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：US08532164B2

公开(公告)日：2013-09-10

申请号：US12920447

申请日：2009-03-10

申请人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda

发明人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Yasuaki Yuda

IPC分类号： H04B1/38

CPC分类号： H04W72/0406 ,  H04B1/16 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/08 ,  H04L1/1819 ,  H04L1/1887 ,  H04L1/1896 ,  H04W28/12 ,  H04W28/18

摘要： To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3

摘要翻译： 通过减少用于发送与重传控制有关的参数的资源并减少重传控制信令的开销来提高吞吐量。 考虑到可以改变编码率的自适应MCS控制采用重传控制方法的情况下，调度部根据通信对方装置通知的CQI来设定MCS。 当传输数据被编码时，RV参数位数设置部分设置用于使RV参数发信号的位数减少，因为第一传输的编码速率降低，并且基于比特数设置RV参数。 例如，在编码率R为R> 2/3的情况下，设定2比特。 在编码率1/3

公开(公告)号：US08520641B2

公开(公告)日：2013-08-27

申请号：US12979305

申请日：2010-12-27

申请人： Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

发明人： Takaaki Kisigami ,  Takashi Fukagawa ,  Yasuaki Yuda ,  Keiji Takausaki ,  Shoji Miyamoto

IPC分类号： H04W4/00

CPC分类号： H04B1/7113 ,  G01S3/74 ,  H04B1/7117 ,  H04B7/0617 ,  H04B7/086 ,  H04B2201/70701 ,  H04B2201/70715 ,  H04L1/06

摘要： A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without increasing throughput even if the power every path is low by estimating an average arrival direction of an entire set of multiple paths having the angular spread from a result of one angular spectrum by multiple correlation operation units that perform mutual correlation operations with pilot signals for baseband signals received by the array antenna, a path detection unit that detects multiple arrival path receiving timings by generating a delay profile based on output of each of the correlation operation units, a path correlation value synthesis unit that synthesizes a correlation operation value calculated in the multiple correlation operation units and an arrival direction estimation unit that collectively estimates multiple path arrival directions using output of the path correlation value synthesis unit.

公开(公告)号：US20110181471A1

公开(公告)日：2011-07-28

申请号：US13079415

申请日：2011-04-04

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： G01S3/14

CPC分类号： G01S3/043 ,  G01S3/14 ,  H04B7/086 ,  H04L27/2601

摘要： A device for estimating a direction-of-arrival of a radio wave, the device comprising an array antenna including a plurality of antenna elements for receiving a high frequency signal, a demultiplexer for demultiplexing the received high frequency signal for each of the plurality of antenna elements to generate a plurality of frequency component signals and a direction estimating unit for estimating the direction-of-arrival of the radio wave by using two or more of the plurality of frequency component signals which are contiguous in a frequency direction.

摘要翻译： 一种用于估计无线电波的到达方向的装置，该装置包括：阵列天线，包括用于接收高频信号的多个天线元件;解复用器，用于对接收到的多个天线中的每个天线的高频信号进行解复用 用于生成多个频率分量信号的单元;以及方向估计单元，用于通过使用在频率方向上连续的多个频率分量信号中的两个或更多个来估计无线电波的到达方向。

公开(公告)号：US20100135428A1

公开(公告)日：2010-06-03

申请号：US12376532

申请日：2007-08-07

申请人： Yasuaki Yuda ,  Masayuki Hoshino ,  Tomohiro Imai

发明人： Yasuaki Yuda ,  Masayuki Hoshino ,  Tomohiro Imai

IPC分类号： H04L27/00

CPC分类号： H04B7/04 ,  H04B7/0452 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0039 ,  H04L1/0072

摘要： There are disclosed a multiantenna radio transmitting apparatus and others wherein control information can be transmitted with enhanced reliability while overheads of transport signals being reduced. This apparatus uses a transmission antenna (Tx) (119) to SDM transmit transport data (1) (CW1) and also uses a transmission antenna (120) to SDM transmit transport data (2) (CW2). In this apparatus, when the transmission quality of the transmission antenna (Tx) (119) is better than that of the transmission antenna (Tx) (120), the control information (2) related to the transport data (2) (CW2) is transmitted in a space division multiplex mode via the transmission antenna (Tx) (119), while the control information (1) related to the transport data (1) (CW1) is transmitted in a diversity mode.

摘要翻译： 公开了一种多天线无线发送装置等，其中控制信息可以以更高的可靠性传输，同时降低了传输信号的开销。 该设备使用发送天线（Tx）（119）到SDM发送传输数据（1）（CW1），并且还使用发送天线（120）到SDM发送传输数据（2）（CW2）。 在该装置中，当发送天线（Tx）（119）的发送质量好于发送天线（Tx）（120）的发送质量时，与传输数据（2）（CW2）相关的控制信息（2） 通过发送天线（Tx）（119）以空分多路复用模式发送，而以分集模式发送与传输数据（1）（CW1）相关的控制信息（1）。

公开(公告)号：US20090291702A1

公开(公告)日：2009-11-26

申请号：US12293528

申请日：2007-03-23

申请人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda

发明人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda

IPC分类号： H04B17/00 ,  H04B7/00 ,  H04B1/04

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0628 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0643 ,  H04B7/0854 ,  H04L1/0003

摘要： Provided are a radio communication terminal and a radio communication base station device which are installed in a Multi-User MIMO system even if the ability to suppress interference is low. According to beam combination information fed back from NON-MIMO UE, and beam information and a CQI fed back from another MIMO UE, a scheduler section (102) allocates a space resource to the NON-MIMO UE and allocates the remaining resource to the another MIMO UE. According to the beam combination information, a beam weight generating section (104) generates weight. A transmission beam forming section (105) multiplies each stream outputted from modulation sections (103-1, 103-2) by the weight to form a transmission beam.

摘要翻译： 提供即使抑制干扰的能力低的情况下也安装在多用户MIMO系统中的无线通信终端和无线通信基站装置。 根据从NON-MIMO UE反馈的波束组合信息，以及波束信息和从另一个MIMO UE反馈的CQI，调度器部分（102）向NON-MIMO UE分配空间资源，并将剩余资源分配给另一个 MIMO UE。 根据光束组合信息，光束重量产生部分（104）产生重量。 发送波束形成部（105）将从调制部（103-1,103-2）输出的各流乘以权重，形成发送波束。

公开(公告)号：US20090238290A1

公开(公告)日：2009-09-24

申请号：US12091092

申请日：2006-10-27

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

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

IPC分类号： H04L27/28

CPC分类号： H04B7/0613 ,  H04B7/0684 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2613 ,  H04W24/00 ,  H04W48/08 ,  H04W72/04

摘要： Provided is a transmitting device which improves a data rate while maintaining channel estimation accuracy, or improves channel estimation accuracy while maintaining a data rate, in a MIMO-OFDM system. In the transmitting device, a transmitting antenna information adding section (104) adds transmitting antenna information to a pilot signal by performing different phase rotation to the separate pilot signal by transmitting antenna by having a common pilot signal as a reference phase. A pilot arranging section (107) is previously provided with, as a conversion table, a corresponding relationship between combination information of the transmitting antenna and a subcarrier to be used for transmission of the pilot signal and control information. The pilot arranging section (107) allocates the pilot signal outputted from the transmitting antenna information adding section (104) to the subcarrier to have the combination information in accordance with the control information.

摘要翻译： 提供了一种发送装置，其在维持信道估计精度的同时提高数据速率，或者在MIMO-OFDM系统中保持数据速率的同时提高信道估计精度。 在发送装置中，发送天线信息添加部（104）通过以公共导频信号作为参考相位，通过发送天线对分离导频信号进行不同相位旋转，将发送天线信息添加到导频信号。 导频安排部分（107）预先具有作为转换表的发送天线的组合信息和要用于发送导频信号的子载波和控制信息之间的对应关系。 导频安排部分（107）将从发射天线信息添加部分（104）输出的导频信号分配给子载波，以根据控制信息具有组合信息。

公开(公告)号：US07593317B2

公开(公告)日：2009-09-22

申请号：US10503010

申请日：2003-08-01

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

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

IPC分类号： H04J11/00

CPC分类号： H01Q3/2605 ,  H01Q3/267 ,  H04B7/0617 ,  H04B7/086 ,  H04B17/10 ,  H04B17/12 ,  H04B17/18 ,  H04B17/20 ,  H04B17/21 ,  H04L1/06 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

摘要： A transmission weight computing section computes a transmission weight for directional transmission using an OFDM signal. A transmission correcting value memory section stores one correcting value for correcting the transmission weight for each sub-carrier of an OFDM signal or each band gathering a plurality of sub-carriers. A transmission weight correcting section corrects the transmission weight by the correcting value. A transmitting branch weights transmission data by a transmission weight outputted from the transmission weight correcting section on a sub-carrier-by-sub-carrier basis and delivers it to an antenna.

摘要翻译： 传输权重计算部分使用OFDM信号来计算定向传输的传输权重。 发送校正值存储部存储用于校正OFDM信号的每个子载波的发送权重或收集多个子载波的每个频带的一个校正值。 发送权重校正部通过校正值来校正发送权重。 发送分支通过从子载波子载波基础上从发送加权校正部分输出的发送权重对发送数据进行加权，并将其发送到天线。

公开(公告)号：US20080273517A1

公开(公告)日：2008-11-06

申请号：US11912636

申请日：2006-04-26

申请人： Akihiko Nishio ,  Yasuaki Yuda

发明人： Akihiko Nishio ,  Yasuaki Yuda

IPC分类号： H04J3/00

CPC分类号： H04L5/0053 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1812 ,  H04L27/2626 ,  H04L27/2647

摘要： The circuit scale of a wireless communication apparatus at the data receiving end in a wireless communication performing an adaptive control for each of subcarriers or subchannels can be reduced. In the present apparatus, frame forming parts (103-1 to 103-m) each multiplex a pilot, control information and transport data to form a frame for a respective one of subchannels (1 to m). A subcarrier assigning part (104) assigns subcarriers designated from an adaptive control part (114) to the respective frames formed by the frame forming parts (103-1 to 103-m). A timing control part (105) establishes mutually different frame timing offsets to the respective frames received from the subcarrier assigning part (104).

摘要翻译： 可以减少对每个子载波或子信道执行自适应控制的无线通信中的数据接收端的无线通信装置的电路规模。 在本装置中，帧形成部（103-1〜103-m）各自复用导频，控制信息和传输数据，以形成子信道（1〜m）中的各个子帧的帧。 子载波分配部分（104）将从自适应控制部分（114）指定的子载波分配给由帧形成部分（103-1至103-m）形成的各个帧。 定时控制部分（105）为从子载波分配部分（104）接收到的各个帧建立相互不同的帧定时偏移。