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80 条记录 (耗时 0.016 秒)

    Wireless transmitting and receiving device and method
    71.
    发明授权
    Wireless transmitting and receiving device and method 有权
    无线发射和接收设备及方法

    公开(公告)号：US07587002B2

    公开(公告)日：2009-09-08

    申请号：US12239435

    申请日：2008-09-26

    申请人： Tsuguhide Aoki ,  Daisuke Takeda ,  Takahiro Kobayashi ,  Yasuhiko Tanabe

    发明人： Tsuguhide Aoki ,  Daisuke Takeda ,  Takahiro Kobayashi ,  Yasuhiko Tanabe

    IPC分类号： H04L27/00

    CPC分类号： H04L25/0226 ,  H03G3/3052 ,  H04B7/04 ,  H04W52/52 ,  H04W84/12

    摘要： A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.

    摘要翻译： 一种用于经由多个天线在发射设备和无线接收设备之间的无线分组通信中使用的无线设备，方法和信号，其中信号发生器生成包括用于第一自动增益控制的短前同步码序列的无线分组 （AGC），第一长前导码序列，用于传送无线分组的长度的信号字段，用于在第一AGC之后执行的第二AGC的AGC前同步码序列，第二长前导序列和 数据字段传送数据。 AGC前同步码序列由多个天线并行发送。

    WIRELESS COMMUNICATION APPARATUS AND METHOD
    73.
    发明申请
    WIRELESS COMMUNICATION APPARATUS AND METHOD 审中-公开
    无线通信装置和方法

    公开(公告)号：US20080279292A1

    公开(公告)日：2008-11-13

    申请号：US12052012

    申请日：2008-03-20

    申请人： Yasuhiko TANABE ,  Yoshimasa Egashira ,  Kazumi Sato

    发明人： Yasuhiko TANABE ,  Yoshimasa Egashira ,  Kazumi Sato

    IPC分类号： H04L27/28

    CPC分类号： H04L27/261 ,  H04L5/0051 ,  H04L25/022 ,  H04L25/0226

    摘要： The wireless transmission apparatus generates one or a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols for channel estimation, each OFDM symbol including plural subcarriers and having a known signal sequence of known signals which are linearly independent between adjacent subcarriers, and transmits the OFDM symbols.

    摘要翻译： 无线发送装置生成用于信道估计的一个或多个正交频分复用（OFDM）符号，每个OFDM符号包括多个子载波，并且具有在相邻子载波之间是线性独立的已知信号的已知信号序列，并且发送OFDM符号 。

    Wireless communication method using OFDM, OFDM receiving method and apparatus thereof
    74.
    发明申请
    Wireless communication method using OFDM, OFDM receiving method and apparatus thereof 有权
    使用OFDM的无线通信方法，OFDM接收方法及其装置

    公开(公告)号：US20080037410A1

    公开(公告)日：2008-02-14

    申请号：US11824028

    申请日：2007-06-29

    申请人： Yoshimasa Egashira ,  Yasuhiko Tanabe

    发明人： Yoshimasa Egashira ,  Yasuhiko Tanabe

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/261

    摘要： A receiving method receiving an OFDM signal including a first OFDM symbol having first and second pilot signals allocated to first and second subcarriers positioned symmetric on the frequency axis, and a second OFDM symbol having third and fourth pilot signals allocated to the first and the second subcarriers, a difference between a product of the first pilot signal and a complex conjugate of the fourth pilot signal and a product of the third pilot signal and a complex conjugate of the second pilot signal being non-zero, estimating a first coefficient representing a change components of an amplitude and a phase, and a second coefficient representing an interference component, using first and second received pilot signals corresponding to the first and third pilot signals, estimating from the first and second coefficients IQ imbalance, and compensating the influence of amplitude and phase errors in accordance with the IQ imbalance.

    摘要翻译： 一种接收OFDM信号的接收方法，包括具有分配给频率轴上对称的第一和第二子载波的第一和第二导频信号的第一OFDM符号，以及分配给第一和第二子载波的第三和第四导频信号的第二OFDM符号 ，第一导频信号的乘积与第四导频信号的复共轭与第三导频信号的乘积与第二导频信号的复共轭之间的差为零，估计表示变化分量的第一系数 使用表示干扰分量的第二系数，使用与第一和第三导频信号对应的第一和第二接收导频信号，从第一和第二系数IQ不平衡估计，并补偿振幅和相位的影响 按照IQ失调的误差。

    Wireless transmission device and wireless receiving device
    76.
    发明申请
    Wireless transmission device and wireless receiving device 有权

    公开(公告)号：US20060023667A1

    公开(公告)日：2006-02-02

    申请号：US11187853

    申请日：2005-07-25

    申请人： Yasuhiko Tanabe ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Kohsuke Harada

    发明人： Yasuhiko Tanabe ,  Daisuke Takeda ,  Tsuguhide Aoki ,  Kohsuke Harada

    IPC分类号： H04Q7/00

    CPC分类号： H04B7/04

    摘要： A wireless transmission device which communicates with a wireless reception device is provided with a transmission-signal-generating unit configured to generate, transmission signals having transmission rates arranged in order corresponding to an input order of data items of the information sequence. The transmission device is also provided with a preamble adder which adds, to the transmission signals, respective preamble signals assigned in order of the transmission rates and used for estimation of channel responses at the wireless reception device. The transmission device is further provided with transmission units configured to transmit the transmission signals with the preamble signals added thereto.

    Wireless communication apparatus
    77.
    发明申请
    Wireless communication apparatus 失效
    无线通信装置

    公开(公告)号：US20050286651A1

    公开(公告)日：2005-12-29

    申请号：US11167302

    申请日：2005-06-28

    申请人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

    发明人： Yoshimasa Egashira ,  Daisuke Takeda ,  Yasuhiko Tanabe

    IPC分类号： H04J99/00 ,  H04B7/02 ,  H04B7/06 ,  H04B7/10 ,  H04L1/02 ,  H04L27/26 ,  H04L27/28

    CPC分类号： H04B7/0691 ,  H04B7/02 ,  H04L27/261

    摘要： A wireless communication apparatus having a plurality of antennas for transmitting a known symbol by using a plurality of subcarriers to a receiver, the known symbol including known information, the apparatus includes each of the subcarriers which carries the known information being classified into at least two groups, and a phase control unit configure to control inversion/non-inversion of a phase of the known information carried on two subcarriers which belong to the same group in accordance with notification information to be notified to the receiver.

    摘要翻译： 一种具有多个天线的无线通信装置，用于通过使用多个子载波向接收机发送已知符号，所述已知符号包括已知信息，所述装置包括携带已知信息的每个子载波被分类为至少两个组 以及相位控制单元，其被配置为根据要通知给接收机的通知信息来控制属于同一组的两个子载波上携带的已知信息的相位的反相/非反相。

    Method and apparatus for estimating channel response and receiver apparatus using the estimated channel response for OFDM radio communication systems
    79.
    发明申请
    Method and apparatus for estimating channel response and receiver apparatus using the estimated channel response for OFDM radio communication systems 失效
    用于使用OFDM无线电通信系统的估计信道响应来估计信道响应和接收机装置的方法和装置

    公开(公告)号：US20050141649A1

    公开(公告)日：2005-06-30

    申请号：US11009066

    申请日：2004-12-13

    申请人： Yasuhiko Tanabe

    发明人： Yasuhiko Tanabe

    IPC分类号： H04J11/00 ,  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，被配置为基于所述第一已知信号和所述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，以及将所述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。

    Apparatus, circuit and method for receiving multipath wave
    80.
    发明申请
    Apparatus, circuit and method for receiving multipath wave 审中-公开
    用于接收多径波的装置，电路和方法

    公开(公告)号：US20050025262A1

    公开(公告)日：2005-02-03

    申请号：US10880505

    申请日：2004-07-01

    申请人： Yasuhiko Tanabe ,  Kuniaki Ito

    发明人： Yasuhiko Tanabe ,  Kuniaki Ito

    IPC分类号： H04J11/00 ,  H04B7/08 ,  H04B7/10 ,  H04L27/06

    CPC分类号： H04B7/0848 ,  Y02D70/444

    摘要： A controller controls weighting factors of received signals of combining units, such that impairment included in an output signal of the combining unit and impairment included in an output signal of the combining unit are mutually uncorrelated and that the combining units strongly receive different multipath signals which arrive at different propagation delay timing. Soft output decoders perform decoding by iterating soft output detection on the basis of the outputs of the combining units and results of mutual soft output detection, to enhance the reliability of likelihood information about the detected signal discrimination. After that, a hard output decoder performs hard output.

    摘要翻译： 控制器控制组合单元的接收信号的加权因子，使得包含在组合单元的输出信号中的损伤和组合单元的输出信号中包含的损害相互不相关，并且组合单元强烈地接收到达不同的多径信号 在不同的传播延迟定时。 软输出解码器通过基于组合单元的输出和相互软输出检测的结果迭代软输出检测来执行解码，以增强关于检测信号辨别的似然信息的可靠性。 之后，硬输出解码器执行硬输出。