公开(公告)号：US08780967B2

公开(公告)日：2014-07-15

申请号：US13724813

申请日：2012-12-21

申请人： Koichiro Ban

发明人： Koichiro Ban

IPC分类号： H04L1/00

CPC分类号： H04L1/00 ,  H04L27/22 ,  H04L27/2647

摘要： According to one embodiment, a channel phase estimation apparatus includes a phase memory, subtractor, multiplier, and adder. The phase memory is configured to store a first phase estimation value up to a (k−1)-th (for k=1, 2, . . . , K) symbol. The subtractor is configured to calculate a difference value between a phase value of one carrier of a k-th symbol and the first phase estimation value. The multiplier is configured to multiply the difference value by a weight. The adder is configured to add a value output from the multiplier and the first phase estimation value to output a second phase estimation value up to the k-th symbol.

摘要翻译： 根据一个实施例，信道相位估计装置包括相位存储器，减法器，乘法器和加法器。 相位存储器被配置为存储直到第（k-1）（k = 1,2，...，K）个符号的第一相位估计值。 减法器被配置为计算第k个符号的一个载波的相位值和第一相位估计值之间的差值。 乘法器被配置为将差值乘以权重。 加法器被配置为将从乘法器输出的值和第一相位估计值相加以输出第二相位估计值直到第k个符号。

公开(公告)号：US08634865B2

公开(公告)日：2014-01-21

申请号：US13230943

申请日：2011-09-13

申请人： Ren Sakata ,  Koichiro Ban

发明人： Ren Sakata ,  Koichiro Ban

IPC分类号： H04B7/00 ,  H04W72/00

CPC分类号： H04L5/0053 ,  H04L5/0094 ,  H04W72/00 ,  H04W72/02 ,  H04W88/02

摘要： According to one embodiment, a transmitting apparatus includes a transmitting unit and a selecting unit. The transmitting unit transmits first control information using one of first communication resources. The first communication resources are included in a first transmission band and have respective independent numbers. The transmitting unit transmits second control information using one of second communication resources. The second communication resources are included in a second transmission band and have respective independent numbers. The selecting unit restricts the second communication resources to restricted second communication resources in accordance with a number assigned to one of the first communication resources used to transmit the first control information, and to select one second communication resource from the restricted second communication resources. The transmitting unit transmits the second control information using the selected second communication resource.

摘要翻译： 根据一个实施例，发送装置包括发送单元和选择单元。 发送单元使用第一通信资源之一发送第一控制信息。 第一通信资源被包括在第一传输频带中并具有各自的独立号码。 发送单元使用第二通信资源之一发送第二控制信息。 第二通信资源被包括在第二传输频带中并具有各自的独立号码。 选择单元根据分配给用于发送第一控制信息的第一通信资源之一的号码将第二通信资源限制为受限的第二通信资源，并从受限的第二通信资源中选择一个第二通信资源。 发送单元使用所选择的第二通信资源发送第二控制信息。

公开(公告)号：US20130243063A1

公开(公告)日：2013-09-19

申请号：US13724813

申请日：2012-12-21

申请人： Koichiro BAN

发明人： Koichiro BAN

IPC分类号： H04L1/00

CPC分类号： H04L1/00 ,  H04L27/22 ,  H04L27/2647

摘要： According to one embodiment, a channel phase estimation apparatus includes a phase memory, subtractor, multiplier, and adder. The phase memory is configured to store a first phase estimation value up to a (k−1)-th (for k=1, 2, . . . , K) symbol. The subtractor is configured to calculate a difference value between a phase value of one carrier of a k-th symbol and the first phase estimation value. The multiplier is configured to multiply the difference value by a weight. The adder is configured to add a value output from the multiplier and the first phase estimation value to output a second phase estimation value up to the k-th symbol.

摘要翻译： 根据一个实施例，信道相位估计装置包括相位存储器，减法器，乘法器和加法器。 相位存储器被配置为存储直到第（k-1）（k = 1,2，...，K）个符号的第一相位估计值。 减法器被配置为计算第k个符号的一个载波的相位值和第一相位估计值之间的差值。 乘法器被配置为将差值乘以权重。 加法器被配置为将从乘法器输出的值和第一相位估计值相加以输出第二相位估计值直到第k个符号。

公开(公告)号：US20120195296A1

公开(公告)日：2012-08-02

申请号：US13223587

申请日：2011-09-01

申请人： Tomoko ADACHI ,  Koichiro Ban ,  Tomoya Tandai ,  Hideo Kasami

发明人： Tomoko ADACHI ,  Koichiro Ban ,  Tomoya Tandai ,  Hideo Kasami

IPC分类号： H04W84/12

CPC分类号： H04W52/34 ,  H04W16/14 ,  H04W52/54 ,  H04W72/048 ,  H04W72/082 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/06

摘要： According to embodiments, a wireless communication apparatus supports at least a second wireless communication scheme between a first, wireless communication scheme and the second wireless communication scheme. The first wireless communication scheme requires that a wireless medium is determined to be busy when a reception level is equal to or greater than a minimum reception sensitivity level of physical scheme. The apparatus includes a first processing unit and a second processing unit. The first processing unit is configured to set a value lower than a maximum transmission power of the first wireless communication scheme, for a maximum transmission power of the second wireless communication scheme and set a value greater than the minimum reception sensitivity level, of the physical scheme, for a carrier sense level, when the second wireless communication scheme is used. The second processing unit is configured to carry out carrier sense using the carrier sense level.

摘要翻译： 根据实施例，无线通信装置支持第一无线通信方案和第二无线通信方案之间的至少第二无线通信方案。 第一无线通信方案要求当接收电平等于或大于物理方案的最小接收灵敏度级别时，无线介质被确定为忙。 该装置包括第一处理单元和第二处理单元。 第一处理单元被配置为针对第二无线通信方案的最大发送功率设置低于第一无线通信方案的最大发送功率的值，并且设置大于物理方案的最小接收灵敏度水平的值 对于载波感测电平，当使用第二无线通信方案时。 第二处理单元被配置为使用载波感测电平来执行载波侦听。

公开(公告)号：US20100157786A1

公开(公告)日：2010-06-24

申请号：US11814960

申请日：2007-03-09

申请人： Koji Akita ,  Koichiro Ban

发明人： Koji Akita ,  Koichiro Ban

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L27/2602 ,  H04L5/023 ,  H04L27/2657

摘要： According to an aspect of the present invention, there is provided with a radio communication method using an OFDMA scheme for uplink communication from a plurality of radio terminals to a base station, including: detecting communication states of the radio terminals; and arranging null subcarriers between subcarriers used by the radio terminals to which frequency bands neighboring on the frequency domain are assigned, depending on the communication states of the radio terminals.

摘要翻译： 根据本发明的一个方面，提供了一种使用OFDMA方案的从多个无线终端到基站的上行链路通信的无线通信方法，包括：检测无线终端的通信状态; 并且根据无线终端的通信状态，在被分配了与频域相邻的频带的无线终端使用的子载波之间排列无效的副载波。

公开(公告)号：US20090060090A1

公开(公告)日：2009-03-05

申请号：US12191549

申请日：2008-08-14

申请人： Koichiro BAN

发明人： Koichiro BAN

IPC分类号： H04L27/20 ,  H04L27/22

CPC分类号： H04L5/0007 ,  H04L5/0048 ,  H04L27/2613

摘要： There is provided with there is provided with a transmitter including: a pilot generation unit configured to generate a plurality of pilot symbols; a bit sequence generation unit configured to invert each bit in a first bit sequence to generate a second bit sequence; a transmission block generation unit configured to generate a transmission block by giving phase rotation determined according a value of each of bits in the first and second bit sequence to each of the pilot symbols corresponding to each of the bits; and a transmission unit configured to transmit the transmission block.

摘要翻译： 提供了一种发射机，包括：导频生成单元，被配置为生成多个导频符号; 比特序列生成单元，被配置为反转第一比特序列中的每个比特以产生第二比特序列; 发送块生成单元，被配置为通过将根据第一和第二比特序列中的每个比特的值确定的相位旋转给每个对应于每个比特的每个导频符号来生成发送块; 以及发送单元，被配置为发送所述发送块。

公开(公告)号：US20090003488A1

公开(公告)日：2009-01-01

申请号：US12036723

申请日：2008-02-25

申请人： Koichiro BAN

发明人： Koichiro BAN

IPC分类号： H04L27/00

CPC分类号： H04L27/0008 ,  H04L5/0007 ,  H04L25/03159 ,  H04L27/2071 ,  H04L27/2078 ,  H04L27/2607

摘要： There is provided with a transmitter including: a modulator configured to modulate a data bit sequence by alternately using first and second signal point sets to generate a data symbol sequence; a data block generator configured to generate data blocks each including a plurality of data symbols, an addition unit configured to add a guard interval to each data block to generate data blocks with guard intervals; and a controller configured to control modulation by the modulator so that an end data symbol of a first data block with the guard interval and a head data symbol of a second data block with the guard interval generated following the first data block with the guard interval belong to different signal point sets and data symbols in the first and second data blocks with the guard interval alternately belong to the first and second signal point sets.

摘要翻译： 提供了一种发射机，包括：调制器，被配置为通过交替地使用第一和第二信号点集来调制数据比特序列以产生数据符号序列; 被配置为生成包括多个数据符号的数据块的数据块发生器，被配置为向每个数据块添加保护间隔以产生具有保护间隔的数据块的加法单元; 以及控制器，被配置为控制调制器的调制，使得具有保护间隔的第一数据块的结束数据符号和具有与具有保护间隔的第一数据块之后生成的保护间隔的第二数据块的头数据符号属于 具有保护间隔的第一和第二数据块中的不同信号点集合和数据符号交替地属于第一和第二信号点集合。

公开(公告)号：US20080222482A1

公开(公告)日：2008-09-11

申请号：US12034812

申请日：2008-02-21

申请人： Koichiro Ban

发明人： Koichiro Ban

IPC分类号： H03M13/00 ,  G06F11/00 ,  H04L27/06

CPC分类号： H04L27/2607 ,  H03M13/23 ,  H03M13/27 ,  H03M13/6362

摘要： There is provided with a transmitter including: an input unit configured to input a data symbol sequence; a block generator configured to sequentially generate data blocks each including a plurality of data symbols by using the data symbol sequence; an addition unit configured to add a duplicate of h data symbols at an end of a first data block to a head of the first data block as a cyclic prefix to obtain a first data block with the cyclic prefix; and a transmission unit configured to transmit the first data block with the cyclic prefix, wherein the block generator uses, as k data symbols that precede the h data symbols at the end of the first data block, a duplicate of k data symbols at an end of a second data block that precedes the first data block.

摘要翻译： 提供了一种发射机，包括：输入单元，被配置为输入数据符号序列; 块生成器，被配置为通过使用所述数据符号序列顺序地生成包括多个数据符号的数据块; 附加单元，被配置为将第一数据块的结尾处的h个数据符号的副本作为循环前缀添加到第一数据块的头部，以获得具有循环前缀的第一数据块; 以及发送单元，被配置为用所述循环前缀发送所述第一数据块，其中所述块生成器使用在所述第一数据块的结尾处的h个数据符号之前的k个数据符号，在结束时使用k个数据符号的副本 的第一数据块之前的第二数据块。

公开(公告)号：US20080150803A1

公开(公告)日：2008-06-26

申请号：US11837104

申请日：2007-08-10

申请人： Koichiro BAN

发明人： Koichiro BAN

IPC分类号： H01Q1/00

CPC分类号： H04L25/0206 ,  H04L25/0212 ,  H04L25/023 ,  H04L27/2647

摘要： There is provided a communication method including: generating a channel estimated value for each antenna by performing channel estimation using a received signal by each antenna; calculating reception weights by which subcarriers assigned the received signal of each antenna are to be multiplied using a set of the channel estimated values; calculating a reception weight time profile for each antenna by converting the reception weights calculated for each antenna to data on a time domain; generating a transmission weight time profile for each antenna by extracting a certain section of each reception weight time profile; calculating transmission weights by which subcarriers assigned a transmission signal for each antenna are to be multiplied by converting each transmission weight time profile to data on a frequency domain; and multiplying subcarriers assigned the transmission signal for each antenna by the transmission weights of each antenna and transmit multiplied subcarriers through each antenna.

摘要翻译： 提供了一种通信方法，包括：通过使用每个天线的接收信号进行信道估计，生成每个天线的信道估计值; 计算使用一组信道估计值来乘以分配每个天线的接收信号的子载波的接收权重; 通过将针对每个天线计算的接收权重转换为时域上的数据来计算每个天线的接收权重时间曲线; 通过提取每个接收加权时间曲线的某个部分来产生每个天线的发送权重时间曲线; 计算通过将每个发送权重时间分布转换为频域上的数据来乘以每个天线分配了发送信号的子载波的发送权重; 以及将每个天线分配了发送信号的子载波乘以每个天线的发送权重，并通过每个天线发送相乘的子载波。

公开(公告)号：US20070202913A1

公开(公告)日：2007-08-30

申请号：US11677784

申请日：2007-02-22

申请人： Koichiro BAN

发明人： Koichiro BAN

IPC分类号： H04Q7/20

CPC分类号： H04W52/245 ,  H04W52/325

摘要： There is provided with a base station which carries out radio communication with mobile stations, including: a frame generation section configured to successively generate time frames to be transmitted to the mobile stations; a storage configured to store transmit power information specifying transmission power to be applied for each of a predetermined number of time frames being successive as one of first transmit power covering a whole of the communication area, second to nth (n is an integer equal to or greater than 2) transmit power covering areas smaller than the whole of the communication area; a transmit power control section configured to control transmit power of time frames successively generated by the frame generation section according to the transmit power information in units of the predetermined number of time frames; and a transmission section configured to transmit time frames power-controlled by the transmit power control section.

摘要翻译： 设置有与移动站进行无线通信的基站，包括：帧生成部，被配置为连续生成要发送到移动台的时间帧; 存储器，其被配置为存储发送功率信息，所述发送功率信息指定要连续施加的预定数量的时间帧中的每一个的发送功率作为覆盖整个通信区域的第一发送功率之一，第二到第n（n是等于或等于 大于2）传输覆盖面积小于整个通信区域的功率; 发送功率控制部，被配置为以所述预定时间帧为单位，根据所述发送功率信息来控制由所述帧生成部连续生成的时间帧的发送功率; 以及发送部，被配置为发送由所述发送功率控制部功率控制的时间帧。