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    Server enabled user data exchange between information processing devices
    1.
    发明授权
    Server enabled user data exchange between information processing devices 有权

    公开(公告)号：US09981185B2

    公开(公告)日：2018-05-29

    申请号：US14744041

    申请日：2015-06-19

    申请人： Masato Kuwahara ,  Yutaka Murakami

    发明人： Masato Kuwahara ,  Yutaka Murakami

    IPC分类号： A63F13/35 ,  A63F13/79 ,  H04L29/08 ,  H04W76/02 ,  H04W4/02 ,  H04W4/00

    CPC分类号： A63F13/35 ,  A63F13/79 ,  H04L67/2871 ,  H04W4/023 ,  H04W4/029 ,  H04W4/80 ,  H04W76/11

    摘要： A server device includes: a receiving unit configured to receive, from each of a plurality of information-processing devices, location information showing a respective location of each information-processing device; a setting unit configured to set a condition showing that one information-processing device is close to another information-processing device, based on a predetermined parameter; a determining unit configured to determine whether a first information-processing device and a second information-processing device from among the plurality of information-processing devices satisfy the condition based on the location information received by the receiving unit; and a transmitting unit configured to transmit information determined at the determining unit to the first information-processing device and the second information-processing device, in a case that the determining unit determines that the first information-processing device and the second information-processing device satisfy the condition.

    Precoding method, and transmitting device
    2.
    发明授权
    Precoding method, and transmitting device 有权
    预编码方法和发送装置

    公开(公告)号：US09287946B2

    公开(公告)日：2016-03-15

    申请号：US13810783

    申请日：2011-12-01

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L25/03 ,  H04B7/06

    CPC分类号： H04B7/0456 ,  H04B7/0469 ,  H04B7/06 ,  H04B7/0606 ,  H04B7/0689 ,  H04L25/03898

    摘要： Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

    摘要翻译： 公开了一种用于同时发送相同频率的第一调制信号和第二调制信号的传输方案。 根据传输方案，预编码权重乘法单元在第一映射之后将预编码权重乘以基带信号和在第二映射之后将基带信号相乘，并输出第一调制信号和第二调制信号。 在预编码权重乘法单元中，规则地跳跃预编码权重。

    Signal generating method and signal generating apparatus
    4.
    发明授权
    Signal generating method and signal generating apparatus 有权
    信号产生方法和信号发生装置

    公开(公告)号：US09054757B2

    公开(公告)日：2015-06-09

    申请号：US14241130

    申请日：2012-09-06

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L5/00

    CPC分类号： H04B7/0469 ,  H04B1/0057 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/0465 ,  H04L5/00 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0222 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    摘要： A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes performing precoding on both signals using a fixed precoding matrix and regularly changing the phase of at least one of the signals. In this method, the power ratio between a plurality of signals transmitted from a plurality of antennas at the same frequency and at the same time differs from the power ratio between a plurality of pilot signals transmitted from the plurality of antennas at the same frequency and at the same time, whereby the accuracy of channel estimation by a reception device is improved.

    摘要翻译： 用于以相同频率同时发射第一调制信号和第二调制信号的传输方法包括使用固定预编码矩阵对两个信号执行预编码，并定期改变至少一个信号的相位。 在该方法中，以相同频率和同一时间从多个天线发送的多个信号之间的功率比与在相同频率和相同频率下从多个天线发送的多个导频信号之间的功率比不同 同时，提高了接收装置的信道估计精度。

    Pre-coding method and pre-coding device
    5.
    发明授权
    Pre-coding method and pre-coding device 有权
    预编码方式和预编码装置

    公开(公告)号：US09008225B2

    公开(公告)日：2015-04-14

    申请号：US14111334

    申请日：2012-04-18

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L1/00 ,  H04L1/06 ,  H04L1/20

    CPC分类号： H04B7/0465 ,  H04B1/713 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0615 ,  H04L1/0009 ,  H04L1/005 ,  H04L1/0643 ,  H04L1/20

    摘要： Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i](s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.

    摘要翻译： 公开了一种预编码方法，包括以下步骤：利用预定的纠错块编码方案产生第一编码块和第二编码块; 通过对从第一编码块产生的第一基带信号s1和第二编码块产生第一基带信号s1，执行对应于从N个矩阵F [i]中选择的矩阵的预编码处理，生成第一预编码信号z1和第二预编码信号z2 分别从第二编码块产生的信号s2; 第一预编码信号z1和第二预编码信号z2满足（z1，z2）T = F [i]（s1，s2）T; 并且改变第一预编码信号z1的功率和第二预编码信号z2的功率中的两者或一者，使得第一预编码信号z1的平均功率小于第二预编码信号z2的平均功率。

    Precoding method, precoding device
    6.
    发明授权
    Precoding method, precoding device 有权
    预编码方法，预编码装置

    公开(公告)号：US08971439B2

    公开(公告)日：2015-03-03

    申请号：US13985707

    申请日：2012-02-17

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/02 ,  H04B7/04 ,  H04L25/03

    CPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04L25/03171 ,  H04L25/03942 ,  H04L25/03949 ,  H04L27/18 ,  H04L27/2626 ,  H04L27/34

    摘要： Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.

    摘要翻译： 公开了一种用于从多个基带信号生成同时以相同频带发送的多个预编码信号的预编码方法。 根据预编码方法，从定义通过在矩阵之间跳跃对多个基带信号执行的预编码处理的矩阵中选择一个矩阵。 与通过使用预定的纠错块编码方案生成的第一编码块和第二编码块相关的第一基带信号和第二基带信号满足给定条件。

    Transmission apparatus and transmission method
    8.
    发明授权
    Transmission apparatus and transmission method 有权
    传输装置及传输方式

    公开(公告)号：US08732547B2

    公开(公告)日：2014-05-20

    申请号：US13566694

    申请日：2012-08-03

    申请人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

    发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

    IPC分类号： H03M13/00

    CPC分类号： H03M13/1105 ,  H03M13/1102 ,  H03M13/1157 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/2909 ,  H04B7/0413 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044

    摘要： In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.

    摘要翻译： 在使用LDPC码的多天线通信系统中，使用简单的方法通过在不限制可应用的LDPC码的情况下执行更少数据的重传来有效地提高接收质量。 在非重发的情况下，多天线发送装置从两个天线发送由LDPC编码块形成的LDPC编码数据。 在重传的情况下，多天线发送装置使用分集增益高于先前发送的发送方法，仅发送如前所述的LDPC编码数据的一部分。 例如，从单个天线发送仅重新发送的LDPC编码数据的一部分。

    Radio communication method and apparatus selectively employing a plurality of antennas
    9.
    发明授权
    Radio communication method and apparatus selectively employing a plurality of antennas 有权
    选择性地采用多个天线的无线通信方法和装置

    公开(公告)号：US08457234B2

    公开(公告)日：2013-06-04

    申请号：US12637524

    申请日：2009-12-14

    申请人： Kiyotaka Kobayashi ,  Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

    发明人： Kiyotaka Kobayashi ,  Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC分类号： H04B7/02 ,  H04L1/02

    CPC分类号： H04B7/0604 ,  H04B7/0608 ,  H04B7/0689 ,  H04B7/0691 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/261

    摘要： A transmitting apparatus that transmits signals from a plurality of antennas, and can improve the security of communication compared with a conventional system. In this apparatus, an antenna changing section (105) stores an antenna change pattern in internal memory, and each time a clock signal is input, generates an antenna change signal directing an antenna change in accordance with the antenna change pattern, and outputs this signal to an antenna selection section (106). Based on the antenna change signal, the antenna selection section (106) selects two different antennas from among the transmitting antennas (107-1 through 107-3) as transmitting antennas of transmit signal A output from a radio section (104-1) and transmit signal B output from a radio section (104-2), and performs radio transmission of transmit signal A and transmit signal B using the selected transmitting antennas.

    摘要翻译： 从多个天线发送信号的发送装置，与以往的系统相比，能够提高通信的安全性。 在该装置中，天线变换部（105）将天线变换模式存储在内部存储器中，并且每次输入时钟信号时，根据天线变化模式生成指示天线变化的天线变换信号，并输出该信号 到天线选择部分（106）。 基于天线变换信号，天线选择部（106）从发送天线（107-1〜107-3）中选择2个不同的天线作为从无线部（104-1）输出的发送信号A的发送天线， 从无线电部分（104-2）输出的发送信号B，并且使用所选择的发送天线执行发送信号A和发送信号B的无线电发送。