公开(公告)号：US07957480B2

公开(公告)日：2011-06-07

申请号：US12140613

申请日：2008-06-17

申请人： Yoshimasa Egashira ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Yasuhiko Tanabe

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

CPC分类号： H04L27/3863 ,  H04L5/0051 ,  H04L27/2613 ,  H04L27/2647

摘要： A wireless communication apparatus generates transmission signal including first and second pilot signal sequences allocated to first and second frequencies symmetrically located in relation to a center frequency, and third and fourth pilot signal sequences allocated to third and fourth frequencies symmetrically located in relation to the center frequency, quadrature-modulates the transmission signal, to obtain a quadrature modulation signal, quadrature-demodulates the quadrature modulation signal, to obtain a reception signal, extracts first to fourth pilot signal sequences from the reception signal, estimates a first transfer characteristic concerning first and second frequency by using first and second pilot signal sequences, estimates a second transfer characteristic concerning third and fourth frequencies using third and the fourth pilot signal sequences, generates a third transfer characteristic from which an influence of transmission IQ imbalance is removed by using first and second transfer characteristic, and estimates, from the third transfer characteristic, reception IQ imbalance characteristic.

摘要翻译： 无线通信装置产生发送信号，该发送信号包括分配给关于中心频率对称地定位的第一和第二频率的第一和第二导频信号序列，以及分配给相对于中心频率对称地定位的第三和第四频率的第三和第四导频信号序列 对发送信号进行正交调制，得到正交调制信号，对正交调制信号进行正交解调，得到接收信号，从接收信号中提取第一至第四导频信号序列，估计第一和第二传输特性 通过使用第一和第二导频信号序列来估计使用第三和第四导频信号序列的关于第三和第四频率的第二传输特性，产生第三传输特性，通过使用第一和第二导频信号来消除传输IQ不平衡的影响 cond传递特性，并从第三传递特性估计接收IQ不平衡特性。

公开(公告)号：US07885360B2

公开(公告)日：2011-02-08

申请号：US11961269

申请日：2007-12-20

申请人： Yasuhiko Tanabe ,  Yoshimasa Egashira

发明人： Yasuhiko Tanabe ,  Yoshimasa Egashira

IPC分类号： H04L27/00

CPC分类号： H04L27/3863

摘要： A wireless communication apparatus receives an quadrature modulated signal, generate a local signal having a frequency different from a center frequency of the quadrature modulated signal, performs quadrature demodulation on the quadrature modulated signal by using the local signal, to obtain an I channel signal and a Q channel signal, performs Fourier transform on the I channel signal and the Q channel signal, to obtain signals in a frequency domain, and calculates a first correction coefficient for correcting phase distortion and amplitude distortion caused by the quadrature demodulation by using pairs of signals among the signals, each of the pairs are located at symmetrical frequency positions with respect to the frequency of the local signal.

摘要翻译： 无线通信装置接收正交调制信号，生成具有与正交调制信号的中心频率不同的频率的本地信号，通过使用本地信号对正交调制信号进行正交解调，得到I信道信号和 Q信道信号，对I信道信号和Q信道信号进行傅里叶变换，以获得频域中的信号，并且计算用于校正由正交解调引起的相位失真和幅度失真的第一校正系数， 信号中的每一对都相对于本地信号的频率位于对称的频率位置。

公开(公告)号：US07580446B2

公开(公告)日：2009-08-25

申请号：US11313834

申请日：2005-12-22

申请人： Yasuhiko Tanabe ,  Shuichi Obayashi

发明人： Yasuhiko Tanabe ,  Shuichi Obayashi

IPC分类号： H04B1/00 ,  H04J11/00

CPC分类号： H04L27/2608 ,  H04L1/0045 ,  H04L1/0057 ,  H04L25/0204

摘要： Radio communication apparatus includes unit dividing transmit data into first-and-second streams, unit subjecting first-and-second streams to serial-to-parallel conversion to obtain data signals, unit modulating data signals into OFDM-modulation signals corresponding to first and second streams using subcarriers, unit acquiring channel responses between communication and receiving apparatuses, unit computing singular values λ1(k) and λ2(k) of channel matrix corresponding to kth subcarrier in subcarriers, based on channel responses, unit assigning weights corresponding to singular values λ1(k) and λ2(k) to first-and-second streams where correspondence of weights to streams is different by subcarrier, unit multiplying, by each of assigned weights, OFDM-modulation signals corresponding to each of first and second streams, and acquire first-and-second signals corresponding to first-and-second streams, unit adding first-and-second signals to acquire added signals, unit subjecting added signals to inverse-Fourier transform, and unit transmitting, to receiving apparatus, signals output from subjecting unit.

摘要翻译： 无线电通信装置包括将发送数据分成第一和第二流的单元，将第一和第二流串行到并行转换单元，以获得数据信号，将数据信号单元调制成对应于第一和第二流的OFDM调制信号 使用子载波的单元，在通信和接收设备之间获取信道响应的单元，基于信道响应，对应于子载波中的第k个子载波的信道矩阵的单位计算奇异值λ1（k）和λ2（k），对应于奇异值λ1的单位分配权重 （k）和λ2（k）分配给第一和第二流，其中权重与流的对应通过子载波，单位乘以每个分配的权重，与对应于第一和第二流中的每一个的OFDM调制信号不同，并获取 对应于第一和第二流的第一和第二信号，单元添加第一和第二信号以获取附加信号，单位s 对信号进行逆傅里叶变换，并向接收装置发送从经受单元输出的信号。

公开(公告)号：US20090088174A1

公开(公告)日：2009-04-02

申请号：US12195547

申请日：2008-08-21

申请人： Shohei KIKUCHI ,  Yasuhiko Tanabe

发明人： Shohei KIKUCHI ,  Yasuhiko Tanabe

IPC分类号： H04Q7/20

CPC分类号： H04B7/0619 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W72/0413 ,  H04W72/085

摘要： A wireless communication apparatus performs simultaneous communication with a plurality of communication terminals by using the same frequency band. The apparatus including: a reception unit that receives feedback information from each of the communication terminals; an acquisition unit that acquires a correlation value between the latest feedback information and the feedback information previously stored in a storage unit for each of the communication terminals; a measurement unit that measures a delay time relating to the feedback information; a generation unit that generates a reliability parameter representing degree of error that is allowed in the feedback information based on the correlation value and the delay time; and a selection unit that selects two or more of the communication terminals from among the plurality of the communication terminals based on the reliability parameter.

摘要翻译： 无线通信装置通过使用相同的频带与多个通信终端进行同时通信。 该装置包括：接收单元，其从每个通信终端接收反馈信息; 获取单元，其获取所述最新反馈信息和预先存储在每个通信终端的存储单元中的反馈信息之间的相关值; 测量单元，其测量与所述反馈信息相关的延迟时间; 生成单元，其基于所述相关值和所述延迟时间生成表示所述反馈信息中允许的误差的可靠性参数; 以及选择单元，其基于所述可靠性参数从所述多个通信终端中选择所述通信终端中的两个以上。

公开(公告)号：US07480353B2

公开(公告)日：2009-01-20

申请号：US11009066

申请日：2004-12-13

申请人： Yasuhiko Tanabe

发明人： Yasuhiko Tanabe

IPC分类号： H04L27/06

CPC分类号： H04L25/0228 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0244 ,  H04L25/0248 ,  H04L27/2647

摘要： An estimation apparatus for estimating a channel response of a radio propagation path using a received signal including a first known signal, comprises a generator which generates a reference signal matrix, a calculator which calculates a generalized inverse matrix of the reference signal matrix including singular values which exceed a preset threshold value, an estimation unit configured to estimate an impulse response of the radio channel modeled using a transversal filter based on the first known signal and the generalized inverse matrix, and a converter which converts the estimated impulse response into a frequency-domain signal to acquire a frequency transfer function of the channel.

摘要翻译： 一种用于使用包括第一已知信号的接收信号来估计无线电传播路径的信道响应的估计装置，包括产生参考信号矩阵的发生器，计算包括奇异值的参考信号矩阵的广义逆矩阵的计算器， 超过预设阈值的估计单元，被配置为基于第一已知信号和广义逆矩阵来估计使用横向滤波器建模的无线电信道的脉冲响应的估计单元，以及将估计的脉冲响应转换为频域 信号以获取频道的频率传递函数。

公开(公告)号：US20080159442A1

公开(公告)日：2008-07-03

申请号：US11961269

申请日：2007-12-20

申请人： Yasuhiko Tanabe ,  Yoshimasa Egashira

发明人： Yasuhiko Tanabe ,  Yoshimasa Egashira

IPC分类号： H04L27/22

CPC分类号： H04L27/3863

摘要： A wireless communication apparatus receives an quadrature modulated signal, generate a local signal having a frequency different from a center frequency of the quadrature modulated signal, performs quadrature demodulation on the quadrature modulated signal by using the local signal, to obtain an I channel signal and a Q channel signal, performs Fourier transform on the I channel signal and the Q channel signal, to obtain signals in a frequency domain, and calculates a first correction coefficient for correcting phase distortion and amplitude distortion caused by the quadrature demodulation by using pairs of signals among the signals, each of the pairs are located at symmetrical frequency positions with respect to the frequency of the local signal.

摘要翻译： 无线通信装置接收正交调制信号，生成具有与正交调制信号的中心频率不同的频率的本地信号，通过使用本地信号对正交调制信号进行正交解调，得到I信道信号和 Q信道信号，对I信道信号和Q信道信号进行傅里叶变换，以获得频域中的信号，并且计算用于校正由正交解调引起的相位失真和幅度失真的第一校正系数， 信号中的每一对都相对于本地信号的频率位于对称的频率位置。

公开(公告)号：US09281830B2

公开(公告)日：2016-03-08

申请号：US13421391

申请日：2012-03-15

申请人： Shoji Otaka ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

发明人： Shoji Otaka ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

IPC分类号： H04B7/12 ,  H03L7/18 ,  H03L7/08 ,  H04L27/38 ,  H04W52/02

CPC分类号： H03L7/18 ,  H03L7/0802 ,  H04L27/38 ,  H04L27/3818 ,  H04W52/0229 ,  H04W52/0274 ,  Y02D70/142

摘要： A radio apparatus includes a first receiver that is a processing unit for amplifying and frequency converting a radio signal received via an antenna, thereby outputting an IF signal; a detector unit for detecting a preamble signal from the IF signal; a second receiver for amplifying and quadrature demodulating the radio signal, thereby generating an I-signal and a Q-signal; a demodulator unit for demodulating the I-signal and Q-signal to generate a data signal; and a control unit for halting the operation of the first receiver and further activating the second receiver when the detector unit detects the preamble signal and for activating the first receiver and halting the operation of the second receiver when the demodulator unit completes the demodulation of the I-signal and Q-signal.

摘要翻译： 无线电设备包括：第一接收机，其是用于放大和频率转换经由天线接收的无线电信号的处理单元，从而输出IF信号; 检测单元，用于检测来自IF信号的前置信号; 第二接收机，用于放大和正交解调无线电信号，由此产生I信号和Q信号; 解调器单元，用于解调I信号和Q信号以产生数据信号; 以及控制单元，用于当所述检测器单元检测到所述前导码信号并激活所述第一接收机并停止所述第二接收机的操作时，当所述解调器单元完成所述I的解调时，停止所述第一接收机的操作并进一步激活所述第二接收机 信号和Q信号。

公开(公告)号：US09032123B2

公开(公告)日：2015-05-12

申请号：US13004995

申请日：2011-01-12

申请人： Yasuhiko Tanabe

发明人： Yasuhiko Tanabe

IPC分类号： G06F13/12 ,  G06F13/38 ,  G06F13/20

CPC分类号： G06F13/38

摘要： A serial transmission device includes a transmitting unit that transmits data, a receiving unit that receives the data, and a plurality of serial transmission paths that connect the transmitting unit with the receiving unit and are used to transmit data. The receiving unit includes an inter-lane skew information generation unit that generates inter-lane skew information about skew of each of the serial transmission paths and transmits the generated inter-lane skew information to the transmitting unit. The transmitting unit includes a data conversion rule generation unit that generates a conversion rule used to determine distribution of the data to each of the serial transmission paths based on the inter-lane skew information.

摘要翻译： 串行传输设备包括发送数据的发送单元，接收数据的接收单元以及连接发送单元与接收单元并用于发送数据的多个串行传输路径。 接收单元包括：车道间偏斜信息生成单元，其生成关于每个串行传输路径的偏斜的车道间偏斜信息，并将生成的车道间偏斜信息发送到发送单元。 发送单元包括数据转换规则生成单元，其基于车道间歪斜信息生成用于确定到每个串行传输路径的数据的分配的转换规则。

公开(公告)号：US20080310534A1

公开(公告)日：2008-12-18

申请号：US12140613

申请日：2008-06-17

申请人： Yoshimasa Egashira ,  Yasuhiko Tanabe

发明人： Yoshimasa Egashira ,  Yasuhiko Tanabe

IPC分类号： H04L27/28

CPC分类号： H04L27/3863 ,  H04L5/0051 ,  H04L27/2613 ,  H04L27/2647

摘要： A wireless communication apparatus generates transmission signal including first and second pilot signal sequences allocated to first and second frequencies symmetrically located in relation to a center frequency, and third and fourth pilot signal sequences allocated to third and fourth frequencies symmetrically located in relation to the center frequency, quadrature-modulates the transmission signal, to obtain a quadrature modulation signal, quadrature-demodulates the quadrature modulation signal, to obtain a reception signal, extracts first to fourth pilot signal sequences from the reception signal, estimates a first transfer characteristic concerning first and second frequency by using first and second pilot signal sequences, estimates a second transfer characteristic concerning third and fourth frequencies using third and the fourth pilot signal sequences, generates a third transfer characteristic from which an influence of transmission IQ imbalance is removed by using first and second transfer characteristic, and estimates, from the third transfer characteristic, reception IQ imbalance characteristic.

摘要翻译： 无线通信装置产生发送信号，该发送信号包括分配给相对于中心频率对称地定位的第一和第二频率的第一和第二导频信号序列，以及分配给相对于中心频率对称地定位的第三和第四频率的第三和第四导频信号序列 对发送信号进行正交调制，得到正交调制信号，对正交调制信号进行正交解调，得到接收信号，从接收信号中提取第一至第四导频信号序列，估计第一和第二传输特性 通过使用第一和第二导频信号序列来估计使用第三和第四导频信号序列的关于第三和第四频率的第二传输特性，产生第三传输特性，通过使用第一和第二导频信号来消除传输IQ不平衡的影响 cond传递特性，并从第三传递特性估计接收IQ不平衡特性。

公开(公告)号：US20080008258A1

公开(公告)日：2008-01-10

申请号：US11672233

申请日：2007-02-07

申请人： Yasuhiko Tanabe

发明人： Yasuhiko Tanabe

IPC分类号： H04L1/02

CPC分类号： H04L25/0228 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/024

摘要： A wireless receiving apparatus includes antennas, a receiving unit configured to receive multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) signals via the antennas, an estimation unit configured to estimate channel response values of subcarriers included in the MIMO-OFDM signals, a first computation unit configured to compute an estimated channel-response error common to the subcarriers based on the estimated channel response values, a response correction unit configured to correct the estimated channel response values using the estimated channel-response error, and a second computation unit configured to perform preprocessing for demodulating the MIMO-OFDM signals, using the corrected channel response values.

摘要翻译： 无线接收装置包括天线，接收单元，被配置为经由天线接收多输入多输出正交频分复用（MIMO-OFDM）信号;估计单元，被配置为估计MIMO-OFDM信号中包括的子载波的信道响应值 ，第一计算单元，被配置为基于所估计的信道响应值来计算所述子载波公共的估计的信道响应误差;响应校正单元，被配置为使用所估计的信道响应误差来校正所估计的信道响应值;以及第二计算 被配置为使用校正的信道响应值来执行用于解调MIMO-OFDM信号的预处理。