公开(公告)号：US20100158146A1

公开(公告)日：2010-06-24

申请号：US12594505

申请日：2008-04-03

申请人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007

摘要： Modulation information is efficiently notified to a communicating destination. Provided are a first modulation information determining section 1 that determines first modulation information for each subcarrier or each subcarrier group with grouped subcarriers based on the propagation path information and bitmap information determined from modulation information, a data transform section 2 that transforms the first modulation information into a different data space, a second modulation information determining section 3 that compresses the transformed data to determine second modulation information to be notified to a communicating destination, an inverse data transform section 4 that inversely transforms the second modulation information into an original data space, and a third modulation information determining section 5 that determines third modulation information for each subcarrier or each subcarrier group with grouped subcarriers based on the inversely-transformed data and the bitmap information.

摘要翻译： 调制信息被有效地通知给通信目的地。 提供了一种第一调制信息确定部分1，其基于从调制信息确定的传播路径信息和位图信息，确定具有分组子载波的每个子载波或每个子载波组的第一调制信息;数据变换部分2，其将第一调制信息转换为 不同数据空间的第二调制信息确定部分3，压缩变换数据以确定要通知给通信目的地的第二调制信息;将第二调制信息逆变换为原始数据空间的逆数据变换部分4，以及 第三调制信息确定部分5，其基于逆变换数据和位图信息确定具有分组子载波的每个子载波或每个子载波组的第三调制信息。

公开(公告)号：US08520748B2

公开(公告)日：2013-08-27

申请号：US12088816

申请日：2006-10-03

申请人： Yasuhiro Hamaguchi ,  Kimihiko Imamura ,  Shimpei To ,  Hideo Namba

发明人： Yasuhiro Hamaguchi ,  Kimihiko Imamura ,  Shimpei To ,  Hideo Namba

IPC分类号： H04K1/10

CPC分类号： H04L27/2626 ,  H04J2013/0037 ,  H04L5/0026 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2602

摘要： In a cellular system using an OFDM scheme, a transmitter multiplies subcarriers for channel estimation by codes and transmits them, the codes being such that a phase difference φ of the code multiplied with consecutive subcarriers for channel estimation is constant, and a code of every M consecutive subcarriers (M being 2 or an integer greater than 2) is mutually orthogonal with a code multiplied with same subcarriers of another transmitter.

摘要翻译： 在使用OFDM方案的蜂窝系统中，发射机将用于信道估计的副载波乘以码并发送它们，这些码使得与用于信道估计的连续子载波相乘的码的相位差phi是恒定的，并且每个M的码 连续的子载波（M为2或大于2的整数）与与另一发射机的相同子载波相乘的码相互正交。

公开(公告)号：US08000224B2

公开(公告)日：2011-08-16

申请号：US12302794

申请日：2007-06-07

申请人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H04J11/00

CPC分类号： H04L25/0232 ,  H04L25/022 ,  H04L27/265 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A receiver 100 has a Fourier transform section 105 Fourier-transforming symbols for propagation path estimation including subcarriers modulated by known signals different for two or more antennas to calculate first frequency information, a multiplying section 107 multiplying the first frequency information by complex conjugate signals of two or more known codes to calculate second frequency information of each of the subcarriers, an interpolation information generating section 121 selecting partial information from the second frequency information on the basis of the known codes and generating interpolation frequency information interpolating the subcarriers using the selected information, a subcarrier interpolating section 122 interpolating the interpolation frequency information to the second frequency information to calculate third frequency information, and an inverse Fourier transform section 109 inverse-Fourier-transforming the third frequency information.

摘要翻译： 接收机100具有付里叶变换部105，傅里叶变换用于传播路径估计的符号，包括由两个或多个天线不同的已知信号调制的子载波，以计算第一频率信息;乘法部分107将第一频率信息乘以二 或更多的已知代码来计算每个子载波的第二频率信息，插值信息生成部分121根据已知代码从第二频率信息中选择部分信息，并使用所选择的信息产生插值子载波的插值频率信息; 子载波内插部分122将内插频率信息内插到第二频率信息以计算第三频率信息，以及逆傅立叶变换部分109对第三频率信息进行傅立叶逆变换。

公开(公告)号：US20100318876A1

公开(公告)日：2010-12-16

申请号：US12867209

申请日：2009-02-13

申请人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/2975 ,  H03M13/45 ,  H03M13/6337 ,  H03M13/6502 ,  H04L1/0051 ,  H04L1/0053

摘要： A decoding device which decodes error correction coded information by iterating a decoding process. The decoding device includes an iteration quantity determination unit which calculates a mutual information indicating a relationship with transmission information of the coded information and determines the number of iterations of the decoding process based on the calculated mutual information.

摘要翻译： 解码装置，其通过迭代解码处理对纠错编码信息进行解码。 解码装置包括迭代量确定单元，其计算指示与编码信息的发送信息的关系的互信息，并且基于所计算的互信息确定解码处理的迭代次数。

公开(公告)号：US20090196166A1

公开(公告)日：2009-08-06

申请号：US12302794

申请日：2007-06-07

申请人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H04J11/00

CPC分类号： H04L25/0232 ,  H04L25/022 ,  H04L27/265 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A receiver 100 has a Fourier transform section 105 Fourier-transforming symbols for propagation path estimation including subcarriers modulated by known signals different for two or more antennas to calculate first frequency information, a multiplying section 107 multiplying the first frequency information by complex conjugate signals of two or more known codes to calculate second frequency information of each of the subcarriers, an interpolation information generating section 121 selecting partial information from the second frequency information on the basis of the known codes and generating interpolation frequency information interpolating the subcarriers using the selected information, a subcarrier interpolating section 122 interpolating the interpolation frequency information to the second frequency information to calculate third frequency information, and an inverse Fourier transform section 109 inverse-Fourier-transforming the third frequency information.

摘要翻译： 接收机100具有付里叶变换部105，傅里叶变换用于传播路径估计的符号，包括由两个或多个天线不同的已知信号调制的子载波，以计算第一频率信息;乘法部分107将第一频率信息乘以二 或更多的已知代码来计算每个子载波的第二频率信息，插值信息生成部分121根据已知代码从第二频率信息中选择部分信息，并使用所选择的信息产生插值子载波的插值频率信息; 子载波内插部分122将内插频率信息内插到第二频率信息以计算第三频率信息，以及逆傅立叶变换部分109对第三频率信息进行傅立叶逆变换。

公开(公告)号：US08780825B2

公开(公告)日：2014-07-15

申请号：US12921082

申请日：2009-03-05

申请人： Shimpei To ,  Minoru Kubota ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Kazunari Yokomakura

发明人： Shimpei To ,  Minoru Kubota ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Kazunari Yokomakura

IPC分类号： H04W4/00

CPC分类号： H04L27/156 ,  H04J11/004 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/03159 ,  H04L2025/03426

摘要： A communication system that transmits a signal from a first communication device to a second communication device using a plurality of frequency channels, wherein at least one of the plurality of frequency channels uses part of subcarriers in an overlapping manner with one or more adjacent frequency channels, the first communication device includes a transmission unit which transmits a signal to the second communication device using one or more of the plurality of frequency channels, and the second communication device includes a reception unit which receives the signal transmitted by the transmission unit.

摘要翻译： 一种使用多个频道从第一通信设备向第二通信设备发送信号的通信系统，其中所述多个频率信道中的至少一个频率信道以与一个或多个相邻频率信道重叠的方式使用部分子载波， 第一通信设备包括使用多个频道中的一个或多个向第二通信设备发送信号的发送单元，并且第二通信设备包括接收由发送单元发送的信号的接收单元。

公开(公告)号：US08654751B2

公开(公告)日：2014-02-18

申请号：US13457298

申请日：2012-04-26

申请人： Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei Toh ,  Kazunari Yokomakura

发明人： Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei Toh ,  Kazunari Yokomakura

IPC分类号： H04J1/00 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04B7/15 ,  H04B1/692 ,  H04B1/707 ,  H04B2201/70706 ,  H04J13/0044 ,  H04J13/20 ,  H04L5/0021 ,  H04L5/026 ,  H04L27/2615 ,  H04L27/2636 ,  H04L27/2647 ,  H04W72/0446

摘要： A transmission apparatus according to the present invention includes: an encoding section; a modulation section; a variable-SF spreading section that performs spreading with variable SF according to control information A from a control section; an IDFT section that performs IDFT on output from the spreading section; a GI inserting section; a parallel/serial conversion section that converts output from the GI inserting section into a serial data sequence; a digital/analog conversion section; and an RF section that transmits a signal from an antenna after converting the signal to a frequency band for analog signal transmission and controlling it to an appropriate transmission power. The control section is configured to generate control information A for determining the variable SF and input the information A to the variable-SF spreading section and the RF section. In control information A, SF is varied depending on transmission power required.

摘要翻译： 根据本发明的发送装置包括：编码部分; 调制部; 可变SF扩展部，其根据来自控制部的控制信息A，利用变量SF进行扩展; IDFT部分，用于在扩展部分的输出上执行IDFT; GI插入部分; 并行/串行转换部分，其将来自GI插入部分的输出转换为串行数据序列; 数字/模拟转换部分; 以及RF部，其在将信号转换成用于模拟信号传输的频带之后从天线发送信号，并将其控制到适当的发送功率。 控制部分被配置为产生用于确定变量SF并且将信息A输入到可变SF扩展部分和RF部分的控制信息A. 在控制信息A中，SF取决于所需的发射功率而变化。

公开(公告)号：US08625504B2

公开(公告)日：2014-01-07

申请号：US12521103

申请日：2007-12-27

申请人： Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei To ,  Seiichi Sampei ,  Shinichi Miyamoto

发明人： Yasuhiro Hamaguchi ,  Minoru Kubota ,  Hideo Namba ,  Shimpei To ,  Seiichi Sampei ,  Shinichi Miyamoto

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04L12/26 ,  H04J1/00 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04W72/04 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0069 ,  H04L27/2614 ,  H04L27/2636 ,  H04W28/065 ,  H04W52/42 ,  H04W52/52 ,  H04W72/0453

摘要： A radio communication system converts a time domain signal into a plurality of frequency signals to be allocated onto a plurality of subcarriers to be transmitted. The radio communication system changes a method of allocating the plurality of frequency signals onto the plurality of subcarriers based on transmission power information.

摘要翻译： 无线电通信系统将时域信号转换为多个频率信号以分配到要发送的多个子载波上。 无线电通信系统基于发送功率信息改变将多个频率信号分配到多个子载波上的方法。

公开(公告)号：US08385218B2

公开(公告)日：2013-02-26

申请号：US12445208

申请日：2007-10-10

申请人： Shimpei To ,  Yasuhiro Hamaguchi ,  Hideo Namba

发明人： Shimpei To ,  Yasuhiro Hamaguchi ,  Hideo Namba

IPC分类号： H04J1/16

CPC分类号： H04L1/0026 ,  H04L1/0029 ,  H04L1/003 ,  H04L5/0007

摘要： To efficiently compress the information amount for feedback when a communication apparatus sends back a result of performing discrete cosine transform on the reception quality information to a communication apparatus of a communicating destination. In a communication apparatus for transmitting feedback information generated based on a plurality of reception quality information to a communicating destination apparatus, the feedback information is a result of performing discrete cosine transform on the plurality of reception quality information, and performing respective different quantization on signal components of at least a group of samples among signal components of a plurality of samples obtained by the discrete cosine transform.

摘要翻译： 当通信装置将对接收质量信息执行离散余弦变换的结果返回到通信目的地的通信装置时，有效地压缩用于反馈的信息量。 在将通过多个接收质量信息生成的反馈信息发送到通信目的地装置的通信装置中，反馈信息是对多个接收质量信息进行离散余弦变换的结果，对信号成分进行各种不同的量化 通过离散余弦变换获得的多个样本的信号分量中的至少一组样本。

公开(公告)号：US20100266065A1

公开(公告)日：2010-10-21

申请号：US12809528

申请日：2008-12-19

申请人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

发明人： Kazunari Yokomakura ,  Yasuhiro Hamaguchi ,  Hideo Namba ,  Shimpei To

IPC分类号： H04B15/00 ,  H04L27/00

CPC分类号： H04L25/03159 ,  H04B17/309 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/0015 ,  H04L1/0036

摘要： A reception device which receives a signal transmitted by a transmission device which changes at least one of a modulation scheme and a coding rate. The reception device includes an equalization unit which equalizes a received signal in frequency domain, a reliability calculation unit which calculates the reliability of a transmitted bit from the received signal after equalization, a mutual information amount calculation unit which calculates a mutual information amount based on the reliability of the transmitted bit calculated by the reliability calculation unit, and a notification signal generation unit which sets at least one of a modulation scheme and a coding rate based on the mutual information amount calculated by the mutual information amount calculation unit to generate a signal to be reported to the transmission device.

摘要翻译： 一种接收由发送装置发送的信号的接收装置，该发送装置改变调制方式和编码率中的至少一个。 接收装置包括：均衡单元，其对频域中的接收信号进行均衡;可靠性计算单元，其从均衡后的接收信号中计算发送位的可靠性;互信息量计算单元，基于该信息量计算单元， 由可靠性计算单元计算的发送位的可靠性，以及通知信号生成单元，其基于由互信息量计算单元计算出的互信息量来设定调制方式和编码率中的至少一个，生成信号 报告给传输设备。