公开(公告)号：US20130286940A1

公开(公告)日：2013-10-31

申请号：US13877368

申请日：2011-10-03

申请人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

发明人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

IPC分类号： H04B7/04

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/065

摘要： A wireless communication system in which a base station apparatus having a plurality of transmission antennas and one or more terminal apparatuses communicate with each other is provided with at least two methods of a first feedback method and a second feedback method regarding propagation path information at the time of reception. In accordance with a communication condition between the base station apparatus and the terminal apparatus, or the function of the terminal apparatus, the terminal apparatus performs feedback by one of the two methods of the first feedback method and the second feedback method. The base station apparatus performs spatial multiplexing transmission on the basis of the propagation path information that has been fed back. Thus, in a system in which CSI is fed back for MIMO transmission, desired transmission characteristics can be efficiently obtained.

摘要翻译： 具有多个发送天线和一个以上的终端装置的基站装置相互通信的无线通信系统具备关于该时刻的传播路径信息的第一反馈方法和第二反馈方法的至少两种方法 的接待。 根据基站装置与终端装置之间的通信条件或终端装置的功能，终端装置通过第一反馈方法和第二反馈方法的两种方法之一进行反馈。 基站装置根据反馈的传播路径信息进行空间复用传输。 因此，在反馈用于MIMO传输的系统中，可以有效地获得期望的传输特性。

公开(公告)号：US20130223269A1

公开(公告)日：2013-08-29

申请号：US13882770

申请日：2011-10-05

申请人： Shimpei To ,  Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

发明人： Shimpei To ,  Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

IPC分类号： H04B7/04

CPC分类号： H04B7/0421 ,  H04B7/0452 ,  H04B7/0639 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0057 ,  H04L25/021 ,  H04L25/0248 ,  H04L25/03942 ,  H04L25/03955 ,  H04L27/2613 ,  H04L2025/03414 ,  H04W72/046

摘要： Provided is a radio communication system in which a base station apparatus with a plurality of transmission antennas spatially multiplexes and transmits a transmission signal addressed to a plurality of mobile station apparatuses, and in which the mobile station apparatuses receive the signal transmitted from the base station apparatus. The mobile station apparatuses select a desired precoding vector from predetermined candidates, and give the base station apparatus information identifying the selected precoding vector. The base station apparatus generates a linear filter on the basis of the information from the mobile station apparatuses, grasps multi-user interference that at least one of the mobile station apparatuses is subjected to when the generated linear filter is used, generates a new transmission signal by subtracting the multi-user interference from the transmission signal, and spatially multiplexes the transmission signal addressed to the plurality of mobile station apparatuses by multiplying the new transmission signal by the linear filter. Thus, favorable reception characteristics can be obtained while CSI feedback is performed efficiently.

摘要翻译： 提供一种无线通信系统，其中具有多个发送天线的基站装置进行空间复用并发送寻址到多个移动台装置的发送信号，并且其中移动站装置接收从基站装置发送的信号 。 移动站装置从预定的候选中选择所希望的预编码向量，并给出识别选择的预编码向量的基站装置信息。 基站装置基于来自移动站装置的信息生成线性滤波器，掌握使用生成的线性滤波器时至少一个移动台装置受到的多用户干扰，生成新的发送信号 通过从发送信号中减去多用户干扰，并且通过将新的发送信号乘以线性滤波器来空间复用寻址到多个移动台装置的发送信号。 因此，可以有效地执行CSI反馈，从而获得良好的接收特性。

公开(公告)号：US09166658B2

公开(公告)日：2015-10-20

申请号：US13877368

申请日：2011-10-03

申请人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

发明人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

IPC分类号： H04W4/00 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/065

摘要： A wireless communication system in which a base station apparatus having a plurality of transmission antennas and one or more terminal apparatuses communicate with each other is provided with at least two methods of a first feedback method and a second feedback method regarding propagation path information at the time of reception. In accordance with a communication condition between the base station apparatus and the terminal apparatus, or the function of the terminal apparatus, the terminal apparatus performs feedback by one of the two methods of the first feedback method and the second feedback method. The base station apparatus performs spatial multiplexing transmission on the basis of the propagation path information that has been fed back. Thus, in a system in which CSI is fed back for MIMO transmission, desired transmission characteristics can be efficiently obtained.

摘要翻译： 具有多个发送天线和一个以上的终端装置的基站装置相互通信的无线通信系统具备关于该时刻的传播路径信息的第一反馈方法和第二反馈方法的至少两种方法 的接待。 根据基站装置与终端装置之间的通信条件或终端装置的功能，终端装置通过第一反馈方法和第二反馈方法的两种方法之一进行反馈。 基站装置根据反馈的传播路径信息进行空间复用传输。 因此，在反馈用于MIMO传输的系统中，可以有效地获得期望的传输特性。

公开(公告)号：US09019919B2

公开(公告)日：2015-04-28

申请号：US13700756

申请日：2011-05-27

申请人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

发明人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

IPC分类号： H04B7/06

CPC分类号： H04B7/0697 ,  H04B7/0617

摘要： When signals received by receiving antennas included in each terminal are subjected to MMSE combining, it is configured that each terminal is able to grasp position of desired signal in signal vector obtained after combining. A base station 100 receives by a receiving antenna 23 from the terminal apparatus channel state information between a transmitting antenna 16 and spatial multiplexing object antennas included in each terminal apparatus. A transmit weight calculation unit 19 calculates a transmit weight for performing spatial multiplexing transmission to the terminal apparatus based on the channel state information. Transmit weight multiplication unit s 12 and 18 multiplies an information signal addressed to each terminal apparatus to be performed spatial multiplexing by the transmit weight. A signal multiplexing unit 13 multiplexes the information signal multiplied by the transmit weight and an information to specify the information signal that needs to be demodulated by each terminal apparatus.

摘要翻译： 当通过每个终端中包含的接收天线接收到的信号进行MMSE组合时，配置为每个终端能够在组合后获得的信号向量中掌握期望信号的位置。 基站100由发送天线16和各终端装置中包含的空间复用对象天线之间的终端装置信道状态信息由接收天线23接收。 发送权重计算单元19基于信道状态信息计算用于对终端装置执行空间复用传输的发送权重。 发送权重乘法单元12和18将寻址到每个终端设备的信息信号乘以发送权重进行空间复用。 信号复用单元13将乘以发送权重的信息信号和用于指定每个终端装置需要解调的信息信号的信息进行复用。

公开(公告)号：US20130136050A1

公开(公告)日：2013-05-30

申请号：US13700754

申请日：2011-05-13

申请人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

发明人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

IPC分类号： H04W24/02

CPC分类号： H04W24/02 ,  H04B7/0452 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0656 ,  H04L25/4975 ,  H04L27/2601

摘要： To realize transmission performances equivalent to those of an MU-MIMO BLAST ZF-THP system without increasing a signal processing amount in a base station apparatus in a downlink MU-MIMO transmission system. A transmission apparatus is provided with a plurality of transmission antennas, generates a transmission signal addressed to each reception apparatus based on information indicating spatial correlation of channels to and from a plurality of reception apparatuses, space-multiplexes the generated each transmission signal in the same wireless resource, and transmits it to each reception apparatus. The transmission apparatus includes: an ordering determination part 601 which determines an order in which a transmission signal addressed to each reception apparatus is generated based on information indicating spatial correlation of channels; a linear filter generation part 603 which generates a linear filter based on the determined order; a THP part 605 which performs a THP process by using the determined order and the linear filter; and a linear filter multiplication part 607 which multiplies an output of the THP part 605 by the linear filter.

摘要翻译： 实现与MIMO-MIMO BLAST ZF-THP系统相当的传输性能，而不增加下行MU-MIMO传输系统中的基站装置中的信号处理量。 发送装置具有多个发送天线，基于表示与多个接收装置的频道的频道的空间相关性的信息，生成发往各接收装置的发送信号，对同一无线电中产生的各发送信号进行空间复用 资源，并将其发送到每个接收装置。 传输装置包括：排序确定部分601，其基于指示信道的空间相关性的信息来确定寻址到每个接收装置的发送信号的顺序; 线性滤波器生成部603，其基于所确定的次序生成线性滤波器; 通过使用确定的顺序执行THP处理的THP部件605和线性滤波器; 线性滤波器乘法部607，其将THP部605的输出与线性滤波器相乘。

公开(公告)号：US09185577B2

公开(公告)日：2015-11-10

申请号：US13700754

申请日：2011-05-13

申请人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

发明人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

IPC分类号： H04W24/02 ,  H04B7/04 ,  H04L1/06 ,  H04L25/497 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04W24/02 ,  H04B7/0452 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0656 ,  H04L25/4975 ,  H04L27/2601

摘要： To realize transmission performances equivalent to those of an MU-MIMO BLAST ZF-THP system without increasing a signal processing amount in a base station apparatus in a downlink MU-MIMO transmission system. A transmission apparatus is provided with a plurality of transmission antennas, generates a transmission signal addressed to each reception apparatus based on information indicating spatial correlation of channels to and from a plurality of reception apparatuses, space-multiplexes the generated each transmission signal in the same wireless resource, and transmits it to each reception apparatus. The transmission apparatus includes: an ordering determination part 601 which determines an order in which a transmission signal addressed to each reception apparatus is generated based on information indicating spatial correlation of channels; a linear filter generation part 603 which generates a linear filter based on the determined order; a THP part 605 which performs a THP process by using the determined order and the linear filter; and a linear filter multiplication part 607 which multiplies an output of the THP part 605 by the linear filter.

摘要翻译： 实现与MIMO-MIMO BLAST ZF-THP系统相当的传输性能，而不增加下行MU-MIMO传输系统中的基站装置中的信号处理量。 发送装置具有多个发送天线，基于表示与多个接收装置的频道的频道的空间相关性的信息，生成发往各接收装置的发送信号，对同一无线电中产生的各发送信号进行空间复用 资源，并将其发送到每个接收装置。 传输装置包括：排序确定部分601，其基于指示信道的空间相关性的信息来确定寻址到每个接收装置的发送信号的顺序; 线性滤波器生成部603，其基于所确定的次序生成线性滤波器; 通过使用确定的顺序执行THP处理的THP部件605和线性滤波器; 线性滤波器乘法部607，其将THP部605的输出与线性滤波器相乘。

公开(公告)号：US20130121277A1

公开(公告)日：2013-05-16

申请号：US13700756

申请日：2011-05-27

申请人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

发明人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

IPC分类号： H04B7/06

CPC分类号： H04B7/0697 ,  H04B7/0617

摘要： When signals received by receiving antennas included in each terminal are subjected to MMSE combining, it is configured that each terminal is able to grasp position of desired signal in signal vector obtained after combining. A base station 100 receives by a receiving antenna 23 from the terminal apparatus channel state information between a transmitting antenna 16 and spatial multiplexing object antennas included in each terminal apparatus. A transmit weight calculation unit 19 calculates a transmit weight for performing spatial multiplexing transmission to the terminal apparatus based on the channel state information. Transmit weight multiplication unit s 12 and 18 multiplies an information signal addressed to each terminal apparatus to be performed spatial multiplexing by the transmit weight. A signal multiplexing unit 13 multiplexes the information signal multiplied by the transmit weight and an information to specify the information signal that needs to be demodulated by each terminal apparatus.

摘要翻译： 当通过每个终端中包含的接收天线接收到的信号进行MMSE组合时，配置为每个终端能够在组合后获得的信号向量中掌握期望信号的位置。 基站100由发送天线16和各终端装置中包含的空间复用对象天线之间的终端装置信道状态信息由接收天线23接收。 发送权重计算单元19基于信道状态信息计算用于对终端装置执行空间复用传输的发送权重。 发送权重乘法单元12和18将寻址到每个终端设备的信息信号乘以发送权重进行空间复用。 信号复用单元13将乘以发送权重的信息信号和用于指定每个终端装置需要解调的信息信号的信息进行复用。

公开(公告)号：US20120327881A1

公开(公告)日：2012-12-27

申请号：US13582259

申请日：2011-01-31

申请人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

发明人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

IPC分类号： H04B7/06 ,  H04W72/04

CPC分类号： H04B7/0452 ,  H04B7/0697 ,  H04J11/0033 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/03305

摘要： The disclosed is a transmission device including a plurality of transmission antennas for transmitting signals in the same channel at the same time point to a plurality of reception devices, characterized by including: a dedicated reference signal generator configured to generate dedicated reference signals for the respective reception devices; a data signal generator configured to generate data signals for the respective reception devices; a spatial multiplexer configured to spatially multiplex at least some of the dedicated reference signals and at least some of the data signals; and a transmitter configured to transmit the spatially multiplexed signals.

摘要翻译： 所公开的是一种发送装置，其包括：多个发送天线，用于在同一时间点向多个接收装置发送同一信道中的信号，其特征在于包括：专用参考信号发生器，被配置为产生用于各个接收的专用参考信号 设备; 数据信号发生器，被配置为生成各个接收装置的数据信号; 空间多路复用器，被配置为空间复用所述专用参考信号和所述数据信号中的至少一些信号中的至少一些; 以及被配置为发送所述空间复用信号的发射机。

公开(公告)号：US20120307706A1

公开(公告)日：2012-12-06

申请号：US13576866

申请日：2010-12-17

申请人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba ,  Shimpei To

发明人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba ,  Shimpei To

IPC分类号： H04W4/06

CPC分类号： H04L25/03343 ,  H04B7/0604 ,  H04B7/0697 ,  H04J11/0033 ,  H04L2025/03426 ,  H04W52/42

摘要： A multiplexed signal generator is configured to multiplex a signal addressed to a first reception device which has been subjected to a power suppression process of suppressing the power of the signal, and a signal addressed to a second reception device which is not subjected to the power suppression process.

摘要翻译： 复用信号发生器被配置为对寻址到已经经过抑制信号功率的功率抑制处理的第一接收装置的信号进行复用，以及寻址到不经受功率抑制的第二接收装置的信号 处理。

公开(公告)号：US09106297B2

公开(公告)日：2015-08-11

申请号：US13700949

申请日：2011-05-27

申请人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba

发明人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba

IPC分类号： H04L25/49 ,  H04B7/06 ,  H04B7/04

CPC分类号： H04B7/0697 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0626

摘要： When spatial multiplexing is performed to any of a plurality of receiving antennas included in each terminal, it becomes possible to obtain excellent receiving characteristics by combining signals received by all antennas appropriately. A receiving antenna unit 28 receives channel state information from each terminal, a channel matrix H is obtained. A transmit weight/interference coefficient calculation unit 24 calculates a transmit weight and an interference coefficient based on channel matrix. The transmit weight is input to transmit weight multiplication units 17 and 23. The interference generation unit 15 generates an interference signal based on the interference coefficient. An interference subtraction unit 13 subtracts the interference signal from a desired signal. A modulo unit 14 adds a signal so that amplitude of an information signal output from the interference subtraction unit 13 falls within a constant range. A signal multiplexing unit 18 performs spatial multiplexing to the signal performed nonlinear arithmetic.

摘要翻译： 当对每个终端中包括的多个接收天线中的任何一个进行空间复用时，通过适当地组合由所有天线接收的信号，可以获得良好的接收特性。 接收天线单元28从每个终端接收信道状态信息，获得信道矩阵H. 发送权重/干扰系数计算单元24基于信道矩阵来计算发送权重和干扰系数。 发送权重被输入到发送权重乘法单元17和23.干扰生成单元15基于干扰系数产生干扰信号。 干扰减除单元13从期望的信号中减去干扰信号。 模数单元14添加信号，使得从干扰减除单元13输出的信息信号的幅度落在一定范围内。 信号复用单元18对所执行的非线性运算进行空间复用。