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58 条记录 (耗时 0.024 秒)

    Synchronization detecting apparatus
    1.
    发明授权
    Synchronization detecting apparatus 有权
    同步检测装置

    公开(公告)号：US07366228B2

    公开(公告)日：2008-04-29

    申请号：US09918964

    申请日：2001-07-31

    申请人： Morihiko Minowa ,  Dai Kimura ,  Noriyuki Kawaguchi

    发明人： Morihiko Minowa ,  Dai Kimura ,  Noriyuki Kawaguchi

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7075 ,  H04B2201/70701 ,  H04L25/0232

    摘要： In a channel estimating circuit, a Sync Word is demodulated by using a channel estimation value not with a symbol or a slot including the Sync Word to be demodulated, but with its preceding and succeeding symbols or slots. Furthermore, in a channel estimation process, if a Synch Word to be demodulated is included in any of groups into which a plurality of symbols are divided, the Sync Word is demodulated by using a channel estimation value obtained with the channel estimation process using not this group but another group.

    摘要翻译： 在信道估计电路中，通过使用不具有符号的信道估计值或包括要解调的同步字，但具有其前和后符号或时隙的信道估计值来解调同步字。 此外，在信道估计处理中，如果要解调的同步字被包括在划分多个符号的组中的任一组中，则使用不是使用信道估计处理获得的信道估计值来解调同步字 小组，但另一组。

    CDMA receiver
    2.
    发明授权
    CDMA receiver 有权
    CDMA接收机

    公开(公告)号：US07170925B2

    公开(公告)日：2007-01-30

    申请号：US10074939

    申请日：2002-02-13

    申请人： Noriyuki Kawaguchi ,  Satoshi Nakamura ,  Kensuke Sawada ,  Dai Kimura ,  Tokuro Kubo ,  Morihiko Minowa

    发明人： Noriyuki Kawaguchi ,  Satoshi Nakamura ,  Kensuke Sawada ,  Dai Kimura ,  Tokuro Kubo ,  Morihiko Minowa

    IPC分类号： H04B1/707

    CPC分类号： H04B1/712 ,  H04B1/7115 ,  H04B2201/7071

    摘要： In a CDMA receiver for applying despread processing to direct wave or delayed waves that arrive via each path of multiple paths, applying synchronous detection processing to the despread signals obtained, combining the detection signals of respective paths and discriminating the received data on the basis of the combined signal, (1) a weighting unit provided for every path measures power of delayed received waves that arrive via its own path and, if the reception power is less than a set level (breakpoint level), subjects an output signal to weighting conforming to the reception power; (2) a RAKE combiner combines signals output from the weighting units of the respective paths; and (3) a data discrimination unit discriminates receive data based upon the output signal of the combiner.

    摘要翻译： 在用于对通过多个路径的每条路径到达的直达波或延迟波的解扩处理的CDMA接收机中，对获得的去扩展信号应用同步检测处理，组合各个路径的检测信号，并基于 组合信号，（1）为每个路径提供的加权单元测量通过其自身路径到达的延迟接收波的功率，并且如果接收功率小于设定电平（断点电平），则对输出信号进行加权以符合 接待能力; （2）RAKE组合器组合从相应路径的加权单元输出的信号; 和（3）数据鉴别单元基于组合器的输出信号来鉴别接收数据。

    Radio receiver
    3.
    发明授权
    Radio receiver 失效

    公开(公告)号：US07133475B2

    公开(公告)日：2006-11-07

    申请号：US10113736

    申请日：2002-04-01

    申请人： Noriyuki Kawaguchi ,  Morihiko Minowa ,  Dai Kimura

    发明人： Noriyuki Kawaguchi ,  Morihiko Minowa ,  Dai Kimura

    IPC分类号： H03K9/00 ,  H04B1/707

    CPC分类号： H04L7/042

    摘要： The invention relates to a radio receiver which receives reception waves modulated with a frame being a sequence of slots and reproduces transmission information that is distributed to the slots. An object of the invention is to increase the reliability of channel inference and improve the transmission quality without substantially altering a basic configuration. A radio receiver of the invention performs quasi-synchronous detection on reception waves modulated with a frame; determines an error in a sequence of first vectors and a sequence of second vectors as an average of deviations of particular symbol positions to be indicated by the sequence of first vectors indicating a sequence of words included in each slot in a signal space, and the sequence of second vectors indicating known information included in the slots; and compensates for the error in the signal space.

    Transmission power control apparatus
    4.
    发明授权
    Transmission power control apparatus 失效

    公开(公告)号：US07062287B2

    公开(公告)日：2006-06-13

    申请号：US10072058

    申请日：2002-02-08

    申请人： Satoshi Nakamura ,  Morihiko Minowa ,  Noriyuki Kawaguchi ,  Kensuke Sawada ,  Tokuro Kubo ,  Dai Kimura

    发明人： Satoshi Nakamura ,  Morihiko Minowa ,  Noriyuki Kawaguchi ,  Kensuke Sawada ,  Tokuro Kubo ,  Dai Kimura

    IPC分类号： H04B7/00 ,  H04Q7/20

    CPC分类号： H04W52/12 ,  H04W52/20 ,  H04W52/24 ,  H04W52/283

    摘要： In a transmission power control apparatus for measuring SIR, which is a ratio of a receive signal to an interference signal, and controlling transmission power of a mobile station in such a manner that the measured SIR will agree with a target SIR, a fading detector detects the rate of change in fading, a correction unit corrects the target SIR based upon the rate of change in fading, and a transmission power control command creation unit creates a command for controlling transmission power of the mobile station in such a manner that the measured SIR will agree with the corrected target SIR, and transmits this command. Further, a searcher detects multipath and the levels of signals that arrive via respective ones of the paths, a level-difference calculation unit calculates level differences between the paths, a correction unit corrects the target SIR based upon the level differences between the paths, and a transmission power control command creation unit creates a command for controlling transmission power of the mobile station in such a manner that the measured SIR will agree with the corrected target SIR, and transmits this command.

    Apparatus and method for fading frequency estimation
    7.
    发明授权
    Apparatus and method for fading frequency estimation 有权
    用于衰落频率估计的装置和方法

    公开(公告)号：US07548595B2

    公开(公告)日：2009-06-16

    申请号：US10988411

    申请日：2004-11-12

    申请人： Tsuyoshi Shimomura ,  Dai Kimura ,  Tetsuhiro Futami ,  Morihiko Minowa

    发明人： Tsuyoshi Shimomura ,  Dai Kimura ,  Tetsuhiro Futami ,  Morihiko Minowa

    IPC分类号： H03K9/00

    CPC分类号： H04L25/0202 ,  H04B2201/70701 ,  H04L25/0222

    摘要： The invention relates to an apparatus and a method for estimating a fading frequency of incoming received waves in a receiving station of a radio communication system or radio transmission system. An object of the invention is to estimate a fading frequency efficiently and accurately without substantially complexing the configuration of the system. To this end, the invention provides an apparatus for estimating a fading frequency from a pilot signal in a reception signal, which includes a calculation unit for calculating a magnitude of a complex product of two symbols that are received at different instants, and an estimation unit for estimating a fading frequency according to the calculated magnitude of the complex product.

    摘要翻译： 本发明涉及一种用于估计无线电通信系统或无线电传输系统的接收站中的输入接收波的衰落频率的装置和方法。 本发明的目的是有效且准确地估计衰落频率，而不会使系统的配置基本上复杂化。 为此，本发明提供了一种用于从接收信号中的导频信号估计衰落频率的装置，其包括：用于计算在不同时刻接收的两个符号的复乘的幅度的计算单元和估计单元 用于根据所计算的复数乘积的大小来估计衰落频率。

    Frequency division communication system
    8.
    发明申请
    Frequency division communication system 审中-公开
    分频通信系统

    公开(公告)号：US20080304446A1

    公开(公告)日：2008-12-11

    申请号：US11826297

    申请日：2007-07-13

    申请人： Dai Kimura ,  Takashi Dateki ,  Toshiro Sawamoto ,  Morihiko Minowa

    发明人： Dai Kimura ,  Takashi Dateki ,  Toshiro Sawamoto ,  Morihiko Minowa

    IPC分类号： H04Q7/00

    CPC分类号： H04L5/0046 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/143

    摘要： An orthogonal frequency division communication system which enables flexible modification of the ratio of allocation between uplink and downlink transmissions, while maintaining advantages similar to those of TDD (Time Division Duplex) systems, has a base station and a plurality of mobile stations connected by uplinks and downlinks, and a plurality of mutually orthogonal frequencies are allocated, on the frequency axis and on the time axis, to the uplinks and downlinks and to the plurality of mobile stations.

    摘要翻译： 能够灵活地修改上行链路和下行链路传输之间的分配比例的正交频分通信系统，同时保持与TDD（时分双工）系统相似的优点，具有通过上行链路连接的基站和多个移动台， 下行链路和多个相互正交的频率在频率轴和时间轴上分配给上行链路和下行链路以及多个移动台。

    Radio communication system, server, and radio communication method
    9.
    发明授权
    Radio communication system, server, and radio communication method 有权
    无线电通信系统，服务器和无线电通信方法

    公开(公告)号：US08804594B2

    公开(公告)日：2014-08-12

    申请号：US13331147

    申请日：2011-12-20

    申请人： Yuya Harada ,  Dai Kimura

    发明人： Yuya Harada ,  Dai Kimura

    IPC分类号： H04H20/71 ,  H04M3/42

    CPC分类号： H04W4/06

    摘要： A radio communication system includes a first server and a second server. The first server includes a first processor to receive, together with an identifier for identifying a base station, communication information transmitted from a plurality of mobile stations via the base station, extract, for the base station, a keyword frequently used in communications between the first server and the plurality of mobile stations on the basis of the received communication information and the received identifier, and transmit the extracted keyword together with the identifier. The second server includes a second processor to receive, together with the identifier, the keyword transmitted from the first server, and distribute distribution information corresponding to the received keyword to the plurality of mobile stations via the base station.

    摘要翻译： 无线电通信系统包括第一服务器和第二服务器。 第一服务器包括第一处理器，用于与用于识别基站的标识符一起接收经由基站从多个移动台发送的通信信息，为基站提取经常用于第一 服务器和多个移动台，并根据接收到的通信信息和接收到的标识符，并将所提取的关键字与标识符一起发送。 所述第二服务器包括第二处理器，用于与所述标识符一起接收从所述第一服务器发送的关键字，并且经由所述基站将与所接收的关键字相对应的分发信息分发给所述多个移动站。

    Wireless communication system and wireless communication method
    10.
    发明授权
    Wireless communication system and wireless communication method 有权
    无线通信系统和无线通信方式

    公开(公告)号：US08175044B2

    公开(公告)日：2012-05-08

    申请号：US12010848

    申请日：2008-01-30

    申请人： Hiroyuki Seki ,  Dai Kimura ,  Tsuyoshi Shimomura ,  Hiroyuki Ishii ,  Yoshihisa Kishiyama ,  Kenichi Higuchi ,  Sadayuki Abeta

    发明人： Hiroyuki Seki ,  Dai Kimura ,  Tsuyoshi Shimomura ,  Hiroyuki Ishii ,  Yoshihisa Kishiyama ,  Kenichi Higuchi ,  Sadayuki Abeta

    IPC分类号： H04L12/28 ,  H04B15/00

    CPC分类号： H04W72/1226 ,  H04W72/0453

    摘要： The present invention is a wireless communication system having a mobile station and a wireless base station, wherein the wireless base station further having a scheduling processing unit which divides system bandwidth into a plurality of wireless resource blocks in a frequency domain, performs scheduling so that other channels are not assigned to the wireless resource blocks which are adjacent to a first channel when the first channel whose frequency characteristic is not orthogonal to the other channels is assigned to a certain wireless resource block resulting from the division, and creates scheduling information on the scheduling that is performed; and a transmission unit which transmits the scheduling information created by the scheduling processing unit to the mobile station, and the mobile station transmits a channel signal to the wireless base station on the basis of the scheduling information and the wireless base station receives the channel signal transmitted from the mobile station.

    摘要翻译： 本发明是一种具有移动台和无线基站的无线通信系统，其中无线基站还具有将系统带宽分割为频域的多个无线资源块的调度处理单元，进行调度，使其他 当频率特性与其他信道不正交的第一信道被分配给由该划分产生的某个无线资源块时，不将信道分配给与第一信道相邻的无线资源块，并且创建关于调度的调度信息 被执行 以及传输单元，其将由调度处理单元创建的调度信息发送到移动站，并且移动站基于调度信息向无线基站发送信道信号，并且无线基站接收发送的信道信号 从移动台。