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    Transmission signal generation apparatus, transmission signal generation method, reception signal apparatus, and reception signal method
    1.
    发明授权
    Transmission signal generation apparatus, transmission signal generation method, reception signal apparatus, and reception signal method 有权

    公开(公告)号：US10270574B2

    公开(公告)日：2019-04-23

    申请号：US16059093

    申请日：2018-08-09

    申请人： Wi-Fi One, LLC

    发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi

    IPC分类号： H04L5/00 ,  H04B7/0413 ,  H04L27/26 ,  H04L27/00 ,  H04L25/02 ,  H04J13/18

    摘要： A transmission apparatus maps a first stream of input data to first complex symbols in serial format and convert them into first complex symbols in parallel format. They are inverse Fourier transformed into OFDM signals associated with multiple subcarriers that are transmitted via a first antenna over the multiple subcarriers in a same frequency band over a same time period that includes a same set of time slots. First pilot information is transmitted via a first antenna on a first one of a plurality of pilot subcarriers during the same set of time slots, and second pilot information is sent via a first antenna on a second one of a plurality of pilot subcarriers during the same set of time slots. The second pilot information is different from the first pilot information. A second stream of input data is similarly transformed to form second OFDM signals transmit via a second antenna over the multiple subcarriers in the same frequency band over the same time period that includes the same set of time slots. The first pilot information is transmitted via the second antenna on the second pilot subcarrier during the set of same time slots, and the second pilot information is transmitted on one of the pilot subcarriers during the same set of time slots.

    Transmission method and transmission apparatus
    2.
    发明授权
    Transmission method and transmission apparatus 有权

    公开(公告)号：US10243626B2

    公开(公告)日：2019-03-26

    申请号：US15672335

    申请日：2017-08-09

    申请人： Wi-Fi One, LLC

    发明人： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC分类号： H04L27/00 ,  H04B7/0413 ,  H04B7/06 ,  H04L1/06

    摘要： A transmission apparatus includes processing circuitry that generates a first data sequence representing first data or a second data sequence representing second data different from the first data and selects the first data sequence as an output data sequence. A modulation scheme is determined from a plurality of modulation schemes, and the output data sequence is modulated with the determined modulation scheme. Transmission circuitry transmits the modulated output data sequence. A first time interval associated with selecting the first data sequence for the output data sequence is longer than a second time interval associated with determining the determined modulation scheme.

    Transmission apparatus, reception apparatus and digital radio communication method
    6.
    发明授权
    Transmission apparatus, reception apparatus and digital radio communication method 有权

    公开(公告)号：US10270631B2

    公开(公告)日：2019-04-23

    申请号：US15363162

    申请日：2016-11-29

    申请人： Wi-Fi One, LLC

    发明人： Yutaka Murakami ,  Shinichiro Takabayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC分类号： H04L27/12 ,  H04L1/00 ,  H04L27/20 ,  H04L27/34 ,  H04B1/38

    摘要： A transmission apparatus and method include modulating a transmission signal using a first modulation scheme selected from a plurality of modulation schemes to generate a first symbol sequence. A second symbol, generated using a phase shift keying (PSK) modulation scheme, is inserted in the first symbol sequence to generate a first modulation signal for transmission. A second modulation signal is received that includes a third symbol generated using a PSK modulation scheme and inserted in a second symbol sequence generated using a second modulation scheme selected from the plurality of modulation schemes. The third symbol is extracted from the received modulation signal. A transmission path associated with the received modulation signal is estimated using the third symbol. A received data signal from the second symbol sequence included in the received modulation signal is output using the estimated transmission path.