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公开(公告)号：US20220158762A1
公开(公告)日：2022-05-19
申请号：US17590761
申请日：2022-02-01
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
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.
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公开(公告)号：US20200266930A1
公开(公告)日：2020-08-20
申请号：US16859731
申请日：2020-04-27
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
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.
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公开(公告)号：US20240113810A1
公开(公告)日：2024-04-04
申请号：US18532791
申请日：2023-12-07
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
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.
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公开(公告)号：US20180145792A1
公开(公告)日：2018-05-24
申请号：US15621752
申请日：2017-06-13
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
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.
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公开(公告)号：US20170126446A1
公开(公告)日：2017-05-04
申请号：US15404910
申请日：2017-01-12
Inventor： Yutaka Murakami , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
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.
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Patent Agency Ranking
6.发明申请TRANSMITTING APPARATUS, RECEIVING APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD 审中-公开发送装置，接收装置，传输方法和接收方法公开(公告)号：US20170005752A1
公开(公告)日：2017-01-05
申请号：US15266319
申请日：2016-09-15
Inventor： Yutaka MURAKAMI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
CPC classification number: H04L1/0041 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0039 , H04L1/0058 , H04L1/0079 , H04L1/0083 , H04L1/08 , H04L27/0008 , H04L27/0012 , H04L27/20 , H04L27/2608 , Y02D50/10
Abstract: A transmission frame generating device generates a transmission frame. The generating device includes a control information signal generator which generates a modulation method control signal indicating a modulation method used for a data signal and an error correction method control signal indicating an error correction method used for the data signal and a frame former which forms the transmission frame by arranging a training signal, the data signal, the modulation method control signal and the error correction method control signal on a plurality of subcarriers on a frequency axis. The modulation method control signal being repeatedly and discretely arranged on a first multiple of the plurality of subcarriers on the frequency axis and the error correction method control signal being repeatedly and discretely arranged on a second multiple of the plurality of the subcarriers on the frequency axis.
Abstract translation: 传输帧生成装置生成传输帧。 该生成装置包括控制信息信号发生器，该控制信息信号发生器产生指示用于数据信号的调制方式的调制方式控制信号，以及指示用于数据信号的纠错方法的纠错方法控制信号，以及形成传输的帧形成器 通过在频率轴上的多个子载波上布置训练信号，数据信号，调制方法控制信号和纠错方法控制信号。 所述调制方式控制信号被重复且离散地布置在所述频率轴上的所述多个子载波的第一倍数上，并且所述纠错方法控制信号被重复和离散地布置在所述频率轴上的所述多个副载波的第二倍数上。
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7.发明申请公开(公告)号：US20150365129A1
公开(公告)日：2015-12-17
申请号：US14792917
申请日：2015-07-07
Inventor： Yutaka MURAKAMI , Shinichiro TAKABAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC: H04B1/711 , H04B1/7075 , H04L27/26 , H04L5/00 , H04L27/36
CPC classification number: H04B1/711 , H04B1/707 , H04B1/7075 , H04B2201/70705 , H04B2201/70716 , H04B2201/70728 , H04J13/00 , H04L1/0003 , H04L1/0023 , H04L5/0007 , H04L5/0016 , H04L5/0044 , H04L5/0048 , H04L27/18 , H04L27/227 , H04L27/2602 , H04L27/2662 , H04L27/34 , H04L27/364 , H04L27/38 , H04L2027/004 , H04L2027/0061
Abstract: A transmitting apparatus includes an OFDM modulator that generates a first modulation symbol by modulating a first information signal using a first modulation scheme, a signal point of the first modulated information signal being arranged at a first position in an in-phase quadrature-phase plane and a second modulation symbol by modulating a second information signal using the first modulation scheme, and by changing a second position at which a signal point of the modulated second information signal is arranged to a third position in the in-phase quadrature-phase plane, wherein the third position is different from the first position. An OFDM modulation signal includes the first modulation symbol and the second modulation symbol, wherein the OFDM modulation signal comprises a plurality of subcarriers. A transmitter transmits the OFDM modulation signal.
Abstract translation: 发送装置包括OFDM调制器，其通过使用第一调制方式调制第一信息信号来生成第一调制符号，第一调制信息信号的信号点被布置在同相正交相平面中的第一位置，以及 第二调制符号，通过使用第一调制方案调制第二信息信号，并且通过改变调制的第二信息信号的信号点被布置在同相正交相平面中的第三位置的第二位置，其中 第三个位置与第一个位置不同。 OFDM调制信号包括第一调制符号和第二调制符号，其中OFDM调制信号包括多个子载波。 发射机发送OFDM调制信号。
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公开(公告)号：US20180183635A1
公开(公告)日：2018-06-28
申请号：US15902371
申请日：2018-02-22
Inventor： Yutaka MURAKAMI , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Akihiko MATSUOKA
IPC: H04L27/00 , H04B7/0413 , H04L5/00
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.
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9.发明申请TRANSMITTING APPARATUS, RECEIVING APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD 审中-公开发送装置，接收装置，传输方法和接收方法公开(公告)号：US20150058703A1
公开(公告)日：2015-02-26
申请号：US14529802
申请日：2014-10-31
Inventor： Yutaka MURAKAMI , Katsuaki ABE , Masayuki ORIHASHI , Akihiko MATSUOKA
CPC classification number: H04L1/0041 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0039 , H04L1/0058 , H04L1/0079 , H04L1/0083 , H04L1/08 , H04L27/0008 , H04L27/0012 , H04L27/20 , H04L27/2608 , Y02D50/10
Abstract: A transmission frame generating device includes a control information signal generator and a frame former. The control information signal generator generates a modulation method information signal indicating a modulation method of a data signal and an error correction method information signal indicating an error correction method of the data signal. The frame former forms the transmission frame by repeating and discretely arranging the same modulation method information signal on a first multiple of a plurality of subcarriers on a frequency axis and by repeating and discretely arranging the same error correction method information signal on a second multiple of the plurality of the subcarriers on the frequency axis.
Abstract translation: 传输帧产生装置包括控制信息信号发生器和帧形成器。 控制信息信号发生器产生指示数据信号的调制方法的调制方法信息信号和指示数据信号的纠错方法的纠错方法信息信号。 帧载体通过在频率轴上的多个副载波的第一倍数上重复并离散地布置相同的调制方式信息信号，并通过重复并离散地布置相同的纠错方法信息信号来形成传输帧， 频率轴上的多个副载波。
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公开(公告)号：US20230124557A1
公开(公告)日：2023-04-20
申请号：US18068464
申请日：2022-12-19
Inventor： Yutaka MURAKAMI , Shutai OKAMURA , Kiyotaka KOBAYASHI , Masayuki ORIHASHI , Kazuaki TAKAHASHI
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.
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