利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

47 条记录 (耗时 0.044 秒)

    PRECODING METHOD, TRANSMITTING DEVICE, AND RECEIVING DEVICE
    1.
    发明申请
    PRECODING METHOD, TRANSMITTING DEVICE, AND RECEIVING DEVICE 审中-公开
    预测方法，发送设备和接收设备

    公开(公告)号：US20120300877A1

    公开(公告)日：2012-11-29

    申请号：US13478634

    申请日：2012-05-23

    申请人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    发明人： Yutaka MURAKAMI ,  Tomohiro KIMURA ,  Mikihiro OUCHI

    IPC分类号： H04L25/49

    CPC分类号： H04B7/0456 ,  H04L1/0045 ,  H04L1/0075 ,  H04L25/03942 ,  H04L25/03955

    摘要： 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.

    摘要翻译： 一种用于同时发送相同频率的第一调制信号和第二调制信号的传输方案。 根据传输方案，预编码权重乘法单元在第一映射之后将预编码权重乘以基带信号和在第二映射之后将基带信号相乘，并输出第一调制信号和第二调制信号。 在预编码权重乘法单元中，规则地跳跃预编码权重。

    TRANSMISSION METHOD, TRANSMISSION APPARATUS, RECEPTION METHOD, AND RECEPTION APPARATUS
    4.
    发明申请
    TRANSMISSION METHOD, TRANSMISSION APPARATUS, RECEPTION METHOD, AND RECEPTION APPARATUS 有权
    传输方法，传输装置，接收方法和接收装置

    公开(公告)号：US20120314809A1

    公开(公告)日：2012-12-13

    申请号：US13590779

    申请日：2012-08-21

    申请人： Yutaka MURAKAMI ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

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

    IPC分类号： H04L27/00

    CPC分类号： H04B7/0413 ,  H04B7/0608 ,  H04B7/0613 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/06

    摘要： Of any one of transmission method X of transmitting modulated signal A and modulated signal B including the same data from a plurality of antennas and transmission method Y of transmitting modulated signal A and modulated signal B having different data from the plurality of antennas, base station apparatus 201 does not change the transmission method during data transmission and changes only the modulation scheme. Base station apparatus 201 transmits modulated signal A and modulated signal B to communication terminal apparatus 251 using the determined transmission method and modulation scheme. In this way, it is possible to improve data transmission efficiency when transmitting data using the plurality of antennas.

    摘要翻译： 发送调制信号A的发送方法X和包含来自多个天线的相同数据的调制信号B和从多个天线发送调制信号A和调制信号B的数据不同的发送方式Y中的任一种，基站装置 201在数据传输期间不改变传输方法，并且仅改变调制方案。 基站装置201使用确定的发送方法和调制方式向调制信号A和调制信号B发送到通信终端装置251。 以这种方式，可以在使用多个天线发送数据时提高数据传输效率。

    TRANSMISSION APPARATUS AND TRANSMISSION METHOD
    5.
    发明申请
    TRANSMISSION APPARATUS AND TRANSMISSION METHOD 有权
    传输装置和传输方法

    公开(公告)号：US20120304035A1

    公开(公告)日：2012-11-29

    申请号：US13566694

    申请日：2012-08-03

    申请人： Yutaka MURAKAMI ,  Kiyotaka KOBAYASHI ,  Choo Eng YAP

    发明人： Yutaka MURAKAMI ,  Kiyotaka KOBAYASHI ,  Choo Eng YAP

    IPC分类号： H03M13/05 ,  G06F11/10

    CPC分类号： H03M13/1105 ,  H03M13/1102 ,  H03M13/1157 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/2909 ,  H04B7/0413 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044

    摘要： In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.

    摘要翻译： 在使用LDPC码的多天线通信系统中，使用简单的方法通过在不限制可应用的LDPC码的情况下执行更少数据的重传来有效地提高接收质量。 在非重发的情况下，多天线发送装置从两个天线发送由LDPC编码块形成的LDPC编码数据。 在重传的情况下，多天线发送装置使用分集增益高于先前发送的发送方法，仅发送如前所述的LDPC编码数据的一部分。 例如，从单个天线发送仅重新发送的LDPC编码数据的一部分。

    BASE STATION, COMMUNICATION SYSTEM INCLUDING BASE STATION AND TRANSMISSION METHOD
    6.
    发明申请
    BASE STATION, COMMUNICATION SYSTEM INCLUDING BASE STATION AND TRANSMISSION METHOD 审中-公开
    基站，通信系统，包括基站和传输方法

    公开(公告)号：US20120027124A1

    公开(公告)日：2012-02-02

    申请号：US13267992

    申请日：2011-10-07

    申请人： Yutaka MURAKAMI ,  Katsuaki ABE ,  Kiyotaka KOBAYASHI ,  Masayuki ORIHASHI ,  Akihiko MATSUOKA

    发明人： Yutaka MURAKAMI ,  Katsuaki ABE ,  Kiyotaka KOBAYASHI ,  Masayuki ORIHASHI ,  Akihiko MATSUOKA

    IPC分类号： H04L27/00 ,  H04B1/04

    CPC分类号： H04B7/043 ,  H04B7/0621 ,  H04B7/0848 ,  H04B17/24 ,  H04B17/318 ,  H04W52/42

    摘要： Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.

    摘要翻译： 估计从多个天线发送的调制信号的传播路径上的信道波动值，找到以上述信道变动值作为要素而生成的信道变动矩阵的特征值，以将天线接收信号与调制信号相关联， 使用该特征值，接收天线选择，调制信号的组合和对软判决解码值的加权处理，并且调制信号被解调。 通过这种方式，可以基于调制信号（也就是接收设备获得的接收功率的基本接收功率）的有效接收功率进行解调处理，当解调 调制信号），能够提高调制信号的解调精度。

    WIRELESS COMMUNICATIONS APPARATUS AND WIRELESS COMMUNICATIONS METHOD
    8.
    发明申请
    WIRELESS COMMUNICATIONS APPARATUS AND WIRELESS COMMUNICATIONS METHOD 有权
    无线通信装置和无线通信方法

    公开(公告)号：US20110211475A1

    公开(公告)日：2011-09-01

    申请号：US13079384

    申请日：2011-04-04

    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： H04W72/04 ,  H04W24/00

    CPC分类号： H04L5/0058 ,  H04B1/692 ,  H04L1/0001 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0075 ,  H04L5/0092 ,  H04L27/0008 ,  H04L27/2601 ,  H04W72/0453

    摘要： A wireless communication method of a base station that transmits a modulation signal based on an orthogonal frequency division multiplexing scheme to a plurality of terminals. The method includes determining, for each terminal of the plurality of terminals, which subcarrier group or how many symbols along a time axis are to be allocated in a transmission frame, the transmission frame including a first period in which first transmission symbols are arranged and a second period in which second transmission symbols which are different from the first transmission symbols are arranged. The method also includes forming the transmission frame according to a determined allocation, wherein a plurality of symbols on a frequency axis for transmitting N bits (N is a natural number) are arranged within a part of the first period, by using a modulation scheme whereby N bits can be transmitted using one symbol. The method further includes transmitting the modulation signal using the transmission frame.

    摘要翻译： 一种将基于正交频分复用方案的调制信号发送到多个终端的基站的无线通信方法。 该方法包括：确定多个终端中的每个终端在传输帧中哪个子载波组或沿着时间轴分配多少个符号，该传输帧包括其中排列有第一个传输符号的第一周期和 其中布置与第一传输符号不同的第二传输符号的第二周期。 该方法还包括根据所确定的分配来形成传输帧，其中，在第一周期的一部分内，通过使用调制方案将用于发送N位（N为自然数）的频率轴上的多个符号排列在第一周期的一部分内， 可以使用一个符号发送N个位。 该方法还包括使用传输帧发送调制信号。

    COMMUNICATION METHOD, AND TRANSMITTING APPARATUS AND RECEIVING APPARATUS USING THAT COMMUNICATION METHOD
    9.
    发明申请
    COMMUNICATION METHOD, AND TRANSMITTING APPARATUS AND RECEIVING APPARATUS USING THAT COMMUNICATION METHOD 有权
    通信方法，发送装置和使用该通信方法的接收装置

    公开(公告)号：US20110110355A1

    公开(公告)日：2011-05-12

    申请号：US13010150

    申请日：2011-01-20

    申请人： Yutaka MURAKAMI ,  Masayuki ORIHASHI ,  Akihiko MATSUOKA ,  Yoichi NAKAGAWA

    发明人： Yutaka MURAKAMI ,  Masayuki ORIHASHI ,  Akihiko MATSUOKA ,  Yoichi NAKAGAWA

    IPC分类号： H04J1/00

    CPC分类号： H04L5/0048 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0613 ,  H04B7/0837 ,  H04J11/00 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04W72/0453

    摘要： A method for generating a transmission signal to transmit a modulated signal generated using orthogonal frequency division multiplexing, from a transmitting apparatus with a plurality of antennas, toward a plurality of terminals. The method includes assigning transmission data for the plurality of terminals to a plurality of carrier groups, each carrier group including a plurality of carriers and selecting, from the plurality of antennas, an antenna to be used for transmission toward each of the plurality of terminals. As a transmission mode for each of the plurality of carrier groups, a selection is made of one of a first transmission mode, in which one modulated signal is transmitted, and a second transmission mode in which a plurality of modulated signals are transmitted by using the selected antennas. A transmission signal is generated for transmitting the transmission data assigned to the plurality of carrier groups during an identical time period, using the selected transmission mode.

    摘要翻译： 一种用于生成发送信号以从具有多个天线的发送装置向多个终端发送使用正交频分复用生成的调制信号的方法。 该方法包括将多个终端的发送数据分配给多个载波组，每个载波组包括多个载波，并且从多个天线中选择要用于向多个终端中的每一个发送的天线。 作为多个载波组中的每一个的发送模式，选择发送一个调制信号的第一发送模式和通过使用发送方式发送多个调制信号的第二发送模式 选定的天线。 生成发送信号，用于使用所选择的发送模式在相同的时间段期间发送分配给多个载波组的发送数据。

    TRANSMISSION METHOD USING PARITY PACKETS, TRANSMITTER AND REPEATER
    10.
    发明申请
    TRANSMISSION METHOD USING PARITY PACKETS, TRANSMITTER AND REPEATER 有权
    使用奇偶分组，发射机和重发机的传输方法

    公开(公告)号：US20110099446A1

    公开(公告)日：2011-04-28

    申请号：US12913031

    申请日：2010-10-27

    申请人： Yutaka MURAKAMI

    发明人： Yutaka MURAKAMI

    IPC分类号： H03M13/09 ,  H04L1/08 ,  G06F11/10 ,  G06F11/14

    CPC分类号： H04L1/08 ,  G06F11/10 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/1607 ,  H04L1/1819 ,  H04L1/1825 ,  H04L1/1845 ,  H04L1/1887 ,  H04L2001/0093 ,  H04L2001/0097

    摘要： Problem: A packet error rate in a receiver needs to be effectively reduced.Solution to Problem: A transmitter 11 inserts error detection codes into information packets on one-to-one basis, at a certain layer at which signal processing is performed earlier than at a physical layer, to obtain first information packets. The transmitter 11 codes the first information packets at the physical layer to obtain second information packets, and transmits the second information packets. At the certain layer, the transmitter 11 generates parity packets by coding the information packets and inserts the error detection codes into the parity packets on one-to-one basis to obtain first parity packets. The transmitter codes the first parity packets at the physical layer to obtain second parity packets. The transmitter 11 transmits the second parity packets in accordance with a transmission request from each of one or more receivers.

    摘要翻译： 问题：接收机中的数据包错误率需要有效降低。 问题的解决方案：发射机11在比物理层更早执行信号处理的特定层，以一对一的方式将错误检测码插入到信息分组中，以获得第一信息分组。 发射机11对物理层的第一信息分组进行编码，获得第二信息分组，发送第二信息分组。 在特定层，发射机11通过对信息分组进行编码来生成奇偶校验分组，并将错误检测码一一对应地插入到奇偶分组中，以获得第一奇偶分组。 发射机对物理层的第一个奇偶校验分组进行编码，以获得第二个奇偶校验分组。 发射机11根据来自一个或多个接收机中的每一个的发送请求发送第二奇偶分组。