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1. 发明申请

US20090285137A1 WIRELESS TRANSMITTING APPARATUS, WIRELESS RECEIVING APPARATUS, WIRELESS TRANSMISSION METHOD, WIRELESS RECEPTION METHOD, WIRELESS COMMUNICATION SYSTEMS, AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线传输设备，无线接收设备，无线传输方法，无线接收方法，无线通信系统和无线通信方法
公开(公告)号：US20090285137A1
公开(公告)日：2009-11-19
申请号：US11990807
申请日：2006-09-05
申请人： Takafumi Fujita , Daisei Uchida , Yosuke Fujino , Osamu Kagami , Masahiro Umehira
发明人： Takafumi Fujita , Daisei Uchida , Yosuke Fujino , Osamu Kagami , Masahiro Umehira
IPC分类号： H04B7/00 , H04L27/00
CPC分类号： H04L27/3836 , H04L25/0226 , H04L25/0232 , H04L27/261 , H04L27/2656 , H04L27/2657 , H04L27/2675 , H04L27/2692 , H04L27/2695 , H04L2027/0065 , H04L2027/0093
摘要： A wireless transmitting apparatus inserts a training signal into a transmission burst at fixed symbol intervals as a pilot signal, a wireless receiving apparatus performs AD conversion of a received burst signal, performs symbol timing recovery, performs frame position detection and pilot signal extraction from the received burst signal for which symbol timing was established, performs frame synchronization, and performs a carrier frequency estimation using pilot signal. A carrier frequency estimation is also performed with respect to a received burst signal for which frame synchronization was established, and channel distortion is estimated and output based on a frequency-corrected received burst signal. Channel distortion estimation is then performed with respect to a frequency-corrected received burst signal, and a data symbol sequence of the channel-compensated received burst signal is converted to a received data bit stream.
摘要翻译：无线发送装置将训练信号作为导频信号以固定符号间隔插入传输脉冲串，无线接收装置对接收到的脉冲串信号进行AD转换，进行符号定时恢复，从接收到的帧中进行帧位置检测和导频信号提取建立符号定时的突发信号执行帧同步，并使用导频信号进行载波频率估计。还针对建立了帧同步的接收的脉冲串信号执行载波频率估计，并且基于经频率校正的接收突发信号来估计和输出信道失真。然后对频率校正的接收脉冲串信号执行信道失真估计，并且将信道补偿的接收脉冲信号的数据符号序列转换为接收的数据比特流。

2. 发明授权

US08644766B2 Radio communication system, transmission device, reception device, radio communication method, transmission method, reception method 有权
标题翻译：无线通信系统，发送装置，接收装置，无线通信方式，发送方式，接收方式
公开(公告)号：US08644766B2
公开(公告)日：2014-02-04
申请号：US12988417
申请日：2009-04-21
申请人： Yosuke Fujino , Daisei Uchida , Takafumi Fujita
发明人： Yosuke Fujino , Daisei Uchida , Takafumi Fujita
IPC分类号： H04B17/00
CPC分类号： H04L27/0014 , H04L27/18 , H04L27/34 , H04L2027/0026 , H04L2027/0067 , H04L2027/0095
摘要： A radio communication system includes a transmission device which transmits a plurality of radio signals, and a reception device which receives the plurality of radio signals from the transmission device and estimates, as a carrier frequency offset, a difference between a carrier frequency transmitted by the transmission device and a reference reception frequency used for reception. The system includes the transmission device which branches a first previously determined sequence of training signals, and transmits the radio signals modulated with frequencies by the carrier frequency offsets having regularity for a first sequence of a plurality of branched training signals, and the reception device which estimates the carrier frequency offset with the transmission device according to the first sequence of training signals included in the radio signals transmitted from the transmission device and phase shift amounts obtained from the first previously determined sequence of training signals.
摘要翻译：无线电通信系统包括发送多个无线电信号的发送装置和从发送装置接收多个无线信号的接收装置，作为载波频率偏移，推定由发送装置发送的载波频率之差设备和用于接收的参考接收频率。该系统包括分支第一预先确定的训练信号序列的发送装置，并且发送利用多个分支训练信号的第一序列具有规则性的载波频率偏移以频率调制的无线电信号，以及估计根据包括在从发送装置发送的无线电信号中的训练信号的第一序列的发送装置的载波频率偏移和从第一预先确定的训练信号序列获得的相移量。

3. 发明申请

US20110039588A1 RADIO COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, RADIO COMMUNICATION METHOD, TRANSMISSION METHOD, RECEPTION METHOD 有权
标题翻译：无线电通信系统，传输设备，接收设备，无线电通信方法，传输方法，接收方法
公开(公告)号：US20110039588A1
公开(公告)日：2011-02-17
申请号：US12988417
申请日：2009-04-21
申请人： Yosuke Fujino , Daisei Uchida , Takafumi Fujita
发明人： Yosuke Fujino , Daisei Uchida , Takafumi Fujita
IPC分类号： H04B7/00
CPC分类号： H04L27/0014 , H04L27/18 , H04L27/34 , H04L2027/0026 , H04L2027/0067 , H04L2027/0095
摘要： A radio communication system includes a transmission device which transmits a plurality of radio signals, and a reception device which receives the plurality of radio signals from the transmission device and estimates, as a carrier frequency offset, a difference between a carrier frequency transmitted by the transmission device and a reference reception frequency used for reception. The system includes the transmission device which branches a first previously determined sequence of training signals, and transmits the radio signals modulated with frequencies by the carrier frequency offsets having regularity for a first sequence of a plurality of branched training signals, and the reception device which estimates the carrier frequency offset with the transmission device according to the first sequence of training signals included in the radio signals transmitted from the transmission device and phase shift amounts obtained from the first previously determined sequence of training signals.
摘要翻译：无线电通信系统包括发送多个无线电信号的发送装置和从发送装置接收多个无线信号的接收装置，作为载波频率偏移，推定发送的载波频率之差设备和用于接收的参考接收频率。该系统包括分支第一预先确定的训练信号序列的发送装置，并且发送利用多个分支训练信号的第一序列具有规则性的载波频率偏移以频率调制的无线电信号，以及估计根据包括在从发送装置发送的无线电信号中的训练信号的第一序列的发送装置的载波频率偏移和从第一预先确定的训练信号序列获得的相移量。

4. 发明授权

US08248975B2 Wireless transmitting apparatus, wireless receiving apparatus, wireless transmission method, wireless reception method, wireless communication system, and wireless communication method 有权
标题翻译：无线发送装置，无线接收装置，无线发送方法，无线接收方法，无线通信系统和无线通信方式
公开(公告)号：US08248975B2
公开(公告)日：2012-08-21
申请号：US11990807
申请日：2006-09-05
申请人： Takafumi Fujita , Daisei Uchida , Yosuke Fujino , Osamu Kagami , Masahiro Umehira
发明人： Takafumi Fujita , Daisei Uchida , Yosuke Fujino , Osamu Kagami , Masahiro Umehira
IPC分类号： H04B7/00
CPC分类号： H04L27/3836 , H04L25/0226 , H04L25/0232 , H04L27/261 , H04L27/2656 , H04L27/2657 , H04L27/2675 , H04L27/2692 , H04L27/2695 , H04L2027/0065 , H04L2027/0093
摘要： A wireless transmitting apparatus inserts a training signal into a transmission burst at fixed symbol intervals as a pilot signal, a wireless receiving apparatus performs AD conversion of a received burst signal, performs symbol timing recovery, performs frame position detection and pilot signal extraction from the received burst signal for which symbol timing was established, performs frame synchronization, and performs a carrier frequency estimation using pilot signal. A carrier frequency estimation is also performed with respect to a received burst signal for which frame synchronization was established, and channel distortion is estimated and output based on a frequency-corrected received burst signal. Channel distortion estimation is then performed with respect to a frequency-corrected received burst signal, and a data symbol sequence of the channel-compensated received burst signal is converted to a received data bit stream.
摘要翻译：无线发送装置将训练信号作为导频信号以固定符号间隔插入传输脉冲串，无线接收装置对接收到的脉冲串信号进行AD转换，进行符号定时恢复，从接收到的帧中进行帧位置检测和导频信号提取建立符号定时的突发信号执行帧同步，并使用导频信号进行载波频率估计。还针对建立了帧同步的接收的脉冲串信号执行载波频率估计，并且基于经频率校正的接收突发信号来估计和输出信道失真。然后对频率校正的接收脉冲串信号执行信道失真估计，并且将信道补偿的接收脉冲信号的数据符号序列转换为接收的数据比特流。

5. 发明授权

US07242720B2 OFDM signal communication system, OFDM signal transmitting device and OFDM signal receiving device 有权
标题翻译： OFDM信号通信系统，OFDM信号发送装置和OFDM信号接收装置
公开(公告)号：US07242720B2
公开(公告)日：2007-07-10
申请号：US10117390
申请日：2002-04-05
申请人： Takatoshi Sugiyama , Yusuke Asai , Satoshi Kurosaki , Masahiro Umehira , Daisei Uchida , Yasuo Suzuki
发明人： Takatoshi Sugiyama , Yusuke Asai , Satoshi Kurosaki , Masahiro Umehira , Daisei Uchida , Yasuo Suzuki
IPC分类号： H04K1/10 , H04B7/02
CPC分类号： H04L27/2662 , H04L1/06 , H04L27/2602 , H04L27/2637 , H04L27/2657 , H04L27/2679 , H04L2027/0026 , H04L2027/0087
摘要： An OFDM signal communication system used in broadband mobile communication, achieves stable operation under severe frequency selective fading environments, giving high quality. The OFDM signal communication system which transmits OFDM signals over the same radio frequency from N transmitting antennas, has an inverse matrix computer for computing an N×N inverse matrix constituted by propagation coefficients for respective propagation paths between each of N transmitting antennas and each of N receiving antennas, and a subcarrier demodulator which separates the signals of the respective propagation paths, based on the obtained inverse matrix.
摘要翻译：宽带移动通信中使用的OFDM信号通信系统，在严重频率选择性衰落环境下实现稳定运行，提供高质量。从N个发射天线在相同射频上发送OFDM信号的OFDM信号通信系统具有逆矩阵计算机，用于计算由N个发射天线和N个接收天线中的每一个之间的各个传播路径的传播系数构成的N×N逆矩阵以及基于所获得的逆矩阵来分离各个传播路径的信号的副载波解调器。

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