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    Communication apparatus and communication system
    131.
    再颁专利
    Communication apparatus and communication system 有权

    公开(公告)号：USRE47356E1

    公开(公告)日：2019-04-16

    申请号：US14571857

    申请日：2014-12-16

    Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

    Inventor： Masayuki Orihashi ,  Yutaka Murakami ,  Katsuaki Abe ,  Akihiko Matsuoka

    IPC: H04W12/04 ,  H04K1/00 ,  H04B1/7113 ,  H04L9/08 ,  H04K1/10 ,  H04B1/7115 ,  H04K1/08

    Abstract: A communication apparatus includes a reference signal generating section, a transmitting section, a propagation estimating section, a first data acquiring section, and a decoding section. The reference signal generating section generates a first reference signal to enable a communicating party to estimate a propagation environment. The transmitting section transmits the first reference signal. The propagation estimating section estimates a first propagation estimation value of the propagation environment using a second reference signal transmitted from the communicating party. The first data acquiring section generates first data using the first propagation estimation value. The decoding section decodes a transmission signal encoded using a second propagation estimation value that is estimated by the communicating party using the first reference signal, to obtain second data using the first data.

    Communication apparatus and communication method
    133.
    发明授权
    Communication apparatus and communication method 有权

    公开(公告)号：US10158520B2

    公开(公告)日：2018-12-18

    申请号：US15925438

    申请日：2018-03-19

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Yutaka Murakami

    IPC: H04L27/26 ,  H04B7/04 ,  H04J3/00 ,  H04J11/00 ,  H04B7/0452 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04

    Abstract: A communication apparatus includes a signal processor that determines a transmission timing and/or a frequency, wherein the transmission timing and/or the frequency for each of a plurality of terminals is located within a frame corresponding to a communicable range. The communication apparatus includes a weighting synthesizer that applies weights to each of a plurality of modulated symbol sequences and transmits the weighted plurality of modulated symbol sequences from an antenna element. The number of modulated symbol sequences that can be simultaneously transmitted in the same period of time and the same frequency band is different depending on communicable ranges in each of the plurality of frames, each of the plurality of frames including subframes. The signal processor allocates, to each of the subframes, one or more modulated symbol sequences, the number of which is equal to or fewer than the number of modulated symbol sequences that can be simultaneously transmitted.

    Encoding method, and decoding method
    140.
    发明授权
    Encoding method, and decoding method 有权

    公开(公告)号：US09356624B2

    公开(公告)日：2016-05-31

    申请号：US14722490

    申请日：2015-05-27

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Yutaka Murakami

    IPC: H03M13/03 ,  H03M13/11 ,  H03M13/00

    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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