公开(公告)号：US08488695B2

公开(公告)日：2013-07-16

申请号：US12958912

申请日：2010-12-02

申请人： Takashi Yokokawa ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

发明人： Takashi Yokokawa ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

IPC分类号： H04K1/10

CPC分类号： H04L25/02 ,  H04L25/0232 ,  H04L2025/03414

摘要： A receiving apparatus for receiving an orthogonal frequency division multiplexing (OFDM) signal including a frame having one frame length of a plurality of patterns. The apparatus comprises an acquiring section to acquire information regarding a preamble signal from an OFDM signal from a transmitting apparatus; a frame determining section to determine whether the one frame length is short in the frame based on the information regarding the acquired preamble signal; and a time interpolating section to obtain transmission path characteristics by comparing a pilot contained in the preamble signal with a known pilot corresponding to the pilot in a phase of transmission, when the frame determining section determines that the one frame length is short in the frame, and to interpolate a data portion in a time direction based on transmission path characteristics.

摘要翻译： 一种用于接收正交频分多路复用（OFDM）信号的接收装置，包括具有多个模式的一帧长度的帧。 该装置包括：获取部分，从发送装置获取来自OFDM信号的关于前导码信号的信息; 帧确定部分，用于基于关于所获取的前导信号的信息来确定帧中的一个帧长度是否短; 以及时间内插部分，当帧确定部分确定帧中的一个帧长度短时，通过将包含在前导码信号中的导频与对应于传输的相位中的导频的已知导频进行比较来获得传输路径特性， 并且基于传输路径特性在时间方向上内插数据部分。

公开(公告)号：US20110142176A1

公开(公告)日：2011-06-16

申请号：US12958912

申请日：2010-12-02

申请人： Takashi YOKOKAWA ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

发明人： Takashi YOKOKAWA ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

IPC分类号： H04L27/06

CPC分类号： H04L25/02 ,  H04L25/0232 ,  H04L2025/03414

摘要： Disclosed herein is a receiving apparatus for receiving an orthogonal frequency division multiplexing signal, namely, OFDM signal having a frame having one frame length of a plurality of patterns, including: an acquiring section configured to acquire information on a preamble signal from the OFDM signal transmitted from a transmitting apparatus in accordance with an OFDM system; a frame determining section configured to determine whether or not the one frame length is short in the frame based on the information on the preamble signal acquired from the acquiring section; and a time interpolating section configured to obtain transmission path characteristics by comparing a pilot contained in the preamble signal and a known pilot corresponding to the pilot in a phase of transmission with each other when the frame determining section determines that the one frame length is short in the frame, and interpolate a data portion in a time direction based on the transmission path characteristics thus obtained.

摘要翻译： 本发明公开了一种用于接收正交频分复用信号的接收装置，即具有多个模式的一帧长度的帧的OFDM信号，包括：获取部，被配置为从发送的OFDM信号获取关于前导信号的信息 根据OFDM系统的发送装置; 帧确定部分，被配置为基于从获取部分获取的关于前导信号的信息来确定帧中的一个帧长度是否短; 以及时间内插部，被配置为当帧确定部确定一个帧长度短时，通过将包含在前导信号中的导频与在传输相位中的导频对应的已知导频彼此进行比较来获得传输路径特性 并根据所获得的传输路径特性在时间方向内插数据部分。

公开(公告)号：US08363755B2

公开(公告)日：2013-01-29

申请号：US12788398

申请日：2010-05-27

申请人： Suguru Houchi ,  Naoki Yoshimochi ,  Takuya Okamoto ,  Yuken Goto ,  Takashi Yokokawa

发明人： Suguru Houchi ,  Naoki Yoshimochi ,  Takuya Okamoto ,  Yuken Goto ,  Takashi Yokokawa

IPC分类号： H04L27/00

CPC分类号： H04L27/2662 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03159 ,  H04L27/2649 ,  H04L27/2675 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A signal receiving apparatus includes: an acquisition section configured to acquire an Orthogonal Frequency Division Multiplexing signal resulting from combination of a plurality of signals transmitted by a plurality of signal transmitting apparatus by adoption of an Orthogonal Frequency Division Multiplexing method; and a demodulation section configured to carry out partial processing of processing to demodulate the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section by making use of either first pilot signals or second pilot signals where the first pilot signals are pilot signals extracted from the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section as signals having the same phase for all the signal transmitting apparatus, and the second pilot signals are pilot signals extracted from the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section as signals having different phases depending on the signal transmitting apparatus.

摘要翻译： 信号接收装置包括：获取部，被配置为通过采用正交频分复用方法获取由多个信号发送装置发送的多个信号的组合而得到的正交频分复用信号; 以及解调部，被配置为执行处理的部分处理，以通过利用第一导频信号或第二导频信号来解调由获取部获取的正交频分复用信号，其中第一导频信号是从正交频率提取的导频信号 由采集部分获取的分复用信号作为对于所有信号发送装置具有相同相位的信号，并且第二导频信号是从由采集部分获取的正交频分复用信号中提取的导频信号，作为具有不同相位的信号，取决于 信号发送装置。

公开(公告)号：US08509327B2

公开(公告)日：2013-08-13

申请号：US12836667

申请日：2010-07-15

申请人： Yuken Goto ,  Kenichi Kobayashi ,  Suguru Houchi

发明人： Yuken Goto ,  Kenichi Kobayashi ,  Suguru Houchi

IPC分类号： H04K1/00

CPC分类号： H04L27/2659 ,  H04L27/266 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2685 ,  H04L2025/03414 ,  H04L2027/0053 ,  H04L2027/0071 ,  H04L2027/0095

摘要： Disclosed herein is a receiving apparatus including a preamble analyzer configured to receive a frame of DVB-T2 made up of an OFDM signal and analyze a preamble contained in the received frame; an offset detector configured to detect a fine offset and a coarse offset on the basis of the analyzed preamble; a carrier frequency corrector configured to execute carrier frequency correction on an OFDM time domain signal obtained by quadrature demodulation on the basis of the detected fine offset and the detected coarse offset; a determiner configured to determine whether the detection of the coarse offset has been completed; and a control signal outputter configured, if the detection of the coarse offset is determined to be completed, to output a control signal for feeding back the fine offset detected on the basis of an OFDM frequency domain signal obtained by FFT computation to the carrier frequency corrector.

摘要翻译： 本文公开了一种接收装置，包括：前置码分析器，被配置为接收由OFDM信号构成的DVB-T2帧，并分析接收帧中包含的前同步码; 偏移检测器，被配置为基于所分析的前导码来检测精细偏移和粗略偏移; 载波频率校正器，被配置为基于所检测到的精细偏移和检测到的粗略偏移，对通过正交解调获得的OFDM时域信号执行载波频率校正; 确定器，被配置为确定所述粗略偏移的检测是否已经完成; 以及控制信号输出器，被配置为如果粗略偏移的检测被确定为完成，则输出用于将基于通过FFT计算获得的OFDM频域信号检测到的精细偏移反馈到载波频率校正器的控制信号 。

公开(公告)号：US20110019101A1

公开(公告)日：2011-01-27

申请号：US12836667

申请日：2010-07-15

申请人： Yuken GOTO ,  Kenichi Kobayashi ,  Suguru Houchi

发明人： Yuken GOTO ,  Kenichi Kobayashi ,  Suguru Houchi

IPC分类号： H04N5/44

CPC分类号： H04L27/2659 ,  H04L27/266 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2685 ,  H04L2025/03414 ,  H04L2027/0053 ,  H04L2027/0071 ,  H04L2027/0095

摘要： Disclosed herein is a receiving apparatus including a preamble analyzer configured to receive a frame of DVB-T2 made up of an OFDM signal and analyze a preamble contained in the received frame; an offset detector configured to detect a fine offset and a coarse offset on the basis of the analyzed preamble; a carrier frequency corrector configured to execute carrier frequency correction on an OFDM time domain signal obtained by quadrature demodulation on the basis of the detected fine offset and the detected coarse offset; a determiner configured to determine whether the detection of the coarse offset has been completed; and a control signal outputter configured, if the detection of the coarse offset is determined to be completed, to output a control signal for feeding back the fine offset detected on the basis of an OFDM frequency domain signal obtained by FFT computation to the carrier frequency corrector.

摘要翻译： 本文公开了一种接收装置，包括：前置码分析器，被配置为接收由OFDM信号构成的DVB-T2帧，并分析接收帧中包含的前同步码; 偏移检测器，被配置为基于所分析的前导码来检测精细偏移和粗略偏移; 载波频率校正器，被配置为基于所检测到的精细偏移和检测到的粗略偏移，对通过正交解调获得的OFDM时域信号执行载波频率校正; 确定器，被配置为确定所述粗略偏移的检测是否已经完成; 以及控制信号输出器，被配置为如果粗略偏移的检测被确定为完成，则输出用于将基于通过FFT计算获得的OFDM频域信号检测到的精细偏移反馈到载波频率校正器的控制信号 。

公开(公告)号：US20120099677A1

公开(公告)日：2012-04-26

申请号：US13235917

申请日：2011-09-19

申请人： Ryoji IKEGAYA ,  Hidetoshi Kawauchi ,  Suguru Houchi ,  Naoki Yoshimochi

发明人： Ryoji IKEGAYA ,  Hidetoshi Kawauchi ,  Suguru Houchi ,  Naoki Yoshimochi

IPC分类号： H04L27/06

CPC分类号： H04L25/03159 ,  H04L27/265

摘要： A signal receiving apparatus includes: a processing unit configured to carry out Fourier transform on Fourier-transform data serving as a Fourier-transform object and carry out Fourier transform on inverse-Fourier-transform data serving as an inverse-Fourier-transform object; and a control unit configured to output pieces of data obtained as a result of the Fourier transform carried out on the Fourier-transform data in an order, in which the pieces of data have been obtained, in a process of outputting the pieces of data and output other pieces of data obtained as a result of the Fourier transform carried out on the inverse-Fourier transform data by rearranging the other pieces of data in a process of outputting the other pieces of data.

摘要翻译： 一种信号接收装置，包括：处理单元，被配置为对作为傅里叶变换对象的傅里叶变换数据进行傅里叶变换，对作为傅里叶逆变换对象的逆傅里叶变换数据进行傅里叶变换; 以及控制单元，被配置为在输出所述数据和/或所述数据的处理中，以获得的所述数据数据的顺序，输出在所述傅立叶变换数据上执行的作为傅立叶变换的结果而获得的数据，以及 在输出其他数据的过程中，通过重新排列其他数据，输出通过傅立叶变换的结果而获得的其他数据。

公开(公告)号：US08634486B2

公开(公告)日：2014-01-21

申请号：US13235917

申请日：2011-09-19

申请人： Ryoji Ikegaya ,  Hidetoshi Kawauchi ,  Suguru Houchi ,  Naoki Yoshimochi

发明人： Ryoji Ikegaya ,  Hidetoshi Kawauchi ,  Suguru Houchi ,  Naoki Yoshimochi

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/03159 ,  H04L27/265

摘要： A signal receiving apparatus includes: a processing unit configured to carry out Fourier transform on Fourier-transform data serving as a Fourier-transform object and carry out Fourier transform on inverse-Fourier-transform data serving as an inverse-Fourier-transform object; and a control unit configured to output pieces of data obtained as a result of the Fourier transform carried out on the Fourier-transform data in an order, in which the pieces of data have been obtained, in a process of outputting the pieces of data and output other pieces of data obtained as a result of the Fourier transform carried out on the inverse-Fourier transform data by rearranging the other pieces of data in a process of outputting the other pieces of data.

摘要翻译： 一种信号接收装置，包括：处理单元，被配置为对作为傅里叶变换对象的傅里叶变换数据进行傅里叶变换，对作为傅里叶逆变换对象的逆傅里叶变换数据进行傅里叶变换; 以及控制单元，被配置为在输出所述数据和/或所述数据的处理中，以获得的所述数据数据的顺序，输出在所述傅立叶变换数据上执行的作为傅立叶变换的结果而获得的数据，以及 在输出其他数据的过程中，通过重新排列其他数据，输出通过傅立叶变换的结果而获得的其他数据。