公开(公告)号：US08116398B2

公开(公告)日：2012-02-14

申请号：US11838255

申请日：2007-08-14

申请人： Ren Sakata ,  Koji Akita

发明人： Ren Sakata ,  Koji Akita

IPC分类号： H04B7/02

CPC分类号： H04B7/06 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0671 ,  H04B7/0684 ,  H04L27/2602 ,  H04L27/2626

摘要： A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.

摘要翻译： 发射机包括通过调制导频序列产生导频源信号的第一发生器，第二发生器通过调制数据序列产生时间长于导频源信号的数据源信号，第一循环移位器执行第一移位量到导频的循环移位 源信号以产生第一导频信号，第二循环移位器执行第二移位量到数据源信号的循环移位以产生第一数据信号，第三循环移位器执行第三移位量到导频源信号的循环移位以产生第二导频信号， 第四循环移位器，执行第四移位量到数据源信号的循环移位，生成第二数据信号，第一发送天线发送第一导频信号和第一数据信号;第二发送天线，发送第二导频信号和第二数据信号。

公开(公告)号：US20060056380A1

公开(公告)日：2006-03-16

申请号：US11086390

申请日：2005-03-23

申请人： Jun Mitsugi ,  Koji Akita ,  Ren Sakata ,  Tomoya Tandai ,  Naohisa Shibuya

发明人： Jun Mitsugi ,  Koji Akita ,  Ren Sakata ,  Tomoya Tandai ,  Naohisa Shibuya

IPC分类号： H04J3/24

CPC分类号： H04L1/0003 ,  H04L1/0006 ,  H04L1/0015 ,  H04L1/0017 ,  H04L1/1867 ,  H04L25/0228 ,  H04L27/2601 ,  H04L27/2647

摘要： There are provided a radio communication device and method including: modulating packets with a modulation scheme assigned in advance; transmitting modulated packets; receiving packets; estimating a channel state by utilizing received packets; selecting a first modulation scheme having a larger number of bits to be allocated per one symbol than the number of bits to be allocated in the modulation scheme assigned in advance, in case where the channel state satisfies a first modulation scheme change threshold, selecting a second modulation scheme having a smaller number of bits to be allocated per one symbol than the number of bits to be allocated in the modulation scheme assigned in advance, in case where the channel state satisfies a second modulation scheme change threshold; and modulating packets that satisfy an predetermined application condition, with the first or the second modulation scheme.

摘要翻译： 提供了一种无线电通信装置和方法，包括：以预先分配的调制方案调制分组; 发送调制分组; 接收包; 通过利用接收到的分组来估计信道状态; 在信道状态满足第一调制方式改变阈值的情况下，选择每个符号要分配的比特数大于要分配的调制方式中要分配的比特数的第一调制方案，选择第二调制方式 调制方式，在信道状态满足第二调制方式变更阈值的情况下，每1个符号分配的比特数少于预先分配的调制方式中要分配的比特数; 以及利用第一或第二调制方案来调制满足预定应用条件的分组。

公开(公告)号：US20090147875A1

公开(公告)日：2009-06-11

申请号：US12368682

申请日：2009-02-10

申请人： Koji Akita ,  Kaoru Inoue ,  Ren Sakata

发明人： Koji Akita ,  Kaoru Inoue ,  Ren Sakata

IPC分类号： H04L27/28 ,  H04L27/00 ,  H04B3/46

CPC分类号： H04L27/2614 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0058

摘要： A radio transmitter includes a unit which generates a first instruction to instruct the transmission of a first transmission signal, a unit which generates the first transmission signal based on the first instruction, a unit which generates a second instruction to instruct the transmission of a second transmission signal to be selectively multiplied by an orthogonal code, a unit which generates the second transmission signal based on the second instruction, unit which transmits the first and the second transmission signals, a unit which predicts a collision of the first and second transmission signals, and a unit which stops the first transmission signal while the collision is predicted in a case where the second transmission signal is multiplied by the orthogonal code and which stops the second transmission signal while the collision is predicted in a case where the second transmission signal is not multiplied by the orthogonal code.

摘要翻译： 一种无线电发射机包括一个单元，该单元产生一个指令发送第一个发射信号的第一个指令，一个基于第一个指令产生第一个发射信号的单元，该单元产生指令第二个传输的第二个指令 信号被选择性地乘以正交码，基于第二指令产生第二发送信号的单元，发送第一和第二发送信号的单元，预测第一和第二发送信号的冲突的单元，以及 在第二发送信号被乘以正交码的情况下预测碰撞时停止第一发送信号的单元，并且在第二发送信号未被乘以的情况下预测碰撞时停止第二发送信号的单元 通过正交码。

公开(公告)号：US20080037680A1

公开(公告)日：2008-02-14

申请号：US11838255

申请日：2007-08-14

申请人： Ren SAKATA ,  Koji Akita

发明人： Ren SAKATA ,  Koji Akita

IPC分类号： H04B7/02

CPC分类号： H04B7/06 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0671 ,  H04B7/0684 ,  H04L27/2602 ,  H04L27/2626

摘要： A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.

摘要翻译： 发射机包括通过调制导频序列产生导频源信号的第一发生器，第二发生器通过调制数据序列产生时间长度比导频源信号长的数据源信号，第一循环移位器执行第一移位量到导频的循环移位 源信号以产生第一导频信号，第二循环移位器执行第二移位量到数据源信号的循环移位以产生第一数据信号，第三循环移位器执行第三移位量到导频源信号的循环移位以产生第二导频信号， 第四循环移位器，执行第四移位量到数据源信号的循环移位，生成第二数据信号，第一发送天线发送第一导频信号和第一数据信号;第二发送天线，发送第二导频信号和第二数据信号。

公开(公告)号：US08374278B2

公开(公告)日：2013-02-12

申请号：US13336289

申请日：2011-12-23

申请人： Ren Sakata ,  Koji Akita

发明人： Ren Sakata ,  Koji Akita

IPC分类号： H04B7/02

CPC分类号： H04B7/06 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0671 ,  H04B7/0684 ,  H04L27/2602 ,  H04L27/2626

摘要： A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.

公开(公告)号：US08761678B2

公开(公告)日：2014-06-24

申请号：US12050560

申请日：2008-03-18

申请人： Koji Akita ,  Noritaka Deguchi ,  Ren Sakata ,  Koichiro Ban

发明人： Koji Akita ,  Noritaka Deguchi ,  Ren Sakata ,  Koichiro Ban

IPC分类号： H04B1/00

CPC分类号： H04B7/0634

摘要： A radio transmitting apparatus includes a storage unit configured to store a plurality of weight sequence sets, which are each assigned to a plurality of transmission blocks sectioned by time axes and frequency axes, by associating the plurality of weight sequence sets with the plurality of transmission blocks, a first selecting unit configured to select one transmission block from the plurality of transmission blocks, a second selecting unit configured to select one weight sequence from one weight sequence set assigned to the one transmission block signal, a converting unit configured to convert a data signal by using the one weight sequence to generate a converted signal, and a transmitting unit configured to transmit the converted signal by using the one transmission block.

摘要翻译： 无线发送装置包括存储单元，其被配置为通过将多个加权序列集合与多个发送块相关联来存储分配给由时间轴和频率轴分割的多个发送块的多个加权序列集合 第一选择单元，被配置为从所述多个发送块中选择一个发送块;第二选择单元，被配置为从分配给所述一个发送块信号的一个权重序列集中选择一个权重序列;转换单元，被配置为将数据信号 通过使用一个加权序列来生成转换的信号，以及发送单元，被配置为通过使用一个发送块来发送转换的信号。

公开(公告)号：US08385851B2

公开(公告)日：2013-02-26

申请号：US11854070

申请日：2007-09-12

申请人： Ren Sakata ,  Koji Akita ,  Koichiro Ban ,  Noritaka Deguchi

发明人： Ren Sakata ,  Koji Akita ,  Koichiro Ban ,  Noritaka Deguchi

IPC分类号： H03C7/02

CPC分类号： H04B7/12 ,  H04L1/04 ,  H04L1/06 ,  Y02D70/442

摘要： A radio communication method includes generating a first transmit RF signal and a second transmit RF signal from a data signal to be transmitted. Each of the first and second transmit RF signals have a power spectrum in symmetric shape in the frequency domain. The first transmit RF signal and the second transmit RF signal are transmitted at a different time. The first transmit RF signal and the second transmit RF signal are received to generate a first received RF signal and a second received RF signal. The data signal from the first received RF signal and the second received RF signal are reproduced.

摘要翻译： 无线电通信方法包括从要发送的数据信号产生第一发射RF信号和第二发射RF信号。 第一和第二发射RF信号中的每一个在频域具有对称形状的功率谱。 第一发射RF信号和第二发射RF信号在不同的时间发射。 接收第一发射RF信号和第二发射RF信号以产生第一接收RF信号和第二接收RF信号。 来自第一接收RF信号和第二接收RF信号的数据信号被再现。

公开(公告)号：US20120099668A1

公开(公告)日：2012-04-26

申请号：US13336289

申请日：2011-12-23

申请人： Ren SAKATA ,  Koji Akita

发明人： Ren SAKATA ,  Koji Akita

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04B7/06 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0671 ,  H04B7/0684 ,  H04L27/2602 ,  H04L27/2626

摘要： A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.

摘要翻译： 发射机包括通过调制导频序列产生导频源信号的第一发生器，第二发生器通过调制数据序列产生时间长于导频源信号的数据源信号，第一循环移位器执行第一移位量到导频的循环移位 源信号以产生第一导频信号，第二循环移位器执行第二移位量到数据源信号的循环移位以产生第一数据信号，第三循环移位器执行第三移位量到导频源信号的循环移位以产生第二导频信号， 第四循环移位器，执行第四移位量到数据源信号的循环移位，生成第二数据信号，第一发送天线发送第一导频信号和第一数据信号;第二发送天线，发送第二导频信号和第二数据信号。

公开(公告)号：US20080227389A1

公开(公告)日：2008-09-18

申请号：US11854070

申请日：2007-09-12

申请人： Ren Sakata ,  Koji Akita ,  Koichiro Ban ,  Noritaka Deguchi

发明人： Ren Sakata ,  Koji Akita ,  Koichiro Ban ,  Noritaka Deguchi

IPC分类号： H04B1/02 ,  H04B1/00 ,  H04B7/24

CPC分类号： H04B7/12 ,  H04L1/04 ,  H04L1/06 ,  Y02D70/442

摘要： A radio communication method including, generating a first transmit RF signal and a second transmit RF signal from a data signal to be transmitted, each of the first and second transmit RF signals having a power spectrum in symmetric shape in the frequency domain, transmitting the first transmit RF signal and the second transmit RF signal at a different time, receiving the first transmit RF signal and the second transmit RF signal to generate a first received RF signal and a second received RF signal, and reproducing the data signal from the first received RF signal and the second received RF signal.

摘要翻译： 一种无线电通信方法，包括：从要发送的数据信号产生第一发射RF信号和第二发射RF信号，所述第一和第二发射RF信号中的每一个在频域中具有对称形状的功率谱， 在不同的时间发射RF信号和第二发射RF信号，接收第一发射RF信号和第二发射RF信号以产生第一接收RF信号和第二接收RF信号，并且从第一接收RF再现数据信号 信号和第二个接收的RF信号。

公开(公告)号：US07283598B2

公开(公告)日：2007-10-16

申请号：US10813014

申请日：2004-03-31

申请人： Koji Akita ,  Kazumi Sato ,  Ren Sakata

发明人： Koji Akita ,  Kazumi Sato ,  Ren Sakata

IPC分类号： H04L27/00 ,  H04L7/00 ,  H04L27/06 ,  H03H7/30 ,  H04J11/00

CPC分类号： H04L25/03159 ,  H04L27/2657 ,  H04L2025/03414

摘要： An OFDM receiver apparatus comprises a receiver to receive an OFDM signal, an estimator to estimate a distortion, a distortion compensator subjecting the sub-carrier to distortion compensation according to a control signal to generate a distortion-compensated sub-carrier, a demodulator to demodulate the distortion-compensated sub-carrier, an estimator to generate first phase distortion information, using the distortion-compensated sub-carrier and the distortion information, a weighting synthesizer to weight the first phase distortion information by weighting factors with time function over symbol intervals and then synthesize the first phase distortion information, to generate second phase distortion information, and a control signal generator to generate the control signal using the distortion information and the second phase distortion information.

摘要翻译： OFDM接收机装置包括接收OFDM信号的接收机，用于估计失真的估计器，根据控制信号对子载波进行失真补偿的失真补偿器，以产生失真补偿子载波，解调器解调 失真补偿子载波，使用失真补偿子载波和失真信息产生第一相位失真信息的估计器，加权合成器，用于通过符号间隔上的时间函数加权因子来加权第一相位失真信息;以及 然后合成第一相位失真信息，产生第二相位失真信息，以及控制信号发生器，使用失真信息和第二相位失真信息产生控制信号。