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    Radio communication apparatus and radio communication method
    2.
    发明授权
    Radio communication apparatus and radio communication method 有权
    无线电通信装置和无线电通信方法

    公开(公告)号：US07848711B2

    公开(公告)日：2010-12-07

    申请号：US11694124

    申请日：2007-03-30

    申请人： Takahiro Asai ,  Hui Shi ,  Hiromasa Fujii ,  Takefumi Yamada ,  Hitoshi Yoshino ,  Hiroshi Suzuki ,  Kazuhiko Fukawa ,  Satoshi Suyama

    发明人： Takahiro Asai ,  Hui Shi ,  Hiromasa Fujii ,  Takefumi Yamada ,  Hitoshi Yoshino ,  Hiroshi Suzuki ,  Kazuhiko Fukawa ,  Satoshi Suyama

    IPC分类号： H04B1/50 ,  H04B1/10

    CPC分类号： H04B1/525

    摘要： A radio communication apparatus for performing transmission and reception based on radio communication includes: a power suppressor for coupling loop interference signal for attenuating signal power of a received signal to suppress the coupling loop interference signal power of the received signal; and a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor for coupling loop interference signal.

    摘要翻译： 一种用于基于无线电通信进行发送和接收的无线电通信装置包括：功率抑制器，用于耦合环路干扰信号，用于衰减接收信号的信号功率，以抑制接收信号的耦合环路干扰信号功率; 以及具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字域的耦合环路干扰信号去除功能的收发器，用于去除包含在从功率抑制器输出的用于耦合环路干扰信号的信号中的耦合环路干扰信号。

    Spread spectrum transmitter and receiver employing composite spreading codes
    3.
    发明授权
    Spread spectrum transmitter and receiver employing composite spreading codes 失效
    使用复合扩展码的扩频发射机和接收机

    公开(公告)号：US6128332A

    公开(公告)日：2000-10-03

    申请号：US990286

    申请日：1997-12-15

    申请人： Kazuhiko Fukawa ,  Hiroshi Suzuki

    发明人： Kazuhiko Fukawa ,  Hiroshi Suzuki

    IPC分类号： H04B1/707 ,  H04B1/7103 ,  H04B1/7183 ,  H04J13/00 ,  H04J13/10 ,  H04J13/04

    CPC分类号： H04J13/0077 ,  H04B1/7103 ,  H04J13/10 ,  H04J13/107 ,  H04B1/7183 ,  H04B2201/709709

    摘要： In a system with a spread spectrum transmitter and receiver employing composite spreading codes, the transmitter spreads, in a spreading part, a baseband modulated signal by a short code from a short code generator and a long code from a long code generator with a longer chip period than that of the short code and then transmits the spread baseband modulated signal. The receiver despreads a spread baseband received signal in a receiving part by a pair of short and long codes in one despreading part to obtain a baseband modulated signal of a direct path and despreads the spread baseband received signal by the pair of short and long codes delayed by a multipath delay time difference in the other despreading part to obtain a baseband modulated signal of a delayed path, and the baseband modulated signals thus obtained are diversity-detected to obtain a detected baseband signal.

    摘要翻译： 在具有采用复合扩展码的扩频发射机和接收机的系统中，发射机在扩展部分中通过来自短码发生器的短码和来自具有较长码片的长码发生器的长码扩展基带调制信号 周期，然后发送扩展的基带调制信号。 接收机通过一个解扩部分中的一对短和长码对接收部分中的扩展基带接收信号进行解扩，以获得直接路径的基带调制信号，并通过延迟的一对短和长码对扩展的基带接收信号进行解扩 通过另一个解扩部分中的多径延迟时间差来获得延迟路径的基带调制信号，并且对这样获得的基带调制信号进行分集检测以获得检测的基带信号。

    Adaptive equalizer
    4.
    发明授权
    Adaptive equalizer 失效
    自适应均衡器

    公开(公告)号：US5710792A

    公开(公告)日：1998-01-20

    申请号：US416858

    申请日：1995-04-17

    申请人： Kazuhiko Fukawa ,  Hitoshi Yoshino ,  Hiroshi Suzuki

    发明人： Kazuhiko Fukawa ,  Hitoshi Yoshino ,  Hiroshi Suzuki

    IPC分类号： H04B7/005 ,  H04L25/03 ,  H04L27/01 ,  H03H7/30

    CPC分类号： H04L25/03273

    摘要： A baseband signal, obtained by quasi-coherent detecting a received signal, is sampled and written as a sequence of baseband signal samples into a buffer memory. For each baseband signal sample read out from the buffer memory, a maximum likelihood sequence estimation part generates a desired symbol sequence and feeds it to a transversal filter having a characteristic based on an estimated impulse response of the transmission path in correspondence with the timing of the baseband signal sample. A phase error between an estimated received signal from the transversal filter and the corresponding baseband signal sample is sequentially detected by a phase error detecting part. The phase error thus obtained is fed to an offset correcting signal generating part, which calculates an estimated offset angular frequency .DELTA..omega..sub.e on the basis of the phase error, generates an offset correcting signal of an angular frequency equal in absolute value to the estimated offset angular frequency but opposite thereto in the direction of rotation and feeds the offset correcting signal to a correcting multiplier. The correcting multiplier multiplies the baseband signal sample by the offset correcting signal to correct it to cancel an angular frequency offset, and a subtractor calculates a difference between the corrected baseband signal sample and the estimated received signal from the transversal filter.

    摘要翻译： PCT No.PCT / JP94 / 02092 Sec。 371日期1995年04月17日 102（e）日期1995年4月17日PCT 1994年12月14日PCT PCT。 第WO95 / 17052号公报 日期：1995年6月22日通过准相干检测接收信号获得的基带信号被采样并作为基带信号采样序列写入缓冲存储器。 对于从缓冲存储器读出的每个基带信号样本，最大似然序列估计部分产生期望的符号序列，并将其馈送到具有基于传输路径的估计的脉冲响应的特性的横向滤波器 基带信号样本。 来自横向滤波器的估计接收信号与对应的基带信号采样之间的相位误差由相位误差检测部分依次检测。 这样获得的相位误差被馈送到偏移校正信号产生部分，该偏移校正信号产生部分基于相位误差来计算估计偏移角频率ΔTATA，生成绝对值等于估计偏移的角频率的偏移校正信号 角度频率但与旋转方向相反，并将偏移校正信号馈送到校正乘数。 校正乘法器将基带信号采样乘以偏移校正信号以对其进行校正以消除角频率偏移，并且减法器计算经校正的基带信号样本与来自横向滤波器的估计的接收信号之间的差。

    Interference signal cancelling method, receiver and communication system using the same
    5.
    发明授权
    Interference signal cancelling method, receiver and communication system using the same 失效
    干扰信号消除方法，接收机和通信系统使用相同

    公开(公告)号：US5537443A

    公开(公告)日：1996-07-16

    申请号：US302735

    申请日：1994-09-09

    申请人： Hitoshi Yoshino ,  Kazuhiko Fukawa ,  Hiroshi Suzuki

    发明人： Hitoshi Yoshino ,  Kazuhiko Fukawa ,  Hiroshi Suzuki

    IPC分类号： H04B1/12 ,  H04L25/02 ,  H04L25/03 ,  H03D1/00 ,  H04L27/06

    CPC分类号： H04L25/03305 ,  H04B1/123 ,  H04L25/025 ,  H04L25/03292 ,  H04L25/03331

    摘要： Pluralities of estimated desired and interference signal sequence candidates corresponding to the states of transition of desired and interference signals estimated to receive are sequentially generated in a state estimation part 40, from which they are provided to a desired signal estimation part 10 and an interference signal estimation part 20. These estimation parts 10 and 20 generate estimated desired and interference signals from the sequence candidates in accordance with conversion parameters from a channel parameter estimation part 50. A signal of their sum is subtracted in an error estimation part 30 from a received signal to yield an estimation error signal .epsilon.. The state estimation part 40 estimates estimated desired and interference signal sequences for the generated sequence candidates.

    摘要翻译： PCT No.PCT / JP94 / 00059 Sec。 371日期1994年9月9日 102（e）1994年9月9日PCT 1994年1月18日PCT PCT。 WO94 / 17600 PCT出版物 日期为1994年8月4日。在状态估计部40中顺序生成与估计接收的期望信号和干扰信号的转换状态对应的估计的期望信号序列候选和干扰信号序列候选数据，并将其提供给期望的信号估计 部分10和干扰信号估计部分20.这些估计部分10和20根据来自信道参数估计部分50的转换参数从序列候选产生估计的期望信号和干扰信号。在误差估计中减去它们的和的信号 部分30从接收到的信号产生估计误差信号ε。 状态估计部40估计所生成的序列候选的估计的期望信号序列和干扰信号序列。

    RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM
    6.
    发明申请
    RECEIVING DEVICE, RECEIVING METHOD, AND RECEIVING PROGRAM 有权
    接收设备，接收方法和接收程序

    公开(公告)号：US20140192936A1

    公开(公告)日：2014-07-10

    申请号：US14237601

    申请日：2012-08-06

    申请人： Kazuhiko Fukawa ,  Hiroshi Suzuki ,  Satoshi Suyama ,  Ryota Yamada ,  Takashi Yoshimoto ,  Naoki Okamoto

    发明人： Kazuhiko Fukawa ,  Hiroshi Suzuki ,  Satoshi Suyama ,  Ryota Yamada ,  Takashi Yoshimoto ,  Naoki Okamoto

    IPC分类号： H04L1/00 ,  H04B7/04

    CPC分类号： H04L1/0054 ,  H04B7/0413 ,  H04B7/0854

    摘要： To provide a receiving device, a receiving method, and a receiving program, which are capable of reducing performance degradation in a case where the spatial correlation of a channel becomes high.A transmission signal candidate search unit searches for a transmission signal in a direction in which reception performance is degraded, in MIMO signal detection. A transmission signal candidate generation unit generates transmission signal candidates while suppressing degradation due to the spatial correlation of a channel. In a decision unit, using the transmission signal candidates generated in the transmission signal candidate generation unit, a maximum likelihood sequence is obtained. The maximum likelihood sequence is obtained as transmission signal candidates where a metric is calculated and the metric becomes a minimum.

    摘要翻译： 提供一种在信道的空间相关性变高的情况下能够降低性能下降的接收装置，接收方法和接收程序。 在MIMO信号检测中，发送信号候选搜索部在接收性能下降的方向上搜索发送信号。 传输信号候补生成单元在抑制由于信道的空间相关性引起的劣化的同时，生成发送信号候补。 在决定单元中，使用在发送信号候选生成单元中生成的发送信号候选，获得最大似然序列。 获得最大似然序列作为传输信号候选，其中计算度量并且度量变得最小。

    RECEIVING APPARATUS AND RECEIVING METHOD
    7.
    发明申请
    RECEIVING APPARATUS AND RECEIVING METHOD 审中-公开
    接收装置和接收方法

    公开(公告)号：US20120099679A1

    公开(公告)日：2012-04-26

    申请号：US13322169

    申请日：2010-05-25

    申请人： Ryota Yamada ,  Katsuya Kato ,  Takashi Yoshimoto ,  Hiroshi Suzuki ,  Kazuhiko Fukawa ,  Satoshi Suyama

    发明人： Ryota Yamada ,  Katsuya Kato ,  Takashi Yoshimoto ,  Hiroshi Suzuki ,  Kazuhiko Fukawa ,  Satoshi Suyama

    IPC分类号： H04L27/06

    CPC分类号： H04L25/0228 ,  H04B7/0413 ,  H04J11/0063 ,  H04L25/0204

    摘要： A receiving apparatus and reception method reduces degradation due to multipath interference without increasing the amount of computation even in a system that has a large number of subcarriers. A signal detector, using the symbol replica generated by symbol replica generator and the channel estimate which a channel estimator estimated based on the received pilot signal, suppresses interference attributed to delayed waves exceeding the GI and outputs a suppressed signal for the received signal. A demodulator decodes the signal of which interference has been alleviated, to determine code bit LLR as bit likelihood information. A decoder performs an error correction decoding process on the input code bit LLR. If no error exists in the result of error correction decoding, the decoder outputs information bits to complete the reception process. If there is an error in the decoded result, the decoder outputs the code bit LLR to symbol replica generator.

    摘要翻译： 即使在具有大量子载波的系统中，接收装置和接收方法也减少了由于多路径干扰导致的劣化，而不增加计算量。 信号检测器利用由符号复制产生器产生的符号副本和基于接收到的导频信号估计的信道估计器的信道估计，抑制归因于超过GI的延迟波的干扰，并输出接收信号的抑制信号。 解调器解码干扰已被减轻的信号，以便将码位LLR确定为比特似然信息。 解码器对输入码位LLR执行纠错解码处理。 如果在纠错解码结果中没有错误，则解码器输出信息比特以完成接收处理。 如果解码结果存在错误，则解码器将码位LLR输出到码元复制发生器。

    Radio communication apparatus and radio communication method
    8.
    发明授权
    Radio communication apparatus and radio communication method 有权
    无线电通信装置和无线电通信方法

    公开(公告)号：US07778611B2

    公开(公告)日：2010-08-17

    申请号：US11752714

    申请日：2007-05-23

    申请人： Takahiro Asai ,  Hui Shi ,  Hitoshi Yoshino ,  Satoshi Suyama ,  Kazuhiko Fukawa ,  Hiroshi Suzuki

    发明人： Takahiro Asai ,  Hui Shi ,  Hitoshi Yoshino ,  Satoshi Suyama ,  Kazuhiko Fukawa ,  Hiroshi Suzuki

    IPC分类号： H04B1/50 ,  H04B1/10

    CPC分类号： H04B1/525 ,  H04B7/155

    摘要： A radio communication apparatus for performing transmission and reception of radio communications simultaneously by using different carrier frequencies for transmission and reception, comprising: a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal; and a power suppressor for coupling loop interference signal for attenuating the signal power in order to suppress the coupling loop interference signal power that is contained in the signal.

    摘要翻译： 一种无线电通信装置，用于通过使用不同的载波频率同时进行无线电通信的发送和接收，用于发送和接收，包括：收发器，具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字的耦合环路干扰信号去除功能 域，用于去除包含在信号中的耦合环路干扰信号; 以及用于耦合环路干扰信号的功率抑制器，用于衰减信号功率，以便抑制信号中包含的耦合环路干扰信号功率。

    WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD
    9.
    发明申请
    WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD 失效
    无线通信设备和无线通信方法

    公开(公告)号：US20090207931A1

    公开(公告)日：2009-08-20

    申请号：US12368540

    申请日：2009-02-10

    申请人： Yusuke OHWATARI ,  Takahiro Asai ,  Satoshi Suyama ,  Hiroshi Suzuki ,  Kazuhiko Fukawa

    发明人： Yusuke OHWATARI ,  Takahiro Asai ,  Satoshi Suyama ,  Hiroshi Suzuki ,  Kazuhiko Fukawa

    IPC分类号： H04B7/02

    CPC分类号： H04L25/03343 ,  H04L27/2621 ,  H04L2025/03414 ,  H04L2025/03426

    摘要： A wireless communication device that transmits a wireless signal by carrying out linear precoding processing using a plurality of transmission antennas is provided with: a phase pattern control unit for selecting a phase pattern that reduces peak-to-average power ratio; a phase rotation unit for carrying out phase rotation on a modulation signal using the phase pattern selected in the phase pattern control unit; a control signal generation unit for generating a control signal based on the phase pattern selected in the phase pattern control unit; and a preceding unit for carrying out linear precoding processing on output signals from the phase rotation unit and output signals from the control signal generation unit.

    摘要翻译： 通过使用多个发送天线进行线性预编码处理来发送无线信号的无线通信装置具有：相位图案控制部，其选择降低峰值与平均功率比的相位图案; 相位旋转单元，用于使用在相位图案控制单元中选择的相位图案对调制信号进行相位旋转; 控制信号生成单元，用于基于在相位图案控制单元中选择的相位图形生成控制信号; 以及用于对来自相位旋转单元的输出信号和来自控制信号生成单元的输出信号进行线性预编码处理的前一单元。