公开(公告)号：US08537932B2

公开(公告)日：2013-09-17

申请号：US12262395

申请日：2008-10-31

申请人： Tsuyoshi Hasegawa ,  Masahiko Shimizu ,  Akira Ito

发明人： Tsuyoshi Hasegawa ,  Masahiko Shimizu ,  Akira Ito

IPC分类号： H03K9/00 ,  H04L27/01

CPC分类号： H04L25/03012 ,  H04L25/0242 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03605

摘要： In an equalizer arranged in a wireless communication device: information on correlation in one or more first wireless signals is generated; a channel vector is generated on the basis of the one or more first wireless signals; an extended correlation matrix which contains a correlation matrix indicating the information on correlation and is extended so as to become a circulant matrix is generated; an extended channel vector is generated by extending the channel vector so that the extended channel vector contains elements of the channel vector and has rows the number of which is identical to the number of rows of the extended correlation matrix; and weight coefficients are calculated as a solution, in the frequency domain, of an equation expressed by the extended correlation matrix and the extended channel vector, where the solution is obtained by solving the equation.

摘要翻译： 在布置在无线通信设备中的均衡器中，生成关于一个或多个第一无线信号中的相关性的信息; 基于一个或多个第一无线信号生成信道向量; 生成包含相关矩阵的扩展相关矩阵，该相关矩阵指示关于相关性的信息并被扩展以成为循环矩阵; 通过扩展信道向量来生成扩展信道向量，使得扩展信道向量包含信道向量的元素，其行数与扩展相关矩阵的行数相同; 并且计算权重系数作为频域中由扩展相关矩阵和扩展信道向量表示的等式的解，其中通过求解方程获得解。

公开(公告)号：US20090213969A1

公开(公告)日：2009-08-27

申请号：US12262395

申请日：2008-10-31

申请人： Tsuyoshi Hasegawa ,  Masahiko Shimizu ,  Akira Ito

发明人： Tsuyoshi Hasegawa ,  Masahiko Shimizu ,  Akira Ito

IPC分类号： H04L27/06

CPC分类号： H04L25/03012 ,  H04L25/0242 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03605

摘要： In an equalizer arranged in a wireless communication device: information on correlation in one or more first wireless signals is generated; a channel vector is generated on the basis of the one or more first wireless signals; an extended correlation matrix which contains a correlation matrix indicating the information on correlation and is extended so as to become a circulant matrix is generated; an extended channel vector is generated by extending the channel vector so that the extended channel vector contains elements of the channel vector and has rows the number of which is identical to the number of rows of the extended correlation matrix; and weight coefficients are calculated as a solution, in the frequency domain, of an equation expressed by the extended correlation matrix and the extended channel vector, where the solution is obtained by solving the equation.

摘要翻译： 在布置在无线通信设备中的均衡器中，生成关于一个或多个第一无线信号中的相关性的信息; 基于一个或多个第一无线信号生成信道向量; 生成包含相关矩阵的扩展相关矩阵，该相关矩阵指示关于相关性的信息并被扩展以成为循环矩阵; 通过扩展信道向量来生成扩展信道向量，使得扩展信道向量包含信道向量的元素，其行数与扩展相关矩阵的行数相同; 并且计算权重系数作为频域中由扩展相关矩阵和扩展信道向量表示的等式的解，其中通过求解方程获得解。

公开(公告)号：US08265131B2

公开(公告)日：2012-09-11

申请号：US12574954

申请日：2009-10-07

申请人： Akira Ito ,  Tsuyoshi Hasegawa

发明人： Akira Ito ,  Tsuyoshi Hasegawa

IPC分类号： H03H7/30

CPC分类号： H04L25/03038 ,  H04B1/712 ,  H04L25/0202 ,  H04L25/0218 ,  H04L25/03292

摘要： A channel estimation value of each path timing is determined, a path timing, the channel estimation value of which is to be set to zero, is determined based on a reception power of each path timing and a predetermined power threshold (P0), and a channel estimation value of the detected path timing to zero.

摘要翻译： 确定每个路径定时的信道估计值，根据每个路径定时和预定功率阈值（P0）的接收功率来确定将其信道估计值设置为零的路径定时，以及 检测路径定时的信道估计值为零。

公开(公告)号：US07746938B2

公开(公告)日：2010-06-29

申请号：US10862496

申请日：2004-06-07

申请人： Tsuyoshi Hasegawa ,  Akira Ito

发明人： Tsuyoshi Hasegawa ,  Akira Ito

IPC分类号： H04L27/28

CPC分类号： H04L25/0204 ,  H04L5/026 ,  H04L27/261

摘要： In an OFDM transmitting apparatus, where m (where m is an integer of one or greater) adjacent subcarriers are adopted as a set, an orthogonal code generator generates orthogonal codes of each set in such a manner that the orthogonal codes will be orthogonal in the time direction in regard to m subcarriers of each set and orthogonal in the subcarrier direction in regard to m pilot symbols. An orthogonal code multiplier uses orthogonal codes of each set to multiply subcarrier components of the corresponding set, and an IFFT unit applies IFFT processing to the results of multiplication in each subcarrier.

摘要翻译： 在采用m（m为1以上的整数）相邻副载波的OFDM发送装置中，正交码发生器以这样的方式生成各组的正交码，使得正交码将在 关于每组的m个子载波的时间方向，并且关于m个导频符号在副载波方向上正交。 正交码乘法器使用每组的正交码乘以相应组的子载波分量，并且IFFT单元对每个子载波中的乘法结果应用IFFT处理。

公开(公告)号：US08189695B2

公开(公告)日：2012-05-29

申请号：US11822354

申请日：2007-07-05

申请人： Akira Ito ,  Masahiko Shimizu

发明人： Akira Ito ,  Masahiko Shimizu

IPC分类号： H04K1/10

CPC分类号： H04L5/0019 ,  H04L1/0003 ,  H04L5/006 ,  H04L25/0216 ,  H04L25/0228 ,  H04L27/2646 ,  H04L27/2647

摘要： A OFDM-CDMA communication system that generates a plurality of subcarrier components by multiplying each of a plurality of transmission symbols by a channelization code whose length is N according to a spreading factor, and transmits those subcarrier components by a plurality of different subcarriers, measures the propagation environment of each subcarrier, divides the subcarriers into groups having N number of subcarriers in each group whose propagation environments are close one another, and transmits the N number of subcarrier components, which have been multiplied by the channelization code, by subcarriers of the same group.

摘要翻译： 一种OFDM-CDMA通信系统，其通过将多个发送符号中的每一个乘以根据扩展因子的长度为N的信道化码来生成多个子载波分量，并且通过多个不同的子载波来发送这些子载波分量， 每个子载波的传播环境在每个传播环境彼此接近的组中将子载波划分成具有N个子载波的组，并且将与信道化码相乘的N个子载波分量相乘， 组。

公开(公告)号：US08116241B2

公开(公告)日：2012-02-14

申请号：US11128285

申请日：2005-05-13

申请人： Masahiko Shimizu ,  Akira Ito

发明人： Masahiko Shimizu ,  Akira Ito

IPC分类号： H04B7/00 ,  H04B7/005 ,  H04B7/185 ,  H04L12/66 ,  H04W72/00

CPC分类号： H04B7/0452 ,  H04B7/0626 ,  H04B7/0628

摘要： The present invention relates to a wireless communication system to properly switch over a transmission method of radio signals corresponding to a configuration of a receiver. The wireless communication system according to the present invention includes a transmitting device having a plurality of antennas and capable of transmitting radio signals different from each other from these antennas, and a receiving device having at least one antenna and receiving the radio signals transmitted from the transmitting device. The receiving device comprises an information transmitting unit transmitting, to the transmitting device, configuration information about a configuration of the receiving device, and the transmitting device includes a transmitting unit transmitting the radio signals by a transmission method corresponding to the configuration information received from the receiving device.

摘要翻译： 无线通信系统技术领域本发明涉及一种适当切换对应于接收机的配置的无线信号的发送方法的无线通信系统。 根据本发明的无线通信系统包括具有多个天线并且能够从这些天线发送彼此不同的无线电信号的发送设备，以及具有至少一个天线的接收设备，并且接收从发送端发送的无线电信号 设备。 接收装置包括信息发送单元，向发送装置发送关于接收装置的结构的配置信息，发送装置包括发送单元，发送单元通过与从接收到的接收到的配置信息对应的发送方法发送无线信号 设备。

公开(公告)号：US20090325514A1

公开(公告)日：2009-12-31

申请号：US12556092

申请日：2009-09-09

申请人： Masahiko Shimizu ,  Akira Ito

发明人： Masahiko Shimizu ,  Akira Ito

IPC分类号： H04B7/02

CPC分类号： H04B7/0452 ,  H04B7/0626 ,  H04B7/0628

摘要： The present invention relates to a wireless communication system to properly switch over a transmission method of radio signals corresponding to a configuration of a receiver. The wireless communication system according to the present invention includes a transmitting device having a plurality of antennas and capable of transmitting radio signals different from each other from these antennas, and a receiving device having at least one antenna and receiving the radio signals transmitted from the transmitting device. The receiving device comprises an information transmitting unit transmitting, to the transmitting device, configuration information about a configuration of the receiving device, and the transmitting device includes a transmitting unit transmitting the radio signals by a transmission method corresponding to the configuration information received from the receiving device.

摘要翻译： 无线通信系统技术领域本发明涉及一种适当切换对应于接收机的配置的无线信号的发送方法的无线通信系统。 根据本发明的无线通信系统包括具有多个天线并且能够从这些天线发送彼此不同的无线电信号的发送设备，以及具有至少一个天线的接收设备，并且接收从发送端发送的无线电信号 设备。 接收装置包括信息发送单元，向发送装置发送关于接收装置的结构的配置信息，发送装置包括发送单元，发送单元通过与从接收到的接收到的配置信息对应的发送方法发送无线信号 设备。

公开(公告)号：US08265123B2

公开(公告)日：2012-09-11

申请号：US12239974

申请日：2008-09-29

申请人： Akira Ito ,  Masahiko Shimizu

发明人： Akira Ito ,  Masahiko Shimizu

IPC分类号： H04B1/00

CPC分类号： H04B1/7117 ,  H04B2201/7071

摘要： A CDMA receiving apparatus includes a path searcher which outputs path timing that corresponds to sample timing where a correlation value between a received data sequence and a reference code sequence reaches a peak, and outputs the correlation value calculated at a sample timing adjacent to the path timing as an adjacent timing correlation value; an interpolation adjuster; and a despreader which despreads an output of the interpolation adjuster at the path timing, wherein the interpolation adjuster includes an interpolator for generating an interpolating data sequence which is a data sequence displaced in time by a specified fraction of one sample period with respect to the received data sequence, and outputs the received data sequence or the interpolating data sequence by switching therebetween based on a result of a comparison between the correlation value calculated at the path timing and the adjacent timing correlation value.

摘要翻译： CDMA接收装置包括路径搜索器，路径搜索器输出对应于接收数据序列和参考码序列之间的相关值达到峰值的采样定时的路径定时，并输出在与路径定时相邻的采样定时计算的相关值 作为相邻定时相关值; 插值调整器; 以及解扩器，其在所述路径定时处对所述插值调整器的输出进行解扩，其中，所述内插调整器包括内插器，用于产生内插数据序列，所述内插数据序列是时间上相对于接收到的一个采样周期的指定分数 数据序列，并且基于在路径定时计算的相关值与相邻定时相关值之间的比较的结果，通过切换接收数据序列或内插数据序列来输出。

公开(公告)号：US20080130784A1

公开(公告)日：2008-06-05

申请号：US11987335

申请日：2007-11-29

申请人： Masahiko Shimizu ,  Akira Ito

发明人： Masahiko Shimizu ,  Akira Ito

IPC分类号： H04L27/00 ,  H04L27/06 ,  H04L17/02

CPC分类号： H03M13/2957 ,  H03M13/258 ,  H03M13/3905 ,  H03M13/3927 ,  H03M13/3988 ,  H03M13/41 ,  H03M13/6325 ,  H03M13/6505

摘要： A coding device including a coding unit generating a systematic bit, a first redundant bit corresponding to the systematic bit, and a second redundant bit corresponding to the systematic bit, has a generating unit generating, from the two pieces of systematic bits, the two pieces of first parity bits corresponding to the systematic bits and the two pieces of second redundant bits corresponding to the systematic bits, a tuple of one systematic bit and the first redundant bit corresponding to one systematic bit, a tuple of the other systematic bit and the first redundant bit corresponding to the other redundant bit, and a tuple of the second redundant bit corresponding to one systematic bit and the second redundant bit corresponding to the other systematic bit.

摘要翻译： 一种编码装置，包括产生系统比特的编码单元，对应于系统比特的第一冗余比特和对应于系统比特的第二冗余比特，具有从两个系统比特生成两个系数比特的生成单元 对应于系统比特的第一奇偶校验位和对应于系统比特的两条第二冗余比特，一个系统比特的元组和对应于一个系统比特的第一冗余比特，另一个系统比特的元组和第一 对应于另一冗余位的冗余位，以及对应于一个系统位的第二冗余位的元组和与另一个系统位相对应的第二冗余位。

公开(公告)号：US08532208B2

公开(公告)日：2013-09-10

申请号：US12716409

申请日：2010-03-03

申请人： Masahiko Shimizu ,  Akira Ito

发明人： Masahiko Shimizu ,  Akira Ito

IPC分类号： H04L25/49 ,  H04L25/03

CPC分类号： H04B7/0413 ,  H04L1/0067 ,  H04L1/1812 ,  H04L1/1893

摘要： A transmission apparatus obtains, for each transmission to a reception apparatus, information on a per-bit transmission of a transmission bit string, and controls a per-bit transmission condition for a current transmission bit string such that a per-bit transmission quality of the transmission bit string approaches evenly based on cumulative information on the transmissions up to the last transmission.

摘要翻译： 发送装置对于对接收装置的每次发送，获得关于发送比特串的每比特传输的信息，并且控制当前传输比特串的每比特传输条件，使得每个比特的传输质量 传输比特串基于到最后传输的传输的累积信息均匀地接近。