专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06650692B2 CDMA receiver 失效
公开(公告)号：US06650692B2
公开(公告)日：2003-11-18
申请号：US09943437
申请日：2001-08-29
申请人： Takeshi Inoue , Masahiko Shimizu , Takashi Dateki , Koji Matsuyama
发明人： Takeshi Inoue , Masahiko Shimizu , Takashi Dateki , Koji Matsuyama
IPC分类号： H04K100
CPC分类号： H04B1/7117 , H04B1/7093 , H04B1/712
摘要： A path search unit (1) detects the correlation between a received signal and a desired signal; (2) based on the correlation value, selects a plurality of paths over which the desired signal arrives; (3) if the difference between the detection time of the desired signal arriving via a path selected this time and the previous-time detection signal is within an allowable range, judges that the path selected this time is identical to a path previously allocated to prescribed finger units, and (4) if a path is identical, causes despreading and delay adjustment processing of the desired signal arriving over the selected path to be executed by the same finger unit as previously. A timing control unit calculates the difference between the detection time this time, over the identical path, and a reference time, and, based on the total of the time differences over the identical path, controls the timing lead/lag.

2. 发明授权

US08144753B2 Detection device of a spreading code and a timing, and a method thereof 有权
标题翻译：扩展码和定时的检测装置及其方法
公开(公告)号：US08144753B2
公开(公告)日：2012-03-27
申请号：US12646060
申请日：2009-12-23
申请人： Koji Matsuyama , Masahiko Shimizu , Takeshi Inoue
发明人： Koji Matsuyama , Masahiko Shimizu , Takeshi Inoue
IPC分类号： H04B1/707
CPC分类号： H04B1/7095 , H04B1/7075 , H04B1/7093
摘要： An A/D converted and inputted signal is stored in a memory. A sliding correlator sequentially reads the signal stored in the memory and despreads this signal. A despreading timing is adjusted and then the candidate for a despreading code is outputted from a code generation circuit. The despreading code outputted at a predetermined timing is used for obtaining a correlation value of signals outputted from the memory, using the sliding correlator. Thus, by storing signals in the memory, fluctuation of a correlation value caused by fading does not occur while specifying a code or detecting a despreading timing.
摘要翻译： A / D转换和输入信号被存储在存储器中。滑动相关器依次读取存储在存储器中的信号并对该信号进行解扩。调制解扩定时，然后从代码生成电路输出解扩码的候选。使用在预定定时输出的解扩码用于使用滑动相关器获得从存储器输出的信号的相关值。因此，通过将信号存储在存储器中，在指定代码或检测解扩定时时不会发生由衰落引起的相关值的波动。

3. 发明申请

US20100098137A1 DETECTION DEVICE OF A SPREADING CODE AND A TIMING, AND A METHOD THEREOF 有权
标题翻译：扩展代码和时序的检测装置及其方法
公开(公告)号：US20100098137A1
公开(公告)日：2010-04-22
申请号：US12646060
申请日：2009-12-23
申请人： Koji Matsuyama , Masahiko Shimizu , Takeshi Inoue
发明人： Koji Matsuyama , Masahiko Shimizu , Takeshi Inoue
IPC分类号： H04B1/707
CPC分类号： H04B1/7095 , H04B1/7075 , H04B1/7093
摘要： An A/D converted and inputted signal is stored in a memory. A sliding correlator sequentially reads the signal stored in the memory and despreads this signal. A despreading timing is adjusted and then the candidate for a despreading code is outputted from a code generation circuit. The despreading code outputted at a predetermined timing is used for obtaining a correlation value of signals outputted from the memory, using the sliding correlator. Thus, by storing signals in the memory, fluctuation of a correlation value caused by fading does not occur while specifying a code or detecting a despreading timing.
摘要翻译： A / D转换和输入信号被存储在存储器中。滑动相关器依次读取存储在存储器中的信号并对该信号进行解扩。调制解扩定时，然后从代码生成电路输出解扩码的候选。使用在预定定时输出的解扩码用于使用滑动相关器获得从存储器输出的信号的相关值。因此，通过将信号存储在存储器中，在指定代码或检测解扩定时时不会发生由衰落引起的相关值的波动。

4. 发明授权

US6088583A Automatic gain control circuit 失效
标题翻译：自动增益控制电路
公开(公告)号：US6088583A
公开(公告)日：2000-07-11
申请号：US120076
申请日：1998-07-21
申请人： Masahiko Shimizu , Hideto Furukawa , Tomonori Sato , Koji Matsuyama , Masaaki Fujii
发明人： Masahiko Shimizu , Hideto Furukawa , Tomonori Sato , Koji Matsuyama , Masaaki Fujii
IPC分类号： H03G3/30 , H04B7/08 , H04J13/00 , H04B1/06
CPC分类号： H03G3/3052 , H03G3/3068
摘要： In an automatic gain control (AGC) circuit for controlling a preceding gain control unit and a following gain control unit, the AGC circuit according to the present invention includes at least a comparison unit, a first gain control signal output unit and a second gain control signal output unit. The comparison unit compares a signal level from the following gain control unit with a reference value. The first gain control signal output unit outputs a first gain control signal to the following gain control unit in response to an output signal obtained as a result of comparison in the comparison unit. The second gain control signal output unit outputs a second gain control signal to the preceding gain control unit. Further, the second gain control signal has a time constant longer than that of the first gain control signal output unit, in response to the output signal obtained as the result of comparison in the comparison unit.
摘要翻译：在用于控制前一增益控制单元和后续增益控制单元的自动增益控制（AGC）电路中，根据本发明的AGC电路至少包括比较单元，第一增益控制信号输出单元和第二增益控制信号输出单元。比较单元将来自以下增益控制单元的信号电平与参考值进行比较。第一增益控制信号输出单元响应于在比较单元中作为比较结果而获得的输出信号，向第二增益控制单元输出第一增益控制信号。第二增益控制信号输出单元向前一增益控制单元输出第二增益控制信号。此外，响应于作为比较结果的比较结果获得的输出信号，第二增益控制信号具有比第一增益控制信号输出单元的时间常数更长的时间常数。

5. 发明授权

US07994979B2 Antenna positioning method and antenna mounting device for communication device, and antenna device 有权
标题翻译：天线定位方法及天线安装装置通讯装置及天线装置
公开(公告)号：US07994979B2
公开(公告)日：2011-08-09
申请号：US12552184
申请日：2009-09-01
申请人： Masahiko Shimizu , Koji Matsuyama
发明人： Masahiko Shimizu , Koji Matsuyama
IPC分类号： H01Q3/00
CPC分类号： H01Q21/08 , H01Q1/24 , H04B7/086
摘要： In an antenna positioning method for a communication device that performs communication using a plurality of antennas positioned on a straight line, the method has a first step of measuring radiation pattern characteristics of each antenna, a second step of detecting a direction in which fluctuation of the radiation pattern characteristics of each antenna is large, and a third step of positioning each antenna in the communication device so that the direction in which the characteristic fluctuation is large matches the straight line direction.
摘要翻译：在使用位于直线上的多个天线进行通信的通信装置的天线定位方法中，所述方法具有测量各天线的辐射图特性的第一步骤，检测所述天线的波动方向的第二步骤，每个天线的辐射图形特征大，并且第三步骤，将每个天线定位在通信设备中，使得特征波动大的方向与直线方向一致。

6. 发明授权

US07283510B2 Wireless receiver estimating power of interference 有权
标题翻译：无线接收机估计干扰功率
公开(公告)号：US07283510B2
公开(公告)日：2007-10-16
申请号：US10300510
申请日：2002-11-20
申请人： Akira Ito , Masahiko Shimizu , Koji Matsuyama , Yoji Sugawara , Shunji Miyazaki
发明人： Akira Ito , Masahiko Shimizu , Koji Matsuyama , Yoji Sugawara , Shunji Miyazaki
IPC分类号： H04J3/16
CPC分类号： H04B17/309 , H04B17/336 , H04B17/345 , H04B2201/70701 , H04W52/08 , H04W52/243
摘要： By providing a interference power estimation unit obtaining the power of interference in a common pilot signal with ten symbols in one slot and outputting the power of interference as the estimate of the amount of interference in the data signal's pilot signal and a signal-to-interference power ratio calculation unit calculating a signal-to-interference power ratio (SIR) using an output of the interference power estimation unit, in a spread spectrum communication method, a correct SIR can be estimated even when the number of symbols of an individual pilot signal in the slot of the data channel is small.
摘要翻译：通过提供干扰功率估计单元，在一个时隙中获得具有十个符号的公共导频信号中的干扰功率，并输出干扰功率作为数据信号的导频信号中的干扰量的估计和信号干扰功率比计算单元使用干扰功率估计单元的输出来计算信号干扰功率比（SIR），在扩展频谱通信方法中，即使当个别导频信号的符号数量在数据通道的槽位很小。

7. 发明授权

US07023904B2 Synchronization tracking circuit 失效
公开(公告)号：US07023904B2
公开(公告)日：2006-04-04
申请号：US09804506
申请日：2001-03-12
申请人： Masahiko Shimizu , Koji Matsuyama , Yoji Sugawara
发明人： Masahiko Shimizu , Koji Matsuyama , Yoji Sugawara
IPC分类号： H04B1/69
CPC分类号： H04B1/7085 , H04B1/7073
摘要： Disclosed is a synchronization tracking circuit for synchronizing the phase of a despreading code sequence on a receiving side to the phase of a spreading code sequence on a transmitting side. The synchronization tracking circuit has a DLL circuit for performing synchronization tracking by DLL (Delay Locked Loop) control, and an interference-component estimation unit for estimating an interference component inflicted by another path upon a prescribed path of interest among multiple paths. The DLL circuit, which has an interference elimination unit, executes DLL control based upon a signal from which the interference component from the other path has been eliminated and causes the phase of the despreading code sequence on the receiving side to be synchronized with and track the phase of the spreading code on the transmitting side.

8. 发明授权

US08285235B2 Wireless communication apparatus 有权
标题翻译：无线通信装置
公开(公告)号：US08285235B2
公开(公告)日：2012-10-09
申请号：US12817781
申请日：2010-06-17
申请人： Hiroyuki Egawa , Masahiko Shimizu
发明人： Hiroyuki Egawa , Masahiko Shimizu
IPC分类号： H04B1/18
CPC分类号： H04B1/18 , H04B1/0458
摘要： A wireless communication apparatus includes: an antenna; a communication unit for receiving a radio signal via the antenna; a tuning unit for tuning an impedance of the antenna; an impedance controller for controlling the tuning unit to match the impedance of the antenna with an impedance of the communication unit; and a halting unit for halting controlling the impedance of the antenna in accordance with an intensity of the received radio signal.
摘要翻译：一种无线通信装置，包括：天线; 通信单元，用于经由天线接收无线电信号; 调谐单元，用于调谐天线的阻抗; 阻抗控制器，用于控制所述调谐单元将所述天线的阻抗与所述通信单元的阻抗相匹配; 以及停止单元，用于根据所接收的无线电信号的强度停止控制天线的阻抗。

9. 发明授权

US08238273B2 Communication system, communication method, transmitter, and receiver 失效
标题翻译：通信系统，通信方式，发射机和接收机
公开(公告)号：US08238273B2
公开(公告)日：2012-08-07
申请号：US11826608
申请日：2007-07-17
申请人： Masahiko Shimizu , Akira Ito
发明人： Masahiko Shimizu , Akira Ito
IPC分类号： H04B7/00
CPC分类号： H04L1/0013 , H04B7/0691 , H04L1/0026 , H04L1/0067 , H04L1/06 , H04L1/08
摘要： The present method groups a transmission data stream, taking a combination of data bits to be transmitted from a part or all of the plurality of transmission antennas at the same time as one group; and performs transmission processing, including at least either of bit repetition processing or retransmission processing by the unit of the group (bit combination). As a result, in MIMO communication, etc., it is possible to suppress deterioration of reception characteristic due to vanishing of correlation among bits transmitted at the same time.
摘要翻译：本方法对传输数据流进行分组，同时将一个或多个多个发送天线的一部分或全部发送的数据比特组合成一组; 并进行发送处理，包括以组为单位的比特重复处理或重发处理中的至少一个（比特组合）。结果，在MIMO通信等中，可以抑制由于同时发送的比特之间的相关性的消失而引起的接收特性的恶化。

10. 发明授权

US08189711B2 Transmission controlling method in wireless communications system and receiver for use in the same system 有权
标题翻译：用于同一系统的无线通信系统和接收机中的传输控制方法
公开(公告)号：US08189711B2
公开(公告)日：2012-05-29
申请号：US12213850
申请日：2008-06-25
申请人： Masahiko Shimizu
发明人： Masahiko Shimizu
IPC分类号： H04L27/00
CPC分类号： H04W52/267 , H04L1/004 , H04L1/203
摘要： The present invention relates to a transmission controlling method in a wireless communications system and a receiver for use in the same system. The invention aims at realizing power control (or transmit rate control) more effective than previous techniques by means of utilizing a certain relationship between an error rate and an evaluation amount relating to the estimation amount. Thus, a certain relationship is defined between the evaluation amount relating to a reception condition and an error rate on the receiver, and on the basis of this certain relationship, transmit power of the transmitter is controlled.
摘要翻译：本发明涉及无线通信系统中的传输控制方法和用于同一系统的接收机。本发明旨在通过利用误差率与与估计量相关的评估量之间的一定关系来实现比先前技术更有效的功率控制（或发送速率控制）。因此，在与接收条件相关的评估量与接收机的错误率之间定义一定的关系，并且基于该确定关系，控制发送器的发送功率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式