-
公开(公告)号：US20060193298A1
公开(公告)日：2006-08-31
申请号：US10565845
申请日：2004-07-26
IPC分类号： H04Q7/24
CPC分类号： H04W72/0453 , H04B7/01 , H04B7/0697 , H04L5/0023 , H04L5/0026 , H04L5/0028 , H04L5/0037 , H04L5/0044 , H04L5/0051 , H04L5/006 , H04W24/08 , H04W72/042 , H04W72/085
摘要： A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section (108) detects space multiplexing transmission adaptability for divided bands (DB-1 to DB-Nd) obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results (#1 to #Nd). Transmission format setting section (110) sets a transmission format when carrying out radio transmission based on the detection results (#1 to #Nd) from space multiplexing adaptability detection section (108).
摘要翻译： 一种无线电通信装置，其能够减轻设置发送格式的负担，并抑制装置的规模的增加。 在该装置中，空间复用适应性检测部（108）检测通过划分N个子载波信号属于多载波传输的通信频带而得到的划分频带（DB-1〜DB-Nd）的空间复用传输适应性， 子载波信号属于，并输出检测结果（＃1至#Nd）。 发送格式设定部（110）根据来自空间复用适应性检测部（108）的检测结果（＃1〜#Nd），进行无线发送时的发送格式。
-
42.发明申请Radio communication system, radio communication method, and radio communication device 有权无线电通信系统，无线电通信方法和无线电通信装置公开(公告)号：US20050265470A1
公开(公告)日：2005-12-01
申请号：US10524803
申请日：2003-12-05
申请人： Takaaki Kishigami , Yoichi Nakagawa
发明人： Takaaki Kishigami , Yoichi Nakagawa
CPC分类号： H04B7/0408
摘要： In the environment of a communication area including a SDM-compatible mobile station for space division multiplex transmission and a SDM-uncompatible mobile station not compatible with space division multiplex transmission, a base station having a plurality of antennas and capable of adaptively changing directivity performs allocation of a mobile station which simultaneously performs space division multiplex transmission (SDM) and space division multiplex access (SDMA) by using a predetermined space division multiplex transmission evaluation criterion and a space division multi access evaluation criterion. By using this radio communication method, it is possible to use the spatial degree of freedom at its maximum and provide a radio communication system having an improved communication capacity.
摘要翻译： 在包括用于空分复用传输的SDM兼容移动台和不兼容空分复用传输的SDM不兼容移动台的通信区域的环境中，具有多个天线并且能够自适应地改变方向性的基站执行分配 通过使用预定的空分复用传输评估标准和空分多址评估标准同时执行空分复用传输（SDM）和空分复用接入（SDMA）的移动台。 通过使用该无线通信方式，能够最大限度地利用空间自由度，提供通信能力提高的无线通信系统。
-
公开(公告)号：US06642888B2
公开(公告)日：2003-11-04
申请号：US10020477
申请日：2001-12-12
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.
-
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。
-
45.发明授权公开(公告)号：US08620221B2
公开(公告)日：2013-12-31
申请号：US12866014
申请日：2009-02-05
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
IPC分类号： H04B1/00
CPC分类号： H04B7/0452 , H04B7/026 , H04B7/0434 , H04B7/0697 , H04L25/0228 , H04L25/03343 , H04L2025/03426 , H04L2025/03783 , H04L2025/03802 , H04W72/005
摘要： A base station device (10) communicates between a first terminal device and a second terminal device over the same channel by spatial multiplexing. The base station device (10) comprises an interference cancellation coefficient extractor (30) that extracts an interference cancellation coefficient from a signal received from the first terminal device to cancel interference on a propagation channel with the first terminal device in advance, and transmits a pilot signal that contains information related to the interference cancellation coefficient to the second terminal device. In addition, the base station device (10) also comprises an interference canceller (16) that uses the interference cancellation coefficient to cancel an interference component from transmission data to be transmitted over the same channel, and transmits the transmission data from which the interference component has been canceled by the interference canceller (16) to the first terminal device and the second terminal device over the same channel. A wireless communication system is provided which, in a multi-user MIMO, suppresses superimposed interference components resulting from channel fluctuations and channel estimation errors when interference cancellation is performed in advance in a base station unit on a modulated signal to be transmitted.
摘要翻译： 基站装置（10）通过空间复用在同一信道上在第一终端装置和第二终端装置之间进行通信。 基站装置（10）包括干扰消除系数提取器（30），其从预先从第一终端装置接收到的信号中提取干扰消除系数，以预先消除与第一终端装置的传播信道的干扰，并发送导频 信号，其包含与第二终端装置的干扰消除系数有关的信息。 此外，基站装置（10）还包括使用干扰消除系数从通过同一信道发送的发送数据消除干扰成分的干扰消除器（16），并且发送干扰消除器 被干扰消除器（16）已经通过同一信道被取消到第一终端设备和第二终端设备。 提供了一种无线通信系统，其在多用户MIMO中抑制由信道波动和信道估计误差引起的叠加干扰成分，当干扰消除在基站单元中预先在要发送的调制信号上执行时。
-
公开(公告)号：US20130229297A1
公开(公告)日：2013-09-05
申请号：US13812124
申请日：2011-06-03
IPC分类号： G01S7/34
CPC分类号： G01S7/34 , G01S7/28 , G01S7/2922 , G01S13/0209 , G01S13/42
摘要： A pulse signal is produced in a pulse generating section, and repetitively transmitted from an antenna at constant time intervals. A reception signal, received through an antenna and including a reflective wave from an object, is amplified and gain-adjusted. Thereafter, a distance detecting section detects a reception pulse of the reflected wave, and calculates the distance to the object. The variable attenuator attenuates the reception signal by a gain adjusted in accordance with a gain control signal. The gain of the variable attenuator is controlled so as to be maximum immediately after the pulse signal is transmitted, and to be reduced with elapse of time. Based on a gain adjustment timing signal, a gain adjustment timing when the attenuation amount is changed is made different for each transmission of the pulse signal.
摘要翻译： 在脉冲发生部产生脉冲信号，从天线以恒定的时间间隔反复发送。 通过天线接收并包括来自对象的反射波的接收信号被放大和增益调整。 此后，距离检测部分检测反射波的接收脉冲，并计算到物体的距离。 可变衰减器通过根据增益控制信号调节的增益来衰减接收信号。 可变衰减器的增益被控制为在脉冲信号传输之后立即最大，并且随着时间的流逝而减小。 基于增益调整定时信号，对于脉冲信号的每次发送，使衰减量改变时的增益调整定时不同。
-
公开(公告)号：US08498327B2
公开(公告)日：2013-07-30
申请号：US13459884
申请日：2012-04-30
IPC分类号： H04B1/38
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： Wireless communication apparatus adopting a time division duplex system for transmission and reception using plural antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means detects channel information based on reception output of N reception circuits having a one-to-one correspondence with N antennas. Correction value detection means finds a correction value for correcting deviation occurring between each of N transmission circuits and each of the N reception circuits based on the channel information. A wireless communication apparatus transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means of the wireless communication apparatus detects the correction value using the correction signal.
摘要翻译： 采用使用多个天线进行发送和接收的时分双工系统的无线通信装置，使用通信信号检测和校正发送和接收电路之间发生的幅度和相位的偏差。 信道估计装置根据与N个天线一一对应的N个接收电路的接收输出来检测信道信息。 校正值检测装置根据频道信息找到校正发生在N个发送电路和N个接收电路中的每一个之间的偏差的校正值。 无线通信装置向无线通信装置进行通信的基站发送已知的信号（训练信号）。 基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。 无线通信装置的校正值检测装置使用校正信号来检测校正值。
-
公开(公告)号：US20130127655A1
公开(公告)日：2013-05-23
申请号：US13816045
申请日：2012-04-05
IPC分类号： G01S13/44
CPC分类号： G01S13/44 , G01S3/00 , G01S5/02 , G01S7/288 , G01S7/292 , G01S13/06 , G01S13/284 , G01S13/36 , G01S13/42 , G01S13/582 , G01S2013/0263
摘要： A radar receiver has plural antenna system processors each for performing coherent integration on the basis of correlation values between a reception signal and a transmission signal using correction amounts for phase variations corresponding to plural Doppler frequencies, plural correlation matrix generators for generating, for each of the plural different Doppler frequencies, correlation matrices which are pieces of phase difference information relating to an arrangement of reception antennas on the basis of sets of outputs of the coherent integration, respectively, an adder for adding together outputs of the plural correlation matrix generators, and an incoming direction estimator for estimating an incoming direction of reflection waves on the basis of outputs of the adder.
摘要翻译： 雷达接收机具有多个天线系统处理器，每个天线系统处理器用于基于接收信号和发送信号之间的相关值执行相干积分，所述相关值使用与多个多普勒频率对应的相位变化的校正量，多个相关矩阵发生器，用于为 多个不同的多普勒频率，分别基于相干积分的输出的集合，与接收天线的配置有关的相位差信息的相关矩阵，用于将多个相关矩阵发生器的输出相加的加法器，以及 输入方向估计器，用于基于加法器的输出来估计反射波的输入方向。
-
公开(公告)号：US20130120185A1
公开(公告)日：2013-05-16
申请号：US13811641
申请日：2011-07-14
IPC分类号： G01S13/28
CPC分类号： G01S13/284 , G01S7/2813 , G01S7/285 , G01S13/288
摘要： A radar apparatus transmits a radio frequency transmission signal from a transmitter antenna in a given transmission period, and receives a signal of a reflected wave reflected by a target via a receiver antenna. The radar apparatus includes a transmission signal generator that generates a first transmission signal obtained by modifying a code having a third sub-code sequence and a fourth sub-code sequence coupled to each other in a first transmission period, and generates a second transmission period obtained by modifying a code having a fifth sub-code sequence and a sixth sub-code sequence coupled to each other in a second transmission period, and a transmitter RF unit that converts the first and second transmission signals into radio frequency transmission signals, and transmits the radio frequency transmission signals from the transmitter antenna.
摘要翻译： 雷达装置在给定的传输周期内从发射机天线发射射频信号，并通过接收机天线接收由目标反射的反射波的信号。 雷达装置包括：发送信号发生器，其生成通过在第一发送周期中修改具有彼此耦合的第三子码序列和第四子码序列的码而获得的第一发送信号，并且生成获得的第二发送周期 通过在第二发送周期中修改具有彼此耦合的第五子码序列和第六子码序列的码，以及将第一和第二发送信号转换为射频发送信号的发送器RF单元， 来自发射机天线的射频传输信号。
-
50.发明授权Reception apparatus and reception method for setting a format per divided band 有权用于设定分割频带格式的接收装置和接收方法公开(公告)号：US08428040B2
公开(公告)日：2013-04-23
申请号：US13185028
申请日：2011-07-18
CPC分类号： H04W72/0453 , H04B7/01 , H04B7/0697 , H04L5/0023 , H04L5/0026 , H04L5/0028 , H04L5/0037 , H04L5/0044 , H04L5/0051 , H04L5/006 , H04W24/08 , H04W72/042 , H04W72/085
摘要： A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section (108) detects space multiplexing transmission adaptability for divided bands (DB-1 to DB-Nd) obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results (#1 to #Nd). Transmission format setting section (110) sets a transmission format when carrying out radio transmission based on the detection results (#1 to #Nd) from space multiplexing adaptability detection section (108).
摘要翻译： 一种无线电通信装置，其能够减轻设置发送格式的负担，并抑制装置的规模的增加。 在该装置中，空间复用适应性检测部（108）检测通过划分N个副载波信号属于多载波传输的通信频带而得到的划分频带（DB-1〜DB-Nd）的空间复用传输适应性， 子载波信号属于，并输出检测结果（＃1至#Nd）。 发送格式设定部（110）根据来自空间复用适应性检测部（108）的检测结果（＃1〜#Nd），进行无线发送时的发送格式。
-
-
-
-
-
-
-
-
-
搜索结果
136 条记录 (耗时 0.039 秒)
