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41.发明申请公开(公告)号：US20180159646A1
公开(公告)日：2018-06-07
申请号：US15580988
申请日：2016-06-01
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04L5/0044 , H04J1/02 , H04J3/02 , H04J11/00 , H04J2011/0016 , H04L1/0075 , H04L5/0007 , H04L5/0053 , H04L27/265
Abstract: Provided are a frame configuring unit configured to configure a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data, and a transmitter which transmits the frame. The frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, a second period in which a plurality of transmission data are transmitted by time division, a third period in which a plurality of transmission data are transmitted by frequency division, and a fourth period in which a plurality of transmission data are transmitted by time division and frequency division.
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公开(公告)号：US20160126979A1
公开(公告)日：2016-05-05
申请号：US14994503
申请日：2016-01-13
Inventor： Yutaka MURAKAMI
CPC classification number: H03M13/116 , H03M13/036 , H03M13/1111 , H03M13/1154 , H03M13/23 , H03M13/616 , H03M13/635
Abstract: An encoding method generates an encoded sequence by performing encoding of a given coding rate according to a predetermined parity check matrix. The predetermined parity check matrix is a first parity check matrix or a second parity check matrix. The first parity check matrix corresponds to a low-density parity check (LDPC) convolutional code using a plurality of parity check polynomials. The second parity check matrix is generated by performing at least one of row permutation and column permutation with respect to the first parity check matrix. An eth parity check polynomial that satisfies zero, of the LDPC convolutional code, is expressible by using a predetermined mathematical formula.
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公开(公告)号：US20160049961A1
公开(公告)日：2016-02-18
申请号：US14926539
申请日：2015-10-29
Inventor： Yutaka MURAKAMI
CPC classification number: H03M13/255 , H03M13/036 , H03M13/09 , H03M13/1111 , H03M13/1154 , H03M13/23 , H03M13/256 , H03M13/616 , H03M13/617 , H03M13/635
Abstract: An encoding method generates an encoded sequence by performing encoding of a given coding rate according to a predetermined parity check matrix. The predetermined parity check matrix is a first parity check matrix or a second parity check matrix. The first parity check matrix corresponds to a low-density parity check (LDPC) convolutional code using a plurality of parity check polynomials. The second parity check matrix is generated by performing at least one of row permutation and column permutation with respect to the first parity check matrix. An eth parity check polynomial that satisfies zero, of the LDPC convolutional code, is expressible by using a predetermined mathematical formula.
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公开(公告)号：US20150244437A1
公开(公告)日：2015-08-27
申请号：US14697882
申请日：2015-04-28
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
IPC: H04B7/04
CPC classification number: H04L27/265 , H04B7/0434 , H04B7/0452 , H04B7/0456 , H04B7/046 , H04B7/0473 , H04B7/0617 , H04B7/0697 , H04B7/08 , H04B7/086 , H04B7/12 , H04L1/0003 , H04L1/0009 , H04L1/0045 , H04L1/0047 , H04L1/005 , H04L1/0057 , H04L1/0061 , H04L1/0071 , H04L1/06 , H04L1/0643 , H04L5/0007 , H04L5/001 , H04L5/0023 , H04L5/0026 , H04L5/0048 , H04L25/0204 , H04L25/0222 , H04L25/0226 , H04L25/0248 , H04L25/03942 , H04L25/067 , H04L27/0008 , H04L27/2602 , H04L27/2626 , H04L27/3405 , H04L2001/0093
Abstract: Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.
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45.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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Patent Agency Ranking
公开(公告)号：US20150003555A1
公开(公告)日：2015-01-01
申请号：US14487696
申请日：2014-09-16
Inventor： Yutaka MURAKAMI , Tomohiro KIMURA , Mikihiro OUCHI
CPC classification number: H04B7/0456 , G06F11/10 , H04B7/0413 , H04B7/0482 , H04B7/0669 , H04B7/0682 , H04B7/0697 , H04L1/0058 , H04L5/005 , H04L25/0224 , H04L25/03898 , H04L25/067 , H04L27/2627 , H04L27/2649 , H04W72/044
Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
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公开(公告)号：US20250063473A1
公开(公告)日：2025-02-20
申请号：US18939238
申请日：2024-11-06
Inventor： Yutaka MURAKAMI
IPC: H04W48/10 , H04L5/00 , H04W72/0453 , H04W72/27
Abstract: This communication device comprises: a control unit that sets information relating to multiband and/or multichannel communication in an extended field of a beacon signal; and a communication unit that transmits the beacon signal.
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公开(公告)号：US20250020765A1
公开(公告)日：2025-01-16
申请号：US18904345
申请日：2024-10-02
Inventor： Yutaka MURAKAMI , Nobuhiko HASHIDA
Abstract: A transmitting apparatus includes: a frame configuration unit that configures a frame conforming to orthogonal frequency-division multiple access (OFDMA) and including a plurality of time-frequency resources, each being a resource defined by time and frequency; and a transmitter that transmits the frame configured by the frame configuration unit over radio waves. The frame configuration unit configures, as the frame, a frame including a resource for communication and a resource for sensing, the resource for communication being a time-frequency resource in which a symbol including communication data is disposed, and the resource for sensing being a time-frequency resource in which a symbol for sensing via radio waves transmitted by the transmitter is disposed.
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公开(公告)号：US20240372599A1
公开(公告)日：2024-11-07
申请号：US18568210
申请日：2022-02-28
Inventor： Yutaka MURAKAMI
IPC: H04B7/06 , H04W8/22 , H04W16/28 , H04W74/0816
Abstract: A terminal comprising: a communication unit for performing wireless communication with a plurality of transmission/reception points on the basis of a first communication scheme; and a control unit for determining, on the basis of detection of a wireless communication signal based on a second communication scheme, a transmission/reception point for performing wireless communication among the plurality of transmission/reception points.
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公开(公告)号：US20240283492A1
公开(公告)日：2024-08-22
申请号：US18652262
申请日：2024-05-01
Inventor： Yutaka MURAKAMI
IPC: H04B7/0413 , H04B7/06 , H04B7/08 , H04L5/00 , H04W84/12
CPC classification number: H04B7/0413 , H04B7/06 , H04B7/08 , H04L5/0007 , H04W84/12
Abstract: In a communication system that includes an access point, a repeater #1, and a repeater #2 and wirelessly communicates with a terminal, the access point wirelessly communicates with the repeater #1 on at least a first channel included in a first frequency band and wirelessly communicates with the repeater #2 on at least a second channel included in a second frequency band different than the first frequency band, the repeater #1 wirelessly communicates with the terminal on at least a third channel included in the second frequency band, and the repeater #2 wirelessly communicates with the terminal on at least a fourth channel included in the first frequency band.
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