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57 条记录 (耗时 0.126 秒)

    Front end processor for data receiver and nonlinear distortion equalization method
    1.
    发明授权
    Front end processor for data receiver and nonlinear distortion equalization method 有权
    数据接收机前端处理器和非线性失真均衡方法

    公开(公告)号：US07142616B2

    公开(公告)日：2006-11-28

    申请号：US10104481

    申请日：2002-03-25

    申请人： Mikihiro Ouchi ,  Ippei Kanno ,  Hisaya Kato

    发明人： Mikihiro Ouchi ,  Ippei Kanno ,  Hisaya Kato

    IPC分类号： H03K9/00

    CPC分类号： H04L27/2647 ,  H04L27/38

    摘要： An OFDM baseband signal that has undergone a synchronization carrier modulation or a differential carrier modulation is inputted to a complex signal converter for nonlinear distortion equalization so as to be converted according to the N-th order function conversion characteristics (N>1). Then, nonlinear distortion in the OFDM baseband signal is compensated for. At this time, the following is used as a conversion equation: y(n)=x(n)+Σam(n)xm(n)(m>1) wherein the values of the input signal, the output signal and the coefficient for m-th order distortion equalization at time n are, respectively, x(n), y(n) and am(n).

    摘要翻译： 已经经历了同步载波调制或差分载波调制的OFDM基带信号被输入到用于非线性失真均衡的复信号转换器，以便根据N阶函数转换特性（N> 1）进行转换。 然后，补偿OFDM基带信号中的非线性失真。 此时，将以下内容用作转换公式：<？in-line-formula description =“In-line formula”end =“lead”？> y（n）= x（n）+ Sigmaa （n）x（n）（m> 1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中， 时间n的输入信号，输出信号和m阶失真均衡的系数分别为x（n），y（n）和m（n）。

    Precoding method, and transmitting device
    2.
    发明授权
    Precoding method, and transmitting device 有权
    预编码方法和发送装置

    公开(公告)号：US09287946B2

    公开(公告)日：2016-03-15

    申请号：US13810783

    申请日：2011-12-01

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L25/03 ,  H04B7/06

    CPC分类号： H04B7/0456 ,  H04B7/0469 ,  H04B7/06 ,  H04B7/0606 ,  H04B7/0689 ,  H04L25/03898

    摘要： Disclosed is 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： 公开了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。

    Signal generating method and signal generating apparatus
    5.
    发明授权
    Signal generating method and signal generating apparatus 有权
    信号产生方法和信号发生装置

    公开(公告)号：US09054757B2

    公开(公告)日：2015-06-09

    申请号：US14241130

    申请日：2012-09-06

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L5/00

    CPC分类号： H04B7/0469 ,  H04B1/0057 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/0465 ,  H04L5/00 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0222 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    摘要： A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes performing precoding on both signals using a fixed precoding matrix and regularly changing the phase of at least one of the signals. In this method, the power ratio between a plurality of signals transmitted from a plurality of antennas at the same frequency and at the same time differs from the power ratio between a plurality of pilot signals transmitted from the plurality of antennas at the same frequency and at the same time, whereby the accuracy of channel estimation by a reception device is improved.

    摘要翻译： 用于以相同频率同时发射第一调制信号和第二调制信号的传输方法包括使用固定预编码矩阵对两个信号执行预编码，并定期改变至少一个信号的相位。 在该方法中，以相同频率和同一时间从多个天线发送的多个信号之间的功率比与在相同频率和相同频率下从多个天线发送的多个导频信号之间的功率比不同 同时，提高了接收装置的信道估计精度。

    Pre-coding method and pre-coding device
    6.
    发明授权
    Pre-coding method and pre-coding device 有权
    预编码方式和预编码装置

    公开(公告)号：US09008225B2

    公开(公告)日：2015-04-14

    申请号：US14111334

    申请日：2012-04-18

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L1/00 ,  H04L1/06 ,  H04L1/20

    CPC分类号： H04B7/0465 ,  H04B1/713 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0615 ,  H04L1/0009 ,  H04L1/005 ,  H04L1/0643 ,  H04L1/20

    摘要： Disclosed is a precoding method comprising the steps of: generating a first coded block and a second coded block with use of a predetermined error correction block coding scheme; generating a first precoded signal z1 and a second precoded signal z2 by performing a precoding process, which corresponds to a matrix selected from among the N matrices F[i], on a first baseband signal s1 generated from the first coded block and a second baseband signal s2 generated from the second coded block, respectively; the first precoded signal z1 and the second precoded signal z2 satisfying (z1, z2)T=F[i](s1, s2)T; and changing both of or one of a power of the first precoded signal z1 and a power of the second precoded signal z2, such that an average power of the first precoded signal z1 is less than an average power of the second precoded signal z2.

    摘要翻译： 公开了一种预编码方法，包括以下步骤：利用预定的纠错块编码方案产生第一编码块和第二编码块; 通过对从第一编码块产生的第一基带信号s1和第二编码块产生第一基带信号s1，执行对应于从N个矩阵F [i]中选择的矩阵的预编码处理，生成第一预编码信号z1和第二预编码信号z2 分别从第二编码块产生的信号s2; 第一预编码信号z1和第二预编码信号z2满足（z1，z2）T = F [i]（s1，s2）T; 并且改变第一预编码信号z1的功率和第二预编码信号z2的功率中的两者或一者，使得第一预编码信号z1的平均功率小于第二预编码信号z2的平均功率。

    Precoding method, precoding device
    7.
    发明授权
    Precoding method, precoding device 有权
    预编码方法，预编码装置

    公开(公告)号：US08971439B2

    公开(公告)日：2015-03-03

    申请号：US13985707

    申请日：2012-02-17

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/02 ,  H04B7/04 ,  H04L25/03

    CPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04L25/03171 ,  H04L25/03942 ,  H04L25/03949 ,  H04L27/18 ,  H04L27/2626 ,  H04L27/34

    摘要： Disclosed is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time. According to the precoding method, one matrix is selected from among matrices defining a precoding process that is performed on the plurality of baseband signals by hopping between the matrices. A first baseband signal and a second baseband signal relating to a first coded block and a second coded block generated by using a predetermined error correction block coding scheme satisfy a given condition.

    摘要翻译： 公开了一种用于从多个基带信号生成同时以相同频带发送的多个预编码信号的预编码方法。 根据预编码方法，从定义通过在矩阵之间跳跃对多个基带信号执行的预编码处理的矩阵中选择一个矩阵。 与通过使用预定的纠错块编码方案生成的第一编码块和第二编码块相关的第一基带信号和第二基带信号满足给定条件。

    Transmitter, transmission method, receiver, reception method, program, and integrated circuit
    8.
    发明授权
    Transmitter, transmission method, receiver, reception method, program, and integrated circuit 有权
    发射机，传输方式，接收机，接收方式，程序和集成电路

    公开(公告)号：US08953695B2

    公开(公告)日：2015-02-10

    申请号：US13519453

    申请日：2010-12-22

    申请人： Mikihiro Ouchi ,  Noritaka Iguchi

    发明人： Mikihiro Ouchi ,  Noritaka Iguchi

    IPC分类号： H04L27/00 ,  H04L25/03 ,  H04L1/00 ,  H04L27/26

    CPC分类号： H04L25/03866 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/2613 ,  H04L27/2615 ,  H04L27/2626 ,  H04L27/2647

    摘要： A transmitter 100 includes an L1 signaling data coder 111. In the L1 signaling data coder 111, an L1 signaling data generator 1021 converts transmission parameters into L1-pre signaling data and L1-post signaling data and outputs the L1-pre signaling data and the L1-post signaling data, an energy dispersion unit 121 performs energy dispersion on the L1-pre signaling data and the L1-post signaling data in order, and an L1 error correction coder 1022 performs error correction coding, based on BCH coding and LDPC coding, on the energy-dispersed L1-pre signaling data. This allows for randomization of a large bias in mapping data of the L1-pre signaling data and the L1-post signaling data, thus solving the problem of concentration of power in a specific sample within P2 symbols.

    摘要翻译： 发送器100包括L1信令数据编码器111.在L1信令数据编码器111中，L1信令数据生成器1021将发送参数转换为L1预信令数据和L1后信令数据，并输出L1预信令数据 L1后信令数据，能量色散单元121按顺序对L1预信令数据和L1后信令数据执行能量分散，并且L1纠错编码器1022基于BCH编码和LDPC编码进行纠错编码 ，关于能量分散的L1预信令数据。 这允许L1-pre信令数据和L1后信令数据的映射数据中的大偏差的随机化，从而解决P2符号内的特定样本中的功率集中问题。