公开(公告)号：US06522639B1

公开(公告)日：2003-02-18

申请号：US09396375

申请日：1999-09-15

Applicant: Takashi Kitade ,  Kazuyuki Miya ,  Katsuhiko Hiramatsu

Inventor： Takashi Kitade ,  Kazuyuki Miya ,  Katsuhiko Hiramatsu

IPC: H04J1300

CPC classification number: H04W52/42 ,  H04B1/707 ,  H04B7/04 ,  H04B7/0615 ,  H04B7/0842

Abstract: Spreading sections of the base station spread the respective distributed data using mutually orthogonal spreading codes and are transmitted from antennas. Despreading sections of the mobile station despread the received signals using the same spreading codes as those used at the base station. Demodulation sections demodulate the despread signals. Received signal power measuring sections measure their received signal powers from the demodulation result. A received signal power combination section combines the measured received signal powers and a transmit power control section controls transmission power based on the combined received signal power. When carrying out diversity reception through a plurality of antennas at the base station, transmit power control errors are suppressed to a small level at the mobile station.

Abstract translation: 基站的扩频部使用相互正交的扩频码扩展各自的分布数据，并从天线发送。 移动站的解扩部分使用与在基站使用的扩展码相同的扩展码对接收到的信号进行解扩。 解调部分对解扩信号进行解调。 接收信号功率测量部分从解调结果测量其接收到的信号功率。 接收信号功率组合部分组合测量的接收信号功率，并且发射功率控制部分基于组合的接收信号功率来控制发射功率。 当在基站中通过多个天线进行分集接收时，在移动台处发送功率控制误差被抑制到较小的水平。

公开(公告)号：US06507574B1

公开(公告)日：2003-01-14

申请号：US09645522

申请日：2000-08-25

Applicant: Takashi Kitade ,  Kazuyuki Miya ,  Katsuhiko Hiramatsu

Inventor： Takashi Kitade ,  Kazuyuki Miya ,  Katsuhiko Hiramatsu

IPC: H04J1302

CPC classification number: H04W52/42 ,  H04B1/707 ,  H04B7/04 ,  H04B7/0615 ,  H04B7/0842

Abstract: Spreading sections 104 and 105 of the base station spread the respective distributed data using mutually orthogonal spreading codes and they are transmitted from antennas 106 and 107. Despreading sections 202 and 203 of the mobile station despread the received signals using the same spreading codes as those used at the base station, demodulation sections 204 and 205 demodulate the despread signals, received signal power measuring sections 207 and 208 measure their received signal powers from the demodulation result, received signal power measuring section 209 combines the measured received signal powers and transmit power control section 212 controls transmission power based on the combined received signal power. When carrying out diversity reception through a plurality of antennas at the base station, this suppresses transmit power control errors to a small level at the mobile station.

Abstract translation: 基站的扩频部104,105使用相互正交的扩频码扩展各自的分布数据，并从天线106,107发送。移动台的解扩部202,203使用与所使用的相同的扩频码对接收信号进行解扩 在基站，解调部204,205对解扩信号进行解调，接收信号功率测定部207,208从解调结果测定其接收信号功率，接收信号功率测定部209将测定出的接收信号功率与发送功率控制部 212基于组合的接收信号功率控制发射功率。 当在基站中通过多个天线进行分集接收时，这在移动台处抑制发射功率控制误差到一个小的水平。

公开(公告)号：US06463261B1

公开(公告)日：2002-10-08

申请号：US09319940

申请日：1999-07-30

Applicant: Katsuhiko Hiramatsu ,  Kenichi Miyoshi

Inventor： Katsuhiko Hiramatsu ,  Kenichi Miyoshi

IPC: H04B1500

CPC classification number: H04W56/001 ,  H04B7/2681 ,  H04W56/003 ,  H04W92/10

Abstract: The radio communication apparatus of the present invention changes the transmission timing of a mobile station of the self station with respect to the transmission timing of a mobile station of a peripheral transmission station. This makes it possible to extract a received signal from the self station even if the mobile station of the self station and the mobile station of the peripheral transmission station use identical unique words.

Abstract translation: 本发明的无线通信装置相对于外围发送站的移动台的发送定时改变自身站的移动台的发送定时。 这使得即使本台的移动台和外围发送站的移动台使用相同的唯一字，也可以从本台提取接收的信号。

公开(公告)号：US06400929B1

公开(公告)日：2002-06-04

申请号：US09424843

申请日：1999-12-06

Applicant: Toyoki Ue ,  Katsuhiko Hiramatsu ,  Osamu Kato

Inventor： Toyoki Ue ,  Katsuhiko Hiramatsu ,  Osamu Kato

IPC: H04B100

CPC classification number: H04W72/085 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04W16/14 ,  H04W24/00 ,  H04W28/22 ,  H04W52/24 ,  H04W52/265 ,  H04W52/267 ,  H04W72/0406 ,  H04W72/0413

Abstract: The communication terminal apparatus measures reception quality and reports the measurement result to the base station apparatus, and the base station apparatus switches the transmission rate based on the reported result of the reception quality. In this way, the transmission rate is switched starting at the point in time at which the reception quality of the communication terminal apparatus deteriorates. Furthermore, the transmission rate is switched so that the amount of interference with others is within the allowable range according to the channel condition between the communication terminal apparatus and base station apparatus.

公开(公告)号：US06236672B1

公开(公告)日：2001-05-22

申请号：US09487207

申请日：2000-01-19

Applicant: Katsuhiko Hiramatsu

Inventor： Katsuhiko Hiramatsu

IPC: H04J1304

CPC classification number: H04J13/16 ,  H04J13/0077 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/18 ,  H04L1/206 ,  H04L2001/0096

Abstract: Transmitting/receiving apparatuses are installed in a base station and a mobile station, respectively, to perform mutual transmission and reception by using a plurality of spreading codes. The transmitting/receiving apparatus installed in the base station has a block for designating to the mobile station the kind and the number of spreading codes used in a reverse link from the mobile station to the base station through a forward link at the time that communication with the mobile station is started. The transmitting/receiving apparatus installed in the mobile station has a block for transmitting a signal to the base station by using spreading codes of the designated kind and number. The transmitting/receiving apparatus installed in the base station further has a block for detecting receiving quality values of the signal transmitted from the mobile station with respect to individual spreading codes used in the mobile station, a block for deciding whether or not the detected receiving quality values exceed a prescribed quality value, and a block for finally setting the kind and number of spreading codes to be used in the reverse link on the basis of the spreading codes for which the detected receiving quality values are determined to exceed the prescribed quality value.

公开(公告)号：US06208701B1

公开(公告)日：2001-03-27

申请号：US08867806

申请日：1997-06-03

Applicant: Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

Inventor： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Hiroaki Sudo

IPC: H04L700

CPC classification number: H04L7/0054 ,  H04L7/0334 ,  H04L7/0337 ,  H04L7/041

Abstract: The synchronizing apparatus includes a block for detecting a code from an input signal, a block for detecting from the code the variable points of the code at several times as high as the symbol rate, a block for calculating a histogram of the detected variables of the code to time, and a block for deciding that the phase number at which the calculated histogram takes the maximum value is a symbol synchronization point. This synchronizing apparatus detects the zero-cross points of an intermediate frequency band signal at N times as high as the symbol rate. It also calculates a histogram of detected time (0 to N−1). The time (0 to N−1) at which the histogram is the maximum within a predetermined detected time is selected as a symbol clock, and thereby symbol synchronization is established.

Abstract translation: 同步装置包括用于从输入信号中检测代码的块，用于从代码中检测代码的可变点数为符号速率的几倍的块，用于计算检测到的变量的直方图的块 代码到时间，以及用于确定计算的直方图获取最大值的相位数的块是符号同步点。 该同步装置检测中间频带信号的零交叉点的N倍于符号率。 它还计算检测时间的直方图（0到N-1）。 选择在预定检测时间内直方图为最大值的时间（0到N-1）作为符号时钟，从而建立符号同步。

公开(公告)号：US6111921A

公开(公告)日：2000-08-29

申请号：US28853

申请日：1998-02-24

Applicant: Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

Inventor： Hiroaki Sudo ,  Katsuhiko Hiramatsu ,  Mitsuru Uesugi

IPC: H04L1/00 ,  H04B1/10 ,  H04J11/00 ,  H04L1/20 ,  H04L27/20

CPC classification number: H04L1/206

Abstract: An estimator of error rate is provided for reducing variations of an error pulse count value at burst signals of a received signal for digital mobile communications and thereby improving an accuracy of estimating an error rate. The estimator of error rate includes detectors for detecting that phase information derived from a baseband signal of an I channel (I signal) and a baseband signal of a Q channel (Q signal) is located in an error pulse generation area, detectors for detecting that envelope information of the I signal and the Q signal is located in the error pulse generation area, and a counter for detecting that the phase error signal and the envelope error signal are outputted and counting the signals. The estimator operates to estimate an error rate based on an error pulse count value at one period. The estimator operates to detect that the phase information and the envelope information are located in the error pulse generation area. This serves to suppress the probability of counting correct signals and reducing variations of a count value at the burst signals, thereby improving an accuracy of estimating an error rate.

Abstract translation: 提供误差率的估计器，用于减少用于数字移动通信的接收信号的脉冲串信号的误差脉冲计数值的变化，从而提高误差率的估计精度。 误差率的估计器包括用于检测从I信道（I信号）的基带信号和Q信道（Q信号）的基带信号导出的相位信息位于误差脉冲产生区域中的检测器，用于检测 I信号和Q信号的包络信息位于误差脉冲产生区域中，并且用于检测相位误差信号和包络误差信号的计数器，并对该信号进行计数。 估计器用于基于一个周期的错误脉冲计数值来估计错误率。 估计器操作以检测相位信息和包络信息位于错误脉冲产生区域中。 这用于抑制对正确信号进行计数并减少脉冲串信号处的计数值的变化的概率，从而提高误差率的估计精度。

公开(公告)号：US5966095A

公开(公告)日：1999-10-12

申请号：US86555

申请日：1998-05-29

Applicant: Katsuhiko Hiramatsu ,  Hideyuki Takahashi

Inventor： Katsuhiko Hiramatsu ,  Hideyuki Takahashi

IPC: H01Q3/26 ,  H04B1/10 ,  H04B7/08 ,  H04B7/26 ,  G01S13/16

CPC classification number: H01Q3/2605 ,  H04B7/0842

Abstract: A complex multiplying section multiplies a receiving signal by a complex weighting factor of a weighting factor controlling section. The output is added by an adding circuit, and decoded by a decoding circuit so as to obtain a received signal. The weighting factor of the weighting factor controlling section is set using only the weighting factor calculated by a synchronous burst having a different unique word pattern. On one hand, it is assumed that an interference station having the same unique word pattern exists. Then, a decision feedback adaptive array antenna receiving circuit 400, which does not update the weighting factor using the unique word pattern, performs a signal reception. On the other hand, it is assumed that no interference station having the same unique word pattern exists. Then, the conventional decision feedback adaptive array antenna receiving circuit 500, which updates the weighting factor using the unique word pattern, performs a signal reception. Thereafter, a correct signal is selected from either one of the circuits. Thereby, the complex weighting factor of the adaptive array antenna is appropriately updated, so that a received signal can be extracted from the desired signal.

Abstract translation: 复乘单元将接收信号乘以加权因子控制部分的复加权因子。 输出由加法电路相加，由解码电路进行解码，得到接收信号。 加权因子控制部分的权重因子仅使用由具有不同唯一字模式的同步脉冲串计算的加权因子来设定。 一方面，假设存在具有相同唯一字模式的干扰站。 然后，不使用唯一字模式更新加权因子的判定反馈自适应阵列天线接收电路400执行信号接收。 另一方面，假设不存在具有相同唯一字模式的干扰站。 然后，传统的判决反馈自适应阵列天线接收电路500使用唯一字模式更新加权因子，执行信号接收。 此后，从任何一个电路中选择正确的信号。 因此，自适应阵列天线的复加权因子被适当地更新，从而可以从期望的信号中提取接收的信号。

公开(公告)号：US5933112A

公开(公告)日：1999-08-03

申请号：US82461

申请日：1998-05-21

Applicant: Katsuhiko Hiramatsu ,  Kazuyuki Miya

Inventor： Katsuhiko Hiramatsu ,  Kazuyuki Miya

IPC: H01Q3/26 ,  H01Q3/22 ,  H01Q3/24

CPC classification number: H01Q3/2605 ,  H01Q3/26

Abstract: First and second phase control amount tables output to first and second vector multiply circuits phase control signals Sc1 and Sc2 representative of corresponding phase shift amounts with gains represented by input gain control signals Sg1 and Sg2 as arguments. The first and second vector multiply circuits shift the phases of in-phase components S13 and S23 and quadrature components S14 and S24 of an antenna 2 in opposite directions in accordance with the phase control signals Sc1 and Sc2. Consequently, the amount of phase shift caused by receiving amplifiers is corrected so that the phase difference at antenna terminals between the input signals to the antennas is maintained.

Abstract translation: 输出到第一和第二矢量的第一和第二相位控制量表将乘以由输入增益控制信号Sg1和Sg2表示的增益表示为对应相移量的相位控制信号Sc1和Sc2作为参数。 第一和第二矢量乘法电路根据相位控制信号Sc1和Sc2将天线2的同相分量S13和S23的相位和正交分量S14和S24相反地移位。 因此，由接收放大器引起的相移量被校正，使得天线端子与天线的输入信号之间的相位差得以维持。

公开(公告)号：US5802121A

公开(公告)日：1998-09-01

申请号：US749209

申请日：1996-11-14

Applicant: Katsuhiko Hiramatsu

Inventor： Katsuhiko Hiramatsu

IPC: H03L7/095 ,  H04L7/027 ,  H04L7/04 ,  H04L27/22 ,  H04L7/00

CPC classification number: H04L7/042

Abstract: A synchronization device includes a first section for generating a predetermined signal. A second section is operative for detecting a correlation between a received signal and the predetermined signal generated by the first section for every sample interval. A third section is operative for selecting a correlation from among correlations detected by the second section for sample intervals of equal time positions in successive symbol intervals respectively. The correlation selected by the third section has a given order number regarding an order in which the correlations are arranged according to magnitude.

Abstract translation: 同步装置包括用于产生预定信号的第一部分。 第二部分用于检测接收信号与由第一部分针对每个采样间隔产生的预定信号之间的相关性。 第三部分用于从连续符号间隔中的相同时间位置的采样间隔中分别从第二部分检测的相关中选择相关性。 由第三部分选择的相关性具有关于根据大小排列相关性的顺序的给定顺序号。