公开(公告)号：US08199838B2

公开(公告)日：2012-06-12

申请号：US13307470

申请日：2011-11-30

申请人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

发明人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/03343 ,  H04L25/03821 ,  H04L27/2615 ,  H04L2025/03414

摘要： Inter-carrier interference caused by frequency fluctuations, amplitude fluctuations, phase fluctuations, or the like is reduced without reducing a transmission efficiency. A receiving end has a canceling filter section that alleviates the inter-carrier interference caused by the frequency fluctuations, the amplitude fluctuations, the phase fluctuations, or the like through filtering processing. A transmitting end has a precoding section that facilitates determination of demodulation data in a vector demodulation section on the receiving end through precoding processing. Or, the receiving end has a trellis decoding section that decodes the demodulation data through trellis decoding processing.

摘要翻译： 在不降低传输效率的情况下，降低由频率波动，振幅波动，相位波动等引起的载波间干扰。 接收端具有通过滤波处理来缓和由频率波动，振幅波动，相位波动等引起的载波间干扰的抵消滤波器部。 发送端具有预编码部，其通过预编码处理有助于确定接收端的向量解调部中的解调数据。 或者，接收端具有网格解码部分，其通过网格解码处理对解调数据进行解码。

公开(公告)号：US07545870B1

公开(公告)日：2009-06-09

申请号：US10582765

申请日：2005-04-12

申请人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

发明人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

IPC分类号： H04L7/00 ,  H04L27/28

CPC分类号： H04L27/266 ,  H04L27/2613 ,  H04L27/2642 ,  H04L27/2659 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2679 ,  H04L2027/0067 ,  H04L2027/0095

摘要： A reception device according to the present invention receives a transmission frame including a synchronization symbol string, having a synchronization symbol repeated multiple times, inserted before a data symbol string. The synchronization symbol is obtained by synthesizing a plurality of sub band symbols which are mutually orthogonal and having different carrier frequencies. The carrier frequencies of the sub band symbols are located at an equal predetermined frequency interval. The synchronization symbol includes a repeated synchronization pattern. The reception device detects a rough carrier frequency error from a phase difference of a synchronization pattern correlation value to correct the frequency, and then detects a residual frequency error from an inter-symbol phase difference of each sub band to correct the frequency. The reception device detects a sampling clock frequency error from an inter-sub band phase difference to correct the frequency. Thus, the demodulation error of the data symbol is reduced.

摘要翻译： 根据本发明的接收装置在数据符号串之前接收包括具有重复多次的同步符号的同步符号串的传输帧。 通过合成相互正交且具有不同载波频率的多个子带符号来获得同步符号。 子带符号的载波频率位于相等的预定频率间隔。 同步符号包括重复的同步模式。 接收装置根据同步模式相关值的相位差检测粗略载波频率误差，以校正频率，然后从每个子带的符号间相位差检测残留频率误差，以校正频率。 接收装置从子频带相位差检测采样时钟频率误差，以校正频率。 因此，减少数据符号的解调错误。

公开(公告)号：US20060233225A1

公开(公告)日：2006-10-19

申请号：US10550669

申请日：2004-03-30

申请人： Yukihiro Omoto

发明人： Yukihiro Omoto

IPC分类号： H04B1/00

CPC分类号： H04L27/0014 ,  H04L7/042 ,  H04L7/043 ,  H04L27/2657 ,  H04L2027/003 ,  H04L2027/0065 ,  H04L2027/0067

摘要： A first frequency synchronization unit (103) corresponds to the frequency synchronization apparatus of the present invention. A higher apparatus that is, for example, a wireless receiver supplies a reception signal to the first frequency synchronization unit (103) via an A/D converter (101) and an orthogonal detector (102). A synchronization symbol that includes a predetermined waveform at least twice is incorporated into the reception signal. A correlation estimator (104) generates a reference signal expressing the same waveform as the synchronization symbol, and successively finds correlation vectors between the reception signal and the reference signal. A first signal error detector (106) finds a frequency error based on an average phase difference of predetermined correlation vectors, and finds an absolute phase error based on transition of absolute phase of predetermined correlation vectors. A first frequency corrector (108) simultaneously gives the reception signal a frequency shift and phase rotation that cancel the errors.

摘要翻译： 第一频率同步单元（103）对应于本发明的频率同步装置。 例如，无线接收器的更高的设备经由A / D转换器（101）和正交检测器（102）将接收信号提供给第一频率同步单元（103）。 将包括至少两次的预定波形的同步符号并入接收信号中。 相关估计器（104）产生表示与同步符号相同波形的参考信号，并且连续地在接收信号和参考信号之间找到相关矢量。 第一信号误差检测器（106）基于预定相关矢量的平均相位差求出频率误差，并且基于预定相关矢量的绝对相位的转变来求出绝对相位误差。 第一频率校正器（108）同时给出接收信号以消除误差的频移和相位旋转。

公开(公告)号：US08520767B2

公开(公告)日：2013-08-27

申请号：US13265383

申请日：2010-12-28

申请人： Yukihiro Omoto ,  Shigeru Morimoto

发明人： Yukihiro Omoto ,  Shigeru Morimoto

IPC分类号： H04L27/00

CPC分类号： H04L27/2032 ,  H03F1/02 ,  H03F3/24 ,  H04B1/0475 ,  H04B2001/045 ,  H04L27/36

摘要： A transmission circuit adjust a difference between signal delay amounts in an amplitude path and a phase path with a low power consumption. An amplitude modulation section amplitude-modulates a phase modulation signal outputted from a phase modulation section with a voltage control signal provided by a regulator to generate a transmission signal for an output of an antenna. Similarly, a feedback signal generation section amplitude-modulates the phase modulation signal with a voltage control signal to generate a feedback signal. The signal is fed back to a delay adjustments sections used for calculating and adjusting the difference between the signal delay amounts in the amplitude path and the phase path. The feedback signal generation section is attained by a power amplifier having the same configuration as the amplitude modulation section and a smaller circuit scale.

摘要翻译： 传输电路以低功耗调整振幅路径中的信号延迟量与相位路径之间的差异。 振幅调制部利用由调节器提供的电压控制信号，对从相位调制部输出的相位调制信号进行幅度调制，生成用于天线输出的发送信号。 类似地，反馈信号生成部用电压控制信号对相位调制信号进行振幅调制，生成反馈信号。 信号被反馈到用于计算和调整振幅路径中的信号延迟量与相位路径之间的差的延迟调整部分。 反馈信号生成部由具有与振幅调制部相同的结构的功率放大器和较小的电路规格来实现。

公开(公告)号：US08559553B2

公开(公告)日：2013-10-15

申请号：US13391704

申请日：2010-04-07

申请人： Yukihiro Omoto ,  Kaoru Ishida ,  Hiroshi Komori

发明人： Yukihiro Omoto ,  Kaoru Ishida ,  Hiroshi Komori

IPC分类号： H04L27/12 ,  H04L27/00

CPC分类号： H03F3/24 ,  H03F1/02 ,  H03F1/0222 ,  H03F1/0277 ,  H03F3/189 ,  H03F2200/336 ,  H03F2200/504 ,  H03G3/004 ,  H03G3/3042 ,  H04B1/04 ,  H04B1/0483

摘要： Provided is a transmitter apparatus including: a signal conversion section for, in polar modulation, converting input data into an amplitude-component signal and a phase-component signal, and in quadrature modulation, converting input data into an in-phase component signal and a quadrature component signal; a carrier wave generation section for outputting a carrier wave; a mixer section for, in quadrature modulation, generating a quadrature modulation signal; a regulator for, in polar modulation, outputting a supply voltage control signal; and a power amplifier for, in polar modulation, amplifying the supply voltage control signal and superimposing the resultant signal onto the carrier wave, thereby generating a transmission signal, wherein in polar modulation, the carrier wave generation section outputs the carrier wave modulated with respect to phase component, and in quadrature modulation, the carrier wave generation section outputs the carrier wave that is yet to be modulated.

摘要翻译： 提供一种发射机装置，包括：信号转换部分，用于在极性调制中将输入数据转换为振幅分量信号和相位分量信号，并在正交调制中将输入数据转换为同相分量信号，以及 正交分量信号; 用于输出载波的载波产生部分; 用于正交调制的混频器部分，产生正交调制信号; 用于在极性调制中输出电源电压控制信号的调节器; 以及功率放大器，用于在极性调制中放大电源电压控制信号并将所得到的信号叠加到载波上，从而产生传输信号，其中在极坐标调制中，载波产生部分输出相对于 在正交调制中，载波生成部输出尚未被调制的载波。

公开(公告)号：US08090034B2

公开(公告)日：2012-01-03

申请号：US11915444

申请日：2006-06-20

申请人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

发明人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/03343 ,  H04L25/03821 ,  H04L27/2615 ,  H04L2025/03414

摘要： Inter-carrier interference caused by frequency fluctuations, amplitude fluctuations, phase fluctuations, or the like is reduced without reducing a transmission efficiency. A receiving end has a canceling filter section that alleviates the inter-carrier interference caused by the frequency fluctuations, the amplitude fluctuations, the phase fluctuations, or the like through filtering processing. A transmitting end has a precoding section that facilitates determination of demodulation data in a vector demodulation section on the receiving end through precoding processing. Or, the receiving end has a trellis decoding section that decodes the demodulation data through trellis decoding processing.

公开(公告)号：US20090268837A1

公开(公告)日：2009-10-29

申请号：US12158825

申请日：2006-12-18

申请人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

发明人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

IPC分类号： H04B7/02

CPC分类号： H04L25/0226 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2647 ,  H04L27/2698 ,  H04L2025/03414

摘要： An object is to generate a pilot signal for estimating transmission characteristic of a transmission channel which is suitable for the OFDM/OQAM multicarrier modulation. A phase reference pilot symbol of which a modulation amplitude is suppressed to zero, and an amplitude reference pilot signal obtained through modulation performed by using an amplitude known to a reception end are transmitted from a transmission end, and the transmission characteristic of the transmission channel is estimated and compensated by using the phase reference pilot signal and the amplitude reference pilot signal at the reception end. Thus, it is possible to simplify frame generation process performed at the transmission end, and reduce transmission power for the phase reference pilot signal.

摘要翻译： 目的是产生用于估计适合于OFDM / OQAM多载波调制的传输信道的传输特性的导频信号。 调制幅度被抑制为零的相位参考导频符号和通过使用接收端已知的振幅进行的调制获得的振幅参考导频信号从发送端发送，并且传输信道的传输特性为 通过使用相位参考导频信号和接收端的幅度参考导频信号进行估计和补偿。 因此，可以简化在发送端执行的帧生成处理，并且降低相位参考导频信号的发送功率。

公开(公告)号：US20090141836A1

公开(公告)日：2009-06-04

申请号：US10582765

申请日：2005-04-12

申请人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

发明人： Naganori Shirakata ,  Yukihiro Omoto ,  Yoshio Urabe ,  Yasuo Harada

IPC分类号： H04L27/06

CPC分类号： H04L27/266 ,  H04L27/2613 ,  H04L27/2642 ,  H04L27/2659 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2679 ,  H04L2027/0067 ,  H04L2027/0095

摘要： A reception device according to the present invention receives a transmission frame including a synchronization symbol string, having a synchronization symbol repeated multiple times, inserted before a data symbol string. The synchronization symbol is obtained by synthesizing a plurality of sub band symbols which are mutually orthogonal and having different carrier frequencies. The carrier frequencies of the sub band symbols are located at an equal predetermined frequency interval. The synchronization symbol includes a repeated synchronization pattern. The reception device detects a rough carrier frequency error from a phase difference of a synchronization pattern correlation value to correct the frequency, and then detects a residual frequency error from an inter-symbol phase difference of each sub band to correct the frequency. The reception device detects a sampling clock frequency error from an inter-sub band phase difference to correct the frequency. Thus, the demodulation error of the data symbol is reduced.

摘要翻译： 根据本发明的接收装置在数据符号串之前接收包括具有重复多次的同步符号的同步符号串的传输帧。 通过合成相互正交且具有不同载波频率的多个子带符号来获得同步符号。 子带符号的载波频率位于相等的预定频率间隔。 同步符号包括重复的同步模式。 接收装置根据同步模式相关值的相位差检测粗略载波频率误差，以校正频率，然后从每个子带的符号间相位差检测残留频率误差，以校正频率。 接收装置从子频带相位差检测采样时钟频率误差，以校正频率。 因此，减少数据符号的解调错误。

公开(公告)号：US20080159423A1

公开(公告)日：2008-07-03

申请号：US11783377

申请日：2007-04-09

申请人： Yukihiro Omoto ,  Kenichi Mori ,  Tomohiro Kimura

发明人： Yukihiro Omoto ,  Kenichi Mori ,  Tomohiro Kimura

IPC分类号： H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0224 ,  H04L27/2698

摘要： In a transmitter, at least one pilot carrier which is modulated with a signal sequence including a reference pilot signal sequence represented by any of amplitude modulation vectors {α, α, −α, −α}, {α, −α, −α, α}, {−α, α, α, −α}, and {−α, −α, α, α} where α represents a real number other than 0, is generated, and an OFDM/OQAM multicarrier modulation signal is transmitted. In a receiver, the OFDM/OQAM multicarrier modulation signal is demodulated, and transmission channel characteristics are estimated and corrected based on two successive demodulation vectors in a time direction which are obtained by demodulating the pilot carrier.

摘要翻译： 在一个发射机中，至少一个导频载波被一个信号序列调制，该信号序列包括由幅度调制向量（α，α，α，α，α），{α，α，α，α， 其中alpha表示除0以外的实数，并且发送OFDM / OQAM多载波调制信号，其中，α-α，α-α，α-α，α-α，α，α，α， 。 在接收机中，解调OFDM / OQAM多载波调制信号，并且基于通过对导频载波进行解调获得的时间方向上的两个连续解调矢量来估计和校正传输信道特性。

公开(公告)号：US08179986B2

公开(公告)日：2012-05-15

申请号：US12158825

申请日：2006-12-18

申请人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

发明人： Tomohiro Kimura ,  Yukihiro Omoto ,  Kenichi Mori

IPC分类号： H04K1/10

CPC分类号： H04L25/0226 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2647 ,  H04L27/2698 ,  H04L2025/03414

摘要： In order is to generate a pilot signal for estimating a transmission characteristic of a transmission channel suitable for OFDM/OQAM multicarrier modulation, a phase reference pilot symbol of which a modulation amplitude is suppressed to zero, and an amplitude reference pilot signal obtained through modulation performed by using an amplitude known to a reception end are transmitted from a transmission end. Further, the transmission characteristic of the transmission channel is estimated and compensated using the phase reference pilot signal and the amplitude reference pilot signal at the reception end. Accordingly, it is possible to simplify a frame generation process performed at the transmission end, and reduce transmission power for the phase reference pilot signal.

摘要翻译： 为了生成用于估计适合于OFDM / OQAM多载波调制的传输信道的传输特性的导频信号，将调制幅度抑制为零的相位参考导频符号和通过调制获得的幅度参考导频信号 通过使用从接收端已知的幅度从发送端发送。 此外，使用接收端的相位参考导频信号和幅度参考导频信号来估计和补偿传输信道的传输特性。 因此，可以简化在发送端执行的帧生成处理，并且降低相位参考导频信号的发送功率。