公开(公告)号：US09160600B2

公开(公告)日：2015-10-13

申请号：US13381114

申请日：2010-07-15

申请人： Riichi Kudo ,  Takayuki Kobayashi ,  Koichi Ishihara ,  Yasushi Takatori ,  Hideyuki Nosaka ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida

发明人： Riichi Kudo ,  Takayuki Kobayashi ,  Koichi Ishihara ,  Yasushi Takatori ,  Hideyuki Nosaka ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida

IPC分类号： H04B1/10 ,  H04L27/26 ,  H04L25/03

CPC分类号： H04L27/2672 ,  H04L25/03159 ,  H04L27/2633 ,  H04L27/265 ,  H04L27/266 ,  H04L2025/03414

摘要： A frequency domain multiplexed signal receiving method which decodes received signals that are multiplexed in a frequency domain, includes: a digital signal acquisition step of acquiring digital signals from the received signals that are multiplexed in the frequency domain; an offset discrete Fourier transform step of applying an offset discrete Fourier transform to odd discrete point numbers based on the acquired digital signals; and a decode step of decoding frequency domain digital signals in the frequency domain obtained by the offset discrete Fourier transform, and that are the frequency domain digital signals of one or more frequency channels.

摘要翻译： 一种频域复用信号接收方法，对在频域中被复用的接收信号进行解码，包括：数字信号获取步骤，从在频域中复用的接收信号中获取数字信号; 偏移离散傅立叶变换步骤，基于所获取的数字信号将偏移离散付里叶变换应用于奇数离散点数; 以及解码步骤，对通过偏移离散付里叶变换获得的频域中的频域数字信号进行解码，并且其是一个或多个频率信道的频域数字信号。

公开(公告)号：US08929750B2

公开(公告)日：2015-01-06

申请号：US13318757

申请日：2010-05-18

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

IPC分类号： H04B10/06 ,  H04B10/2513 ,  H04B10/079 ,  H04B10/556 ,  H04B10/61 ,  H04L7/027

CPC分类号： H04B10/50 ,  H04B10/07951 ,  H04B10/2513 ,  H04B10/556 ,  H04B10/616 ,  H04B10/6161 ,  H04L7/027

摘要： To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies.

摘要翻译： 为了使基于使用光信号的相干检测的通信系统中的信号位置检测，频率偏移补偿，时钟偏移补偿和色散量估计，即使在到达时间上具有很大偏移的信号，这取决于由于 色散。 光信号发送装置产生具有集中在两个或更多个特定频率上的功率的特定频带信号，并发送包括特定频带信号的信号。 光信号接收装置将接收到的信号转换为数字信号，检测来自转换的数字信号的特定频带信号的位置，估计检测到的特定频带信号的频率位置，并检测光信号接收装置 和光信号发送装置。 此外，光信号接收装置从特定频带信号的估计频率位置之间的间隔检测光信号接收装置和光信号发送装置之间的时钟偏移。 此外，光信号接收装置估计检测到的特定频带信号的时间位置，并且根据与不同频率对应的特定频带信号的时间位置之间的差来检测色散量。

公开(公告)号：US08897163B2

公开(公告)日：2014-11-25

申请号：US13583340

申请日：2011-03-10

申请人： Tomoki Murakami ,  Riichi Kudo ,  Takeo Ichikawa ,  Yasushi Takatori ,  Munehiro Matsui ,  Yusuke Asai ,  Masato Mizoguchi

发明人： Tomoki Murakami ,  Riichi Kudo ,  Takeo Ichikawa ,  Yasushi Takatori ,  Munehiro Matsui ,  Yusuke Asai ,  Masato Mizoguchi

IPC分类号： G01R31/08 ,  H04B5/00 ,  H04B7/04 ,  H04W72/08 ,  H04B17/00 ,  H04W52/24 ,  H04W72/04

CPC分类号： H04W72/082 ,  H04B5/00 ,  H04B7/0452 ,  H04B17/345 ,  H04L5/0055 ,  H04W52/243 ,  H04W72/0453

摘要： Provided are a wireless communication method, a base station, a wireless communication system and a communication apparatus whereby an interference power is calculated from an estimated propagation channel estimation result and the transmission power is controlled based on the interference power or the interference is suppressed by controlling the directivity, thereby increasing the transmission capacity. A propagation channel estimation circuit performs propagation channel estimation from a response signal transmitted from a terminal station and estimates a propagation channel estimation result. An interference power calculation circuit measures each interference power from a signal of each sub-carrier received by each of wireless units, and calculates an interference power for each sub-carrier from the propagation channel estimation result estimated by the propagation channel estimation circuit. When the calculated interference power is equal to or more than a predetermined threshold, an interference suppression signal generation circuit changes the transmission power and generates an interference suppression signal.

摘要翻译： 提供了一种无线通信方法，基站，无线通信系统和通信装置，由此根据估计的传播路径估计结果计算干扰功率，并且基于干扰功率来控制发送功率，或者通过控制来抑制干扰 方向性，从而增加传输能力。 传播路径估计电路根据从终端发送的响应信号进行传播路径估计，并估计传播路径估计结果。 干扰功率计算电路根据由每个无线单元接收的每个子载波的信号来测量每个干扰功率，并且根据由传播信道估计电路估计的传播路径估计结果来计算每个副载波的干扰功率。 当所计算的干扰功率等于或大于预定阈值时，干扰抑制信号产生电路改变发射功率并产生干扰抑制信号。

公开(公告)号：US08855485B2

公开(公告)日：2014-10-07

申请号：US13640114

申请日：2011-04-14

申请人： Tadao Nakagawa ,  Yasushi Takatori ,  Riichi Kudo ,  Munehiro Matsui ,  Koichi Ishihara ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto

发明人： Tadao Nakagawa ,  Yasushi Takatori ,  Riichi Kudo ,  Munehiro Matsui ,  Koichi Ishihara ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto

IPC分类号： H04B10/08 ,  H04J11/00 ,  H01Q17/00 ,  H04L27/26

CPC分类号： H04L27/2657 ,  H04L27/2676 ,  H04L27/2684

摘要： When a circuit that calculates a frequency offset using a shape of a frequency spectrum is implemented by hardware, the circuit size can be reduced. A frequency offset estimating method for estimating the difference between a carrier frequency of a reception signal and the frequency of an output signal of a local oscillator includes performing a discrete Fourier transform on a reception signal previously sampled at a predetermined sampling frequency and outputting a frequency spectrum with a plurality of frequency components, calculating an average power of the frequency spectrum, calculating a threshold by adding a predetermined value to the average power or power obtained by multiplying the average power by a constant, performing 1-bit quantization on powers of the frequency components of the frequency spectrum based on the threshold, and calculating a centroid frequency by multiplying frequencies of the frequency components by powers of 1-bit quantized frequency components, calculating the sum of multiplied products, and dividing the sum of the products by the sum of the powers of the 1-bit quantized frequency components of the frequency spectrum.

摘要翻译： 当使用频谱的形状计算频率偏移的电路由硬件实现时，可以减小电路尺寸。 用于估计接收信号的载波频率与本地振荡器的输出信号的频率之间的差异的频率偏移估计方法包括对以预定采样频率预先采样的接收信号执行离散付里叶变换，并输出频谱 具有多个频率分量，计算频谱的平均功率，通过将平均功率或平均功率乘以常数获得的功率相加预定值来计算阈值，对频率的功率执行1比特量化 基于阈值的频谱的分量，并且通过将频率分量的频率乘以1比特量化频率分量的功率来计算质心频率，计算乘积的总和，并将乘积的和除以 1位量化频率分量的功率 频谱。

公开(公告)号：US08787769B2

公开(公告)日：2014-07-22

申请号：US13380432

申请日：2010-07-14

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Shogo Yamanaka

IPC分类号： H04B10/00 ,  H04B10/06

CPC分类号： H04B10/0775 ,  H04B3/06 ,  H04B10/25133

摘要： In order to compensate for chromatic dispersion caused by optical fiber transmission in a communication system with coherent detection using optical signals, specific frequency band signals are used to enable estimation of a chromatic dispersion value. The chromatic dispersion value calculating apparatus is provided with: a signal distributing circuit which distributes, into a plurality of signal sequences, an electrical digital signal converted from received optical signals of an optical signal transmitted by an optical signal transmitting apparatus, in which a known signal with concentrated frequency components of a plurality of specific frequencies is appended to a signal generated from a transmission data sequence; a plurality of frequency band pass filter circuits, each of which separating only each of a plurality of specific frequency components in which the known signal is included from each of the signal sequences distributed by the signal distributing circuit, and passing each of the specific frequency components therethrough; a plurality of power calculating circuits which are provided so as to correspond respectively to the plurality of frequency band pass filter circuits and which calculate power values of signals output from the corresponding frequency band pass filter circuits; a delay time calculating circuit which detects times at which power has the maximum value or times at which the power exceeds a predetermined threshold value, respectively from signal sequences of the power values output from the plurality of power calculating circuits, and which compares the detected times; and a chromatic dispersion value calculating circuit which calculates a chromatic dispersion value based on a comparison result of the times by the delay time calculating circuit.

摘要翻译： 为了补偿在使用光信号的相干检测的通信系统中由光纤传输引起的色散，使用特定的频带信号来使得能够估计色散值。 色散值计算装置具有：信号分配电路，其将由光信号发送装置发送的光信号的接收光信号转换成的数字信号分配成多个信号序列，其中已知信号 将多个特定频率的集中频率分量附加到从发送数据序列生成的信号上; 多个频带滤波器电路，每个频带通滤波器电路仅分离由信号分配电路分配的每个信号序列中包含已知信号的多个特定频率分量中的每一个，并且使每个特定频率分量 通过 多个功率计算电路，被设置为分别对应于所述多个频带滤波器电路，并且计算从相应的频带滤波器电路输出的信号的功率值; 延迟时间计算电路，分别从多个功率计算电路输出的功率值的信号序列中分别检测功率达到功率超过预定阈值的最大值或多次的时间，并且将延迟时间计算电路 ; 以及色散值计算电路，其基于延迟时间计算电路的时间的比较结果来计算色散值。

公开(公告)号：US20120070159A1

公开(公告)日：2012-03-22

申请号：US13318757

申请日：2010-05-18

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Shogo Yamanaka ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Eiji Yoshida ,  Tadao Nakagawa

IPC分类号： H04B10/04 ,  H04J14/02 ,  H04B10/06 ,  H04B1/69

CPC分类号： H04B10/50 ,  H04B10/07951 ,  H04B10/2513 ,  H04B10/556 ,  H04B10/616 ,  H04B10/6161 ,  H04L7/027

摘要： To enable signal position detection, frequency offset compensation, clock offset compensation, and chromatic dispersion amount estimation in a communication system based on coherent detection using an optical signal, even on a signal having a great offset in an arrival time depending on a frequency due to chromatic dispersion. An optical signal transmitting apparatus generates specific frequency band signals having power concentrated on two or more specific frequencies and transmits a signal including the specific frequency band signals. An optical signal receiving apparatus converts a received signal into a digital signal, detects positions of the specific frequency band signals from the converted digital signal, estimates frequency positions of the detected specific frequency band signals, and detects a frequency offset between an optical signal receiving apparatus and an optical signal transmitting apparatus. Moreover, the optical signal receiving apparatus detects a clock offset between the optical signal receiving apparatus and the optical signal transmitting apparatus from an interval between the estimated frequency positions of the specific frequency band signals. Furthermore, the optical signal receiving apparatus estimates temporal positions of the detected specific frequency band signals and detects a chromatic dispersion amount from a difference between the temporal positions of the specific frequency band signals corresponding to different frequencies.

摘要翻译： 为了使基于使用光信号的相干检测的通信系统中的信号位置检测，频率偏移补偿，时钟偏移补偿和色散量估计，即使在到达时间上具有很大偏移的信号，这取决于由于 色散。 光信号发送装置产生具有集中在两个或更多个特定频率上的功率的特定频带信号，并发送包括特定频带信号的信号。 光信号接收装置将接收到的信号转换为数字信号，检测来自转换的数字信号的特定频带信号的位置，估计检测到的特定频带信号的频率位置，并检测光信号接收装置 和光信号发送装置。 此外，光信号接收装置从特定频带信号的估计频率位置之间的间隔检测光信号接收装置和光信号发送装置之间的时钟偏移。 此外，光信号接收装置估计检测到的特定频带信号的时间位置，并且根据与不同频率对应的特定频带信号的时间位置之间的差来检测色散量。

公开(公告)号：US20110129041A1

公开(公告)日：2011-06-02

申请号：US12994365

申请日：2009-06-19

申请人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Eiichi Yamada ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Hideyuki Nosaka

发明人： Koichi Ishihara ,  Takayuki Kobayashi ,  Riichi Kudo ,  Yasushi Takatori ,  Munehiro Matsui ,  Masato Mizoguchi ,  Akihide Sano ,  Eiichi Yamada ,  Etsushi Yamazaki ,  Yutaka Miyamoto ,  Hideyuki Nosaka

IPC分类号： H04L27/06

CPC分类号： H04B7/084 ,  H04B7/0845 ,  H04L2027/0067

摘要： A receiver device receives a signal inputted to one or a plurality of ports as a plurality of received signals, and includes: a phase offset estimating unit that, on the basis of a unique word of each signal block contained in said received signal, estimates the phase offset, and a phase offset compensating unit that, on the basis of a phase offset estimated by said phase offset estimating unit, compensates the phase offset; the receiver device uses a known signal component (unique word) contained in a frequency-domain equalized signal to compensate the phase offset, whereby it compensates complex phase offset fluctuation, and estimates the phase offset of a signal obtained at each port.

摘要翻译： 接收机装置接收输入到一个或多个端口的信号作为多个接收信号，并且包括：相位偏移估计单元，其基于包含在所述接收信号中的每个信号块的唯一字，估计出 以及相位偏移补偿单元，其基于由所述相位偏移估计单元估计的相位偏移补偿相位偏移; 接收机设备使用包含在频域均衡信号中的已知信号分量（唯一字）来补偿相位偏移，从而补偿复相位偏移波动，并且估计在每个端口处获得的信号的相位偏移。

公开(公告)号：US08781029B2

公开(公告)日：2014-07-15

申请号：US13701963

申请日：2011-06-17

申请人： Tadao Nakagawa ,  Munehiro Matsui ,  Koichi Ishihara ,  Riichi Kudo ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto ,  Yasushi Takatori

发明人： Tadao Nakagawa ,  Munehiro Matsui ,  Koichi Ishihara ,  Riichi Kudo ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto ,  Yasushi Takatori

IPC分类号： H03K9/10 ,  H04L17/14

CPC分类号： H04L27/14 ,  H04B7/10 ,  H04B10/611 ,  H04B10/6164 ,  H04B17/327 ,  H04L27/2659 ,  H04L2027/0026 ,  H04L2027/0032 ,  H04L2027/0046

摘要： Provided is a frequency offset estimation apparatus that appropriately estimates and compensates for a frequency offset of a received signal when estimating the frequency offset which is the difference between a carrier frequency of the received signal and the frequency of an output signal of a local oscillator. The frequency offset estimation apparatus converts the received signal sampled in advance with a predetermined sampling frequency into a frequency spectrum having N frequency components, limits a frequency band of negative frequency components from 1 to N/2 of the frequency spectrum and a frequency band of positive frequency components from N/2+1 to N of the frequency spectrum, calculates the sum of the squares of the positive frequency components of the frequency spectrum that have been subjected to frequency band limitation and the sum of the squares of the negative frequency components of the frequency spectrum that have been subjected to frequency band limitation to calculate power of the positive frequency components and power of the negative frequency components, and cyclically shifts all frequency components of the frequency spectrum in a frequency domain until the absolute value of a power difference between the power of the positive frequency components and the power of the negative frequency components is less than or equal to a predetermined threshold value, and estimates the frequency offset based on a shift amount until the absolute value is less than or equal to the threshold value.

摘要翻译： 提供一种频率偏移估计装置，其在估计作为接收信号的载波频率与本地振荡器的输出信号的频率之间的差的频率偏移时，适当地估计和补偿接收信号的频率偏移。 频率偏移估计装置将预先采样的接收信号以预定的采样频率转换成具有N个频率分量的频谱，将频谱的负频率分量的频带从1到N / 2限制，并且频带为正 频率分量从频谱的N / 2 + 1到N的频率分量计算已经经受频带限制的频谱的正频率分量的平方和的和的频率分量的平方和之和 已经进行了频带限制的频谱，以计算正频率分量的功率和负频率分量的功率，并且循环移位频域中的频谱的所有频率分量，直到频域中的频差的绝对值 正频率分量的功率和ne的功率 同步频率分量小于或等于预定阈值，并且基于偏移量来估计频率偏移，直到绝对值小于或等于阈值。

公开(公告)号：US20130070874A1

公开(公告)日：2013-03-21

申请号：US13701963

申请日：2011-06-17

申请人： Tadao Nakagawa ,  Munehiro Matsui ,  Koichi Ishihara ,  Riichi Kudo ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto ,  Yasushi Takatori

发明人： Tadao Nakagawa ,  Munehiro Matsui ,  Koichi Ishihara ,  Riichi Kudo ,  Takayuki Kobayashi ,  Etsushi Yamazaki ,  Akihide Sano ,  Eiji Yoshida ,  Masato Mizoguchi ,  Yutaka Miyamoto ,  Yasushi Takatori

IPC分类号： H04L27/14

CPC分类号： H04L27/14 ,  H04B7/10 ,  H04B10/611 ,  H04B10/6164 ,  H04B17/327 ,  H04L27/2659 ,  H04L2027/0026 ,  H04L2027/0032 ,  H04L2027/0046

摘要： Provided is a frequency offset estimation apparatus that appropriately estimates and compensates for a frequency offset of a received signal when estimating the frequency offset which is the difference between a carrier frequency of the received signal and the frequency of an output signal of a local oscillator. The frequency offset estimation apparatus converts the received signal sampled in advance with a predetermined sampling frequency into a frequency spectrum having N frequency components, limits a frequency band of negative frequency components from 1 to N/2 of the frequency spectrum and a frequency band of positive frequency components from N/2+1 to N of the frequency spectrum, calculates the sum of the squares of the positive frequency components of the frequency spectrum that have been subjected to frequency band limitation and the sum of the squares of the negative frequency components of the frequency spectrum that have been subjected to frequency band limitation to calculate power of the positive frequency components and power of the negative frequency components, and cyclically shifts all frequency components of the frequency spectrum in a frequency domain until the absolute value of a power difference between the power of the positive frequency components and the power of the negative frequency components is less than or equal to a predetermined threshold value, and estimates the frequency offset based on a shift amount until the absolute value is less than or equal to the threshold value.

摘要翻译： 提供一种频率偏移估计装置，其在估计作为接收信号的载波频率与本地振荡器的输出信号的频率之间的差的频率偏移时，适当地估计和补偿接收信号的频率偏移。 频率偏移估计装置将预先采样的接收信号以预定的采样频率转换成具有N个频率分量的频谱，将频谱的负频率分量的频带从1到N / 2限制，并且频带为正 频率分量从频谱的N / 2 + 1到N的频率分量计算已经经受频带限制的频谱的正频率分量的平方和的和的频率分量的平方和之和 已经经过频带限制的频谱，以计算正频率分量的功率和负频率分量的功率，并且循环移位频域中的频谱的所有频率分量，直到频域中的功率差的绝对值 正频率分量的功率和ne的功率 同步频率分量小于或等于预定阈值，并且基于偏移量来估计频率偏移，直到绝对值小于或等于阈值。

公开(公告)号：US20120106618A1

公开(公告)日：2012-05-03

申请号：US13381114

申请日：2010-07-15

申请人： Riichi Kudo ,  Takayuki Kobayashi ,  Koichi Ishihara ,  Yasushi Takatori ,  Hideyuki Nosaka ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida

发明人： Riichi Kudo ,  Takayuki Kobayashi ,  Koichi Ishihara ,  Yasushi Takatori ,  Hideyuki Nosaka ,  Munehiro Matsui ,  Masato Mizoguchi ,  Tadao Nakagawa ,  Etsushi Yamazaki ,  Akihide Sano ,  Yutaka Miyamoto ,  Eiji Yoshida

IPC分类号： H04L27/06 ,  H04L27/01

CPC分类号： H04L27/2672 ,  H04L25/03159 ,  H04L27/2633 ,  H04L27/265 ,  H04L27/266 ,  H04L2025/03414

摘要： A frequency domain multiplexed signal receiving method which decodes received signals that are multiplexed in a frequency domain, includes: a digital signal acquisition step of acquiring digital signals from the received signals that are multiplexed in the frequency domain; an offset discrete Fourier transform step of applying an offset discrete Fourier transform to odd discrete point numbers based on the acquired digital signals; and a decode step of decoding frequency domain digital signals in the frequency domain obtained by the offset discrete Fourier transform, and that are the frequency domain digital signals of one or more frequency channels.

摘要翻译： 一种频域复用信号接收方法，对在频域中被复用的接收信号进行解码，包括：数字信号获取步骤，从在频域中复用的接收信号中获取数字信号; 偏移离散傅立叶变换步骤，基于所获取的数字信号将偏移离散付里叶变换应用于奇数离散点数; 以及解码步骤，对通过偏移离散付里叶变换获得的频域中的频域数字信号进行解码，并且其是一个或多个频率信道的频域数字信号。