公开(公告)号：US20130003641A1

公开(公告)日：2013-01-03

申请号：US13582374

申请日：2011-01-31

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

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

IPC分类号： H04W4/06 ,  H04W4/00

CPC分类号： H04B7/0452 ,  H04B7/024 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0658 ,  H04B17/24 ,  H04J11/0033 ,  H04L5/0007 ,  H04L5/0051 ,  H04L25/0224

摘要： Disclosed is a transmission device including a plurality of antennas for transmitting signals in the same channel at the same time point to a plurality of reception devices, characterized by including: a DRS generator configured to generate DRSs (dedicated reference signals) for the respective reception devices; a nonlinear spatial multiplexer configured to generate a nonorthogonal DRS by use of a first group of DRSs including at least one of the DRSs; and a transmitter configured to transmit a signal containing at least the nonorthogonal DRS.

摘要翻译： 公开了一种发送装置，包括：多个天线，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：DRS发生器，被配置为产生用于各个接收装置的DRS（专用参考信号） ; 配置成通过使用包括至少一个DRS的第一组DRS来生成非正交DRS的非线性空间多路复用器; 以及发射机，被配置为发送至少包含非正交DRS的信号。

公开(公告)号：US20120071104A1

公开(公告)日：2012-03-22

申请号：US13321390

申请日：2010-04-14

申请人： Takashi Onodera ,  Hiroshi Nakano ,  Kozue Hirata ,  Minoru Kubota

发明人： Takashi Onodera ,  Hiroshi Nakano ,  Kozue Hirata ,  Minoru Kubota

IPC分类号： H04B15/00 ,  H04B1/10 ,  H04B1/04

CPC分类号： H04L27/34 ,  H04L1/0034 ,  H04L1/0035

摘要： With respect to a wireless communication system comprising a transmitter device 200, which is equipped with a function for performing inflated lattice precoding (ILP) on transmission data, and a receiver device 300, which receives a signal transmitted from the transmitter device and restores data, there is adopted a feature wherein “coefficient α” which is required when the transmitter device 200 performs the above-mentioned ILP, and which is also required when the receiver device performs data restoration, is uniquely derived using information relating to an MCS (modulation parameter) that is applied with respect to the wireless communication system (more specifically, a feature wherein a “coefficient table part,” which uniquely maps MCS information to coefficient α, is provided at both the transmitter device and the receiver device, and wherein coefficient α required at both the transmitter device and the receiver device is derived using this “coefficient table part”), thereby evading having to exchange information relating to “coefficient α” between the transmitter device and the receiver device.

摘要翻译： 对于包括发送装置200的无线通信系统，其具有对发送数据执行充气格子预编码（ILP）功能的接收装置300，接收装置300接收从发送装置发送的信号并恢复数据， 采用了当发射机装置200执行上述ILP所需的并且当接收机装置执行数据恢复时也需要的“系数α”的特征，使用与MCS（调制参数 ）（更具体地，其中在发送机设备和接收机设备两者处提供唯一映射MCS信息到系数α的“系数表部分”的特征，其中系数α 在发射机设备和接收机设备上都需要使用该“系数表部分”）， 从而避免必须交换与发射机设备和接收机设备之间的“系数α”有关的信息。

公开(公告)号：US20120045995A1

公开(公告)日：2012-02-23

申请号：US13266065

申请日：2010-04-16

申请人： Hiroshi Nakano ,  Minoru Kubota ,  Takashi Onodera ,  Kozue Hirata

发明人： Hiroshi Nakano ,  Minoru Kubota ,  Takashi Onodera ,  Kozue Hirata

IPC分类号： H04B15/00

CPC分类号： H04J11/0036 ,  H04J11/004 ,  H04L5/0023 ,  H04L27/2626 ,  H04L27/2647

摘要： An interference suppression wireless communication device to be used in an interference suppression wireless communication system, includes: a variance acquirer configured to acquire a variance of channel estimation errors associated with a channel for a transmission signal of the interference suppression wireless communication device, a variance of channel estimation errors associated with a channel for an interference signal, and a variance of noise included in the transmission signal when the transmission signal is received; and a coefficient calculator configured to calculate, based on the variances acquired by the variance acquirer, a coefficient by which the interference signal to be subtracted from the transmission signal is multiplied.

摘要翻译： 在干扰抑制无线通信系统中使用的干扰抑制无线通信装置包括：差分获取装置，被配置为获取与干扰抑制无线通信装置的发送信号的信道相关联的信道估计误差的方差， 当接收到发送信号时，与干扰信号的信道相关的信道估计误差和包括在发送信号中的噪声的方差; 以及系数计算器，被配置为基于由方差获取器获取的方差来计算要从传输信号中减去的干扰信号被乘以的系数。

公开(公告)号：US09178587B2

公开(公告)日：2015-11-03

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： H04W4/00 ,  H04B7/04 ,  H04J11/00 ,  H04L25/03 ,  H04B7/06 ,  H04L5/00

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：US20130324136A1

公开(公告)日：2013-12-05

申请号：US13984900

申请日：2012-01-31

申请人： Kozue Hirata ,  Shinpei Toh

发明人： Kozue Hirata ,  Shinpei Toh

IPC分类号： H04W16/14

CPC分类号： H04W16/14 ,  H04B7/0417 ,  H04W16/32 ,  H04W52/244

摘要： In a communication system, a first cell that covers a wide region includes, in a cover region thereof, a second cell that covers a smaller region than the first cell, one first terminal device or more positioned in the first cell receive a signal on which precoding has been performed and that is transmitted by a first base station apparatus that controls the first cell, and one second terminal device or more positioned in the second cell receive a signal on which precoding has been performed and that is transmitted using the same frequency as in the first cell by a second base station apparatus that controls the second cell. The communication system determines the number of streams to be transmitted by the second base station apparatus on the basis of information regarding the number of streams to be transmitted by the first base station apparatus. As a result, in a system in which interference between cells exists, interference may be reduced with a simple structure using transmit and receive filters.

摘要翻译： 在通信系统中，覆盖广域的第一小区在其覆盖区域中包括覆盖比第一小区更小的区域的第二小区，位于第一小区中的一个第一终端设备或更多个第一小区接收信号， 已经执行了预编码，并且由控制第一小区的第一基站装置发送，并且位于第二小区中的一个第二终端设备接收已经执行了预编码的信号，并且使用与第 在第一小区中由控制第二小区的第二基站装置。 通信系统根据关于由第一基站装置发送的流的数量的信息来确定由第二基站装置发送的流的数量。 结果，在存在小区之间的干扰的系统中，可以通过使用发射和接收滤波器的简单结构来减少干扰。

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：US20130070871A1

公开(公告)日：2013-03-21

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： H04B7/06

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。