公开(公告)号：US09935799B2

公开(公告)日：2018-04-03

申请号：US15404910

申请日：2017-01-12

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L27/00 ,  H04B7/0417 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04B7/0413 ,  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.

公开(公告)号：US09374195B2

公开(公告)日：2016-06-21

申请号：US14678389

申请日：2015-04-03

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi

IPC: H03M13/00 ,  G06F11/00 ,  H04L1/00 ,  H03M13/25 ,  H03M13/27 ,  H03M13/13 ,  H03M13/29 ,  H04L1/06 ,  H04L5/00

CPC classification number: H04L1/0041 ,  H03M13/13 ,  H03M13/255 ,  H03M13/2721 ,  H03M13/2909 ,  H04L1/0003 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/0656 ,  H04L5/0023

Abstract: A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased.

Abstract translation: 一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。 编码部分将传输数据转移到块编码处理以形成块编码数据。 调制部分调制块编码数据以形成数据符号; 并且排列（交织）部分以这样的方式布置（交织）块编码数据，使得包括它们各自的单个不同数据符号的编码块的块内编码数据在一起，然后提供所安排的（交织的 ）块编码数据到调制部分。 以这种方式，可以提供一种发射机装置，即使当调制多值的数量增加时，使用相对简单的结构来抑制突发错误，而不改变编码块的块大小。

公开(公告)号：US09160596B2

公开(公告)日：2015-10-13

申请号：US14616482

申请日：2015-02-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L27/00 ,  H04L27/26 ,  H04L5/00

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.

Abstract translation: 发送装置包括生成第一OFDM调制信号和第二OFDM调制信号的多个正交频分复用（OFDM）调制信号发生器。 发送装置还包括在相同频带中从第一天线发送第一OFDM调制信号和来自第二天线的第二OFDM调制信号的发送器。 提供了一种接收装置，其包括接收多个OFDM调制信号的多个天线; 多个OFDM解调器，其使用傅里叶变换将所述多个OFDM调制信号变换为多个接收信号; 估计器，其使用所述多个接收信号中包含的用于解调的一个或多个符号来输出失真估计信号; 以及解调器，其使用失真估计信号来补偿接收信号的失真，并且解调包含在接收信号中的数据符号。

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。

公开(公告)号：US11277226B2

公开(公告)日：2022-03-15

申请号：US16859731

申请日：2020-04-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Kazuaki Takahashi

IPC: H04L1/00 ,  H04L1/22 ,  H04L5/00 ,  H04L27/00 ,  H03M13/15 ,  H04L27/36 ,  H04L27/38 ,  H04L27/26

Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.

公开(公告)号：US11050592B2

公开(公告)日：2021-06-29

申请号：US16709360

申请日：2019-12-10

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L27/00 ,  H04B7/0417 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/06 ,  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.

公开(公告)号：US10680752B2

公开(公告)日：2020-06-09

申请号：US15621752

申请日：2017-06-13

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yutaka Murakami ,  Shutai Okamura ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Kazuaki Takahashi

IPC: H04L1/00 ,  H04L1/22 ,  H04L5/00 ,  H04L27/00 ,  H03M13/15 ,  H04L27/36 ,  H04L27/38 ,  H04L27/26

Abstract: A transmitter apparatus wherein a simple structure is used to successfully suppress the degradation of error rate performance that otherwise would be caused by fading or the like. There are included encoding parts that encode transport data; a mapping part that performs such a mapping that encoded data sequentially formed by the encoding parts are not successively included in the same symbol, thereby forming data symbols; and a symbol interleaver that interleaves the data symbols. In this way, a low computational complexity can be used to perform an interleaving process equivalent to a bit interleaving process to effectively improve the reception quality at a receiving end.

公开(公告)号：US10547479B2

公开(公告)日：2020-01-28

申请号：US16296568

申请日：2019-03-08

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L27/00 ,  H04B7/0417 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/06 ,  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.

公开(公告)号：US10277436B2

公开(公告)日：2019-04-30

申请号：US15902371

申请日：2018-02-22

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L27/00 ,  H04B7/0417 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/06 ,  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.

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.