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公开(公告)号：US5297165A
公开(公告)日：1994-03-22
申请号：US724612
申请日：1991-07-02
申请人： Takashi Ueda , Hiroshi Suzuki , Hitoshi Yoshino
发明人： Takashi Ueda , Hiroshi Suzuki , Hitoshi Yoshino
CPC分类号： H04L25/03038 , H04L25/03019
摘要： In a transversal type equalizer having a series connected delay elements, multipliers are coupled with each output of each delay element and an adder adds outputs of the multipliers to provide an equalized output signal for equalizing a time division radio receive signal for every burst in mobile communication. A receive memory (11) stores the receive signal. A transversal type equalization process circuit (77a) is coupled with the output of the memory (11). A output memory (100) stores on equalized output signal. In training tap coefficients of a transversal filter, a tap or a delay element is precluded when an absolute value of a tap coefficient is less than a predetermined value, so that calculation amount for updating tap coefficients is decreased and tracking characteristics are improved. A multiplier (15) is inserted between an output of the receive memory (11) and an input of the equalization process circuit (77a) so that a signal which is subject to equalization is phase-shifted beforehand so that frequency offset between transmit frequency in a transmitter and local frequency in a receiver is compensated. The phase adjustment by the multiplier (15) depends upon residual phase error at an output of the equalization process circuit (77a). An output memory (100) is used as a training signal to initialize the tap coefficients of the equalization process circuit (77a) during a burst when equalized output signal has an error larger than a predetermined value.
摘要翻译： 在具有串联连接的延迟元件的横向型均衡器中，乘法器与每个延迟元件的每个输出端耦合，并且加法器将乘法器的输出相加以提供均衡的输出信号，以均衡用于移动通信中的每个突发的时分无线电接收信号 。 接收存储器（11）存储接收信号。 横向型均衡处理电路（77a）与存储器（11）的输出端相连。 输出存储器（100）存储均衡的输出信号。 在训练横向滤波器的抽头系数时，当抽头系数的绝对值小于预定值时，排除抽头或延迟元件，从而降低更新抽头系数的计算量并提高跟踪特性。 在接收存储器（11）的输出端和均衡处理电路（77a）的输入端之间插入一个乘法器（15），使得经过均衡的信号被预先相移，使得发送频率之间的频率偏移 接收机中的发射机和本地频率被补偿。 乘法器（15）的相位调整取决于均衡处理电路（77a）的输出处的残留相位误差。 当均衡的输出信号具有大于预定值的误差时，输出存储器（100）用作训练信号以在突发期间初始化均衡处理电路（77a）的抽头系数。
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公开(公告)号：US06289064B1
公开(公告)日：2001-09-11
申请号：US08810767
申请日：1997-03-05
IPC分类号： H04L700
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。
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公开(公告)号：US20070274372A1
公开(公告)日：2007-11-29
申请号：US11752714
申请日：2007-05-23
申请人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
IPC分类号： H04L12/28
摘要： A radio communication apparatus for performing transmission and reception of radio communications simultaneously by using different carrier frequencies for transmission and reception, comprising: a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal; and a power suppressor for coupling loop interference signal for attenuating the signal power in order to suppress the coupling loop interference signal power that is contained in the signal.
摘要翻译： 一种无线电通信装置，用于通过使用不同的载波频率同时进行无线电通信的发送和接收，用于发送和接收，包括：收发器，具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字的耦合环路干扰信号去除功能 域，用于去除包含在信号中的耦合环路干扰信号; 以及用于耦合环路干扰信号的功率抑制器，用于衰减信号功率，以便抑制信号中包含的耦合环路干扰信号功率。
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公开(公告)号：US20070230547A1
公开(公告)日：2007-10-04
申请号：US11694124
申请日：2007-03-30
申请人： Takahiro ASAI , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
发明人： Takahiro ASAI , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
IPC分类号： H04L5/16
CPC分类号： H04B1/525
摘要： A radio communication apparatus for performing transmission and reception based on radio communication includes: a power suppressor for coupling loop interference signal for attenuating signal power of a received signal to suppress the coupling loop interference signal power of the received signal; and a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor for coupling loop interference signal.
摘要翻译： 一种用于基于无线电通信进行发送和接收的无线电通信装置包括：功率抑制器，用于耦合环路干扰信号，用于衰减接收信号的信号功率，以抑制接收信号的耦合环路干扰信号功率; 以及具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字域的耦合环路干扰信号去除功能的收发器，用于去除包含在从功率抑制器输出的用于耦合环路干扰信号的信号中的耦合环路干扰信号。
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公开(公告)号：US07848711B2
公开(公告)日：2010-12-07
申请号：US11694124
申请日：2007-03-30
申请人： Takahiro Asai , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
发明人： Takahiro Asai , Hui Shi , Hiromasa Fujii , Takefumi Yamada , Hitoshi Yoshino , Hiroshi Suzuki , Kazuhiko Fukawa , Satoshi Suyama
CPC分类号： H04B1/525
摘要： A radio communication apparatus for performing transmission and reception based on radio communication includes: a power suppressor for coupling loop interference signal for attenuating signal power of a received signal to suppress the coupling loop interference signal power of the received signal; and a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal output from the power suppressor for coupling loop interference signal.
摘要翻译： 一种用于基于无线电通信进行发送和接收的无线电通信装置包括：功率抑制器，用于耦合环路干扰信号，用于衰减接收信号的信号功率，以抑制接收信号的耦合环路干扰信号功率; 以及具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字域的耦合环路干扰信号去除功能的收发器，用于去除包含在从功率抑制器输出的用于耦合环路干扰信号的信号中的耦合环路干扰信号。
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公开(公告)号：US5710792A
公开(公告)日：1998-01-20
申请号：US416858
申请日：1995-04-17
申请人： Kazuhiko Fukawa , Hitoshi Yoshino , Hiroshi Suzuki
发明人： Kazuhiko Fukawa , Hitoshi Yoshino , Hiroshi Suzuki
CPC分类号： H04L25/03273
摘要： A baseband signal, obtained by quasi-coherent detecting a received signal, is sampled and written as a sequence of baseband signal samples into a buffer memory. For each baseband signal sample read out from the buffer memory, a maximum likelihood sequence estimation part generates a desired symbol sequence and feeds it to a transversal filter having a characteristic based on an estimated impulse response of the transmission path in correspondence with the timing of the baseband signal sample. A phase error between an estimated received signal from the transversal filter and the corresponding baseband signal sample is sequentially detected by a phase error detecting part. The phase error thus obtained is fed to an offset correcting signal generating part, which calculates an estimated offset angular frequency .DELTA..omega..sub.e on the basis of the phase error, generates an offset correcting signal of an angular frequency equal in absolute value to the estimated offset angular frequency but opposite thereto in the direction of rotation and feeds the offset correcting signal to a correcting multiplier. The correcting multiplier multiplies the baseband signal sample by the offset correcting signal to correct it to cancel an angular frequency offset, and a subtractor calculates a difference between the corrected baseband signal sample and the estimated received signal from the transversal filter.
摘要翻译： PCT No.PCT / JP94 / 02092 Sec。 371日期1995年04月17日 102（e）日期1995年4月17日PCT 1994年12月14日PCT PCT。 第WO95 / 17052号公报 日期：1995年6月22日通过准相干检测接收信号获得的基带信号被采样并作为基带信号采样序列写入缓冲存储器。 对于从缓冲存储器读出的每个基带信号样本，最大似然序列估计部分产生期望的符号序列，并将其馈送到具有基于传输路径的估计的脉冲响应的特性的横向滤波器 基带信号样本。 来自横向滤波器的估计接收信号与对应的基带信号采样之间的相位误差由相位误差检测部分依次检测。 这样获得的相位误差被馈送到偏移校正信号产生部分，该偏移校正信号产生部分基于相位误差来计算估计偏移角频率ΔTATA，生成绝对值等于估计偏移的角频率的偏移校正信号 角度频率但与旋转方向相反，并将偏移校正信号馈送到校正乘数。 校正乘法器将基带信号采样乘以偏移校正信号以对其进行校正以消除角频率偏移，并且减法器计算经校正的基带信号样本与来自横向滤波器的估计的接收信号之间的差。
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7.发明授权Interference signal cancelling method, receiver and communication system using the same 失效干扰信号消除方法，接收机和通信系统使用相同
公开(公告)号：US5537443A
公开(公告)日：1996-07-16
申请号：US302735
申请日：1994-09-09
申请人： Hitoshi Yoshino , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Hitoshi Yoshino , Kazuhiko Fukawa , Hiroshi Suzuki
CPC分类号： H04L25/03305 , H04B1/123 , H04L25/025 , H04L25/03292 , H04L25/03331
摘要： Pluralities of estimated desired and interference signal sequence candidates corresponding to the states of transition of desired and interference signals estimated to receive are sequentially generated in a state estimation part 40, from which they are provided to a desired signal estimation part 10 and an interference signal estimation part 20. These estimation parts 10 and 20 generate estimated desired and interference signals from the sequence candidates in accordance with conversion parameters from a channel parameter estimation part 50. A signal of their sum is subtracted in an error estimation part 30 from a received signal to yield an estimation error signal .epsilon.. The state estimation part 40 estimates estimated desired and interference signal sequences for the generated sequence candidates.
摘要翻译： PCT No.PCT / JP94 / 00059 Sec。 371日期1994年9月9日 102（e）1994年9月9日PCT 1994年1月18日PCT PCT。 WO94 / 17600 PCT出版物 日期为1994年8月4日。在状态估计部40中顺序生成与估计接收的期望信号和干扰信号的转换状态对应的估计的期望信号序列候选和干扰信号序列候选数据，并将其提供给期望的信号估计 部分10和干扰信号估计部分20.这些估计部分10和20根据来自信道参数估计部分50的转换参数从序列候选产生估计的期望信号和干扰信号。在误差估计中减去它们的和的信号 部分30从接收到的信号产生估计误差信号ε。 状态估计部40估计所生成的序列候选的估计的期望信号序列和干扰信号序列。
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公开(公告)号：US07778611B2
公开(公告)日：2010-08-17
申请号：US11752714
申请日：2007-05-23
申请人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Takahiro Asai , Hui Shi , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
摘要： A radio communication apparatus for performing transmission and reception of radio communications simultaneously by using different carrier frequencies for transmission and reception, comprising: a transceiver having a coupling loop interference signal removal function for analog domain and/or a coupling loop interference signal removal function for digital domain, for removing a coupling loop interference signal contained in a signal; and a power suppressor for coupling loop interference signal for attenuating the signal power in order to suppress the coupling loop interference signal power that is contained in the signal.
摘要翻译： 一种无线电通信装置，用于通过使用不同的载波频率同时进行无线电通信的发送和接收，用于发送和接收，包括：收发器，具有用于模拟域的耦合环路干扰信号去除功能和/或用于数字的耦合环路干扰信号去除功能 域，用于去除包含在信号中的耦合环路干扰信号; 以及用于耦合环路干扰信号的功率抑制器，用于衰减信号功率，以便抑制信号中包含的耦合环路干扰信号功率。
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9.发明授权
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
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。
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公开(公告)号：US20080008126A1
公开(公告)日：2008-01-10
申请号：US11774394
申请日：2007-07-06
申请人： Masashige SHIRAKABE , Takahiro Asai , Naoto Matoba , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
发明人： Masashige SHIRAKABE , Takahiro Asai , Naoto Matoba , Hitoshi Yoshino , Satoshi Suyama , Kazuhiko Fukawa , Hiroshi Suzuki
IPC分类号： H04Q7/00
CPC分类号： H04B7/2615 , H04W72/1263 , H04W84/047 , H04W92/10
摘要： An object is to provide a wireless communication device and a wireless communication method enabling improvement of communication efficiency. A communication control portion of a mobile station determines, in a procedure prior to data communication with a base station, a time interval for performing data transmission/reception with the base station. In the time interval determined by the communication control portion, a digital baseband circuit 107 executes control so as to perform data transmission as well as data reception.
摘要翻译： 目的在于提供能够提高通信效率的无线通信装置和无线通信方法。 移动台的通信控制部分在与基站进行数据通信之前的过程中，确定用于与基站进行数据发送/接收的时间间隔。 在由通信控制部确定的时间间隔中，数字基带电路107执行控制，以便执行数据传输以及数据接收。
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