate is larger than a determined amount of change and increasing the GOP size when the amount of change in the predicted value of the PHY transmission rate is equal to or less than the determined amount of change.
摘要翻译：作为控制视频编码单元中的视频编码的视频编码参数的参数控制单元以及与频道编码/调制单元中的纠错编码和调制相关的传输信道参数，以便彼此链接，交叉层速率控制单元被提供。交叉层速率控制单元，当PHY传输速率的预测值的变化量大于确定的改变量时，通过减小GOP大小，根据传播变化来执行GOP大小的可变控制，并且当GOP传输速率 PHY传输速率的预测值的变化量等于或小于确定的改变量。

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