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175 条记录 (耗时 0.027 秒)

    PRE-CODING METHOD AND TRANSMITTER
    3.
    发明申请
    PRE-CODING METHOD AND TRANSMITTER 有权

    公开(公告)号：US20230036708A1

    公开(公告)日：2023-02-02

    申请号：US17481657

    申请日：2021-09-22

    申请人： Sun Patent Trust

    发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    IPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04J11/00 ,  H04L25/03 ,  H04L1/06 ,  H04B7/06

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

    DATA PROCESSING METHOD, PRECODING METHOD, AND COMMUNICATION DEVICE
    6.
    发明申请
    DATA PROCESSING METHOD, PRECODING METHOD, AND COMMUNICATION DEVICE 有权

    公开(公告)号：US20210234629A1

    公开(公告)日：2021-07-29

    申请号：US17231469

    申请日：2021-04-15

    申请人： Sun Patent Trust

    发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    IPC分类号： H04L1/00 ,  H03M13/25 ,  H04L1/08 ,  H04B7/0413

    摘要： An encoder outputs a first bit sequence having N bits. A mapper generates a first complex signal s1 and a second complex signal s2 with use of bit sequence having X+Y bits included in an input second bit sequence, where X indicates the number of bits used to generate the first complex signal s1, and Y indicates the number of bits used to generate the second complex signal s2. A bit length adjuster is provided after the encoder, and performs bit length adjustment on the first bit sequence such that the second bit sequence has a bit length that is a multiple of X+Y, and outputs the first bit sequence after the bit length adjustment as the second bit sequence. As a result, a problem between a codeword length of a block code and the number of bits necessary to perform mapping by a set of modulation schemes is solved.

    SIGNAL GENERATING METHOD AND SIGNAL GENERATING APPARATUS
    7.
    发明申请
    SIGNAL GENERATING METHOD AND SIGNAL GENERATING APPARATUS 有权

    公开(公告)号：US20210234582A1

    公开(公告)日：2021-07-29

    申请号：US17227561

    申请日：2021-04-12

    申请人： Sun Patent Trust

    发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    IPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0426 ,  H04L27/34 ,  H04L25/02 ,  H04L5/00 ,  H04L27/20 ,  H04L27/36 ,  H04B1/00

    摘要： A transmission apparatus that (i) generates a Quadrature Phase Shift Keying (QPSK) modulation signal s1(t) by applying a QPSK modulation scheme to a first data sequence, (ii) generates a 16-Quadrature Amplitude Modulation (QAM) modulation signal s2(t) by applying a 16-QAM modulation scheme to a second data sequence, (iii) generates a transmission signal z1(t) and a second transmission signal z2(t) by applying a phase hopping process, a precoding process, and a power adjust process to the QPSK modulation signal s1(t) and the 16-QAM modulation signal s2(t), wherein an average transmission power of the 16-QAM modulation signal s2(t) being the same as an average transmission power of the QPSK modulation signal s1(t), and (iv) transmits the transmission signal z1(t) from a first antenna at a first time and a first frequency and the second transmission signal z2(t) from a second antenna at the first time and the first frequency.

    TRANSMISSION METHOD, TRANSMISSION DEVICE, RECEPTION METHOD, AND RECEPTION DEVICE
    9.
    发明申请
    TRANSMISSION METHOD, TRANSMISSION DEVICE, RECEPTION METHOD, AND RECEPTION DEVICE 有权

    公开(公告)号：US20210184731A1

    公开(公告)日：2021-06-17

    申请号：US17168955

    申请日：2021-02-05

    申请人： Sun Patent Trust

    发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    IPC分类号： H04B7/0456 ,  H04L1/00 ,  H04L5/00 ,  H04L25/03 ,  H04L25/49 ,  H04L27/20 ,  H04L27/22 ,  H04B7/0417 ,  H04L27/26

    摘要： Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N−1, and N being an integer at least two, generating a first precoded signal z1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.