公开(公告)号：US07164738B2

公开(公告)日：2007-01-16

申请号：US09725532

申请日：2000-11-29

申请人： Hiromi Miyamoto ,  Yoshiaki Nakano ,  Ichiro Abeno

发明人： Hiromi Miyamoto ,  Yoshiaki Nakano ,  Ichiro Abeno

IPC分类号： H04B15/00

CPC分类号： H03K5/159 ,  H03F1/3223 ,  H03F1/3252 ,  H03H7/48 ,  H03H11/22

摘要： In a signal cancellation method and device which can cancel input signals quickly and reliably (stably), an input signal is split into a first and second signal. The second signal is split into mutually orthogonal first and second subsignals which are recombined after the respective amplitudes thereof have been adjusted, The first signal is canceled by the third signal thereby obtained. The orthogonal subsignals can undergo amplitude adjustment independently, and the third signal obtained by recombining the subsignals after adjustment can become a cancellation signal having a really selected phase and amplitude over the first through fourth quadrants of the vector plane.

摘要翻译： 在可以快速，可靠（稳定地）抵消输入信号的信号消除方法和装置中，输入信号被分成第一和第二信号。 第二信号被分割成相互正交的第一和第二子信号，在其各自的幅度被调整之后被重组，第一信号被第三信号抵消，由此获得。 正交子信号可以独立地进行幅度调整，并且通过在调整之后重新组合子信号而获得的第三信号可以成为在向量平面的第一至第四象限上具有真正选择的相位和幅度的抵消信号。

公开(公告)号：US20060198464A1

公开(公告)日：2006-09-07

申请号：US11165866

申请日：2005-06-24

申请人： Takao Sasaki ,  Masayuki Oonuki ,  Hiromi Miyamoto

发明人： Takao Sasaki ,  Masayuki Oonuki ,  Hiromi Miyamoto

IPC分类号： H04L25/03

CPC分类号： H03F1/3258 ,  H03F1/0205 ,  H03F1/3241 ,  H03F1/3247 ,  H03F2201/3233 ,  H04B2001/0425

摘要： Provided is a distortion compensation apparatus which can correspond to the number of carriers adaptively. The apparatus includes a distortion compensation processing circuit multiplying an input signal by a distortion compensation coefficient; a distortion compensation coefficient storage storing the distortion compensation coefficient correspondingly to the input signal power; a distortion compensation coefficient calculator calculating an update value of the distortion compensation coefficient stored in the distortion compensation coefficient storage, based on the input signal and a feedback signal being feedbacked from the output side of a distortion device; a digital filter inputting the output of the distortion compensation processing circuit. Further is included a modifying unit, which modifies the passband of the digital filter so as to reduce a distortion compensation control bandwidth in the predistortion portion, in response to the reduction of the number of carriers in the input signal.

公开(公告)号：US07613250B2

公开(公告)日：2009-11-03

申请号：US11165866

申请日：2005-06-24

申请人： Takao Sasaki ,  Masayuki Oonuki ,  Hiromi Miyamoto

发明人： Takao Sasaki ,  Masayuki Oonuki ,  Hiromi Miyamoto

IPC分类号： H04K1/02

CPC分类号： H03F1/3258 ,  H03F1/0205 ,  H03F1/3241 ,  H03F1/3247 ,  H03F2201/3233 ,  H04B2001/0425

摘要： Provided is a distortion compensation apparatus which can correspond to the number of carriers adaptively. The apparatus includes a distortion compensation processing circuit multiplying an input signal by a distortion compensation coefficient; a distortion compensation coefficient storage storing the distortion compensation coefficient correspondingly to the input signal power; a distortion compensation coefficient calculator calculating an update value of the distortion compensation coefficient stored in the distortion compensation coefficient storage, based on the input signal and a feedback signal being feedbacked from the output side of a distortion device; a digital filter inputting the output of the distortion compensation processing circuit. Further is included a modifying unit, which modifies the passband of the digital filter so as to reduce a distortion compensation control bandwidth in the predistortion portion, in response to the reduction of the number of carriers in the input signal.

摘要翻译： 提供了可以自适应地对应于载波数量的失真补偿装置。 该装置包括将输入信号乘以失真补偿系数的失真补偿处理电路; 失真补偿系数存储器，存储对应于输入信号功率的失真补偿系数; 失真补偿系数计算器，基于输入信号和从失真装置的输出侧反馈的反馈信号，计算存储在失真补偿系数存储器中的失真补偿系数的更新值; 输入失真补偿处理电路的输出的数字滤波器。 还包括修改单元，其修改数字滤波器的通带，以便响应于输入信号中载波数目的减少而减小预失真部分中的失真补偿控制带宽。

公开(公告)号：US20050101254A1

公开(公告)日：2005-05-12

申请号：US10827081

申请日：2004-04-19

申请人： Takao Sasaki ,  Hideharu Shako ,  Hiromi Miyamoto

发明人： Takao Sasaki ,  Hideharu Shako ,  Hiromi Miyamoto

IPC分类号： H03F1/32 ,  H04B1/04 ,  H04L27/36 ,  H04L5/16

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/465 ,  H03F2201/3227 ,  H03F2201/3233 ,  H04L27/368

摘要： Disclosed is a distortion compensating amplifier having a distortion compensator for compensating for distortion of an amplifier by updating distortion compensation coefficients so as to null a difference between a transmit signal and a feedback signal, and subjecting the transmit signal to distortion compensation processing using the distortion compensation coefficients, an amplifier for amplifying the transmit signal, which has undergone distortion compensation, in order to transmit the signal from an antenna, and a feedback unit for inputting an output signal from the amplifier to a distortion compensation coefficient updater in the distortion compensator as the feedback signal. Whether the level of an unwanted-wave signal that penetrates the amplifier from space via an antenna is greater than a set level is monitored. If the level of the unwanted-wave signal is above the set level, processing for updating distortion compensation coefficients is suspended. If the level of the unwanted-wave signal is below the set level, then processing for updating distortion compensation coefficients is resumed.

摘要翻译： 公开了一种失真补偿放大器，其具有失真补偿器，用于通过更新失真补偿系数来补偿放大器的失真，以便使发送信号和反馈信号之间的差值为零，以及使用失真补偿对发送信号进行失真补偿处理 系数，用于放大已经经历失真补偿的发射信号的放大器，以便从天线发射信号;以及反馈单元，用于将来自放大器的输出信号输入到失真补偿器中的失真补偿系数更新器作为 反馈信号。 监测通过天线从空间穿透放大器的不想要的波信号的电平是否大于设定电平。 如果不想要的波信号的电平高于设定电平，则暂停用于更新失真补偿系数的处理。 如果不想要的波信号的电平低于设定电平，则恢复更新失真补偿系数的处理。

公开(公告)号：US07415250B2

公开(公告)日：2008-08-19

申请号：US10827081

申请日：2004-04-19

申请人： Takao Sasaki ,  Hideharu Shako ,  Hiromi Miyamoto

发明人： Takao Sasaki ,  Hideharu Shako ,  Hiromi Miyamoto

IPC分类号： H04B1/04

CPC分类号： H03F1/3247 ,  H03F1/3294 ,  H03F2200/465 ,  H03F2201/3227 ,  H03F2201/3233 ,  H04L27/368

摘要： Disclosed is a distortion compensating amplifier having a distortion compensator for compensating for distortion of an amplifier by updating distortion compensation coefficients so as to null a difference between a transmit signal and a feedback signal, and subjecting the transmit signal to distortion compensation processing using the distortion compensation coefficients, an amplifier for amplifying the transmit signal, which has undergone distortion compensation, in order to transmit the signal from an antenna, and a feedback unit for inputting an output signal from the amplifier to a distortion compensation coefficient updater in the distortion compensator as the feedback signal. Whether the level of an unwanted-wave signal that penetrates the amplifier from space via an antenna is greater than a set level is monitored. If the level of the unwanted-wave signal is above the set level, processing for updating distortion compensation coefficients is suspended. If the level of the unwanted-wave signal is below the set level, then processing for updating distortion compensation coefficients is resumed.

摘要翻译： 公开了一种失真补偿放大器，其具有失真补偿器，用于通过更新失真补偿系数来补偿放大器的失真，以便使发送信号和反馈信号之间的差值为零，以及使用失真补偿对发送信号进行失真补偿处理 系数，用于放大已经经历失真补偿的发射信号的放大器，以便从天线发射信号;以及反馈单元，用于将来自放大器的输出信号输入到失真补偿器中的失真补偿系数更新器作为 反馈信号。 监测通过天线从空间穿透放大器的不想要的波信号的电平是否大于设定电平。 如果不想要的波信号的电平高于设定电平，则暂停用于更新失真补偿系数的处理。 如果不想要的波信号的电平低于设定电平，则恢复更新失真补偿系数的处理。

公开(公告)号：US06949976B2

公开(公告)日：2005-09-27

申请号：US11022239

申请日：2004-12-23

申请人： Yasuhito Funyu ,  Takao Sasaki ,  Hiromi Miyamoto ,  Takeshi Ohba

发明人： Yasuhito Funyu ,  Takao Sasaki ,  Hiromi Miyamoto ,  Takeshi Ohba

IPC分类号： H03F1/32 ,  H03F1/26

CPC分类号： H03F1/3247

摘要： A distortion compensating amplifier device is disclosed that maintains uniform delay amounts between a transmission input signal and a transmission output signal, even if there is a change in the device characteristics. The distortion compensating amplifier device of a digital predistortion type includes a second delay circuit that delays the transmission input signal; a distortion compensating circuit that performs predistortion compensation on the delayed signal, using a distortion compensating parameter; an amplifier that amplifies the signal subjected to the predistortion compensation; a first delay circuit that further delays the signal delayed by the second delay circuit; and a calculator that calculates the distortion compensating parameter to be used in the predistortion compensation, based on the difference between the signal output from the first delay circuit and the amplified signal.

摘要翻译： 公开了一种失真补偿放大器装置，即使在器件特性有变化的情况下，也能够在发送输入信号和发送输出信号之间保持均匀的延迟量。 数字预失真型的失真补偿放大器装置包括延迟发送输入信号的第二延迟电路; 失真补偿电路，使用失真补偿参数对延迟信号执行预失真补偿; 放大器，用于放大经过预失真补偿的信号; 第一延迟电路，其进一步延迟由所述第二延迟电路延迟的信号; 以及计算器，其基于从第一延迟电路输出的信号与放大信号之间的差异来计算用于预失真补偿的失真补偿参数。

公开(公告)号：US20050104658A1

公开(公告)日：2005-05-19

申请号：US11022239

申请日：2004-12-23

申请人： Yasuhito Funyu ,  Takao Sasaki ,  Hiromi Miyamoto ,  Takeshi Ohba

发明人： Yasuhito Funyu ,  Takao Sasaki ,  Hiromi Miyamoto ,  Takeshi Ohba

IPC分类号： H03F1/32 ,  H03F1/26

CPC分类号： H03F1/3247

摘要： A distortion compensating amplifier device is disclosed that maintains uniform delay amounts between a transmission input signal and a transmission output signal, even if there is a change in the device characteristics. The distortion compensating amplifier device of a digital predistortion type includes a second delay circuit that delays the transmission input signal; a distortion compensating circuit that performs predistortion compensation on the delayed signal, using a distortion compensating parameter; an amplifier that amplifies the signal subjected to the predistortion compensation; a first delay circuit that further delays the signal delayed by the second delay circuit; and a calculator that calculates the distortion compensating parameter to be used in the predistortion compensation, based on the difference between the signal output from the first delay circuit and the amplified signal.