公开(公告)号：US20180302204A1

公开(公告)日：2018-10-18

申请号：US16015053

申请日：2018-06-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L5/00 ,  H04W52/52 ,  H04B7/06 ,  H04L1/06 ,  H04L29/06 ,  H04L27/26 ,  H04L27/18 ,  H04L27/14 ,  H04L27/12 ,  H04L27/06 ,  H04L27/04 ,  H04L25/02 ,  H04B7/08 ,  H04B7/0413 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L25/0204 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.

公开(公告)号：US10033551B2

公开(公告)日：2018-07-24

申请号：US15648218

申请日：2017-07-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04B7/02 ,  H04L25/02 ,  H04L27/26 ,  H04L29/06 ,  H04L5/00 ,  H04L1/06 ,  H04B7/06 ,  H04L27/14 ,  H04L27/12 ,  H04L27/06 ,  H04L27/04 ,  H04B7/0413 ,  H04B7/08 ,  H04L27/18

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L25/0204 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes orthogonal frequency division multiplexing (OFDM) modulation signal generating circuitry. The circuitry generates a first OFDM modulation signal by inserting symbols for demodulation in a first plurality of subcarriers at a first time and in a second plurality of sub-carriers at a second time adjacent to the first time, the symbols for demodulation being reception processing reference symbols of a reception apparatus, and, inserting symbols, having both an in-phase (I) component and a quadrature-phase (Q) component in an I-Q plane of zero, in the second plurality of sub-carriers at the first time and in the first plurality of sub-carriers at the second time. The circuitry generates a second OFDM modulation signal by inserting the symbols for demodulation in the second plurality of subcarriers at the first time and in the first plurality of sub-carriers at the second time, and, inserting the symbols, having both the I component and the Q component in the I-Q plane of zero, in the first plurality of sub-carriers at the first time and in the second plurality of sub-carriers at the second time. The apparatus includes transmitting circuitry to transmit the first and the second OFDM modulation signals, from respective different antennas, in an identical frequency band.

公开(公告)号：US09160491B2

公开(公告)日：2015-10-13

申请号：US14094420

申请日：2013-12-02

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L27/06 ,  H04L1/06 ,  H04N19/39 ,  H04L1/00 ,  H04L25/06 ,  H04L27/34 ,  H04L27/38 ,  H04B7/04 ,  H04B7/08 ,  H04L25/03

CPC classification number: H04L1/06 ,  H04B7/0413 ,  H04B7/0854 ,  H04L1/0054 ,  H04L1/006 ,  H04L1/007 ,  H04L25/03305 ,  H04L25/03324 ,  H04L25/03891 ,  H04L25/061 ,  H04L27/3488 ,  H04L27/38 ,  H04L2025/03611 ,  H04N19/39

Abstract: A transmitting apparatus and method transmits different modulated signals from a plurality of antennas, and employs a configuration that includes a modulation section that obtains a modulated signal by performing signal point mapping of transmit bits using a signal point arrangement that is divided into a plurality of signal point sets on the IQ plane, whereby the minimum distance between signal points within a signal point set is smaller than the minimum signal point distance between signal point sets; and an antenna that transmits a modulated signal obtained by the modulation section. A signal point generating apparatus generates a first and second symbols to be transmitted by first and second antennas, respectively.

Abstract translation: 一种发送装置和方法从多个天线发送不同的调制信号，并且采用包括通过使用信号点布置来执行发送比特的信号点映射来获得调制信号的调制部分的配置，该信号点布置被划分为多个信号 在IQ平面上的点集合，由此信号点集合内的信号点之间的最小距离小于信号点集之间的最小信号点距离; 以及发送由调制部获得的调制信号的天线。 信号点生成装置生成分别由第一和第二天线发送的第一和第二符号。

公开(公告)号：US20140307828A1

公开(公告)日：2014-10-16

申请号：US14314420

申请日：2014-06-25

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/0608 ,  H04B7/0613 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/06

Abstract: Of any one of a transmission method X of transmitting modulated signal A and modulated signal B including the same data from a plurality of antennas and a transmission method Y of transmitting modulated signal A and modulated signal B having different data from the plurality of antennas, a base station apparatus does not change the transmission method during data transmission and changes only the modulation scheme. The base station apparatus transmits modulated signal A and modulated signal B to a communication terminal apparatus using the determined transmission method and modulation scheme. In this way, it is possible to improve data transmission efficiency when transmitting data using the plurality of antennas.

Abstract translation: 从多个天线发送调制信号A和包含相同数据的调制信号B的发送方法X和从多个天线发送具有不同数据的调制信号A和调制信号B的发送方式Y中的任一种， 基站装置在数据发送期间不改变发送方式，只改变调制方式。 基站装置使用所确定的发送方法和调制方式向调制信号A和调制信号B发送到通信终端装置。 以这种方式，可以在使用多个天线发送数据时提高数据传输效率。

公开(公告)号：US20190199495A1

公开(公告)日：2019-06-27

申请号：US16287696

申请日：2019-02-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L5/00 ,  H04B7/06 ,  H04L27/26 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L25/02 ,  H04W52/52 ,  H04L27/18 ,  H04L29/06 ,  H04L1/06

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L25/0204 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.

公开(公告)号：USRE47356E1

公开(公告)日：2019-04-16

申请号：US14571857

申请日：2014-12-16

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

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

公开(公告)号：US20170310503A1

公开(公告)日：2017-10-26

申请号：US15648218

申请日：2017-07-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L25/02 ,  H04L27/26 ,  H04B7/06 ,  H04L1/06 ,  H04L5/00 ,  H04L27/14 ,  H04L27/12 ,  H04L27/06 ,  H04L27/04 ,  H04L29/06 ,  H04B7/08 ,  H04L27/18 ,  H04B7/0413

CPC classification number: H04L25/0204 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L5/0048 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.

公开(公告)号：US09735986B2

公开(公告)日：2017-08-15

申请号：US15145703

申请日：2016-05-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04B7/02 ,  H04L25/02 ,  H04L1/06 ,  H04L27/04 ,  H04L27/12 ,  H04L27/14 ,  H04L27/06 ,  H04L5/00 ,  H04L29/06 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/08 ,  H04L27/26 ,  H04L27/18

CPC classification number: H04L25/0204 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L5/0048 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.

公开(公告)号：US09584196B2

公开(公告)日：2017-02-28

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 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04L27/00 ,  H04B7/06 ,  H04W52/42

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。

公开(公告)号：US09363124B2

公开(公告)日：2016-06-07

申请号：US14845132

申请日：2015-09-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L27/00 ,  H04L27/26 ,  H04L1/06 ,  H04L27/04 ,  H04L27/12 ,  H04L27/14 ,  H04L27/06 ,  H04L5/00 ,  H04L29/06 ,  H04L27/18 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L25/02

CPC classification number: H04L25/0204 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/082 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/003 ,  H04L5/0048 ,  H04L25/0206 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2659 ,  H04L27/2691 ,  H04L27/2695 ,  H04L69/22 ,  H04W52/52 ,  H04W72/0453

Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals.