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公开(公告)号：US5303263A
公开(公告)日：1994-04-12
申请号：US904337
申请日：1992-06-24
申请人： Yasuo Shoji , Haruhiro Shiino , Norio Yamaguchi , Masami Abe
发明人： Yasuo Shoji , Haruhiro Shiino , Norio Yamaguchi , Masami Abe
CPC分类号： H03H21/0012 , H04L25/03292 , H04L25/025
摘要： An equalizer including a channel estimator allowing a Viterbi algorithm processor to estimate transmitted symbols accurately, so that the impulse response of a transmission channel may not deviate from the correct one. The equalizer outputs an transmitted symbol sequence estimate having the largest path metric by correcting the channel impulse response by parameter coefficients of the LMS (Least Mean Square) or RLS (Recursive Least Square) algorithm, by compensating for phase fluctuations due to the frequency offset and phase jitter of received signals, or by using a sequence included in an intermediate portion of a TDMA (Time Division Multiple Access) frame format.
摘要翻译： 包括允许维特比算法处理器精确估计发射符号的信道估计器的均衡器，使得传输信道的脉冲响应可能不偏离正确的。 均衡器通过通过补偿由于频率偏移引起的相位波动来校正由LMS（最小均方）或RLS（递归最小二乘法）算法的参数系数的信道脉冲响应而输出具有最大路径度量的发送符号序列估计，以及 接收信号的相位抖动，或通过使用TDMA（时分多址）帧格式的中间部分所包含的序列。
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公开(公告)号：US5680421A
公开(公告)日：1997-10-21
申请号：US604832
申请日：1996-02-22
摘要： A frame synchronization apparatus is applied to the TDMA (Time Division Multiple Access) communication system, particularly, where a plurality of transmission rates are available. The frame synchronization apparatus calculates correlations between sampled sequences of a received signal and an assigned sync sequence during the longest or shortest frame period in the plurality of transmission rates. The apparatus stores positions where the correlations exceed a given threshold. Then, the apparatus sets a search gate at a position after a lapse of the longest or shortest frame period from each of those positions. The apparatus calculates correlations between the sync sequence and sampled sequences of the received signal for all the search gates. The actual transmission rate is determined from the plurality of transmission rates based on a time interval of positions where the correlations beyond a second threshold were detected. Synchronization is thus established.
摘要翻译： 帧同步装置被应用于TDMA（时分多址）通信系统，特别是在多个传输速率可用的情况下。 帧同步装置在多个传输速率的最长或最短帧周期期间，计算接收信号的采样序列与分配的同步序列之间的相关性。 该装置存储相关性超过给定阈值的位置。 然后，该设备在从这些位置中的每个位置经过最长或最短帧周期之后的位置处设置搜索门。 该装置计算所有搜索门的同步序列和接收信号的采样序列之间的相关性。 基于检测到超过第二阈值的相关性的位置的时间间隔，从多个传输速率确定实际传输速率。 因此建立同步。
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公开(公告)号：US5751776A
公开(公告)日：1998-05-12
申请号：US736767
申请日：1996-10-25
IPC分类号： H04L7/04 , H04L27/00 , H04L27/227 , H04L7/02
CPC分类号： H04L27/2273 , H04L2027/0028 , H04L2027/0067 , H04L2027/0069 , H04L7/042
摘要： A receiver to be employed in a digital mobile communication system, more particularly to a receiver for performing complex correlation against a received signal so as to establish and supervise the synchronization with the received signal. The receiver estimates a transmission channel between sending and receiving stations using the received signal and a predetermined reference signal (S11). The phase of the received signal is compensated for using the estimated phase error resulting from the estimation (S12). Complex correlation of the received signal which is compensated for in phase is performed against the reference signal (S13) to obtain a correlation value. The correlation value is compared with a predetermined threshold value (S14). The presence or absence of synchronization between the sending and receiving stations can be detected based on the result of the comparison. In case of detecting synchronization again after the synchronization is once detected, the phase of the received signal is compensated for (S22) using a previously obtained phase variation amount whereby the complex correlation value can be obtained (S23).
摘要翻译： 一种在数字移动通信系统中使用的接收机，更具体地涉及一种用于对接收到的信号执行复杂相关以便建立并监督与接收信号的同步的接收机。 接收机使用接收到的信号和预定的参考信号来估计发送站和接收站之间的传输信道（S11）。 使用由估计得到的估计相位误差补偿接收信号的相位（S12）。 对参考信号（S13）进行相位补偿的接收信号的复相关，得到相关值。 将相关值与预定阈值进行比较（S14）。 可以基于比较的结果来检测发送站和接收站之间是否存在同步。 在一旦检测到同步之后再次检测同步的情况下，使用先前获得的相位变化量补偿接收信号的相位（S22），由此可以获得复相关值（S23）。
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4.发明授权Apparatus and method for estimating maximum likelihood sequence using optimum sampling phase 失效使用最佳采样阶段估计最大似然序列的装置和方法
公开(公告)号：US5533066A
公开(公告)日：1996-07-02
申请号：US190107
申请日：1994-02-02
申请人： Norio Yamaguchi , Haruhiro Shiino
发明人： Norio Yamaguchi , Haruhiro Shiino
CPC分类号： H03M13/6331 , H03M13/41 , H04B3/06 , H04L25/03178 , H04L7/042 , H04L25/03299 , H04L7/0337
摘要： A sampling phase calculating part calculates a complex cross-correlation function; of a part corresponding to a training sequence of an equalizer of each sequence with respect to individual sample value sequences i of a reception signal y(t) which are sampled in a plurality of different sampling phases and selects a sampling phase where the absolute value of the complex cross-correlation functions is maximized, then selects a sampling phase .tau.s where the bit error rate is minimized according to a calculation based on the above selected sampling phase. A sampling processing part samples the reception signals y(t) in the sampling phase .tau.s for use in obtaining estimated values E of a transmission symbol sequence in a Viterbi algorithm processing part (130) and a transmission line estimating part (140), thereby to obtain a transmission symbol sequence with an improved bit error rate and higher accuracy.
摘要翻译： 采样相位计算部分计算复杂互相关函数; 对应于每个序列的均衡器的训练序列相对于在多个不同采样相位中采样的接收信号y（t）的各个采样值序列i的部分，并选择其中绝对值 复杂的互相关函数被最大化，然后根据基于上述选择的采样相位的计算，选择误码率最小化的采样相位τs。 采样处理部分采样采样相位τs中的接收信号y（t），用于获得维特比算法处理部分（130）和传输线估计部分（140）中的传输符号序列的估计值E，由此 以获得具有改进的误码率和更高精度的传输符号序列。
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5.发明授权Maximum likelihood sequence estimator and maximum likelihood sequence estimating method 失效最大似然序列估计和最大似然序列估计方法
公开(公告)号：US5867531A
公开(公告)日：1999-02-02
申请号：US604833
申请日：1996-02-22
IPC分类号： H03H21/00 , H03M13/23 , H03M13/41 , H04B3/04 , H04B7/005 , H04L1/00 , H04L25/03 , H04L25/08 , H04L5/12
CPC分类号： H03M13/6331 , H03M13/41 , H04L1/0054 , H04L25/03318
摘要： When a maximum likelihood sequence estimator according to the present invention is used as an equalizer or the like for a receiver, a Viterbi algorithm processing portion 331 in the maximum likelihood sequence estimator estimates a transmission symbol Ea.sub.n with a reception signal y.sub.n and an estimated impulse response {Eh.sub.k } corresponding to Viterbi algorithm so as to estimate a maximum likelihood sequence corresponding to a soft decision regardless of a modulating method. A transmission logic code decoder 34 converts a transmission symbol Ea.sub.n into hard decision data Eb.sub.m with a value "1" or "0". An envelope detector 333 that is a transmission line quality evaluating means detects an envelope level p.sub.n of the reception signal y.sub.n. A soft decision value converting portion 334 converts the envelope level p.sub.n received from the envelope detector 333 corresponding to the value "1" or "0" of the hard decision data Ebm received from the transmission logic code decoder 34 so as to obtain soft decision value output data q.sub.m.
摘要翻译： 当根据本发明的最大似然序列估计器用作接收机的均衡器等时，最大似然序列估计器中的维特比算法处理部分331用接收信号yn和估计的脉冲响应来估计发送符号Ean {Ehk}对应于维特比算法，以便估计与软决策相对应的最大似然序列，而不管调制方法如何。 传输逻辑代码解码器34将传输符号Ean转换成具有值“1”或“0”的硬判决数据Ebm。 作为传输线质量评估装置的包络检测器333检测接收信号yn的包络电平pn。 软决策值转换部分334将从包络检测器333接收到的包络电平pnn对应于从传输逻辑码解码器34接收的硬判决数据Ebm的值“1”或“0”转换，以获得软判决值 输出数据qm。
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公开(公告)号：US5602881A
公开(公告)日：1997-02-11
申请号：US167967
申请日：1993-12-21
IPC分类号： H04L7/04 , H04L27/00 , H04L27/227 , H04L7/02
CPC分类号： H04L27/2273 , H04L2027/0028 , H04L2027/0067 , H04L2027/0069 , H04L7/042
摘要： A receiver to be employed in a digital mobile communication system, more particularly to a receiver for performing complex correlation against a received signal so as to establish and supervise the synchronization with the received signal. The receiver estimates a transmission channel between sending and receiving stations using the received signal and a predetermined reference signal (S11). The phase of the received signal is compensated for using the estimated phase error resulting from the estimation (S12). Complex correlation of the received signal which is compensated for in phase is performed against the reference signal (S13) to obtain a correlation value. The correlation value is compared with a predetermined threshold value (S14). The presence or absence of the synchronization between the sending and receiving stations can be detected, based on the result of the comparison. In case of detecting synchronization again after the synchronization is once detected, the phase of the received signal is compensated for (S22) using a previously obtained phase variation amount whereby the complex correlation value can be obtained (S23).
摘要翻译： PCT No.PCT / JP93 / 00510 Sec。 371日期：1993年12月21日 102（e）日期1993年12月21日PCT 1993年4月20日PCT PCT。 公开号WO93 / 22861 日期：11月11日，11日在数字移动通信系统中使用的接收机，更具体地说，涉及一种对接收到的信号进行复杂相关的接收机，以建立并监督与接收信号的同步。 接收机使用接收到的信号和预定的参考信号来估计发送站和接收站之间的传输信道（S11）。 使用由估计得到的估计相位误差补偿接收信号的相位（S12）。 对参考信号（S13）进行相位补偿的接收信号的复相关，得到相关值。 将相关值与预定阈值进行比较（S14）。 可以基于比较的结果来检测发送站和接收站之间是否存在同步。 在一旦检测到同步之后再次检测同步的情况下，使用先前获得的相位变化量来补偿接收信号的相位（S22），从而可以获得复相关值（S23）。
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7.发明授权Adaptive equalizer for controlling a step size in proportion to an estimated delay of received signals 失效自适应均衡器，用于与接收信号的估计延迟成比例地控制步长
公开(公告)号：US06021161A
公开(公告)日：2000-02-01
申请号：US840638
申请日：1997-04-25
申请人： Norio Yamaguchi , Haruhiro Shiino
发明人： Norio Yamaguchi , Haruhiro Shiino
CPC分类号： H04L25/03019
摘要： An adaptive equalizer increases the estimation accuracy of a channel, and prevents the modulation characteristics from degrading. A sampling circuit generates a sampled sequence from a received signal. The sampled sequence is supplied from a buffer to an equalizing circuit, a channel estimating circuit and a delay amount estimating circuit. The equalizing circuit obtains an estimated transmitted symbol sequence from the sampled sequence and an estimated impulse response sequence. The channel estimating circuit obtains the estimated impulse response sequence from the sampled sequence, estimated transmitted symbol sequence and the estimated error. The delay amount estimating circuit supplies an estimated delay amount to a step-size control circuit. An error extracting circuit obtains the estimated error. The step-size control circuit controls a step-size parameter in response to the delay amount, and a tap coefficient update circuit updates the tap coefficients by the estimated transmitted symbol, estimated error e.sub.n and step-size parameter.
摘要翻译： 自适应均衡器增加了信道的估计精度，并且防止了调制特性的劣化。 采样电路从接收信号产生采样序列。 采样序列从缓冲器提供给均衡电路，信道估计电路和延迟量估计电路。 均衡电路从采样序列和估计的脉冲响应序列获得估计的发送符号序列。 信道估计电路从采样序列，估计发射符号序列和估计误差获得估计的脉冲响应序列。 延迟量估计电路向步长控制电路提供估计的延迟量。 误差提取电路获得估计误差。 步进大小控制电路响应于延迟量控制步长参数，并且抽头系数更新电路通过估计的发送符号，估计误差en和步长参数来更新抽头系数。
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8.发明授权Method of apparatus for automatic gain control, and digital receiver using same 失效用于自动增益控制的装置的方法和使用它的数字接收机
公开(公告)号：US5946607A
公开(公告)日：1999-08-31
申请号：US828714
申请日：1997-03-28
CPC分类号： H03G3/3052
摘要： An analog input signal is fed to an amplifier having a gain level that is determined by a gain control signal, and the amplified input signal is then converted into a digital received signal. A direct-current offset is detected from the digital received signal. The gain control signal is generated based in part on the direct-current offset.
摘要翻译： 模拟输入信号被馈送到具有由增益控制信号确定的增益电平的放大器，然后将放大的输入信号转换成数字接收信号。 从数字接收信号检测直流偏移。 增益控制信号部分地基于直流偏移产生。
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公开(公告)号：US5761211A
公开(公告)日：1998-06-02
申请号：US689021
申请日：1996-07-30
CPC分类号： H04L7/042
摘要： A timing recovery circuit samples an input signal, correlates the resulting sample stream with a reference pattern at different timings, then compares the resulting correlation values with each other and with a threshold, and estimates a timing at which a peak correlation can be obtained. The peak correlation timing is estimated with a precision exceeding the precision given by the sampling period. The estimated timing can be used by a receiving circuit for bit synchronization, symbol synchronization, or frame synchronization, or to adjust the sampling timing.
摘要翻译： 定时恢复电路对输入信号进行采样，将得到的采样流与不同定时的参考模式相关，然后将所得到的相关值与阈值进行比较，并估计可获得峰值相关性的定时。 以精度超过采样周期给出的精度估计峰值相关定时。 估计的定时可以由接收电路用于比特同步，符号同步或帧同步，或调整采样定时。
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10.发明申请Catalyst module and liquid waste treating apparatus equipped with catalyst module 审中-公开催化剂组件和装有催化剂模块的废液处理装置公开(公告)号：US20060049117A1
公开(公告)日：2006-03-09
申请号：US10542775
申请日：2004-01-29
申请人： Norio Yamaguchi , Akinori Kawachi
发明人： Norio Yamaguchi , Akinori Kawachi
IPC分类号： C02F1/68
CPC分类号： B01J35/04 , B01J19/2485 , B01J19/30 , B01J21/18 , B01J23/50 , B01J23/74 , B01J2219/30223 , B01J2219/30425 , B01J2219/30475 , B01J2219/32279 , B01J2219/32296 , B01J2219/32416 , B01J2219/32433 , B01J2219/32466 , C02F2103/32 , C02F2103/346
摘要： There is provided a catalyst module having a waste liquid inlet passage for the inflow of a waste liquid, whose partition wall is formed of fibrous activated carbon, in which: the fibrous activated carbon is impregnated with or contains a catalyst; and a waste liquid in the waste liquid inlet passage passes through the partition wall and is discharged out of the waste liquid inlet passage. Further, there is provided a catalyst module, in which a plurality of waste liquid inlet passages is arranged in the form of a bundle. In the catalyst module are also provided partition walls formed of a fibrous activated carbon layer prepared by laminating a plurality of the fibrous activated carbon in the form of sheets.
摘要翻译： 提供了一种催化剂组件，其具有用于流入废液的废液入口通道，其分隔壁由纤维状活性炭形成，其中：纤维状活性炭浸渍或含有催化剂; 废液入口通道中的废液通过分隔壁并排出废液入口通道。 此外，提供了一种催化剂模块，其中多个废液入口通道以束的形式布置。 在催化剂组件中还提供了由纤维活性炭层形成的间隔壁，该纤维活性炭层通过层压多个片状的纤维状活性炭而制备。
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