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公开(公告)号：US20110206168A1
公开(公告)日：2011-08-25
申请号：US12883636
申请日：2010-09-16
IPC分类号： H04B1/10
CPC分类号： H04B17/345 , H04B17/327
摘要： According to an embodiment, a channel estimator includes a channel response estimation section configured to estimate a channel response by correlation processing between a received signal and a known pattern signal; a path power calculation section configured to measure power of each path within an output of the channel response estimation section; a noise power calculation section configured to measure noise power from the output of the channel response estimation section; a path determination section configured to determine paths to be preserved by using the path power outputted from the path power calculation section and the noise power outputted from the noise power calculation section; and a noise removal section configured to remove values in time domain excepting the paths determined at the path determination section, from the output of the channel response estimation section.
摘要翻译： 根据实施例，信道估计器包括信道响应估计部分，被配置为通过接收信号和已知模式信号之间的相关处理来估计信道响应; 路径功率计算部，被配置为测量所述信道响应估计部的输出内的各路径的功率; 噪声功率计算部，被配置为从所述信道响应估计部的输出测量噪声功率; 路径决定部，被配置为通过使用从路径功率计算部输出的路径功率和从噪声功率计算部输出的噪声功率来确定要保存的路径; 以及噪声去除部，被配置为从所述信道响应估计部的输出除去在所述路径判定部所决定的路径以外的时域中的值。
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2.发明申请公开(公告)号：US20100207670A1
公开(公告)日：2010-08-19
申请号：US12706949
申请日：2010-02-17
IPC分类号： H03B28/00
CPC分类号： H04L27/0014
摘要： A frequency error detecting circuit includes: an oscillator; a frequency converting unit for a received signal on the basis of the oscillation output and output the received signal; a time-to-frequency converting unit configured to convert the output of the frequency converting unit into a frequency domain signal; a frequency shift determining unit configured to determine presence or absence of a frequency shift between an output frequency of the frequency converting unit and a predetermined carrier frequency; and a control unit configured to repeat frequency conversion processing and time-to-frequency conversion processing while controlling an oscillation frequency of the oscillator on the basis of a determination result of the frequency shift determining unit and cause the output frequency of the frequency converting unit to converge on a predetermined value to thereby detect a frequency error between the frequency of the received signal and the predetermined carrier frequency.
摘要翻译： 频率误差检测电路包括：振荡器; 基于振荡输出的接收信号的频率转换单元，并输出接收信号; 时频转换单元，被配置为将频率转换单元的输出转换为频域信号; 频率确定单元，被配置为确定频率转换单元的输出频率与预定载波频率之间的频移的存在或不存在; 以及控制单元，其被配置为在基于所述频移确定单元的确定结果控制所述振荡器的振荡频率的同时重复频率转换处理和时间 - 频率转换处理，并且使所述频率转换单元的输出频率 收敛于预定值，从而检测接收信号的频率与预定载波频率之间的频率误差。
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3.发明授权Frequency error detecting circuit, frequency error detecting method, and frequency correcting circuit 失效频率误差检测电路，频率误差检测方法和频率校正电路公开(公告)号：US08115521B2
公开(公告)日：2012-02-14
申请号：US12706949
申请日：2010-02-17
IPC分类号： H04B1/16
CPC分类号： H04L27/0014
摘要： A frequency error detecting circuit includes: an oscillator; a frequency converting unit for a received signal on the basis of the oscillation output and output the received signal; a time-to-frequency converting unit configured to convert the output of the frequency converting unit into a frequency domain signal; a frequency shift determining unit configured to determine presence or absence of a frequency shift between an output frequency of the frequency converting unit and a predetermined carrier frequency; and a control unit configured to repeat frequency conversion processing and time-to-frequency conversion processing while controlling an oscillation frequency of the oscillator on the basis of a determination result of the frequency shift determining unit and cause the output frequency of the frequency converting unit to converge on a predetermined value to thereby detect a frequency error between the frequency of the received signal and the predetermined carrier frequency.
摘要翻译： 频率误差检测电路包括：振荡器; 基于振荡输出的接收信号的频率转换单元，并输出接收信号; 时频转换单元，被配置为将频率转换单元的输出转换为频域信号; 频率确定单元，被配置为确定频率转换单元的输出频率与预定载波频率之间的频移的存在或不存在; 以及控制单元，其被配置为在基于所述频移确定单元的确定结果控制所述振荡器的振荡频率的同时重复频率转换处理和时间 - 频率转换处理，并且使所述频率转换单元的输出频率 收敛于预定值，从而检测接收信号的频率与预定载波频率之间的频率误差。
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公开(公告)号：US20110033012A1
公开(公告)日：2011-02-10
申请号：US12834178
申请日：2010-07-12
IPC分类号： H04L27/06
CPC分类号： H04L25/022 , H04L25/03006 , H04L25/03159 , H04L27/2662 , H04L27/2666 , H04L27/2675
摘要： A channel estimator includes: a delay time estimation section configured to estimate a delay time of a received signal; an FFT parameter determination section configured to determine an FFT window position and an FFT size according to the estimated delay time; a first and a second FFT sections configured to transform the received signal and a known pattern signal, respectively, to the frequency domain based on the FFT window position and the FFT size that are determined; a channel response calculation section configured to perform division processing to divide the output of the first FFT section by the output of the second FFT section; and an IFFT section configured to apply IFFT to the output of the channel response calculation section based on the determined FFT size, and the delay time estimation section estimates a delay time based on the output of the IFFT section.
摘要翻译： 信道估计器包括：延迟时间估计部分，被配置为估计接收信号的延迟时间; FFT参数确定部分，被配置为根据估计的延迟时间确定FFT窗口位置和FFT大小; 第一和第二FFT部分，被配置为基于所确定的FFT窗口位置和FFT大小将接收信号和已知模式信号分别转换到频域; 信道响应计算部分，被配置为执行除法处理，以将第一FFT部分的输出除以第二FFT部分的输出; 以及IFFT部，被配置为基于所确定的FFT大小将IFFT应用于所述信道响应计算部的输出，并且所述延迟时间估计部基于所述IFFT部的输出来推定延迟时间。
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公开(公告)号：US20100226467A1
公开(公告)日：2010-09-09
申请号：US12714751
申请日：2010-03-01
IPC分类号： H04L7/02
CPC分类号： H04L7/042 , H04B1/7075 , H04B2201/70715 , H04H40/18 , H04L7/043
摘要： A frame number detecting device includes: a symbol counter that receives a received signal including frames each of which is formed of a predetermined number of symbols, and outputs a count value as a symbol number for each of the symbols by incrementing the count value by one every time one symbol is inputted, each of the frames including a frame synchronization signal including a part obtained by shifting a frame synchronization signal of a different frame on a symbol-by-symbol basis according to a predetermined rule; a sequence storage that stores a synchronization sequence based on at least one of the frame synchronization signals included in the received signal, and a pattern matching unit that performs pattern matching between the synchronization sequence stored in the sequence storage and the received signal.
摘要翻译： 帧号检测装置包括：符号计数器，其接收包括由预定数量的符号形成的帧的接收信号，并且通过将计数值递增1来输出计数值作为每个符号的符号数 每次输入一个符号时，每个帧包括帧同步信号，该帧同步信号包括根据预定规则逐个符号地移位不同帧的帧同步信号而获得的部分; 基于包含在接收信号中的帧同步信号中的至少一个存储同步序列的序列存储器，以及执行存储在序列存储器中的同步序列与接收信号之间的模式匹配的模式匹配单元。
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公开(公告)号：US08238272B2
公开(公告)日：2012-08-07
申请号：US12683034
申请日：2010-01-06
申请人： Masami Aizawa
发明人： Masami Aizawa
IPC分类号： H04J1/00
CPC分类号： H04L25/03318 , H04L25/022 , H04L25/03292
摘要： A frequency division multiplex transmission signal receiving apparatus for receiving a frequency division multiplex transmission signal using a plurality of carries includes: an estimation section estimating a transfer function of a received signal after the received signal has been transformed into a frequency domain signal; a demodulation section demodulating the received signal according to the transfer function estimated by the estimation section; a plurality of variation detecting sections performing variation detection using a plurality of different variation detection methods, based on the transfer function estimated by the estimation section; a reliability determining section determining reliability based on a result of a combination of variation detection results of the plurality of variation detecting sections; and a correction section performing error correction of the demodulated signal from the demodulation section, the demodulated signal being subjected to an application of a reliability determination result of the reliability determining section.
摘要翻译： 一种用于使用多个载波接收频分多路传输信号的频分复用传输信号接收装置包括：估计部分，估计在接收信号已被变换为频域信号之后的接收信号的传递函数; 解调部，根据由所述估计部估计出的传递函数解调所述接收信号; 多个变化检测部，基于由所述估计部估计的传递函数，使用多种不同的变化检测方法进行变动检测; 可靠性判定部，基于多个变化检测部的变动检测结果的组合的结果来确定可靠性; 以及校正部分，对来自解调部分的解调信号进行纠错，对该解调信号进行可靠性确定部分的可靠性确定结果的应用。
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7.发明授权Receiver and receiving method for determining an output signal having minimum error among output signals 失效用于确定输出信号中具有最小误差的输出信号的接收和接收方法公开(公告)号：US07826570B2
公开(公告)日：2010-11-02
申请号：US11511330
申请日：2006-08-29
申请人： Kenichi Tokoro , Masami Aizawa
发明人： Kenichi Tokoro , Masami Aizawa
CPC分类号： H04L1/0054 , H04B7/0848 , H04L1/0052 , H04L27/2647
摘要： A receiver has a plurality of synthesizers configured to synthesize signals received by N pieces of antennas by using weighted coefficients different from each other, where N is an integer of two or more, a determination part configured to determine an output signal having a minimum error among output signals of the plurality of synthesizers in units of a predetermined transmission unit, and a re-synthesis part configured to sequentially re-synthesize and output a signal determined to have the minimum error by the determination part.
摘要翻译： 接收机具有多个合成器，其被配置为通过使用彼此不同的加权系数来合成由N个天线接收的信号，其中N是2或更大的整数，确定部分被配置为确定具有最小误差的输出信号 多个合成器的输出信号以预定的传输单元为单位，以及重新合成部件，被配置为顺序地重新合成并输出由确定部分确定为具有最小误差的信号。
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公开(公告)号：US20100189133A1
公开(公告)日：2010-07-29
申请号：US12683034
申请日：2010-01-06
申请人： Masami Aizawa
发明人： Masami Aizawa
IPC分类号： H04J1/00
CPC分类号： H04L25/03318 , H04L25/022 , H04L25/03292
摘要： A frequency division multiplex transmission signal receiving apparatus for receiving a frequency division multiplex transmission signal using a plurality of carries includes: an estimation section estimating a transfer function of a received signal after the received signal has been transformed into a frequency domain signal; a demodulation section demodulating the received signal according to the transfer function estimated by the estimation section; a plurality of variation detecting sections performing variation detection using a plurality of different variation detection methods, based on the transfer function estimated by the estimation section; a reliability determining section determining reliability based on a result of a combination of variation detection results of the plurality of variation detecting sections; and a correction section performing error correction of the demodulated signal from the demodulation section, the demodulated signal being subjected to an application of a reliability determination result of the reliability determining section.
摘要翻译： 一种用于使用多个载波接收频分多路传输信号的频分复用传输信号接收装置包括：估计部分，估计在接收信号已被变换为频域信号之后的接收信号的传递函数; 解调部，根据由所述估计部估计出的传递函数解调所述接收信号; 多个变化检测部，基于由所述估计部估计的传递函数，使用多种不同的变化检测方法进行变动检测; 可靠性判定部，基于多个变化检测部的变动检测结果的组合的结果来确定可靠性; 以及校正部分，对来自解调部分的解调信号进行纠错，对该解调信号进行可靠性确定部分的可靠性确定结果的应用。
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公开(公告)号：US06896602B2
公开(公告)日：2005-05-24
申请号：US10398600
申请日：2002-05-08
IPC分类号： B24B37/04 , B24B37/30 , B24B37/32 , H01L21/304 , H01L21/683 , B24B47/02
CPC分类号： B24B37/32
摘要： Disclosed is a wafer-holding ring adapted for holding a wafer on a chemical mechanical polishing apparatus, which can prevent damage to a wafer, possesses excellent abrasion resistance, and can reduce replacement work and consequently can realize mass production of polished wafers. In the wafer-holding ring for a chemical mechanical polishing apparatus, the surface of the wafer-holding ring at least in its portion, which can come into contact with a wafer, is formed of a resin composition comprising not less than 30% by weight of polybenzimidazole.
摘要翻译： 公开了一种适于将晶片保持在化学机械抛光装置上的晶片保持环，其可以防止对晶片的损坏，具有优异的耐磨性，并且可以减少更换工作，并因此可以实现抛光晶片的批量生产。 在用于化学机械抛光装置的晶片保持环中，晶片保持环的至少在其与晶片接触的部分的表面由包含不小于30重量％的树脂组合物形成 的聚苯并咪唑。
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公开(公告)号：US20110268169A1
公开(公告)日：2011-11-03
申请号：US13033669
申请日：2011-02-24
申请人： Jun Mitsugi , Masami Aizawa
发明人： Jun Mitsugi , Masami Aizawa
CPC分类号： H04L25/03159 , H04H40/27 , H04L25/0212 , H04L2025/03414 , H04L2025/03624
摘要： An equalization apparatus configured to receive a digitally modulated single carrier signal and perform multipath equalization in a frequency domain, including a frequency domain conversion unit which converts a received signal to a frequency domain signal, a channel estimation unit configured to estimate a channel response in a frequency domain from the received signal, an equalization weight calculation unit which calculates an equalization weight from the channel estimate value in the frequency domain, an equalization filter which receives the frequency domain signal from the frequency domain conversion unit and the equalization weight from the equalization weight calculation unit and performs equalization processing and a time domain conversion unit which converts the frequency domain signal from the equalization filter to a time domain signal, wherein the equalization weight calculation unit includes a power calculation unit, a power value correction unit, a complex conjugate generator and a divider.
摘要翻译： 一种均衡装置，被配置为接收数字调制单载波信号并在频域中执行多径均衡，包括将接收信号转换为频域信号的频域转换单元，被配置为估计信道响应的信道估计单元 来自接收信号的频域，均衡权重计算单元，其从频域中的信道估计值计算均衡权重;均衡滤波器，其从频域转换单元接收频域信号，以及来自均衡权重的均衡权重 计算单元并执行均衡处理，以及时域转换单元，其将来自均衡滤波器的频域信号转换为时域信号，其中均衡权重计算单元包括功率计算单元，功率值校正单元，复共轭基因 骑士和分隔线。
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