公开(公告)号：US07251272B2

公开(公告)日：2007-07-31

申请号：US09933038

申请日：2001-08-21

申请人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

发明人： Sadaki Futagi ,  Mitsuru Uesugi ,  Tadashi Matsumoto

IPC分类号： H03H7/30

CPC分类号： H04L25/0206 ,  H04B1/1081 ,  H04L25/03343 ,  H04W52/242 ,  H04W52/248

摘要： Noise generating section 106 generates noise data of a white Gaussian noise, and noise adding section 107 adds received data and the noise data. Channel estimating section 108 performs channel estimation using the added data output from noise adding section 107. At this point, when a level of a preceding signal is equal to or less than that of the noise data, channel estimating section 108 is not capable of detecting the preceding signal. Accordingly, in the case where a received level of a preceding signal is extremely lower than that of a delayed signal and a noise level is further lower than the received level of the preceding signal, it is possible to perform pre-equalization using the delayed signal as a desired signal, whereby it is possible to maintain the reception characteristic of a communication partner.

摘要翻译： 噪声生成部106生成白高斯噪声的噪声数据，噪声添加部107将接收到的数据和噪声数据相加。 信道估计部108使用从噪声添加部107输出的相加数据进行信道估计。 此时，当前一信号的电平等于或小于噪声数据的电平时，信道估计部分108不能检测前一信号。 因此，在前一信号的接收电平比延迟信号的接收电平低得多并且噪声电平进一步低于先前信号的接收电平的情况下，可以使用延迟信号进行预均衡 作为期望的信号，由此可以保持通信伙伴的接收特性。

公开(公告)号：US06032029A

公开(公告)日：2000-02-29

申请号：US822834

申请日：1997-03-24

申请人： Sadaki Futagi ,  Mitsuru Uesugi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

发明人： Sadaki Futagi ,  Mitsuru Uesugi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

IPC分类号： H03H17/02 ,  H04B3/06 ,  H04L25/03 ,  H04L27/22 ,  H04L27/227 ,  H04B1/10

CPC分类号： H04L27/22 ,  H04L25/03057

摘要： An equalizer block forming part of a receiver compensates transmission path characteristics of a baseband received signal to generate a prediction signal, and differential-logic-converts a demodulated signal generated by demodulating the prediction signal to generate a differential-logic-conversion demodulated signal. A differential-detection demodulator block differential-detects the prediction signal from the equalizer block and subsequently demodulates the differential-detected prediction signal to generate a differential-detection demodulated signal. A selector block selects either the differential-logic-conversion demodulated signal from the equalizer block or the differential-detection demodulated signal from the difference-detection demodulator block.

摘要翻译： 构成接收机的一部分的均衡器块补偿基带接收信号的传输路径特性，生成预测信号，对解调后的解调信号进行差分逻辑转换，生成差分逻辑转换解调信号。 差分检测解调器块差分检测来自均衡器块的预测信号，并随后解调差分检测的预测信号以产生差分检测解调信号。 选择器块选择来自均衡器块的差分逻辑转换解调信号或来自差分检测解调器块的差分检测解调信号。

公开(公告)号：US5659584A

公开(公告)日：1997-08-19

申请号：US593956

申请日：1996-01-30

申请人： Mitsuru Uesugi ,  Sadaki Futagi ,  Koichi Homma

发明人： Mitsuru Uesugi ,  Sadaki Futagi ,  Koichi Homma

IPC分类号： H03H21/00 ,  H04B1/12 ,  H04B3/04 ,  H04B7/005 ,  H04B7/08 ,  H04L1/06 ,  H04L25/03 ,  H04B7/10

CPC分类号： H04L25/03057 ,  H04B1/126 ,  H04B7/0845 ,  H04L1/06 ,  H04L2025/0349

摘要： A data signal composed of a desired signal faded and delayed and an interference signal faded and delayed is received by a pair of antennas. A direct component of the interference signal and a delay component of the desired signal are removed from the data signals received by the antennas in a decision-feedback type of desired signal equalizing unit, and the direct component of the desired signal and the delay component of the interference signal are removed from the data signals in a decision-feedback type of interference signal equalizing unit. Also, a delay component of the interference signal is removed in the desired signal equalizing unit by subtracting a replica of the delay component of the interference signal produced in a backward tap from a demodulated interference signal produced in the interference signal equalizing unit in a previous operation, and a delay component of the desired signal is removed in the interference signal equalizing unit by subtracting a replica of the delay component of the desired signal produced in another backward tap from a demodulated desired signal produced in the desired signal equalizing unit in the previous operation. Therefore, the demodulated desired signal agreeing with the desired signal is output from the desired signal equalizing unit, and the demodulated interference signal agreeing with the interference signal is output from the interference signal equalizing unit.

摘要翻译： 由一对天线接收由期望信号褪色和延迟组成的数据信号和衰落和延迟的干扰信号。 干扰信号的直接分量和期望信号的延迟分量从期望信号均衡单元的判决反馈类型中的天线接收的数据信号中去除，并且期望信号和延迟分量的直接分量 干扰信号在干扰信号均衡单元的判决反馈型中从数据信号中去除。 此外，通过从先前的操作中在干扰信号均衡单元中产生的解调干扰信号中减去在后向抽头中产生的干扰信号的延迟分量的副本，在期望的信号均衡单元中去除干扰信号的延迟分量 并且在干扰信号均衡单元中通过从先前操作中在所需信号均衡单元中产生的解调的期望信号中减去在另一个反向抽头中产生的期望信号的延迟分量的副本来去除所需信号的延迟分量 。 因此，从期望信号均衡单元输出与期望信号一致的解调的期望信号，并且从干扰信号均衡单元输出与干扰信号一致的解调干扰信号。

公开(公告)号：US06289064B1

公开(公告)日：2001-09-11

申请号：US08810767

申请日：1997-03-05

申请人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Sadaki Futagi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

发明人： Katsuhiko Hiramatsu ,  Mitsuru Uesugi ,  Sadaki Futagi ,  Hiroshi Suzuki ,  Hitoshi Yoshino

IPC分类号： H04L700

CPC分类号： H04L7/042 ,  H04L7/08

摘要： A synchronization equipment performs correlation processing between a first known pattern included in a received signal and a second known pattern, and detects reception timing of the received signal. A correlation value computing portion computes a correlation value between the first known pattern and the second known pattern at every reception time. A reception timing detection portion compares the computed related value with a predetermined threshold value, determines the reception time when the correlation value becomes larger than the threshold value to be the reception timing of a received signal, and, after this determination, suspends the comparison between the correlation value and the threshold value, and holds the reception time determined to be the reception timing.

摘要翻译： 同步设备执行包括在接收信号中的第一已知模式与第二已知模式之间的相关处理，并检测接收信号的接收定时。 相关值计算部分在每个接收时间计算第一已知模式和第二已知模式之间的相关值。 接收定时检测部分将计算出的相关值与预定阈值进行比较，当相关值变得大于阈值以确定接收信号的接收定时时的接收时间，并且在该确定之后，暂停比较 相关值和阈值，并将接收时间确定为接收定时。

公开(公告)号：US5748673A

公开(公告)日：1998-05-05

申请号：US594536

申请日：1996-01-31

申请人： Sadaki Futagi ,  Mitsuru Uesugi

发明人： Sadaki Futagi ,  Mitsuru Uesugi

IPC分类号： H03H21/00 ,  H04B3/04 ,  H04B7/005 ,  H04B7/08 ,  H04L25/03 ,  H03H7/30 ,  H03H7/40

CPC分类号： H04B7/0845 ,  H04B7/0851 ,  H04L25/03063 ,  H04L2025/0349 ,  H04L2025/03509

摘要： A data receiving apparatus comprising: a receiving portion for receiving a desired radio wave signal including a desired baseband signal and an interference radio wave signal including an interference baseband signal, the desired radio wave signal and the interference radio wave signal having substantially the same frequency; first weighting circuit for weighting an output of the receiving circuit with a first coefficient adaptively renewed such that the desired baseband signal is reproduced; a subtracting circuit coupled to the first weighting circuit; a first judging circuit coupled to the first subtracting circuit; a second weighting circuit for weighting the baseband signal with a second coefficient adaptively renewed such that the interference baseband signal is reproduced; a second judging circuit coupled to the second weighting circuit; and a supplying circuit for supplying the reproduced interference baseband signal to the subtracting circuit, the subtracting circuit effecting a subtraction between an output of the first weighting circuit and an output of the supplying circuit. Modifications for diversity receiving, delayed component cancelling, receiving timing adjusting are also disclosed.

摘要翻译： 一种数据接收装置，包括：接收部分，用于接收包括期望的基带信号的期望无线电波信号和包括干扰基带信号的干扰无线电波信号，所述无线电波信号和具有基本相同频率的干扰无线电波信号; 第一加权电路，用于以自适应地更新的第一系数对接收电路的输出进行加权，使得再现所需的基带信号; 耦合到所述第一加权电路的减法电路; 耦合到所述第一减法电路的第一判断电路; 第二加权电路，用于以自适应地更新的第二系数对所述基带信号进行加权，使得所述干扰基带信号被再现; 耦合到所述第二加权电路的第二判断电路; 以及提供电路，用于将再现的干扰基带信号提供给减法电路，减法电路实现第一加权电路的输出与提供电路的输出之间的减法。 还公开了分集接收，延迟分量消除，接收定时调整的修改。

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。

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。

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。

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。

公开(公告)号：US20050213538A1

公开(公告)日：2005-09-29

申请号：US10516004

申请日：2003-05-29

申请人： Keisuke Ebiko ,  Mitsuru Uesugi ,  Isamu Yoshii ,  Kenichi Miyoshi ,  Takahisa Aoyama

发明人： Keisuke Ebiko ,  Mitsuru Uesugi ,  Isamu Yoshii ,  Kenichi Miyoshi ,  Takahisa Aoyama

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04Q7/00

CPC分类号： H04W74/02 ,  H04N21/234327 ,  H04N21/41407 ,  H04N21/6131 ,  H04N21/631 ,  H04W4/18 ,  H04W40/36 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

摘要： A server (191) transmits image information consisting of basic data and complementary data to a router (100) through the Internet (192). The router (100) allocates the basic data to a BS (110) of a cellular system (193) and the complementary data to an AP (120) of a wireless LAN system (194). The BS (110) transmits the basic data to a MS (150) and the AP (120) transmits the complementary data to the MS (150). When the MS (150) is located in the area of the cellular system (193), the MS always maintains a communication channel with the BS (110) and when the MS enters the area of the wireless LAN system (194), the MS also opens a channel with the AP (120) while maintaining the channel with the BS (110). This allows the user to continue seamless communication.

摘要翻译： 服务器（191）通过因特网（192）将由基本数据和补充数据组成的图像信息发送到路由器（100）。 路由器（100）将基本数据分配给蜂窝系统（193）的BS（110），并将补充数据分配给无线LAN系统（194）的AP（120）。 BS（110）将基本数据发送到MS（150），并且AP（120）向MS（150）发送补充数据。 当MS（150）位于蜂窝系统（193）的区域中时，MS始终保持与BS（110）的通信信道，并且当MS进入无线LAN系统（194）的区域时，MS 还在与BS（110）保持信道的同时打开具有AP（120）的信道。 这允许用户继续无缝通信。