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1. 发明授权

US6069924A Differential detector with error correcting function 失效
标题翻译：差分检测器，具有纠错功能
公开(公告)号：US6069924A
公开(公告)日：2000-05-30
申请号：US27510
申请日：1998-02-20
申请人： Hiroaki Sudo , Katsuhiko Hiramatsu , Mitsuru Uesugi
发明人： Hiroaki Sudo , Katsuhiko Hiramatsu , Mitsuru Uesugi
IPC分类号： H04L27/22 , H04L1/00 , H04L27/227 , H04L27/233
CPC分类号： H04L1/0047 , H04L27/2332
摘要： A differential detector imparted with error correcting function for detecting a differentially phase shifted signal while performing error correction includes a one-symbol differential detector for performing phase comparison between a current input signal and a signal preceding by one symbol, a delay circuit for delaying a one-symbol differential detection signal by two symbol periods, a two-symbol differential detector for performing phase comparison between the current input signal and an input signal preceding by two symbol periods, a four-symbol differential detector for performing phase comparison between the current input signal and an input signal preceding by four symbol periods, and two error correction circuits. By making use of the four-symbol differential detection signal, error correction of the two-symbol differential detection signal is performed by the error correction circuit while error correction of the one-symbol differential detection signal is performed by using the corrected two-symbol differential detection signal. By diminishing the error of the two-symbol differential detection signal, the error correcting capability for the one-symbol differential detection signal is enhanced with bit error rate characteristic being improved.
摘要翻译：具有用于在执行纠错时检测差分相移信号的误差校正功能的差分检测器包括一个符号差分检测器，用于执行当前输入信号和一个符号之前的信号之间的相位比较;延迟电路，用于延迟一个符号差分检测信号，两个符号周期的两符号差分检测器，用于执行当前输入信号和两个符号周期之前的输入信号之间的相位比较的双符号差分检测器，用于执行当前输入信号和四个符号周期之前的输入信号，以及两个误差校正电路。通过利用四符号差分检测信号，通过纠错电路执行两符号差分检测信号的纠错，同时通过使用校正的两符号差分进行一符号差分检测信号的纠错检测信号。通过减小二符号差分检测信号的误差，增加了单码元差分检测信号的误码校正能力，改善了误码率特性。

2. 发明授权

US06456677B1 Synchronization equipment 失效
标题翻译：同步设备
公开(公告)号：US06456677B1
公开(公告)日：2002-09-24
申请号：US09709650
申请日：2000-11-13
申请人： Katsuhiko Hiramatsu , Mitsuru Uesugi , Hiroaki Sudo
发明人： Katsuhiko Hiramatsu , Mitsuru Uesugi , Hiroaki Sudo
IPC分类号： H04L700
CPC分类号： H04L7/0054 , H04L7/0334 , H04L7/0337 , H04L7/041
摘要： 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.
摘要翻译：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。

3. 发明授权

US07403471B2 Method and apparatus for setting a guard interval in an OFDM communication 有权
标题翻译：用于在OFDM通信中设置保护间隔的方法和装置
公开(公告)号：US07403471B2
公开(公告)日：2008-07-22
申请号：US10773396
申请日：2004-02-09
申请人： Hiroaki Sudo , Mitsuru Uesugi
发明人： Hiroaki Sudo , Mitsuru Uesugi
IPC分类号： H04J11/00
CPC分类号： H04L27/2605
摘要： A method and apparatus for setting a guard interval in an OFDM communication. The method includes attaching a part of a first valid symbol to the first valid symbol as a guard interval and attaching a part of a second valid symbol requiring higher channel quality than the first valid symbol, to the second valid symbol as a guard interval, and providing the guard interval of the second valid symbol at a length greater than the guard interval of the first valid symbol.
摘要翻译：一种在OFDM通信中设置保护间隔的方法和装置。该方法包括将第一有效符号的一部分附加到第一有效符号作为保护间隔，并将需要比第一有效符号更高的信道质量的第二有效符号的一部分附加到作为保护间隔的第二有效符号，以及以大于第一有效符号的保护间隔的长度提供第二有效符号的保护间隔。

4. 发明授权

US06208701B1 Synchronizing apparatus 失效
标题翻译：同步装置
公开(公告)号：US06208701B1
公开(公告)日：2001-03-27
申请号：US08867806
申请日：1997-06-03
申请人： Katsuhiko Hiramatsu , Mitsuru Uesugi , Hiroaki Sudo
发明人： Katsuhiko Hiramatsu , Mitsuru Uesugi , Hiroaki Sudo
IPC分类号： H04L700
CPC分类号： H04L7/0054 , H04L7/0334 , H04L7/0337 , H04L7/041
摘要： 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.
摘要翻译：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。

5. 发明授权

US6111921A Estimator of error rate 失效
标题翻译：估计误差率
公开(公告)号：US6111921A
公开(公告)日：2000-08-29
申请号：US28853
申请日：1998-02-24
申请人： Hiroaki Sudo , Katsuhiko Hiramatsu , Mitsuru Uesugi
发明人： Hiroaki Sudo , Katsuhiko Hiramatsu , Mitsuru Uesugi
IPC分类号： H04L1/00 , H04B1/10 , H04J11/00 , H04L1/20 , H04L27/20
CPC分类号： H04L1/206
摘要： 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.
摘要翻译：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。

6. 发明授权

US06714511B1 OFDM transmission/reception apparatus having a guard interval length changing function 有权
标题翻译：具有保护间隔长度变更功能的OFDM发送接收装置
公开(公告)号：US06714511B1
公开(公告)日：2004-03-30
申请号：US09464388
申请日：1999-12-16
申请人： Hiroaki Sudo , Mitsuru Uesugi
发明人： Hiroaki Sudo , Mitsuru Uesugi
IPC分类号： H04J1100
CPC分类号： H04L27/2605
摘要： The subtractor of the reception system calculates the channel quality using an optimal guard interval length detection signal inserted into one carrier by the transmission system, then the optimal guard interval length detector calculates the minimum guard interval length necessary to eliminate delayed signals using this calculated channel quality, inserts the control signal indicating this guard interval length into one carrier and the reception system sets the guard interval length using this control signal.
摘要翻译：接收系统的减法器使用由传输系统插入到一个载波中的最佳保护间隔长度检测信号来计算信道质量，则最佳保护间隔长度检测器使用该计算的信道质量来计算消除延迟信号所需的最小保护间隔长度将表示该保护间隔长度的控制信号插入一个载波，接收系统使用该控制信号设定保护间隔长度。

7. 发明授权

US07848459B2 Radio receiving apparatus and radio receiving method 有权
标题翻译：无线电接收装置和无线电接收方法
公开(公告)号：US07848459B2
公开(公告)日：2010-12-07
申请号：US11911700
申请日：2006-04-10
申请人： Mitsuru Uesugi , Eiji Ota
发明人： Mitsuru Uesugi , Eiji Ota
IPC分类号： H04L27/00 , H03K9/00
CPC分类号： H04L27/2647 , H04B1/719 , H04L27/2623
摘要： A radio receiving apparatus wherein the interference can be minimized and the power and bands can be effectively used in the process of receiving a signal comprising a combination of an impulse signal and an OFDM signal. In this apparatus, a transmission path equalizing part (205) performs a transmission path equalizing process of a signal comprising a combination of an OFDM signal and an impulse signal of UWB-IR system, and a signal separating part (208) uses a constant (C) to clip the amplitude level for a signal (Y1) demodulated as the OFDM signal, and substantially clips only the signal components of the impulse signal. Further, only when a signal (Y2) demodulated as the impulse signal exhibits an amplitude level greater than the constant (C), it is outputted, while most of the signal power of the combined OFDM signal is removed.
摘要翻译：一种无线电接收设备，其中可以使干扰最小化，并且在接收包括脉冲信号和OFDM信号的组合的信号的过程中可以有效地使用功率和频带。在该装置中，传输路径均衡部（205）执行包括OFDM信号和UWB-IR系统的脉冲信号的组合的信号的传输路径均衡处理，信号分离部（208）使用常数（ C）对作为OFDM信号进行解调的信号（Y1）的幅度电平进行钳位，并且仅基本上剪切脉冲信号的信号分量。此外，只有当作为脉冲信号解调的信号（Y2）表现出大于常数（C）的幅度电平时，才能输出组合的OFDM信号的大部分信号功率。

8. 发明申请

US20080233901A1 Radio Communication Apparatus and Peak Suppression Method 审中-公开
标题翻译：无线电通信装置和峰值抑制方法
公开(公告)号：US20080233901A1
公开(公告)日：2008-09-25
申请号：US10573252
申请日：2004-09-17
申请人： Keisuke Ebiko , Mitsuru Uesugi
发明人： Keisuke Ebiko , Mitsuru Uesugi
IPC分类号： H04B1/02 , H04L25/49 , H04L27/28
CPC分类号： H04L27/2624 , H04L1/0026
摘要： A radio communication apparatus enabling reduction in peak-to-average power ratio without decreasing the transmission efficiency. In this apparatus, buffer section 103 temporarily stores input data prior to peak suppression. Peak detecting section 106 detects a peak with an amplitude level not less than a threshold. Peak cut section 107 reduces the detected peak to the threshold. Switching section 109 is switched so that the peak suppressed signal is output to FFT section 114 when the peak is detected, while the peak suppressed signal is subjected to transmission processing when the peak is not detected. Based on MCS information, signal recovering section 115 eliminates a signal assigned to a subcarrier set for MCS of a high level, and as a substitute, assigns the signal prior to peak suppression stored in buffer section 103. MCS setting section 116 selects MCS based on reception quality information of a communicating party.
摘要翻译：一种能够降低峰均功率比而不降低传输效率的无线电通信装置。在该装置中，缓冲器部分103临时存储峰值抑制之前的输入数据。峰值检测部分106检测幅度不小于阈值的峰值。峰值切割部分107将检测到的峰值减小到阈值。切换部分109被切换，使得当检测到峰值时，峰值抑制信号被输出到FFT部分114，而当没有检测到峰值时，峰值抑制信号被进行发送处理。基于MCS信息，信号恢复部115消除分配给用于高电平的MCS的子载波集的信号，并且作为替代，分配存储在缓冲器部分103中的峰值抑制之前的信号。 MCS设定部116基于通信对方的接收质量信息来选择MCS。

9. 发明申请

US20070033153A1 Disaster prediction system 审中-公开
标题翻译：灾害预测系统
公开(公告)号：US20070033153A1
公开(公告)日：2007-02-08
申请号：US10577473
申请日：2004-10-25
申请人： Ryutaro Yamanaka , Hiroyuki Motozuka , Mitsuru Uesugi
发明人： Ryutaro Yamanaka , Hiroyuki Motozuka , Mitsuru Uesugi
IPC分类号： G06F15/18
CPC分类号： G01V1/008
摘要： A disaster prediction system that provides a plurality of mobile communications apparatuses with a function for detecting abnormal signals that are effective in natural disaster prediction, manages location information for the mobile communications apparatuses and appropriately sets areas of natural disaster prediction, collects a plurality of abnormality detection signals from the mobile communications apparatuses, analyzes these signals per area of prediction, improves the accuracy of natural disaster occurrence prediction, and transmits natural disaster-related information to a plurality of mobile communications apparatuses present in the areas of prediction. In this system, a mobile terminal 200 is equipped with functions for detecting an electromagnetic signal which correlates with earthquake occurrence and which comes from underground and detecting an abnormal electromagnetic signal and a function for locating its present position, a location management apparatus 300 manages location information for a plurality of mobile terminals 200, and an earthquake prediction apparatus 400 appropriately sets the areas of prediction of earthquake occurrence, according to the location management information, and collects a plurality of abnormality detection signals from the mobile terminals 200, generates earthquake-related alert information based on analysis per area of prediction, and transmits that information to the mobile terminals 200.
摘要翻译：一种灾害预测系统，其提供具有检测在自然灾害预测中有效的异常信号的功能的多个移动通信装置，管理移动通信装置的位置信息，适当设定自然灾害预测区域，收集多个异常检测来自移动通信设备的信号，每个预测区域分析这些信号，提高自然灾害发生预测的准确性，并将自然灾害相关信息发送到存在于预测区域中的多个移动通信设备。在该系统中，移动终端200配备有用于检测与地震发生相关并且来自地下的电磁信号的功能，并检测异常电磁信号和定位其当前位置的功能，位置管理装置300管理位置信息对于多个移动终端200，地震预测装置400根据位置管理信息适当地设定地震发生的预测区域，并从移动终端200收集多个异常检测信号，生成地震相关警报基于每个预测区域的分析的信息，并将该信息发送到移动终端200。

10. 发明授权

US07012949B2 OFDM guard band communication apparatus and method 失效
标题翻译： OFDM保护带通信装置及方法
公开(公告)号：US07012949B2
公开(公告)日：2006-03-14
申请号：US09959501
申请日：2001-03-12
申请人： Mitsuru Uesugi
发明人： Mitsuru Uesugi
IPC分类号： H04B1/69
CPC分类号： H04L5/023 , H04B1/707 , H04L5/06
摘要： A transmitting apparatus and method may inverse Fourier transform transmit data converted to parallel form to obtain a first signal. The band of a second signal is limited to a guard frequency band adjacent to the band of the first signal, and a signal comprising the first and second signals is transmitted.
摘要翻译：发送装置和方法可以逆傅立叶变换转换成并行形式的发送数据以获得第一信号。第二信号的频带被限制为与第一信号的频带相邻的保护频带，并且发送包括第一和第二信号的信号。

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