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326 条记录 (耗时 0.037 秒)

    Transmission apparatus, reception apparatus and digital radio communication method
    122.
    发明授权
    Transmission apparatus, reception apparatus and digital radio communication method 有权
    发送装置，接收装置和数字无线通信方式

    公开(公告)号：US07545882B2

    公开(公告)日：2009-06-09

    申请号：US11955443

    申请日：2007-12-13

    申请人： Yutaka Murakami ,  Shinichiro Takabayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

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

    IPC分类号： H04L27/36 ,  H04L23/02

    CPC分类号： H04L27/12 ,  H04B1/38 ,  H04L1/0003 ,  H04L1/0006 ,  H04L27/206 ,  H04L27/34 ,  H04L27/3455

    摘要： A transmission apparatus includes a frame configuration determiner that determines a modulation scheme, from among a plurality of modulation schemes. A first symbol generator modulates a transmission signal according the modulation scheme determined by the frame configuration determiner to generate a first symbol, the first symbol being a first quadrature baseband signal. A second symbol generator modulates a pilot signal in accordance with a specific modulation scheme to generate a second symbol. A third symbol generator generates a third symbol to be inserted immediately before or immediately after the second symbol, the third symbol being different from the first symbol. On a signal space diagram, the third symbol generator arranges a signal point of the third symbol on a virtual line that links an origin with a signal point of the second symbol.

    摘要翻译： 传输装置包括从多个调制方案中确定调制方案的帧配置确定器。 第一符号发生器根据由帧配置确定器确定的调制方案来调制发送信号以产生第一符号，第一符号是第一正交基带信号。 第二符号发生器根据特定调制方案调制导频信号以产生第二符号。 第三符号生成器生成紧接在第二符号之前或之后插入的第三符号，第三符号不同于第一符号。 在信号空间图上，第三符号发生器将第三符号的信号点布置在将原点链接到第二符号的信号点的虚拟线上。

    Transmitting apparatus, receiving apparatus, transmission method, and reception method
    124.
    发明申请
    Transmitting apparatus, receiving apparatus, transmission method, and reception method 有权
    发送装置，接收装置，发送方法和接收方法

    公开(公告)号：US20060242526A1

    公开(公告)日：2006-10-26

    申请号：US11413155

    申请日：2006-04-28

    申请人： Yutaka Murakami ,  Katsuaki Abe ,  Masayuki Orihashi ,  Akihiko Matsuoka

    发明人： Yutaka Murakami ,  Katsuaki Abe ,  Masayuki Orihashi ,  Akihiko Matsuoka

    IPC分类号： H04L1/00 ,  H03M13/00 ,  G08C25/00

    CPC分类号： 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

    摘要： A transmitting apparatus controls, for each transmit frame, at least one of a modulation method and an error correction method. The transmitting apparatus forms an information symbol and transmits the information symbol using multiple subcarriers. A modulation method information signal generator generates an information signal relating to a modulation method of the information symbol. An error correction method information signal generator generates an information signal relating to an error correction method of the information symbol. A frame former forms a transmit frame by repeating and discretely arranging at least one of the same modulation method information signal and the same error correction method information signal at the same time within the same frame, and a transmitter transmits the transmit frame.

    摘要翻译： 发送装置对于每个发送帧控制调制方法和纠错方法中的至少一个。 发送装置形成信息符号并使用多个子载波发送信息符号。 调制方式信息信号发生器产生与信息符号的调制方法相关的信息信号。 纠错方法信息信号发生器产生与信息符号的纠错方法相关的信息信号。 帧前体通过在同一帧内同时重复和离散地布置相同的调制方式信息信号和相同的纠错方法信息信号中的至少一个来形成发送帧，并且发送器发送发送帧。

    Communication apparatus and communication method
    125.
    发明申请
    Communication apparatus and communication method 失效
    通信设备和通信方法

    公开(公告)号：US20050180515A1

    公开(公告)日：2005-08-18

    申请号：US10511622

    申请日：2003-08-28

    申请人： Masayuki Orihashi ,  Yutaka Murakami

    发明人： Masayuki Orihashi ,  Yutaka Murakami

    IPC分类号： H04J1/00 ,  H04B1/713 ,  H04B1/7176 ,  H04B7/26 ,  H04J13/00 ,  H04L27/26 ,  H04W72/04 ,  H04K1/10

    CPC分类号： H04B1/719 ,  H04B1/692 ,  H04B1/71632 ,  H04L27/2602 ,  H04L27/2614

    摘要： There are included a transmission modulator (103) for impulse-modulating the data to be transmitted, thereby producing a subcarrier; a subcarrier control section for controlling the subcarrier to be utilized for communication, depending on the amount and significance of information and on the propagation condition of communication; and an antenna section (101) for radiating the subcarrier signal. This structure allows selection of a subcarrier suitable for information to be transmitted and for propagation environment, and hence allows a communication to be performed which exhibits a high flexibility and a high noise immunity. Thus, there can be provided a communication apparatus that can perform a high-quality, high-stability communication exhibiting an improved interfering immunity and that performs a flexible impulse communication.

    摘要翻译： 包括用于对要发送的数据进行脉冲调制的传输调制器，从而产生副载波; 根据信息的数量和重要性以及通信的传播条件，控制用于通信的子载波的子载波控制部分; 以及用于辐射子载波信号的天线部分。 该结构允许选择适于要发送的信息和传播环境的子载波，因此允许执行展现出高灵活性和高抗噪声能力的通信。 因此，可以提供一种可以执行具有改善的干扰抗扰度并且执行灵活的脉冲通信的高质量，高稳定性通信的通信装置。

    Radio communication apparatus capable of switching modulation schemes
    127.
    发明授权
    Radio communication apparatus capable of switching modulation schemes 有权
    能够切换调制方式的无线通信装置

    公开(公告)号：US09590834B2

    公开(公告)日：2017-03-07

    申请号：US13486244

    申请日：2012-06-01

    申请人： Yutaka Murakami ,  Shinichiro Takabayashi ,  Katsuaki Abe ,  Masayuki Orihashi ,  Akihiko Matsuoka

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

    IPC分类号： H04L27/20 ,  H04L27/34 ,  H04B1/04 ,  H04L1/00

    CPC分类号： H04L27/3405 ,  H03F1/02 ,  H03F3/24 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/045 ,  H04L1/0003 ,  H04L27/2082 ,  H04L27/2601 ,  H04L27/34 ,  H04L27/3494 ,  H04L2203/00

    摘要： A transmitting apparatus, includes a signal generator that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes, a first modulation scheme having a higher m-ary modulation value than other modulation schemes and a pilot signal generator generates a pilot signal. An orthogonal frequency division multiplexing (OFDM) signal generator generates an OFDM signal by selecting the modulation signal and the pilot signal according to the frame timing signal. The OFDM signal is converted to a radio signal, is amplified and is transmitted to an antenna. The pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.

    摘要翻译： 一种发送装置，包括：信号发生器，其通过使用多个调制方式之一调制发送数据来生成调制信号;第一调制方式，具有比其他调制方式更高的微分调制值，并且导频信号发生器产生导频 信号。 正交频分复用（OFDM）信号发生器通过根据帧定时信号选择调制信号和导频信号来生成OFDM信号。 OFDM信号被转换为无线电信号，被放大并被发送到天线。 导频信号按照预定的OFDM符号和每个预定的子载波插入OFDM信号中，并且具有比同相正交（IQ）平面中的第一调制方案的最大幅度更低的振幅。

    Transmission apparatus, reception apparatus and digital radio communication method
    128.
    发明授权
    Transmission apparatus, reception apparatus and digital radio communication method 有权
    发送装置，接收装置和数字无线通信方式

    公开(公告)号：US09106486B2

    公开(公告)日：2015-08-11

    申请号：US13613407

    申请日：2012-09-13

    申请人： Yutaka Murakami ,  Shinichiro Takabayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

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

    IPC分类号： H04B15/00 ,  H04L27/12 ,  H04L1/00 ,  H04L27/20 ,  H04L27/34

    CPC分类号： H04L27/12 ,  H04B1/38 ,  H04L1/0003 ,  H04L1/0006 ,  H04L27/206 ,  H04L27/34 ,  H04L27/3455

    摘要： A transmission method includes generating first symbols for transmitting data, a signal point of each of the first symbols on an in-phase and quadrature-phase plane comprising an in-phase component and a quadrature-phase component and generating a second symbol, the second symbol being a pilot symbol. The method further includes selecting an insertion pattern of the second symbol, from a plurality of predetermined insertion patterns, inserting the second symbol in the first symbols based on the selected insertion pattern to generate a transmission signal, and transmitting the transmission signal. The first symbols are generated using a modulation scheme selected from a plurality of modulation schemes.

    摘要翻译： 传输方法包括产生用于发送数据的第一符号，包括同相分量和正交相分量的同相和正交相平面中的每个第一符号的信号点并产生第二符号，第二符号 符号是一个飞行员符号。 该方法还包括从多个预定插入模式中选择第二符号的插入模式，基于所选择的插入模式将第二符号插入到第一符号中以产生发送信号，并发送发送信号。 使用从多个调制方案中选择的调制方案来生成第一符号。