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    • 33. 发明授权
    • Radio transmission apparatus having peak suppression function
    • 无线传输装置具有峰值抑制功能
    • US07804914B2
    • 2010-09-28
    • US12076825
    • 2008-03-24
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaHajime HamadaTokuro Kubo
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaHajime HamadaTokuro Kubo
    • H04L27/00H04L25/49
    • H04B1/707H04B2201/70706H04L5/0021H04L27/2624
    • 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.
    • 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。
    • 36. 发明申请
    • Timing adjusting method and timing adjusting apparatus
    • 定时调整方法和定时调整装置
    • US20070159242A1
    • 2007-07-12
    • US11429355
    • 2006-05-05
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaHajime HamadaTokuro Kubo
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaHajime HamadaTokuro Kubo
    • H03D1/00H03L7/00
    • H03C5/00
    • A timing adjusting method detects a phase error between a main signal path from which a transmitting signal is obtained and a control signal path from which a voltage control signal is obtained, based on a to-be-amplified signal that is to be amplified and represents an amplitude or a power of the transmitting signal prior to amplification and a feedback signal that represents an amplitude or a power of the transmitting signal after the amplification, adjusts an amount of delay of at least one of the main signal path and the control signal path so as to mutually cancel the phase error, and amplifies the transmitting signal from the main signal path depending on the voltage control signal from the control signal path. The detecting the phase error may include detecting polarity transition points of a slope of a waveform of the to-be-amplified signal or the feedback signal, and measuring the phase error using the detected polarity transition points.
    • 代表定时调整方法,根据要放大的被放大信号,检测获得发送信号的主信号路径与获得电压控制信号的控制信号路径之间的相位误差, 在放大之前的发送信号的幅度或功率以及表示放大后的发送信号的幅度或功率的反馈信号,调整主信号路径和控制信号路径中的至少一个的延迟量 以便相互抵消相位误差,并且根据来自控制信号路径的电压控制信号放大来自主信号路径的发送信号。 检测相位误差可以包括检测被放大信号或反馈信号的波形的斜率的极性转变点,以及使用检测到的极性转变点来测量相位误差。
    • 40. 发明申请
    • Offset compensation device
    • 偏移补偿装置
    • US20070110183A1
    • 2007-05-17
    • US10568334
    • 2004-03-31
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaTokuro Kubo
    • Kazuo NagataniHiroyoshi IshikawaNobukazu FudabaTokuro Kubo
    • H04L25/49
    • H04L27/364H03C3/406H04L2027/0016H04L2027/0018H04L2027/0067H04L2027/0069
    • In an electronic device having a circuit outputting a vector sum of two quadrature vector signals, an offset compensating device compensates the offset contained in the vector sum. The offset compensating device aims to flexibly adapt to deviation in characteristics and performances and various fluctuations, and to compensate offset stably and accurately. The offset compensating device includes a deviation monitor unit creating a vector signal by A/D-converting the aforementioned vector sum and by quadrature-demodulating it and monitoring the deviation of the DC components superposed on the vector signal, and an adaptive control unit updating the compensation vector determined in advance, based on adaptive algorithm minimizing expectation value of the product of the inner product between an increment vector and the compensation vector, and the latest deviation vector, and adding the compensation vector to an offset vector to be inputted, while being superposed on the input signal, to a circuit.
    • 在具有输出两个正交矢量信号的向量和的电路的电子设备中,偏移补偿装置补偿矢量和中包含的偏移量。 偏移补偿装置旨在灵活适应特性,性能和各种波动的偏差,并且稳定和准确地补偿偏移。 偏移补偿装置包括:偏差监视器单元,通过对前述矢量和进行A / D转换,并对其进行正交解调并监视叠加在矢量信号上的直流分量的偏差来产生矢量信号;以及自适应控制单元, 基于自适应算法,最小化增量向量与补偿向量之间的内积乘积的最终期望值与最新偏差矢量,并将补偿向量加到要输入的偏移向量的预先确定的补偿向量,同时 叠加在输入信号上的电路。