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公开(公告)号：US09014285B2
公开(公告)日：2015-04-21
申请号：US14125039
申请日：2011-09-05
申请人： Yukihiro Kadota , Takashi Fujiwara
发明人： Yukihiro Kadota , Takashi Fujiwara
CPC分类号： H04L27/38 , H04L27/2665 , H04L27/2676
摘要： An object of the present invention is to provide a receiving apparatus and a receiving method capable of preventing phase rotation of a signal after FFT from occurring on a frequency domain. Further, the receiving apparatus according to the present invention is provided with: a window control unit configured to control a position of an FFT window in which FFT is performed to the time domain signal, and output FFT data corresponding to the FFT window; a signal delaying unit configured to generate, from the time domain signal, a plurality of delay signals with different delay amounts; and a signal switching unit having a switch for outputting by switching between two of the time domain signal and the plurality of delay signals based on a predetermined switch timing, the signal switching unit being configured to output the FFT data including the output signal of the switch.
摘要翻译： 本发明的目的是提供一种能够防止FFT之后的信号在频域上发生相位旋转的接收装置和接收方法。 此外，根据本发明的接收装置具有：窗口控制单元，被配置为控制对时域信号执行FFT的FFT窗口的位置，并输出与FFT窗口对应的FFT数据; 信号延迟单元，被配置为从时域信号生成具有不同延迟量的多个延迟信号; 信号切换单元，具有通过基于规定的切换定时在两个时域信号和多个延迟信号之间进行切换而输出的开关，所述信号切换单元被配置为输出包括所述开关的输出信号的FFT数据 。
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公开(公告)号：US20140112416A1
公开(公告)日：2014-04-24
申请号：US14125039
申请日：2011-09-05
申请人： Yukihiro Kadota , Takashi Fujiwara
发明人： Yukihiro Kadota , Takashi Fujiwara
IPC分类号： H04L27/38
CPC分类号： H04L27/38 , H04L27/2665 , H04L27/2676
摘要： An object of the present invention is to provide a receiving apparatus and a receiving method capable of preventing phase rotation of a signal after FFT from occurring on a frequency domain. Further, the receiving apparatus according to the present invention is provided with: a window control unit configured to control a position of an FFT window in which FFT is performed to the time domain signal, and output FFT data corresponding to the FFT window; a signal delaying unit configured to generate, from the time domain signal, a plurality of delay signals with different delay amounts; and a signal switching unit having a switch for outputting by switching between two of the time domain signal and the plurality of delay signals based on a predetermined switch timing, the signal switching unit being configured to output the FFT data including the output signal of the switch.
摘要翻译： 本发明的目的是提供一种能够防止FFT之后的信号在频域上发生相位旋转的接收装置和接收方法。 此外，根据本发明的接收装置具有：窗口控制单元，被配置为控制对时域信号执行FFT的FFT窗口的位置，并输出与FFT窗口对应的FFT数据; 信号延迟单元，被配置为从时域信号生成具有不同延迟量的多个延迟信号; 信号切换单元，具有通过基于规定的切换定时在两个时域信号和多个延迟信号之间进行切换而输出的开关，所述信号切换单元被配置为输出包括所述开关的输出信号的FFT数据 。
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公开(公告)号：US20090041167A1
公开(公告)日：2009-02-12
申请号：US11662606
申请日：2006-05-10
申请人： Yukihiro Kadota , Mitsuru Takeuchi
发明人： Yukihiro Kadota , Mitsuru Takeuchi
CPC分类号： H04L27/2657 , H03G3/3036 , H03G3/3052 , H04L27/2662 , H04L27/2676 , H04L2027/0036 , H04L2027/0095
摘要： In an OFDM receiver with a diversity configuration having a plurality of demodulation modules, to perform FFT window position recovery and clock recovery, the gain values calculated by the AGC units (16, 26) provided in the demodulation modules for adjusting the level of the received signal are supplied to a correlation combiner (35); the correlation combiner (35) multiplies the correlation signals supplied from the correlation detectors (17, 27) in the demodulation modules by coefficients calculated from the gain values, then adds the products to generate a combined correlation signal and supplies it to an FFT window position recovery unit (32) and a clock error detector (33). FFT window position recovery and clock recovery can thus be performed properly without depending on any one demodulation module.
摘要翻译： 在具有多个解调模块的分集配置的OFDM接收机中，为了执行FFT窗口位置恢复和时钟恢复，由设置在解调模块中的AGC单元（16,26）计算出的增益值用于调整所接收的 信号被提供给相关组合器（35）; 相关组合器（35）将从解调模块中的相关检测器（17,27）提供的相关信号乘以从增益值计算的系数，然后将乘积相加以产生组合相关信号，并将其提供给FFT窗口位置 恢复单元（32）和时钟误差检测器（33）。 因此FFT窗口位置恢复和时钟恢复可以正确地执行，而不依赖于任何一个解调模块。
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公开(公告)号：US07839942B2
公开(公告)日：2010-11-23
申请号：US11662606
申请日：2006-05-10
申请人： Yukihiro Kadota , Mitsuru Takeuchi
发明人： Yukihiro Kadota , Mitsuru Takeuchi
CPC分类号： H04L27/2657 , H03G3/3036 , H03G3/3052 , H04L27/2662 , H04L27/2676 , H04L2027/0036 , H04L2027/0095
摘要： In an OFDM receiver with a diversity configuration having a plurality of demodulation modules, to perform FFT window position recovery and clock recovery, the gain values calculated by the AGC units (16, 26) provided in the demodulation modules for adjusting the level of the received signal are supplied to a correlation combiner (35); the correlation combiner (35) multiplies the correlation signals supplied from the correlation detectors (17, 27) in the demodulation modules by coefficients calculated from the gain values, then adds the products to generate a combined correlation signal and supplies it to an FFT window position recovery unit (32) and a clock error detector (33). FFT window position recovery and clock recovery can thus be performed properly without depending on any one demodulation module.
摘要翻译： 在具有多个解调模块的分集配置的OFDM接收机中，为了执行FFT窗口位置恢复和时钟恢复，由设置在解调模块中的AGC单元（16,26）计算出的增益值用于调整所接收的 信号被提供给相关组合器（35）; 相关组合器（35）将从解调模块中的相关检测器（17,27）提供的相关信号乘以从增益值计算的系数，然后将乘积相加以产生组合相关信号，并将其提供给FFT窗口位置 恢复单元（32）和时钟误差检测器（33）。 因此FFT窗口位置恢复和时钟恢复可以正确地执行，而不依赖于任何一个解调模块。
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