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公开(公告)号：US20070195909A1
公开(公告)日：2007-08-23
申请号：US11443072
申请日：2006-05-31
IPC分类号： H04B15/00
CPC分类号： H04L27/2624 , H03G7/00 , H03G11/00
摘要： As in a conventional technology, a hard clipping process and a filtering process are performed on a transmission signal. An original transmission signal is subtracted from a signal on which the processes have been performed, and an inverse sign signal to the suppressed signal is retrieved. By giving a gain to the signal, and adding up to the original transmission signal, a peak voltage is suppressed. The gain can be a ratio of a difference signal between a hard clipped signal and an original transmission signal to a signal of suppression of a filtered signal from the original transmission signal, or a value determined by a simulation depending on the cutoff frequency of a low pass filter used in the filtering process.
摘要翻译： 像传统技术一样，对发送信号执行硬削波处理和滤波处理。 从已经执行了处理的信号中减去原始发送信号，并且检索到抑制信号的逆信号。 通过给信号增益，并加上原始的传输信号，抑制峰值电压。 增益可以是硬削波信号和原始发送信号之间的差分信号与来自原始发送信号的滤波信号的抑制信号的比率，或者通过根据低频的截止频率的模拟确定的值 过滤器用于过滤过程。
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公开(公告)号：US20050238114A1
公开(公告)日：2005-10-27
申请号：US10945316
申请日：2004-09-20
CPC分类号： H04L27/0014 , H03C2200/0058 , H03C2200/0079 , H04L27/364 , H04L2027/0016 , H04L2027/0018
摘要： A disclosed quadrature modulation system inputs an inphase signal component and an orthogonal signal component, and outputs an output signal that is quadrature modulated by a quadrature modulator. The quadrature modulation system calculates a first cumulative total based on the inphase signal component input into the quadrature modulator and an inphase signal component of a feedback signal obtained from the output signal. The quadrature modulation system calculates a second cumulative total based on the orthogonal signal component input into the quadrature modulator and an orthogonal signal component of the feedback signal. Based on the first and the second cumulative totals, a time difference between the inphase signal component and the orthogonal signal component is determined. The inphase signal component and the orthogonal signal component to be provided to the quadrature modulator are adjusted based on the time difference such that the time difference is compensated for.
摘要翻译： 所公开的正交调制系统输入同相信号分量和正交信号分量，并输出由正交调制器正交调制的输出信号。 正交调制系统基于输入到正交调制器的同相信号分量和从输出信号获得的反馈信号的同相信号分量来计算第一累积总数。 正交调制系统基于输入到正交调制器的正交信号分量和反馈信号的正交信号分量来计算第二累积总数。 基于第一和第二累积总数，确定同相信号分量和正交信号分量之间的时间差。 基于时间差来调整要提供给正交调制器的同相信号分量和正交信号分量，以便补偿时间差。
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公开(公告)号：US20050219118A1
公开(公告)日：2005-10-06
申请号：US10920994
申请日：2004-08-18
CPC分类号： H04B17/0085 , H01Q3/267 , H04B17/12
摘要： Disclosed is a phase calibration method for inserting a calibration signal (SC) into main signals (SM1 to SMn) of a plurality of branches in turn, estimating the phase characteristic of an analog circuit to which a respective one of the main signals is input and calibrating the phase of each main signal. The method includes steps of outputting a first combined signal obtained by combining output signals from the analog circuits (62a to 62n) in all branches, outputting a second combined signal obtained by combining the main signals in all branches, extracting the calibration signal by removing the second combined signal from the first combined signal in a calibration signal extracting unit (64), estimating the phase characteristics of the analog circuits, to which the main signals having the inserted calibration signal are input, based upon a change in phase of the calibration signal, and subjecting the main signals to phase adjustment having characteristics that are opposite the phase characteristics.
摘要翻译： 公开了一种用于依次将多个分支的主信号（SM 1至SM n）插入校准信号（SC）的相位校准方法，估计相应一个主信号被输入的模拟电路的相位特性 并校准每个主信号的相位。 该方法包括以下步骤：输出通过在所有分支中组合来自模拟电路（62a至62n）的输出信号而获得的第一组合信号，输出通过组合所有分支中的主信号而获得的第二组合信号，通过 在校准信号提取单元（64）中从所述第一组合信号中去除所述第二组合信号，基于所述校准信号提取单元（64）的相位变化估计输入了具有插入的校准信号的所述主信号的所述模拟电路的相位特性 校准信号，并对主信号进行相位调整，具有与相位特性相反的特性。
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公开(公告)号：US08605815B2
公开(公告)日：2013-12-10
申请号：US12499270
申请日：2009-07-08
IPC分类号： H04L25/03
CPC分类号： H04B1/0475 , H03F1/3247 , H03F3/24
摘要： A delay amount estimating apparatus includes a delay value search section that searches for a first delay value smaller than a delay setting value at which a given correlation value between an input signal and a feedback signal is provided, and also for a second delay value greater than the delay setting value, the feedback signal coming from a signal processing apparatus that applies signal processing on the input signal, wherein respective correlation values of the first delay value and the second delay value satisfy a given condition; and a delay estimating section that estimates a delay amount of the feedback signal relative to the input signal based on the first delay value and the second delay value.
摘要翻译： 延迟量估计装置包括延迟值搜索部分，其搜索小于提供输入信号和反馈信号之间的给定相关值的延迟设定值的第一延迟值，以及大于 延迟设定值，来自对输入信号进行信号处理的信号处理装置的反馈信号，其中第一延迟值和第二延迟值的各自的相关值满足给定条件; 以及延迟估计部，其基于所述第一延迟值和所述第二延迟值，估计所述反馈信号相对于所述输入信号的延迟量。
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公开(公告)号：US08442157B2
公开(公告)日：2013-05-14
申请号：US12794124
申请日：2010-06-04
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
IPC分类号： H04B1/38
CPC分类号： H04L27/2337
摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.
摘要翻译： 无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。
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公开(公告)号：US08254857B2
公开(公告)日：2012-08-28
申请号：US12874453
申请日：2010-09-02
IPC分类号： H01Q11/12
CPC分类号： H03F1/0222 , H03F1/32 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/504
摘要： A radio communication device includes a power amplifier to amplify a transmit signal, a control unit to generate a voltage control signal for defining power to be supplied to the power amplifier in accordance with a conversion curve expressed using a polynomial series based on an envelope signal obtained from the transmit signal and determine the polynomial series based on an efficiency of the power amplifier, and a power source unit to supply the power to the power amplifier based on the voltage control signal, wherein the control unit divides an amplitude range of the envelope signal on the conversion curve into a plurality of sections and determines the polynomial series based on at least one of the plurality of sections.
摘要翻译： 一种无线电通信装置，包括放大发射信号的功率放大器，控制单元，根据获得的包络信号，根据使用多项式序列表示的转换曲线，产生用于定义要提供给功率放大器的功率的电压控制信号 根据所述发送信号，根据所述功率放大器的效率确定所述多项式系列;以及电源单元，其基于所述电压控制信号向所述功率放大器供电，其中，所述控制单元将所述包络信号的幅度范围 将所述转换曲线转换成多个部分，并且基于所述多个部分中的至少一个来确定所述多项式序列。
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公开(公告)号：US20110053532A1
公开(公告)日：2011-03-03
申请号：US12874453
申请日：2010-09-02
IPC分类号： H04W88/02
CPC分类号： H03F1/0222 , H03F1/32 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/504
摘要： A radio communication device includes a power amplifier to amplify a transmit signal, a control unit to generate a voltage control signal for defining power to be supplied to the power amplifier in accordance with a conversion curve expressed using a polynomial series based on an envelope signal obtained from the transmit signal and determine the polynomial series based on an efficiency of the power amplifier, and a power source unit to supply the power to the power amplifier based on the voltage control signal, wherein the control unit divides an amplitude range of the envelope signal on the conversion curve into a plurality of sections and determines the polynomial series based on at least one of the plurality of sections.
摘要翻译： 一种无线电通信装置，包括放大发射信号的功率放大器，控制单元，根据获得的包络信号，根据使用多项式序列表示的转换曲线，产生用于定义要提供给功率放大器的功率的电压控制信号 根据所述发送信号，根据所述功率放大器的效率确定所述多项式系列;以及电源单元，其基于所述电压控制信号向所述功率放大器供电，其中，所述控制单元将所述包络信号的幅度范围 将所述转换曲线转换成多个部分，并且基于所述多个部分中的至少一个来确定所述多项式序列。
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公开(公告)号：US20110053531A1
公开(公告)日：2011-03-03
申请号：US12850998
申请日：2010-08-05
IPC分类号： H04W88/02
CPC分类号： H03G3/3036 , H04B2001/0416
摘要： A disclosed transmission device includes a voltage control signal generating unit configured to generate a first voltage control signal from a transmission signal, an amplifier configured to amplify the transmission signal in response to the first voltage control signal, a first timing adjusting unit configured to adjust a control timing for the first voltage control signal, and a control timing setting unit configured to set the control timing adjusted by the first timing adjusting unit based on the output signal from the amplifier and the transmission signal.
摘要翻译： 所公开的发送装置包括：电压控制信号生成部，被配置为从发送信号生成第一电压控制信号，被配置为响应于第一电压控制信号放大发送信号的放大器;第一定时调整部， 第一电压控制信号的控制定时，以及控制定时设定单元，被配置为基于来自放大器的输出信号和发送信号来设定由第一定时调整单元调整的控制定时。
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公开(公告)号：US07860185B2
公开(公告)日：2010-12-28
申请号：US12333576
申请日：2008-12-12
CPC分类号： H03F1/3247 , H03F1/3241 , H03F2200/165 , H03F2200/451 , H03F2201/3233
摘要： A distortion compensating apparatus has an adaptive distortion compensating unit to compensate nonlinear distortion by controlling an input signal of a nonlinear distortion circuit by using an adaptive algorithm so as to reduce an error between a reference signal and a feedback signal from the nonlinear distortion circuit; and an adaptive equalizer connected between the adaptive distortion compensating unit and the nonlinear distortion circuit or provided in front of the adaptive distortion compensating unit. The adaptive equalizer includes a digital filter to form an amplitude characteristic and a phase characteristic of the input signal on the basis of a filter coefficient group that is set to the digital filter; a memory to hold in advance the filter coefficient group; and a control unit to control reading of the filter coefficient group from the memory on the basis of the input signal and the feedback signal.
摘要翻译： 失真补偿装置具有自适应失真补偿单元，用于通过使用自适应算法来控制非线性失真电路的输入信号来补偿非线性失真，以便减少来自非线性失真电路的参考信号和反馈信号之间的误差; 以及连接在自适应失真补偿单元和非线性失真电路之间或设置在自适应失真补偿单元前面的自适应均衡器。 自适应均衡器包括数字滤波器，用于基于设置到数字滤波器的滤波器系数组来形成输入信号的幅度特性和相位特性; 提前保存滤波器系数组的存储器; 以及控制单元，其基于输入信号和反馈信号来控制从存储器读取滤波器系数组。
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公开(公告)号：US07804914B2
公开(公告)日：2010-09-28
申请号：US12076825
申请日：2008-03-24
CPC分类号： H04B1/707 , H04B2201/70706 , H04L5/0021 , H04L27/2624
摘要： A radio transmission apparatus executing peak suppression processing to an input signal in at least two stages, includes a first peak detector detecting a first peak, a maximum peak among peaks exceeding a first threshold, for a plurality of envelopes included in a predetermined input signal section; a second peak detector detecting a second peak exceeding a second threshold, on the basis of each input signal envelope; a first peak suppression unit suppressing the predetermined input signal section to the limit of a first level based on the first peak; a modulation signal generation unit generating a modulated signal modulated from the input signal suppressed by the first peak suppression unit; and a second peak suppression unit suppressing the second peak to the limit of a second level by each modulated signal envelope based on the first level and the second peak.
摘要翻译： 对至少两级对输入信号执行峰值抑制处理的无线发送装置包括检测包括在预定输入信号部分中的多个信封的第一峰值，检测超过第一阈值的峰值中的最大峰值的第一峰值检测器 ; 基于每个输入信号包络检测第二峰值检测器，检测超过第二阈值的第二峰值; 第一峰值抑制单元，基于第一峰值将预定输入信号部分抑制到第一电平的极限; 调制信号生成单元，生成由所述第一峰值抑制单元抑制的输入信号调制的调制信号; 以及第二峰值抑制单元，其基于第一电平和第二峰值，通过每个调制信号包络将第二峰值抑制到第二电平的极限。
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