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公开(公告)号：US08379620B2
公开(公告)日：2013-02-19
申请号：US13185012
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).
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公开(公告)号：US08261169B2
公开(公告)日：2012-09-04
申请号：US12300301
申请日：2007-05-17
IPC分类号： G06F11/00
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。
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公开(公告)号：US20120213131A1
公开(公告)日：2012-08-23
申请号：US13459884
申请日：2012-04-30
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。
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公开(公告)号：US20120099554A1
公开(公告)日：2012-04-26
申请号：US13379478
申请日：2010-07-01
申请人： Takaaki Kishigami
发明人： Takaaki Kishigami
IPC分类号： H04W72/04
CPC分类号： H04L5/0048 , H04B7/0452 , H04L1/0001 , H04L5/0023 , H04L5/0046 , H04L5/0091 , H04L25/0208 , H04L25/0228 , H04L25/03891 , H04L2025/03426
摘要： The overhead of notifications of other-user modulation information contained in individual control information in a multiuser-MIMO mode is reduced. A wireless communication device according to the invention includes: a pilot sequence allocation section which allocates pilot sequence numbers that are used in spatial multiplexing streams based on modulation information of the spatial multiplexing streams to a plurality of counterparty wireless communication devices that perform multiuser-MIMO transmission; a first modulation information generation section which generates modulation information and pilot sequence allocation number information that are related to a first spatial multiplexing stream addressed to a first counterparty wireless communication device of the plurality of counterparty wireless communication devices; and a second modulation information generation section which generates modulation information related to spatial multiplexing streams addressed to other counterparty wireless communication devices excluding the first counterparty wireless communication device, in order of pilot sequence numbers allocated to the spatial multiplexing streams addressed to the other counterparty wireless communication devices excluding the first counterparty wireless communication device. The wireless communication device notifies the first counterparty wireless communication device of the modulation information and pilot sequence allocation number information which are generated by the first modulation information generation section and the second modulation information generation section.
摘要翻译： 降低了以多用户MIMO模式的各个控制信息中包含的其他用户调制信息的通知开销。 根据本发明的无线通信装置包括：导频序列分配部，其基于空间复用流的调制信息将空间复用流中使用的导频序列号分配给执行多用户MIMO传输的多个对等方无线通信装置 ; 产生调制信息和导频序列分配号码信息的第一调制信息产生部分，所述调制信息和导频序列分配号码信息与寻址到所述多个对手方无线通信装置的第一对方无线通信装置的第一空间复用数据流相关; 以及第二调制信息生成部，按照分配给寻址到其他对方无线通信的空间复用流的导频序列号，按照与第一对方无线通信装置对应的其他对方无线通信装置的空间复用流生成调制信息 不包括第一对手方无线通信设备的设备。 无线通信装置向第一对方无线通信装置通知由第一调制信息生成部和第二调制信息生成部生成的调制信息和导频序列分配号信息。
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75.发明授权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：US08098616B2
公开(公告)日：2012-01-17
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。
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公开(公告)号：US07937057B2
公开(公告)日：2011-05-03
申请号：US12063203
申请日：2006-10-05
IPC分类号： H04B1/06
CPC分类号： H04B7/0452 , H04B7/0857 , H04J15/00
摘要： A spatial filtering adaptable for an interference wave that appears unsteadily can be implemented and also an interference canceling ability can be increased even in a condition that the interference wave does not steadily exist. At a time of non-active communication, the signals from a plurality of interference source radio communication devices 2 are received in advance by an interference signal receiving section 6 as the pre-process mode, then a resultant interference correlation matrix RI is stored in a storing section 7, and then an interference wave receiving antenna weight WI used to receive selectively the transmission signals from the interference source radio communication devices 2 is prepared based on the resultant interference correlation matrix RI. At a time of communication, the operation goes to the receiving process mode to normally receive the signal by a signal separating section 9, and a variation of the interference wave component is detected by an interference wave level detecting section 8 based on a signal power received using the interference wave receiving antenna weight WI. When the interference wave appears or changes, a desired wave separating/receiving antenna weight used to reduce the interference by using a new interference correlation matrix is changed adaptively.
摘要翻译： 可以实现适用于出现不稳定的干扰波的空间滤波，并且即使在干扰波不稳定的情况下也可以增加干扰消除能力。 在非主动通信时，来自多个干扰源无线电通信装置2的信号由干扰信号接收部分6预先接收作为预处理模式，然后将合成的干扰相关矩阵RI存储在 存储部分7，然后基于所得到的干扰相关矩阵RI准备用于选择性地接收来自干扰源无线电通信装置2的传输信号的干扰波接收天线权重WI。 在通信时，操作进入接收处理模式以通过信号分离部分9正常接收信号，并且干扰波分量的变化由干扰波电平检测部分8基于接收到的信号功率来检测 使用干扰波接收天线重量WI。 当干扰波出现或改变时，自适应地改变用于通过使用新的干扰相关矩阵来减少干扰的期望的波分离/接收天线权重。
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公开(公告)号：US07929994B2
公开(公告)日：2011-04-19
申请号：US11573536
申请日：2005-07-28
申请人： Takaaki Kishigami , Yoichi Nakagawa
发明人： Takaaki Kishigami , Yoichi Nakagawa
IPC分类号： H04M1/00
CPC分类号： H04W88/08 , H04B7/022 , H04B7/0626 , H04B7/0669 , H04B7/0689
摘要： There are provided a communication system, a base station control device, and a base station device capable of improving communication quality. In the communication system (100), the base station control device (120) totalizes information on the number of base stations as the number of base station devices (130) which can communicate with a mobile station device (140), makes Nb copies of a data frame, successively assigns integer values from 1 to Nb as stream numbers Ns to the data frames copied, and forms Nb copied data frames including Nb and Ns in header information. Copied data frames having different Ns in the header information are sent to the base station devices (130) which can communicate with the mobile station device (140). According to the Ns and Nb contained in the copied data frame, the base station device (130) subjects the data in the copied data frame to temporal/spatial encoding to form a temporal/spatial encoding series. The mobile station device (140) receives the temporal/spatial encoding series signal from each of the base station devices (130).
摘要翻译： 提供了能够提高通信质量的通信系统，基站控制装置和基站装置。 在通信系统（100）中，基站控制装置（120）将能够与移动台装置（140）进行通信的基站装置（130）的数量的基站数量的信息合计， 一个数据帧，将从1到Nb的整数值作为数据流Ns分配给复制的数据帧，并在标题信息中形成包含Nb和Ns的Nb复制数据帧。 在标题信息中具有不同Ns的复制数据帧被发送到可与移动站装置（140）进行通信的基站装置（130）。 根据复制数据帧中包含的Ns和Nb，基站装置（130）对复制数据帧中的数据进行时间/空间编码，以形成时间/空间编码序列。 移动站装置（140）从每个基站装置（130）接收时间/空间编码序列信号。
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78.发明申请RADIO TRANSMISSION DEVICE, RADIO RECEPTION DEVICE, RADIO TRANSMISSION METHOD, AND RADIO RECEPTION METHOD 有权无线电传输装置，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
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。
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公开(公告)号：US20100118745A1
公开(公告)日：2010-05-13
申请号：US12687453
申请日：2010-01-14
IPC分类号： H04J3/00
CPC分类号： H04B7/0619 , H04B7/0617 , H04B7/086 , H04B17/11 , H04B17/21
摘要： In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means 105 detects channel information based on reception output of reception circuits 104-1 to 104-N provided in a one-to-one correspondence with a plurality of antennas 101-1 to 101-N. Correction value detection means 110 finds a correction value for correcting deviation occurring between each of transmission circuits 103-1 to 103-N and each of the reception circuits 104-1 to 104-N based on the channel information. A wireless communication apparatus 100 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 110 of the wireless communication apparatus 100 detects the correction value using the correction signal (probe signal).
摘要翻译： 在采用使用多个天线执行发送和接收的时分双工系统的无线通信装置中，使用通信信号来检测和校正发送和接收电路之间发生的振幅和相位的偏差。 信道估计装置105基于与多个天线101-1至101-N一一对应地提供的接收电路104-1至104-N的接收输出来检测信道信息。 修正值检测单元110基于通道信息，求出用于校正发送电路103-1〜103-N和各接收电路104-1〜104-N的偏差的校正值。 无线通信装置100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100的校正值检测装置110使用校正信号（探测信号）来检测校正值。
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80.发明申请公开(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。
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