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    Communication method, and transmitting apparatus and receiving apparatus using that communication method
    61.
    发明授权
    Communication method, and transmitting apparatus and receiving apparatus using that communication method 有权
    通信方法，以及使用该通信方法的发送装置和接收装置

    公开(公告)号：US08400996B2

    公开(公告)日：2013-03-19

    申请号：US13433577

    申请日：2012-03-29

    申请人： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Yoichi Nakagawa

    发明人： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka ,  Yoichi Nakagawa

    IPC分类号： H04J1/00 ,  H04J3/00 ,  H04B7/212

    CPC分类号： H04L5/0048 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0613 ,  H04B7/0837 ,  H04J11/00 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04W72/0453

    摘要： A transmission apparatus includes a plurality of antennas and a frame configurator that selects, in a first unit time either a first transmitting method which transmits a modulated signal from at least one of the plurality of antennas, or a second transmitting method which transmits a plurality of modulated signals from the plurality of antennas, for a first carrier group arranged for a first terminal and either the first transmitting method or the second transmitting method for a second carrier group arranged for a second terminal. The frame configurator selects, in a second unit time either the first transmitting method or the second transmitting method for the first carrier group arranged for a third terminal and either the first transmitting method or the second transmitting method for the second carrier group arranged for a fourth terminal, wherein each of carrier groups includes one or more sub-carriers.

    摘要翻译： 发送装置包括多个天线和帧配置器，其在第一单位时间中选择发送来自所述多个天线中的至少一个的调制信号的第一发送方法，或者发送多个天线的第二发送方法 针对布置用于第一终端的第一载波组，以及为第二终端配置的第二载波组的第一发射方法或第二发射方法，来自多个天线的调制信号。 帧配置器在第二单位时间中选择用于第三终端的第一载波组的第一发送方法或第二发送方法，以及用于第四载波组的第一发送方法或第二发送方法， 终端，其中每个载波组包括一个或多个子载波。

    Communication apparatus and communication method
    63.
    发明授权
    Communication apparatus and communication method 有权
    通信设备和通信方法

    公开(公告)号：US08270521B2

    公开(公告)日：2012-09-18

    申请号：US13052833

    申请日：2011-03-21

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

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

    IPC分类号： H04B7/02

    CPC分类号： H04L27/0008 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/0618 ,  H04L1/08 ,  H04L5/0046 ,  H04L27/3405 ,  H04W52/42

    摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

    摘要翻译： 从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。 相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。 结果，可以在时间i和时间i + 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得调制信号A和B能够被良好地解调 错误率表现。

    Communication apparatus and communication method
    67.
    发明授权
    Communication apparatus and communication method 有权

    公开(公告)号：US08081703B2

    公开(公告)日：2011-12-20

    申请号：US12913601

    申请日：2010-10-27

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

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

    IPC分类号： H04B7/02

    摘要： Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

    Base station, communication system including base station, and transmission method
    68.
    发明授权
    Base station, communication system including base station, and transmission method 有权
    基站，基站通信系统和传输方式

    公开(公告)号：US08064945B2

    公开(公告)日：2011-11-22

    申请号：US11835906

    申请日：2007-08-08

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

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

    IPC分类号： H04B1/40

    CPC分类号： H04B7/043 ,  H04B7/0621 ,  H04B7/0848 ,  H04B17/24 ,  H04B17/318 ,  H04W52/42

    摘要： Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.

    摘要翻译： 估计从多个天线发送的调制信号的传播路径上的信道波动值，找到以上述信道变动值作为要素而生成的信道变动矩阵的特征值，以将天线接收信号与调制信号相关联， 使用该特征值，接收天线选择，调制信号的组合和对软判决解码值的加权处理，并且调制信号被解调。 通过这种方式，可以基于调制信号（也就是接收设备获得的接收功率的基本接收功率）的有效接收功率进行解调处理，当解调 调制信号），能够提高调制信号的解调精度。

    MIMO-OFDM TRANSMISSION DEVICE AND MIMO-OFDM TRANSMISSION METHOD
    69.
    发明申请
    MIMO-OFDM TRANSMISSION DEVICE AND MIMO-OFDM TRANSMISSION METHOD 有权
    MIMO-OFDM传输设备和MIMO-OFDM传输方法

    公开(公告)号：US20100284488A1

    公开(公告)日：2010-11-11

    申请号：US12840024

    申请日：2010-07-20

    申请人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi

    发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi

    IPC分类号： H04L27/00

    CPC分类号： H04L5/0048 ,  H04B7/0413 ,  H04B2201/70701 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0206 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/265 ,  H04L27/2657 ,  H04L2027/0024

    摘要： A MIMO-OFDM transmission apparatus is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection.Pilot symbol mapping (1111) is provided for forming pilot carriers by assigning orthogonal sequences to corresponding subcarriers among OFDM signals which are transmitted at the same time from respective antennas in the time domain.Even when pilot symbols are multiplexed among a plurality of channels (antennas), this allows frequency offset/phase noise to be estimated with high accuracy.

    摘要翻译： 提供了MIMO-OFDM发送装置，其允许频率偏移的高精度估计，传输路径波动的高精度估计和高精度同步/信号检测。 提供导频符号映射（1111），用于通过在从时域中的各个天线同时发送的OFDM信号中分配正交序列到对应的子载波来形成导频载波。 即使在多个信道（天线）中复用导频符号的情况下，也能够高精度地估计频率偏移/相位噪声。