公开(公告)号：US20140044218A1

公开(公告)日：2014-02-13

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

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。

公开(公告)号：US08416844B2

公开(公告)日：2013-04-09

申请号：US12593127

申请日：2008-03-25

申请人： Mikihiro Ouchi ,  Kenichiro Hayashi ,  Tomohiro Kimura

发明人： Mikihiro Ouchi ,  Kenichiro Hayashi ,  Tomohiro Kimura

IPC分类号： H03K5/159 ,  H03K9/00 ,  H04L7/00

CPC分类号： H04L27/2657 ,  H04L25/0232 ,  H04L27/2662 ,  H04L27/2665

摘要： A synchronization section specifies a position of a guard interval correlation's center of gravity based on a guard interval correlation value, and calculates a carrier-direction shift amount Fshift. An equalization section shifts the passband of a carrier interpolation filter of a carrier interpolation section by the carrier-direction shift amount Fshift calculated by the synchronization section. This shift processing causes the delay profile to be kept in the center of the passband of the carrier interpolation filter, for any FFT window position. This enables transmission path estimation without limiting a range of an FFT window position even if the passband of the carrier interpolation filter is narrower than a guard interval of an OFDM signal.

摘要翻译： 同步部分基于保护间隔相关值来指定保护间隔相关重心的位置，并计算载波方向偏移量Fshift。 均衡部将载波插值部的载波插值滤波器的通带按同步部所计算的载波方向移位量Fshift进行移位。 对于任何FFT窗口位置，该移位处理使延迟分布保持在载波内插滤波器的通带的中心。 即使载波内插滤波器的通带比OFDM信号的保护间隔窄，也能够限制FFT窗口位置的范围。

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。

公开(公告)号：US20080019430A1

公开(公告)日：2008-01-24

申请号：US11596076

申请日：2005-05-17

申请人： Kazuaki Suzuki ,  Mikihiro Ouchi

发明人： Kazuaki Suzuki ,  Mikihiro Ouchi

IPC分类号： G01S13/00

CPC分类号： H04L7/042 ,  H04L7/06

摘要： A signal detection device rapidly and accurately detects a desired signal from a reception signal. A correlation unit 231 outputs a correlation value string obtained by cross-correlating an input symbol string and a reference symbol string, a first position detection unit 232 detects a position of a correlation value viewed as a maximum or a local maximum on the correlation value string, a compensation unit 233 performs compensation by suppressing correlation error values from correlation value at positions other than the detected position, a second position detection unit 234 detects a position of a correlation value viewed as the maximum on the compensated correlation value string, and a sync-detected signal generation unit 235 outputs a sync-detected signal based on the position detected by the second position detection unit 234.

摘要翻译： 信号检测装置从接收信号快速且准确地检测期望的信号。 相关单元231输出通过将输入符号串和参考符号串相互相关而获得的相关值值串，第一位置检测单元232检测在相关值串上观察为最大值或局部最大值的相关值的位置 补偿单元233通过从检测位置以外的位置的相关值中抑制相关误差值来进行补偿，第二位置检测单元234检测在补偿后的相关值值串上被视为最大值的相关值的位置，以及同步 检测信号生成单元235基于由第二位置检测单元234检测到的位置输出同步检测信号。

公开(公告)号：US20120288029A1

公开(公告)日：2012-11-15

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： H04L25/49 ,  H04L27/06 ,  H03M13/05

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。

公开(公告)号：US07924952B2

公开(公告)日：2011-04-12

申请号：US11596076

申请日：2005-05-17

申请人： Kazuaki Suzuki ,  Mikihiro Ouchi

发明人： Kazuaki Suzuki ,  Mikihiro Ouchi

IPC分类号： H04L27/06

CPC分类号： H04L7/042 ,  H04L7/06

摘要： A signal detection device rapidly and accurately detects a desired signal from a reception signal. A correlation unit 231 outputs a correlation value string obtained by cross-correlating an input symbol string and a reference symbol string, a first position detection unit 232 detects a position of a correlation value viewed as a maximum or a local maximum on the correlation value string, a compensation unit 233 performs compensation by suppressing correlation error values from correlation value at positions other than the detected position, a second position detection unit 234 detects a position of a correlation value viewed as the maximum on the compensated correlation value string, and a sync-detected signal generation unit 235 outputs a sync-detected signal based on the position detected by the second position detection unit 234.

摘要翻译： 信号检测装置从接收信号快速且准确地检测期望的信号。 相关单元231输出通过将输入符号串和参考符号串相互相关而获得的相关值值串，第一位置检测单元232检测在相关值串上观察为最大值或局部最大值的相关值的位置 补偿单元233通过从检测位置以外的位置的相关值中抑制相关误差值进行补偿，第二位置检测单元234检测在补偿后的相关值值串上被视为最大值的相关值的位置，以及同步 检测信号生成单元235基于由第二位置检测单元234检测到的位置输出同步检测信号。

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）。