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1. 发明申请

US20060007904A1 Apparatus and method for fading frequency estimation 有权
公开(公告)号：US20060007904A1
公开(公告)日：2006-01-12
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： H04B7/216
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.

2. 发明授权

US07548595B2 Apparatus and method for fading frequency estimation 有权
标题翻译：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。

3. 发明授权

US08179926B2 Mobile communication system, and base transceiver station apparatus and mobile station apparatus used in mobile communication system 有权
标题翻译：移动通信系统，移动通信系统中使用的基站装置和移动站装置
公开(公告)号：US08179926B2
公开(公告)日：2012-05-15
申请号：US11311564
申请日：2005-12-19
申请人： Tetsuhiro Futami , Morihiko Minowa
发明人： Tetsuhiro Futami , Morihiko Minowa
IPC分类号： H04J3/06 , H04W4/00 , H04L27/06
CPC分类号： H04L25/03343 , H04L25/022 , H04L27/0014
摘要： A phase error detector in a base transceiver station detects a phase error caused by a Doppler shift in a received wave from a mobile station. A phase rotator rotates a phase of a transmission symbol in a base band region so as to cancel the Doppler shift, which occurs in a downlink from a base transceiver station to a mobile station based on the phase error detected by the phase error detector.
摘要翻译：基站中的相位误差检测器检测来自移动台的接收波中的多普勒频移引起的相位误差。相位旋转器使基带区域中的发送符号的相位旋转，以便基于由相位误差检测器检测到的相位误差来消除从基站到移动台的下行链路中发生的多普勒频移。

4. 发明申请

US20070058683A1 Mobile communication system, and base transceiver station apparatus and mobile station apparatus used in mobile communication system 有权
标题翻译：移动通信系统，移动通信系统中使用的基站装置和移动站装置
公开(公告)号：US20070058683A1
公开(公告)日：2007-03-15
申请号：US11311564
申请日：2005-12-19
申请人： Tetsuhiro Futami , Morihiko Minowa
发明人： Tetsuhiro Futami , Morihiko Minowa
IPC分类号： H04Q7/00 , H04J3/06
CPC分类号： H04L25/03343 , H04L25/022 , H04L27/0014
摘要： A phase error detector in a base transceiver station detects a phase error caused by a Doppler shift in a received wave from a mobile station. A phase rotator rotates a phase of a transmission symbol in a base band region so as to cancel the Doppler shift, which occurs in a downlink from a base transceiver station to a mobile station based on the phase error detected by the phase error detector.
摘要翻译：基站中的相位误差检测器检测来自移动台的接收波中的多普勒频移引起的相位误差。相位旋转器使基带区域中的发送符号的相位旋转，以便基于由相位误差检测器检测到的相位误差来消除从基站到移动台的下行链路中发生的多普勒频移。

5. 发明授权

US07366228B2 Synchronization detecting apparatus 有权
标题翻译：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。

6. 发明申请

US20080304446A1 Frequency division communication system 审中-公开
标题翻译：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。

7. 发明授权

US07062287B2 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.

8. 发明授权

US06909902B1 Radio base station equipment and mobile station equipment determining location of mobile station by associating with another radio base station or mobile station in a mobile communication system 失效
标题翻译：无线基站设备和移动台设备通过在移动通信系统中与另一无线基站或移动台相关来确定移动台的位置
公开(公告)号：US06909902B1
公开(公告)日：2005-06-21
申请号：US09583524
申请日：2000-05-31
申请人： Kensuke Sawada , Noriyuki Kawaguchi , Satoshi Nakamura , Tokuro Kubo , Dai Kimura , Morihiko Minowa , Kazuo Nagatani
发明人： Kensuke Sawada , Noriyuki Kawaguchi , Satoshi Nakamura , Tokuro Kubo , Dai Kimura , Morihiko Minowa , Kazuo Nagatani
IPC分类号： G01S5/02 , H04W60/00 , H04W64/00 , H04Q7/20
CPC分类号： H04W64/00
摘要： This invention relates to a radio base station equipment and a mobile station equipment in a mobile communication system that operate as determination stations adapted for a predetermined navigation or associate with other radio base station(s) or mobile station(s) to radio-determine the location of a desired mobile station. The mobile communication system achieves a radio determination economically and reliably while flexibly adapting itself to the substantial traffic distribution and transmission characteristics in individual wireless zones as well as the zone configuration, channel allocation, the procedure of channel control, and the structure of hardware.
摘要翻译：本发明涉及一种移动通信系统中的无线电基站设备和移动台设备，该移动通信系统作为适用于预定导航或与其他无线电基站或移动台关联的确定站进行无线电确定所需移动台的位置。移动通信系统经济可靠地实现无线电确定，同时灵活地适应各个无线区域中的实际业务分布和传输特性，以及区域配置，信道分配，信道控制过程和硬件结构。

9. 发明授权

US07133475B2 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.

10. 发明授权

US07170925B2 CDMA receiver 有权
标题翻译： 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。

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