公开(公告)号：US20230308161A1

公开(公告)日：2023-09-28

申请号：US18127239

申请日：2023-03-28

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/06 ,  H04W52/42 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/08 ,  H04L25/03

CPC分类号： H04B7/0697 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/046 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0682 ,  H04B7/0862 ,  H04L25/0391 ,  H04W52/42 ,  H04J11/0033

摘要： A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation sheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US20230300010A1

公开(公告)日：2023-09-21

申请号：US18202410

申请日：2023-05-26

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04L27/26 ,  H04B7/0426 ,  H04B7/06 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03 ,  H04B7/0452 ,  H04B7/08 ,  H04L1/00 ,  H04L27/34 ,  H04B7/0456 ,  H04B7/12 ,  H04L27/00 ,  H04L5/00

CPC分类号： H04L27/2602 ,  H04B7/0434 ,  H04B7/0617 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03942 ,  H04B7/0452 ,  H04B7/0697 ,  H04B7/086 ,  H04L1/005 ,  H04L1/0071 ,  H04L27/3405 ,  H04L27/265 ,  H04B7/0456 ,  H04B7/0473 ,  H04B7/046 ,  H04B7/12 ,  H04L27/0008 ,  H04B7/08 ,  H04L1/0045 ,  H04L5/0007 ,  H04L1/0047 ,  H04L5/0026 ,  H04L1/0061 ,  H05K999/99 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0222 ,  H04L25/0248 ,  H04L25/067

摘要： 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.

公开(公告)号：US20230179284A1

公开(公告)日：2023-06-08

申请号：US18102915

申请日：2023-01-30

申请人： Sun Patent Trust

发明人： Mikihiro OUCHI ,  Yutaka MURAKAMI ,  Tomohiro KIMURA

IPC分类号： H04B7/10 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/0413 ,  H04W52/02 ,  H01Q21/24 ,  H04B1/06

CPC分类号： H04B7/10 ,  H04B7/0469 ,  H04L5/0048 ,  H04B7/0413 ,  H04W52/0209 ,  H01Q21/24 ,  H04B1/06 ,  H04B10/532

摘要： Provided is control information related to polarizations of antennas for MISO communication. The control signal generator generates polarization information indicating whether antennas used for transmission by MISO have only a first polarization or have a second polarization as well as the first polarization. With this structure, the present invention allows for the use of combinations of SISO, MISO and MIMO, taking the polarization of antennas. Furthermore, the present invention enables the receiver to reduce the power consumption.

公开(公告)号：US20230179280A1

公开(公告)日：2023-06-08

申请号：US18102338

申请日：2023-01-27

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/06 ,  H04L1/00 ,  H04B7/08 ,  H04L5/00 ,  H04L5/12 ,  H04L27/20 ,  H04L27/36 ,  H04L27/26

CPC分类号： H04B7/0667 ,  H04B7/0682 ,  H04B7/0697 ,  H04B7/0842 ,  H04L1/0048 ,  H04L1/0071 ,  H04L5/12 ,  H04L5/0023 ,  H04L5/0082 ,  H04L27/20 ,  H04L27/265 ,  H04L27/368 ,  H04L27/2628 ,  H04L27/2634 ,  H04L27/26524

摘要： 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.

公开(公告)号：US20230098197A1

公开(公告)日：2023-03-30

申请号：US17992145

申请日：2022-11-22

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04B7/0413

摘要： 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.

公开(公告)号：US20220311484A1

公开(公告)日：2022-09-29

申请号：US17750626

申请日：2022-05-23

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04L1/00 ,  H04B7/06 ,  H04B1/713

摘要： Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i] (s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.

公开(公告)号：US20220278718A1

公开(公告)日：2022-09-01

申请号：US17733412

申请日：2022-04-29

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04L25/03 ,  H04B7/06

摘要： Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

公开(公告)号：US20220077901A1

公开(公告)日：2022-03-10

申请号：US17522036

申请日：2021-11-09

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04L25/03 ,  H04L27/18 ,  H04L27/26 ,  H04L27/34 ,  H04B7/0413 ,  H04L1/00

摘要： Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.

公开(公告)号：US20210143876A1

公开(公告)日：2021-05-13

申请号：US17151994

申请日：2021-01-19

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04L25/02 ,  H04L25/03 ,  H04L25/06 ,  H04L27/26 ,  H04L1/00 ,  H04L1/06

摘要： All data symbols used in data transmission of a modulated signal are precoded by switching 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 along the frequency axis and the time axis all differ. A modulated signal with such data symbols arranged therein is transmitted.

公开(公告)号：US20210036747A1

公开(公告)日：2021-02-04

申请号：US17072452

申请日：2020-10-16

申请人： Sun Patent Trust

发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

IPC分类号： H04B7/0456 ,  H04L1/00 ,  H04B7/06 ,  H04B1/713

摘要： Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i] (s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.