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    Wireless communication apparatus and wireless communication method
    11.
    发明授权
    Wireless communication apparatus and wireless communication method 有权
    无线通信装置和无线通信方法

    公开(公告)号：US09143302B2

    公开(公告)日：2015-09-22

    申请号：US14153466

    申请日：2014-01-13

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Yutaka Murakami ,  Shinichiro Takabayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC: H04J11/00 ,  H04L5/00 ,  H04B1/692 ,  H04L1/00 ,  H04L27/00 ,  H04W72/04

    CPC classification number: H04L5/0058 ,  H04B1/692 ,  H04L1/0001 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0075 ,  H04L5/0092 ,  H04L27/0008 ,  H04L27/2601 ,  H04W72/0453

    Abstract: A communication method of a base station transmits a modulation signal based on an OFDM (orthogonal frequency division multiplexing) modulation scheme to a plurality of communication terminals. The method includes forming a transmission frame on which a first subcarrier group and a second subcarrier group are arranged, and determining on a per frame basis, which subcarrier group of the first subcarrier group and the second subcarrier group is allocated to each of the plurality of communication terminals and what number of subcarriers are selected from the subcarrier group that is allocated to each of the plurality of communication terminals. The method further includes forming the transmission frame based on the determined subcarrier group and the determined number of subcarriers, transmitting the modulation signal including the transmission frame, and receiving feedback information including radio propagation condition estimation information from each of the plurality of communication terminals.

    Abstract translation: 基站的通信方法将OFDM（正交频分复用）调制方式的调制信号发送到多个通信终端。 该方法包括形成其上布置有第一子载波组和第二副载波组的传输帧，并且基于每帧确定第一副载波组和第二副载波组的哪个子载波组被分配给多个 通信终端以及从分配给多个通信终端中的每一个的子载波组中选择多少副载波。 该方法还包括基于所确定的子载波组和所确定的子载波数，形成传输帧，发送包括传输帧的调制信号，以及从多个通信终端中的每一个接收包括无线传播条件估计信息的反馈信息。

    Communication apparatus and communication system
    12.
    再颁专利
    Communication apparatus and communication system 有权

    公开(公告)号：USRE49244E1

    公开(公告)日：2022-10-11

    申请号：US16295722

    申请日：2019-03-07

    Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

    Inventor： Masayuki Orihashi ,  Yutaka Murakami ,  Katsuaki Abe ,  Akihiko Matsuoka

    IPC: H04L9/12 ,  H04L9/08 ,  H04B1/7113 ,  H04K1/00 ,  H04W12/04 ,  H04B1/7115 ,  H04W12/77 ,  H04K1/10 ,  H04K1/08

    Abstract: A communication apparatus includes a reference signal generating section, a transmitting section, a propagation estimating section, a first data acquiring section, and a decoding section. The reference signal generating section generates a first reference signal to enable a communicating party to estimate a propagation environment. The transmitting section transmits the first reference signal. The propagation estimating section estimates a first propagation estimation value of the propagation environment using a second reference signal transmitted from the communicating party. The first data acquiring section generates first data using the first propagation estimation value. The decoding section decodes a transmission signal encoded using a second propagation estimation value that is estimated by the communicating party using the first reference signal, to obtain second data using the first data.

    TRANSMISSION APPARATUS AND METHOD, AND RECEPTION APPARATUS AND METHOD
    16.
    发明申请
    TRANSMISSION APPARATUS AND METHOD, AND RECEPTION APPARATUS AND METHOD 审中-公开
    传输装置和方法以及接收装置和方法

    公开(公告)号：US20150244434A1

    公开(公告)日：2015-08-27

    申请号：US14709858

    申请日：2015-05-12

    Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

    Inventor： Yutaka MURAKAMI ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC: H04B7/04 ,  H04L27/00

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

    Abstract: 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.

    Abstract translation: 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。

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