公开(公告)号：US5455967A

公开(公告)日：1995-10-03

申请号：US205586

申请日：1994-03-03

申请人： Yasuharu Amezawa ,  Shinichi Sato ,  Kohji Takeo

发明人： Yasuharu Amezawa ,  Shinichi Sato ,  Kohji Takeo

IPC分类号： H04B7/26 ,  H04B7/005 ,  H04J13/00 ,  H04W16/06 ,  H04W52/04 ,  H04W52/24 ,  H04B7/00

CPC分类号： H04W16/06 ,  H04W52/24

摘要： A received power preset value is varied in such a manner that SIR measured at the base station comes to coincide with the target value SIRt. By varying the received power preset value, a cell zone of the base station varies so that the number of mobile stations connected with the base station increases or decreases thereby SIR at each base station approximating with each other. As a result, deviation of communication quality is restricted so that efficiency of the system can be improved.

摘要翻译： 接收功率预设值以在基站测量的SIR与目标值SIRt一致的方式变化。 通过改变接收功率预设值，基站的小区区域变化，使得与基站连接的移动站的数量增加或减少，从而每个基站处的SIR彼此近似。 结果，通信质量的偏差受到限制，从而可以提高系统的效率。

公开(公告)号：US08467478B2

公开(公告)日：2013-06-18

申请号：US13075331

申请日：2011-03-30

申请人： Makoto Yoshida ,  Yasuharu Amezawa ,  Kazuyuki Ozaki

发明人： Makoto Yoshida ,  Yasuharu Amezawa ,  Kazuyuki Ozaki

IPC分类号： H03K9/00 ,  H04L27/00 ,  H03D1/06

CPC分类号： H04L25/0226 ,  H04B1/7113 ,  H04B17/364 ,  H04L25/0202 ,  H04L2025/03414

摘要： An apparatus includes a selection unit that selects an estimation target path to be used to estimate a propagation channel estimation value, among a plurality of paths based on a characteristic value of each path; a determination unit that determines an estimated reception time at which a signal as a target of estimation of the propagation channel estimation value among signals propagating through the estimation target path is received; an estimation unit that estimates an amplitude and a phase of the signal propagating through the estimation target path at the estimated reception time as a propagation channel estimation value of the estimation target path; and a processing unit that performs an interpolation/extrapolation process using the propagation channel estimation value of the estimation target path to estimate the propagation channel estimation value at a time other than the estimated reception time of the signal propagating through the estimation target path.

摘要翻译： 一种装置，包括：选择单元，基于各路径的特征值，选择多个路径中用于估计传播路径估计值的估计目标路径; 确定单元，其确定在通过所述估计目标路径传播的信号中接收到作为所述传播路径估计值的估计的目标的信号的估计接收时间; 估计单元，估计在估计接收时间通过估计目标路径传播的信号的幅度和相位作为估计目标路径的传播路径估计值; 以及处理单元，其使用所述估计目标路径的传播路径估计值来执行插值/外插处理，以在除了通过估计目标路径传播的信号的估计接收时间之外的时间估计传播路径估计值。

公开(公告)号：US07167456B2

公开(公告)日：2007-01-23

申请号：US10121776

申请日：2002-04-12

申请人： Takanori Iwamatsu ,  Yasuharu Amezawa

发明人： Takanori Iwamatsu ,  Yasuharu Amezawa

IPC分类号： H04B7/212

CPC分类号： H04L25/0228

摘要： An apparatus for estimating phase/amplitude characteristics of a propagation path. The apparatus removes, from a receive signal on a data channel on which known information is transmitted upon being time-multiplexed between items of unknown information, transmit information on this channel, which provides phase/amplitude information indicative of phase/amplitude characteristics that this data channel has suffered over the propagation path. The apparatus further removes from a receive signal on a data channel on which only unknown information is transmitted, transmit information on this channel, which provides phase/amplitude information indicative of phase/amplitude characteristics that this data channel has suffered over the propagation path. The apparatus includes an adder for adding the two phase/amplitude information and an estimation unit for estimating, from an adder output, a phase characteristic and an amplitude characteristic that each channel has suffered over the propagation path.

摘要翻译： 一种用于估计传播路径的相位/振幅特性的装置。 该设备从在未知信息的项目之间被时分多路传输的已知信息的数据信道上的接收信号中去除在该信道上发送信息，该信息提供表示相位/幅度特性的相位/幅度信息，该数据 频道受到传播路径的影响。 该装置还从仅在其上仅发送未知信息的数据信道上的接收信号中移除该信道，该信道提供指示该数据信道在传播路径上遭受的相位/幅度特性的相位/幅度信息。 该装置包括用于将两个相位/幅度信息相加的加法器和用于从加法器输出估计每个信道在传播路径上遭受的相位特性和幅度特性的估计单元。

公开(公告)号：US07116999B2

公开(公告)日：2006-10-03

申请号：US10115470

申请日：2002-04-03

申请人： Takanori Iwamatsu ,  Masayuki Sutoh ,  Yasuharu Amezawa ,  Shinichi Sato

发明人： Takanori Iwamatsu ,  Masayuki Sutoh ,  Yasuharu Amezawa ,  Shinichi Sato

IPC分类号： H04B7/00

CPC分类号： H04B7/0865

摘要： In a mobile communication receiving apparatus in which signals received on a plurality of receiving paths (branches) are combined by a combiner, correlation between noise signals contained in the signals received on respective ones of the branches is detected by a noise correlation calculating unit, and control is exercised so as to maximize signal-to-noise power ratio of the combined signal based upon the correlation calculated in the noise correlation calculating unit. Signal-to-noise power ratio can be maximized even if noise components contained in respective ones of the branch signals are mutually correlated.

公开(公告)号：US20110176621A1

公开(公告)日：2011-07-21

申请号：US13075331

申请日：2011-03-30

申请人： Makoto Yoshida ,  Yasuharu Amezawa ,  Kazuyuki Ozaki

发明人： Makoto Yoshida ,  Yasuharu Amezawa ,  Kazuyuki Ozaki

IPC分类号： H04L27/00

CPC分类号： H04L25/0226 ,  H04B1/7113 ,  H04B17/364 ,  H04L25/0202 ,  H04L2025/03414

摘要： An apparatus includes a selection unit that selects an estimation target path to be used to estimate a propagation channel estimation value, among a plurality of paths based on a characteristic value of each path; a determination unit that determines an estimated reception time at which a signal as a target of estimation of the propagation channel estimation value among signals propagating through the estimation target path is received; an estimation unit that estimates an amplitude and a phase of the signal propagating through the estimation target path at the estimated reception time as a propagation channel estimation value of the estimation target path; and a processing unit that performs an interpolation/extrapolation process using the propagation channel estimation value of the estimation target path to estimate the propagation channel estimation value at a time other than the estimated reception time of the signal propagating through the estimation target path.

摘要翻译： 一种装置，包括：选择单元，基于各路径的特征值，选择多个路径中用于估计传播路径估计值的估计目标路径; 确定单元，其确定在通过所述估计目标路径传播的信号中接收到作为所述传播路径估计值的估计的目标的信号的估计接收时间; 估计单元，估计在估计接收时间通过估计目标路径传播的信号的幅度和相位作为估计目标路径的传播路径估计值; 以及处理单元，其使用所述估计目标路径的传播路径估计值来执行插值/外插处理，以在除了通过估计目标路径传播的信号的估计接收时间之外的时间估计传播路径估计值。

公开(公告)号：US06459884B1

公开(公告)日：2002-10-01

申请号：US09357857

申请日：1999-07-21

申请人： Yasuharu Amezawa

发明人： Yasuharu Amezawa

IPC分类号： H04B7216

CPC分类号： H04B17/391 ,  H04W52/58

摘要： The characteristics of a radio channel is estimated over which pilot signals are transmitted consecutively together with TPC signals in the cdma2000 system. From the pilot signals demodulated into baseband signals, obtained are correlated values of a field of the pilot signals preceding the TPC field and of the TPC signals with the spread spectrum codes. Both of the correlated values are operated to determine data represented by the TPC signals. The data thus determined are removed from the TPC signals to restore the pilot signals which would have appeared unless multiplied with the spread spectrum codes in the TPC bit field. The characteristics of the radio channel are estimated from the pilot signals including the TPC bit field from which the data determined have been removed.

摘要翻译： 估计在cdma2000系统中连续传输导频信号和TPC信号的无线电信道的特性。 从被解调为基带信号的导频信号中，获得的TPC场之前的导频信号的场和具有扩频码的TPC信号的场的相关值。 操作两个相关值以确定由TPC信号表示的数据。 如此确定的数据从TPC信号中去除，以恢复出现的导频信号，除非与TPC位字段中的扩频码相乘。 从包括确定了数据的TPC比特字段的导频信号估计无线电信道的特性。

公开(公告)号：US06438362B1

公开(公告)日：2002-08-20

申请号：US09252683

申请日：1999-02-22

申请人： Yasuharu Amezawa

发明人： Yasuharu Amezawa

IPC分类号： H04B1700

CPC分类号： H04B17/391 ,  H04B7/0837 ,  H04B17/336 ,  H04W52/42

摘要： A method for measuring characteristics of a propagated radio-wave on the basis of a reference signal, wherein the reference signal is obtained by receiving and demodulating the propagated radio-wave, comprising the steps of: estimating characteristics of a propagation-path, through which the radio-wave has been transmitted, on the basis of the reference signal; determining a desired-signal power and an interference-signal power of the propagated radio-wave on the basis of the estimated characteristics: and deriving an SIR by performing calculations on the desired-signal power and the interference-signal power.

摘要翻译： 一种用于基于参考信号测量传播的无线电波的特性的方法，其中通过接收和解调传播的无线电波获得参考信号，包括以下步骤：估计传播路径的特性，通过该传播路径 基于参考信号传送无线电波; 基于估计的特性确定所传播的无线电波的期望信号功率和干扰信号功率;以及通过对期望信号功率和干扰信号功率进行计算来导出SIR。