公开(公告)号：US20100075703A1

公开(公告)日：2010-03-25

申请号：US12523280

申请日：2008-01-25

申请人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

发明人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

IPC分类号： H04B15/00 ,  H04B1/04 ,  H04L1/08 ,  G06F11/14 ,  H04B1/10

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1835 ,  H04L2001/0093 ,  H04W72/085

摘要： In a multiuser MIMO system, entire system throughput achieved during retransmission is significantly enhanced. When an interference signal addressed to another user equipment (UE2) 200b has been demodulated successfully, a user equipment (UE1) 200a holds the demodulated data pertaining to the interference signal, and feeds back ACK information about the UE2 and CQI information achieved after elimination of the interference signal to a radio base station (BS) 100. When the UE2 performs retransmission after ended in a receiving failure and when the UE1 has demodulated the interference signal addressed to the UE2 successfully, the BS changes the distribution of communication resources in such a way that communication resources for the UE2 become larger than those for the UE1. At the time of retransmission, the UE1 eliminates the interference signal from a newly-received signal by use of previously-held demodulated data pertaining to the interference signal, and the UE2 combines data pertaining to the desired signal held during previous receiving failure with data pertaining to the retransmitted signal by means of soft combining.

摘要翻译： 在多用户MIMO系统中，在重传期间实现的整个系统吞吐量显着增强。 当寻址到另一用户设备（UE2）200b的干扰信号已被成功解调时，用户设备（UE1）200a保存与干扰信号相关的解调数据，并且反馈关于UE2的ACK信息和消除后的CQI信息 对无线基站（BS）100的干扰信号。当UE2在接收到故障结束后进行重发时，并且当UE1成功地解调了寻址到UE2的干扰信号时，BS改变这样的通信资源的分配 UE2的通信资源变得大于UE1的通信资源的方式。 在重发时，UE1通过使用与干扰信号有关的先前保持的解调数据来消除来自新接收信号的干扰信号，并且UE2将与先前接收失败期间保持的期望信号有关的数据与属于 通过软组合到重发信号。

公开(公告)号：US20090060082A1

公开(公告)日：2009-03-05

申请号：US11912832

申请日：2006-04-26

申请人： Yasuaki Yuda ,  Tomohiro Imai ,  Masayuki Hoshino ,  Ryohei Kimura

发明人： Yasuaki Yuda ,  Tomohiro Imai ,  Masayuki Hoshino ,  Ryohei Kimura

IPC分类号： H04B7/02

CPC分类号： H04L25/0206 ,  H04B7/0421 ,  H04B7/0626 ,  H04B7/065

摘要： A wireless communication apparatus that allows channel information to be reproduced with high precision at a transmitting end without increasing feedback information amount. In this apparatus, a channel estimating part (103) uses received pilot signals to perform channel estimation for each channel. A correlation detecting part (104) uses the result of the channel estimation to obtain correlation values between the channels, thereby detecting correlation values of all channels. An amplitude/phase ratio determining part (105) determines, based on the correlation values, the quantization bit ratio of the amplitude and phase of channel information to be used when those amplitude and phase are quantized. A feedback information generating part (106) quantizes the channel information in accordance with the determined ratio of the amplitude and phase.

摘要翻译： 一种允许在发送端以高精度再现信道信息而不增加反馈信息量的无线通信装置。 在该装置中，信道估计部（103）使用接收到的导频信号对每个信道进行信道估计。 相关检测部（104）使用信道估计的结果来获得信道之间的相关值，从而检测所有信道的相关值。 幅度/相位比确定部分（105）基于相关值，确定当这些幅度和相位被量化时要使用的信道信息的幅度和相位的量化比特率。 反馈信息生成部（106）根据所确定的振幅和相位的比率量化通道信息。

公开(公告)号：US07088956B2

公开(公告)日：2006-08-08

申请号：US10411344

申请日：2003-04-10

申请人： Takaaki Kishigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takakusaki ,  Shoji Miyamoto

发明人： Takaaki Kishigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takakusaki ,  Shoji Miyamoto

IPC分类号： H04B1/00 ,  H04B15/00

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04B7/086

摘要： A path search circuit according to the present invention has an orthogonal multi-beam forming section 4 for directional reception with a plurality of orthogonal multi-beams orthogonal one to another, correlation-operating sections 61–6M for correlation-operating outputs of the orthogonal multi-beam forming section 4 with a known signal, weight multiplying sections 81–8Nb for multiplying the output of the correlation-operating section 61–6M by a weight converted into a beam space, delay profile generating sections 91–9Nb for generating delay profiles from the output signals of the weight multiplying sections 81–8Nb, and a path detecting section 10 for detecting a reception timing and arrival direction of arrival path from the delay profile. This path search circuit can enhance the accuracy of path direction detection by the use of a directional reception signal, and further reduce the direction dependence of path timing detection accuracy.

摘要翻译： 根据本发明的路径搜索电路具有用于定向接收的正交多波束形成部分4，其中多个正交多波束彼此正交，相关运算部分61-6M用于正交的相关运算输出 具有已知信号的多波束形成部分4，用于将相关操作部分61-6M的输出乘以被转换成波束空间的权重的加权乘法部分81-8 Nb，延迟分布生成部分91-9 Nb 从权重乘法部分81-8 Nb的输出信号产生延迟分布;以及路径检测部分10，用于从延迟分布中检测接收定时和到达方向到达方向。 该路径搜索电路可以通过使用定向接收信号来提高路径方向检测的精度，进一步减小路径定时检测精度的方向依赖性。

公开(公告)号：US06897807B2

公开(公告)日：2005-05-24

申请号：US10817978

申请日：2004-04-05

申请人： Takaaki Kishigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Masayuki Hoshino

发明人： Takaaki Kishigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Masayuki Hoshino

IPC分类号： G01S3/74 ,  G06K9/00 ,  G01S5/02

CPC分类号： G06K9/0057 ,  G01S3/74

摘要： A radio-wave arrival-direction apparatus calculates a correlation matrix of received signals by correlation calculation between antenna elements, and calculates a noise spatial eigenmatrix, of which each row or column is an eigenvector belonging to a noise eigen-space, by eigenvalue factorization of the correlation matrix. The apparatus also factorizes a matrix including a product of the noise spatial eigenmatrix and a conjugated and transposed matrix of it to an upper or lower triangular matrix, using cholesky factorization. The apparatus calculates an angle evaluation value in a predetermined angle range of an arrival-angle evaluation function using the derived upper or lower triangular matrix, and determines an arrival angle based on the calculation result. A calculation amount in a variable angle range can be thus reduced without causing accuracy degradation of arrival direction, in an algorism requiring all angle sweep for arrival angle estimation of MUSIC method or the like.

摘要翻译： 无线电波到达方向装置通过天线元件之间的相关计算来计算接收信号的相关矩阵，并且通过特征值因子分解来计算其每行或列是属于噪声特征空间的特征向量的噪声空间本征矩阵 相关矩阵。 该装置还使用cholesky因式分解将包括噪声空间本征矩阵的乘积和其共轭和转置矩阵的矩阵分解为上或下三角矩阵。 该装置使用导出的上下三角矩阵来计算到达角度评估函数的预定角度范围内的角度评估值，并且基于计算结果确定到达角度。 在可能的角度范围内的计算量可以在不需要对MUSIC方法等的到达角度估计进行所有角度扫描的算法中而不会导致到达方向的精度降低而降低。

公开(公告)号：US08379750B2

公开(公告)日：2013-02-19

申请号：US12664953

申请日：2008-06-24

申请人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda ,  Ryohei Kimura

发明人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda ,  Ryohei Kimura

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/0408 ,  H04B7/0417

摘要： The signaling amount in selecting a plurality of beams is reduced in pre-coding to thereby enhance the throughput. To select a plurality of beams when the pre-coding is applied, when notification of a beam number is provided in a feedback signal from a user equipment 102 as a reception station to a radio base station 101 as a transmission station, a superior beam number having a high quality rank with small time variation is bound up and fixed for a predetermined time period and notification of only a inferior beam number is provided within the time period. For example, to select three beams from six beams, first, notification of the superior two beam numbers (beam numbers ‘b’ and ‘c’) is provided and the superior beam numbers are fixed for a predetermined time period and then notification of only the inferior one beam number (beam number ‘e’) is provided within the predetermined time period for reducing the signaling amount for providing beam number notification.

摘要翻译： 在预编码中减少了选择多个光束的信令量，从而提高了吞吐量。 为了在应用预编码时选择多个波束，当在作为接收站的用户设备102作为发送站的无线基站101的反馈信号中提供波束号的通知时，优先的波束号 具有小时间变化的高质量等级被约束并固定预定时间段，并且在该时间段内提供仅次于较差波束号的通知。 例如，为了从六个光束中选择三个光束，首先提供上述两个光束号（光束号b和c）的通知，并且将上级光束号固定预定的时间段，然后仅通知下一个光束 在预定时间段内提供数字（波束编号e），以减少用于提供波束号通知的信令量。

公开(公告)号：US20100211844A1

公开(公告)日：2010-08-19

申请号：US12679726

申请日：2008-09-24

申请人： Yasuaki Yuda ,  Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Atsushi Sumasu

发明人： Yasuaki Yuda ,  Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Atsushi Sumasu

IPC分类号： H04L1/18 ,  G06F11/14

CPC分类号： H04L1/06 ,  H04L1/0025 ,  H04L1/1671 ,  H04L1/1893

摘要： Lowering of the frequency use efficiency and throughput is prevented while the blanking advantage is provided at the retransmission time in MCW using a plurality of streams per codeword. In a wireless communication apparatus for using a plurality of streams per codeword and performing data transmission according to a plurality of codewords, when two codewords are transmitted using four streams, for example, from a base station 101 to a user terminal 102, if retransmission occurs in the codeword, the codewords and the streams are arranged so as to decrease the number of streams with the number of codewords intact so that retransmission codeword is transmitted in two streams and new codeword is transmitted in one stream.

摘要翻译： 防止频率使用效率和吞吐量的降低，而在MCW中的重传时间使用每个码字的多个流提供消隐优势。 在每个码字使用多个流并根据多个码字执行数据传输的无线通信装置中，当使用四个流（例如从基站101到用户终端102）发送两个码字时，如果重发发生 在码字中，码字和流被布置为减少码字数量不变的流的数量，使得在两个流中发送重发码字，并且在一个流中传输新的码字。

公开(公告)号：US20100195749A1

公开(公告)日：2010-08-05

申请号：US12665204

申请日：2008-06-18

申请人： Ryohei Kimura ,  Masayuki Hoshino ,  Yasuaki Yuda

发明人： Ryohei Kimura ,  Masayuki Hoshino ,  Yasuaki Yuda

IPC分类号： H04L27/28

CPC分类号： H04B7/0671 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/009 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/006 ,  H04L27/2626

摘要： Provided is a radio communication device which can reduce the affect of CDD channel fluctuation of an interference signal from other cell when using a CDD. In this device, an arrangement unit (105) arranges some of the symbols inputted from a repetition unit (104) in a subcarrier positioned at the top portion of the CDD channel fluctuation of the LD-CDD and arranges the other symbols in a subcarrier at the bottom portion of the CDD channel fluctuation of the LD-CDD. A cyclic delay unit (106-1) and a cyclic delay unit (106-2) supply different cyclic delays to the respective symbols arranged in a plurality of subcarriers among signals inputted from the arrangement unit (105) according to the CDD mode inputted from a transmission parameter control unit (101).

摘要翻译： 提供一种无线电通信装置，其可以在使用CDD时降低来自其他小区的干扰信号的CDD信道波动的影响。 在该装置中，排列单元（105）将从重复单元（104）输入的一些符号配置在位于LD-CDD的CDD信道波动的顶部的子载波中，并将其他符号排列在副载波中 LDD CDD的CDD通道波动的底部。 循环延迟单元（106-1）和循环延迟单元（106-2）根据从所述布置单元（105）输入的CDD模式输入的信号，向排列在多个子载波中的各个符号提供不同的循环延迟 传输参数控制单元（101）。

公开(公告)号：US20100189189A1

公开(公告)日：2010-07-29

申请号：US12664953

申请日：2008-06-24

申请人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda ,  Ryohei Kimura

发明人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda ,  Ryohei Kimura

IPC分类号： H04L1/02 ,  H04B7/00

CPC分类号： H04B7/0617 ,  H04B7/0408 ,  H04B7/0417

摘要： The signaling amount in selecting a plurality of beams is reduced in pre-coding to thereby enhance the throughput. To select a plurality of beams when the pre-coding is applied, when notification of a beam number is provided in a feedback signal from a user equipment 102 as a reception station to a radio base station 101 as a transmission station, a superior beam number having a high quality rank with small time variation is bound up and fixed for a predetermined time period and notification of only a inferior beam number is provided within the time period. For example, to select three beams from six beams, first, notification of the superior two beam numbers (beam numbers ‘b’ and ‘c’) is provided and the superior beam numbers are fixed for a predetermined time period and then notification of only the inferior one beam number (beam number ‘e’) is provided within the predetermined time period for reducing the signaling amount for providing beam number notification.

摘要翻译： 在预编码中减少了选择多个光束的信令量，从而提高了吞吐量。 为了在应用预编码时选择多个波束，当在作为接收站的用户设备102作为发送站的无线基站101的反馈信号中提供波束号的通知时，优先的波束号 具有小时间变化的高质量等级被约束并固定预定时间段，并且在该时间段内提供仅次于较差波束号的通知。 例如，为了从六个光束中选择三个光束，首先提供上述两个光束号（光束号'b'和'c'）的通知，并且将上级光束号固定一段预定时间段，然后仅通知 在预定时间段内提供较差的一个波束号（波束号“e”），用于减少用于提供波束号通知的信令量。

公开(公告)号：US07725074B2

公开(公告)日：2010-05-25

申请号：US11816620

申请日：2006-02-16

申请人： Akihiko Nishio ,  Yasuaki Yuda ,  Tomohiro Imai

发明人： Akihiko Nishio ,  Yasuaki Yuda ,  Tomohiro Imai

IPC分类号： H04B7/14 ,  H04B3/36

CPC分类号： H04B7/15542 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0048 ,  H04L25/0226 ,  H04W16/14 ,  H04W48/08 ,  H04W88/04

摘要： A wireless communication method and the like for improving the system throughput. The wireless communication method is used in a mobile communication system having a base station apparatus (BS), a relay station apparatus (RS) (100) and a mobile station apparatus (MS) #1. In a first transmission step, a first transport signal, which includes data addressed to MS #1, is transmitted from BS to RS (100). In a second transmission step, a second transport signal, which includes a pilot generated by BS, is transmitted from BS. Simultaneously, in the second transmission step, a relay signal, which includes the data addressed to MS #1 and also includes a pilot that is generated by RS (100) and that has a particular orthogonal relationship with the pilot generated by BS, is transmitted from RS (100) to MS #1.

摘要翻译： 一种用于提高系统吞吐量的无线通信方法等。 无线通信方法用于具有基站装置（BS），中继站装置（RS）（100）和移动台装置（MS）＃1的移动通信系统。 在第一传输步骤中，包括寻址到MS＃1的数据的第一传输信号从BS发送到RS（100）。 在第二传输步骤中，从BS发送包括由BS产生的导频的第二传输信号。 同时，在第二发送步骤中，发送包括寻址到MS＃1的数据并且还包括由RS（100）生成并与由BS产生的导频具有特定正交关系的导频的中继信号 从RS（100）到MS＃1。

公开(公告)号：US07676005B2

公开(公告)日：2010-03-09

申请号：US10598441

申请日：2005-08-02

申请人： Yasuaki Yuda ,  Takaaki Kishigami ,  Takashi Fukagawa ,  Yoichi Nakagawa ,  Shinichiro Takabayashi

发明人： Yasuaki Yuda ,  Takaaki Kishigami ,  Takashi Fukagawa ,  Yoichi Nakagawa ,  Shinichiro Takabayashi

IPC分类号： H03D1/04

CPC分类号： H04B7/0619 ,  H04B7/0617 ,  H04B7/086 ,  H04B17/11 ,  H04B17/21

摘要： In a wireless communication apparatus adopting a time division duplex system for executing transmission and reception using a plurality of antennas, deviation of amplitude and phase occurring between transmission and reception circuits is detected and corrected using a communication signal. Channel estimation means 105 detects channel information based on reception output of reception circuits 104-1 to 104-N provided in a one-to-one correspondence with a plurality of antennas 101-1 to 101-N. Correction value detection means 110 finds a correction value for correcting deviation occurring between each of transmission circuits 103-1 to 103-N and each of the reception circuits 104-1 to 104-N based on the channel information. A wireless communication apparatus 100 transmits an already known signal (training signal) to a base station with which the wireless communication apparatus conducts communications. The base station executes channel estimation based on the already known signal and generates and transmits a correction signal (probe signal). The correction value detection means 110 of the wireless communication apparatus 100 detects the correction value using the correction signal (probe signal).

摘要翻译： 在采用使用多个天线执行发送和接收的时分双工系统的无线通信装置中，使用通信信号来检测和校正发送和接收电路之间发生的振幅和相位的偏差。 信道估计装置105基于与多个天线101-1至101-N一一对应地提供的接收电路104-1至104-N的接收输出来检测信道信息。 修正值检测单元110基于通道信息，求出用于校正发送电路103-1〜103-N和各接收电路104-1〜104-N的偏差的校正值。 无线通信装置100向无线通信装置进行通信的基站发送已知的信号（训练信号）。 基站根据已知的信号进行信道估计，生成并发送校正信号（探测信号）。 无线通信装置100的校正值检测装置110使用校正信号（探测信号）来检测校正值。