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

IPC分类号： H04J15/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/10 ,  H04B7/26 ,  H04Q7/36 ,  H04L1/02

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

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.

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。

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：US08498327B2

公开(公告)日：2013-07-30

申请号：US13459884

申请日：2012-04-30

申请人： Yasuaki Yuda ,  Takaaki Kishigami ,  Takashi Fukagawa ,  Yoichi Nakagawa ,  Shinichiro Takabayashi

发明人： Yasuaki Yuda ,  Takaaki Kishigami ,  Takashi Fukagawa ,  Yoichi Nakagawa ,  Shinichiro Takabayashi

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：US08428040B2

公开(公告)日：2013-04-23

申请号：US13185028

申请日：2011-07-18

申请人： Takaaki Kishigami ,  Yoichi Nakagawa ,  Kentaro Miyano

发明人： Takaaki Kishigami ,  Yoichi Nakagawa ,  Kentaro Miyano

IPC分类号： H04W4/00 ,  H04J1/00 ,  H04B7/208

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。

公开(公告)号：US08416748B2

公开(公告)日：2013-04-09

申请号：US11568571

申请日：2005-04-20

申请人： Takaaki Kishigami ,  Yoichi Nakagawa

发明人： Takaaki Kishigami ,  Yoichi Nakagawa

IPC分类号： H04W4/00

CPC分类号： H04W16/28 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0665 ,  H04B7/0854

摘要： A wireless communication system capable of removing a transmission signal to a different terminal space division multiplexed, an interference signal, in a terminal when wireless communications are conducted using space division multiple access is provided. A base station apparatus sends a notification of dedicated data transmission to a space division multiplexed terminal MSm and also sends a notification of information concerning a transmission beam used in a different terminal space division multiplexed and information concerning signal power used in the different terminal normalized in the terminal MSm. Based on the sent information, each terminal MSm calculates interference cancel weight according to MMSE criterion as the weight to maximize SINR and a reception signal is multiplied by the obtained interference cancel weight for decreasing the interference component and then the signal is detected by maximum likelihood estimation based on information of signal constellation transmitted for receiving spatially multiple-transmitted signal.

摘要翻译： 提供一种无线通信系统，其能够在使用空分多路访问进行无线通信时，将发送信号去除到终端中的不同终端空分复用，干扰信号。 基站装置向空分多路复用终端MSm发送专用数据发送通知，并且发送关于在不同终端空分多路复用中使用的发送波束的信息的通知，以及关于在不同终端中使用的信号功率的信息， 终端MSm。 根据所发送的信息，每个终端MSm根据MMSE准则计算干扰消除权重作为权重以最大化SINR，并且接收信号乘以所获得的干扰消除权重以减小干扰分量，然后通过最大似然估计来检测信号 基于发送的用于接收空间多发信号的信号星座的信息。

公开(公告)号：US20130010858A1

公开(公告)日：2013-01-10

申请号：US13635531

申请日：2011-03-18

申请人： Takaaki Kishigami ,  Daichi Imamura ,  Isamu Yoshii

发明人： Takaaki Kishigami ,  Daichi Imamura ,  Isamu Yoshii

IPC分类号： H04N7/32

CPC分类号： H04N19/114 ,  H04N19/149 ,  H04N19/196

摘要： When controlling transmission channel parameters and video encoding parameters so as to be linked to each other in video transmission, the video quality on the receiving side is further improved. 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 predicted value of the PHY transmission rate is larger than a determined reference value and increasing the GOP size when the predicted value of the PHY transmission rate is equal to or less than the determined reference value.

摘要翻译： 当在视频传输中控制传输信道参数和视频编码参数以彼此链接时，接收侧的视频质量进一步提高。 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。 当PHY传输速率的预测值大于所确定的参考值时，跨层速率控制单元通过减小GOP大小来根据传播变化执行GOP大小的可变控制，并且当PHY的预测值 传输速率等于或小于所确定的参考值。

公开(公告)号：US20120320861A1

公开(公告)日：2012-12-20

申请号：US13581687

申请日：2011-02-25

申请人： Ryohei Kimura ,  Takaaki Kishigami ,  Isamu Yoshii ,  Daichi Imamura

发明人： Ryohei Kimura ,  Takaaki Kishigami ,  Isamu Yoshii ,  Daichi Imamura

IPC分类号： H04W72/04

CPC分类号： H04L5/0007 ,  H04L5/003 ,  H04L5/0032 ,  H04L5/0048

摘要： A wireless communications device that transmits a multiplexed signal of a plurality of data sets of different sizes to a communications terminal includes an empty resource block detection section, which detects empty resource blocks of the data sets each of which does not use any of a predetermined number of resource blocks, from among the plurality of data sets whereto the predetermined number of resource blocks are allocated in the time direction and the frequency direction; and a data redistribution section that redistributes a part of data that is distributed in resource blocks, with respect to the data sets whereto resource including empty resource blocks are allocated, in the vicinity of pilot symbols that are disposed within the empty resource blocks. It is possible to effectively utilize the function of all the pilot symbols and improve error rate characteristics.

摘要翻译： 向通信终端发送不同大小的多个数据组的复用信号的无线通信装置包括：空资源块检测部，其检测不使用预定数量的数据组的空资源块; 从在时间方向和频率方向上分配预定数量的资源块的多个数据组中的资源块， 以及重新分配在分配在资源块中的一部分数据的数据再分配部分，所述资源块相对于分配有包括空资源块的资源的数据集，在布置在空资源块内的导频符号附近。 可以有效利用所有导频符号的功能，提高误码率特性。

公开(公告)号：US20120287855A1

公开(公告)日：2012-11-15

申请号：US13521859

申请日：2011-01-26

申请人： Takaaki Kishigami ,  Isamu Yoshii

发明人： Takaaki Kishigami ,  Isamu Yoshii

IPC分类号： H04W4/00

CPC分类号： H04L1/0071 ,  H04L1/007

摘要： A high error correction capability is kept while reducing a processing delay in application of the ECC in a multi-radio. A wireless communication device for performing data transmission by using a plurality of radio systems RAT1 and RAT2 includes, in a GLL 100 that absorbs a difference in physical layer and MAC layer among RATs, an encoder 301 that encodes transmission data, a multiplexer 302 that distributes encoded data in correspondence with the RAT1 and the RAT2, interleavers 303 and 304 that interleave a plurality of coded data that has been encoded and multiplexed, and a resource controller 305 that sets an interleaving size for each interleaving processing in the interleavers 303 and 304 based on a transmission delay difference between the RAT1 and the RAT2.

摘要翻译： 保持高纠错能力，同时减少在多无线电中应用ECC的处理延迟。 用于通过使用多个无线电系统RAT1和RAT2执行数据传输的无线通信设备包括：在吸收RAT中物理层和MAC层之间的差异的GLL 100中，编码传输数据的编码器301，分配 与RAT1和RAT2对应的编码数据，对交织器303和304进行交织的多个编码数据的交织器303和304以及基于交织器303和304中的每个交织处理设置交织大小的资源控制器305 关于RAT1和RAT2之间的传输延迟差异。