公开(公告)号：US20210273832A1

公开(公告)日：2021-09-02

申请号：US17324795

申请日：2021-05-19

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

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：US11894928B2

公开(公告)日：2024-02-06

申请号：US18068464

申请日：2022-12-19

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

CPC classification number: H04L1/0071 ,  H03M13/15 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0059 ,  H04L1/22 ,  H04L5/0007 ,  H04L27/0008 ,  H04L27/36 ,  H04L27/38 ,  H04L27/2647

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：US11362675B2

公开(公告)日：2022-06-14

申请号：US17150766

申请日：2021-01-15

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

IPC: H03M13/00 ,  H03M13/11 ,  H04B7/0413 ,  H04L1/00 ,  H04L1/06 ,  H04L1/18 ,  H04L5/00 ,  H03M13/29

Abstract: 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 (100) transmits, from two antennas (114A,114B), LDPC encoded data formed by LDPC encoding blocks (102A,102B). In a case of a retransmittal, the multi-antenna transmitting apparatus (100) 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 (114A).

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：US20150215070A1

公开(公告)日：2015-07-30

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: H04L1/00 ,  H03M13/29

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：US09059743B2

公开(公告)日：2015-06-16

申请号：US13872787

申请日：2013-04-29

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: G06F11/00 ,  H03M13/00 ,  H03M13/13 ,  H03M13/25 ,  H03M13/27 ,  H04L1/00 ,  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：US20150003564A1

公开(公告)日：2015-01-01

申请号：US14487908

申请日：2014-09-16

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04L1/00 ,  H04L27/38 ,  H04L27/36 ,  H04L5/00 ,  H04L27/00

CPC classification number: H04L1/0071 ,  H03M13/15 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0059 ,  H04L1/22 ,  H04L5/0007 ,  H04L27/0008 ,  H04L27/2647 ,  H04L27/36 ,  H04L27/38

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.

Abstract translation: 一种发射机装置，其中使用简单的结构来成功地抑制否则将由衰落等引起的误码率性能的降级。 包括编码传输数据的编码部分; 执行编码由编码部分顺序形成的数据的映射的映射部分不是连续包含在相同的符号中，从而形成数据符号; 以及交织数据符号的符号交织器。 以这种方式，可以使用低的计算复杂度来执行等同于比特交织处理的交织处理，以有效地提高接收端的接收质量。