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11. 发明授权

US08081029B2 Distortion compensation apparatus and method for detecting failure in the same 有权
标题翻译：失真补偿装置及其检测方法
公开(公告)号：US08081029B2
公开(公告)日：2011-12-20
申请号：US12763326
申请日：2010-04-20
申请人： Takeshi Ohba , Hideharu Shako
发明人： Takeshi Ohba , Hideharu Shako
IPC分类号： H03F1/26
CPC分类号： H03F1/3247 , H03F2200/336 , H03F2201/3233
摘要： There is provided a distortion compensation apparatus for compensating distortion of an output of a power amplifier included in a radio transmitter. The distortion compensation apparatus includes a difference value calculator to calculate a difference value between a reference signal and a feedback signal, where the reference signal is branched from an input signal to the power amplifier and the feedback signal is branched from an output from the power amplifier; an integrator to accumulate the difference value; and a failure determiner to determine based on the accumulated difference value whether or not a failure has occurred or not.
摘要翻译：提供了一种用于补偿包括在无线电发射机中的功率放大器的输出失真的失真补偿装置。失真补偿装置包括差值计算器，用于计算参考信号和反馈信号之间的差值，其中参考信号从输入信号分支到功率放大器，并且反馈信号从功率放大器的输出分支 ; 积分器积分差值; 以及故障确定器，基于所累积的差值确定是否发生故障。

12. 发明申请

US20110221524A1 RADIO APPARATUS, DISTORTION CORRECTION DEVICE, AND DISTORTION CORRECTION METHOD 有权
标题翻译：无线电设备，失真校正装置和失真校正方法
公开(公告)号：US20110221524A1
公开(公告)日：2011-09-15
申请号：US13026614
申请日：2011-02-14
申请人： Satoshi Matsubara , Shuya Hirata , Takeshi Ohba , Hideharu Shako , Jun Sugiyama
发明人： Satoshi Matsubara , Shuya Hirata , Takeshi Ohba , Hideharu Shako , Jun Sugiyama
IPC分类号： H03F1/26
CPC分类号： H03F1/3247
摘要： When a distortion correction coefficient, which is calculated according to a signal input to a power amplifier and a signal output from the power amplifier, is larger than a first threshold, a distortion correction coefficient corresponding to the input signal is updated to the first threshold. When the calculated distortion correction coefficient is equal to or smaller than the first threshold, the distortion correction coefficient corresponding to the input signal is updated to the calculated distortion correction coefficient.
摘要翻译：当根据输入到功率放大器的信号和从功率放大器输出的信号计算的失真校正系数大于第一阈值时，将与输入信号对应的失真校正系数更新为第一阈值。当计算出的失真校正系数等于或小于第一阈值时，将与输入信号对应的失真校正系数更新为所计算的失真校正系数。

13. 发明申请

US20110038400A1 WIRELESS APPARATUS AND SIGNAL PROCESSING METHOD 有权
标题翻译：无线设备和信号处理方法
公开(公告)号：US20110038400A1
公开(公告)日：2011-02-17
申请号：US12794124
申请日：2010-06-04
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Yuichi Utsunomiya , Takeshi Ohba , Hideharu Shako , Yasuhito Funyu
IPC分类号： H04L27/18 , H04B1/38
CPC分类号： H04L27/2337
摘要： A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulation to an output signal of the A/D converter and outputs an in-phase signal and a quadrature signal; and an error detection unit which, based on the in-phase and quadrature signals output from the digital quadrature demodulation unit, detects a time difference error between the sample timing of the in-phase signal component and the sample timing of the quadrature signal component.
摘要翻译：无线装置包括：A / D转换器，其交替地从模拟形式的正交调制信号中采样同相信号分量和正交信号分量; 数字正交解调单元，对A / D转换器的输出信号进行数字正交解调，并输出同相信号和正交信号; 以及误差检测单元，其基于从数字正交解调单元输出的同相和正交信号，检测同相信号分量的采样定时与正交信号分量的采样定时之间的时差误差。

14. 发明申请

US20090140806A1 DISTORTION-COMPENSATION AMPLIFICATION APPARATUS AND DISTORTION COMPENSATION METHOD 有权
标题翻译：失真补偿放大装置和失真补偿方法
公开(公告)号：US20090140806A1
公开(公告)日：2009-06-04
申请号：US12206058
申请日：2008-09-08
申请人： Hideharu Shako , Takeshi Ohba
发明人： Hideharu Shako , Takeshi Ohba
IPC分类号： H03F1/32
CPC分类号： H03F1/3282 , H03F1/3247 , H03F2201/3233
摘要： Distortion-compensation amplification apparatus that can obtain an appropriate error vector magnitude without increasing power consumption and can suppress the distortion of a transmission signal appropriately. A distortion compensation section applies distortion compensation to the transmission signal. An amplification section amplifies the transmission signal to which distortion compensation has been applied by the distortion compensation section. A frequency component calculation section calculates the power of frequency components of the transmission signal amplified by the amplification section. A peak suppression section suppresses the peak value of the transmission signal input to the distortion compensation section in accordance with the power of the frequency components calculated by the frequency component calculation section.
摘要翻译：失真补偿放大装置，其可以在不增加功耗的情况下获得适当的误差矢量幅度，并且可以适当地抑制发射信号的失真。失真补偿部对发送信号进行失真补偿。放大部分放大由失真补偿部分施加了失真补偿的发送信号。频率分量计算部分计算由放大部分放大的发射信号的频率分量的功率。峰值抑制部根据由频率分量计算部计算出的频率分量的功率，抑制输入到失真补偿部的发送信号的峰值。

15. 发明授权

US07486744B2 Distortion compensation apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US07486744B2
公开(公告)日：2009-02-03
申请号：US11188782
申请日：2005-07-26
申请人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
发明人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
IPC分类号： H04L25/49
CPC分类号： H04L27/368 , H03F1/3241 , H03F1/3294 , H03F2200/321 , H03F2200/336 , H03F2201/3233 , H04B2001/0425
摘要： A step size parameter μ is adaptively varied when a distortion compensation coefficient is calculated in a distortion compensation apparatus, relation between transmission signal level and step size parameter μ is considered. The distortion compensation apparatus includes a memory storing distortion compensation coefficient in a designated write address, and outputting distortion compensation coefficient being stored in a designated readout address; a predistortion section performing distortion compensation processing onto a transmission signal, using the distortion compensation coefficient being output from memory; and a distortion compensation section calculating an update value of distortion compensation coefficient, based on error component existent between transmission signal before distortion compensation processing and transmission signal after being amplified by an amplifier. Further, the distortion compensation section modifies magnitude of step size parameter determining degree of effect of error component produced on the update value, when calculating the update value of the distortion compensation coefficient.
摘要翻译：当在失真补偿装置中计算失真补偿系数时，步长参数mu自适应变化，考虑发射信号电平与步长参数mu之间的关系。失真补偿装置包括存储在指定写入地址中的失真补偿系数的存储器，并输出存储在指定的读出地址中的失真补偿系数; 使用从存储器输出的失真补偿系数，对发送信号执行失真补偿处理的预失真部分; 以及失真补偿部，其基于由放大器放大后的失真补偿处理之前的发送信号与发送信号之间存在的误差成分，计算失真补偿系数的更新值。此外，当计算失真补偿系数的更新值时，失真补偿部分修改步长参数确定在更新值上产生的误差分量的影响程度的大小。

16. 发明授权

US07443923B2 Distortion compensating apparatus and method 有权
标题翻译：失真补偿装置及方法
公开(公告)号：US07443923B2
公开(公告)日：2008-10-28
申请号：US11437168
申请日：2006-05-19
申请人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
发明人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
IPC分类号： H04L25/49
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/321 , H03F2201/3233
摘要： The distortion compensating apparatus which adaptively updates a distortion compensation coefficient for an amplifier based on a difference between input and output signals of the amplifier, comprises: a distortion amount detector which detects the amount of distort of an output signal of the amplifier; a parameter holder which holds a parameter having been set therein; a parameter corrector which corrects the parameter in such a manner that the distortion amount detected by the detector is improved; and a distortion amount corrector which corrects the distortion amount detected by the detector in such a manner that the distortion amount is reduced by an offset amount according to a detection error. This arrangement makes it possible to accurately set the parameter relating to difference detection which is a factor of updating of distortion compensation coefficients of the distortion compensating apparatus.
摘要翻译：基于放大器的输入和输出信号之间的差异自适应地更新放大器的失真补偿系数的失真补偿装置包括：失真量检测器，其检测放大器的输出信号的失真量; 参数保持器，其保持已设置的参数; 参数校正器，其以使检测器检测到的失真量提高的方式校正参数; 以及失真量校正器，其以使得失真量根据检测误差减小偏移量的方式校正由检测器检测到的失真量。这种布置使得可以精确地设置与作为失真补偿装置的失真补偿系数的更新的因素的差分检测相关的参数。

17. 发明授权

US07430249B2 Carrier state judging device and transmitting device 有权
公开(公告)号：US07430249B2
公开(公告)日：2008-09-30
申请号：US11546910
申请日：2006-10-13
申请人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
发明人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
IPC分类号： H04L25/49
CPC分类号： H04L5/0016 , H04L27/2614 , H04L27/28
摘要： The present invention is a carrier state judging device having a multiplexing unit multiplexing carrier signals to be inputted in parallel, output control units inputted to the multiplexing unit and performing ON/OFF control of outputs of the carrier signals inputted to the output control units themselves according to predetermined ON/OFF setting values, frequency shift units and giving predetermined frequency shift quantities to the carrier signals inputted to the frequency shift units themselves, a detection unit detecting as to whether or not there is the carrier signal flowing through on each carrier signal transmission path, and a determining unit determining a state of the carrier signals multiplexed by the multiplexing unit on the basis of the ON/OFF setting value with respect to each of the output control units, the frequency shift quantity with respect to each of the frequency shift units and a result of the detection by the detection unit.

18. 发明授权

US07418058B2 Distortion compensating apparatus and method 有权
标题翻译：失真补偿装置及方法
公开(公告)号：US07418058B2
公开(公告)日：2008-08-26
申请号：US11504503
申请日：2006-08-15
申请人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
发明人： Hideharu Shako , Yasuhito Funyu , Takeshi Ohba
IPC分类号： H04L25/49 , H03C3/08 , H03C1/06
CPC分类号： H03F1/3247 , H03F1/3294 , H03F3/24 , H03F2200/321 , H03F2200/336 , H03F2200/451 , H03F2201/3233 , H04L27/368
摘要： The present apparatus includes: distortion amount detector which detects the amount of distortion of an output signal of the amplifier; parameter holder; parameter corrector which corrects a parameter held in the parameter holder in such a manner that the distortion amount detected by the distortion amount detector is improved; controller which controls frequency components to be subjected to distortion amount detection that is performed by the distortion amount detector, based on the distortion amounts of a plurality of different frequency components of the output signal of the amplifier and on specification values relating to the distortion amounts. This arrangement makes it possible to set (control) appropriate distortion data measurement point (frequency component to be detected) according to multiple specification values (for example, ACLR specification values) relating to the distortion amount.
摘要翻译：本装置包括：失真量检测器，其检测放大器的输出信号的失真量; 参数持有人参数校正器，其以使得由失真量检测器检测到的失真量提高的方式校正参数保持器中保持的参数; 控制器，其基于失真量检测器执行的失真量检测的频率分量，基于放大器的输出信号的多个不同频率分量的失真量和与失真量相关的规格值来控制。这种布置使得可以根据与失真量相关的多个规格值（例如，ACLR规范值）来设置（控制）适当的失真数据测量点（要检测的频率分量）。

19. 发明申请

US20080003958A1 Carrier state judging device and transmitting device 有权
标题翻译：载波状态判断装置和发射装置
公开(公告)号：US20080003958A1
公开(公告)日：2008-01-03
申请号：US11546910
申请日：2006-10-13
申请人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
发明人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
IPC分类号： H03C1/52
CPC分类号： H04L5/0016 , H04L27/2614 , H04L27/28
摘要： The present invention is a carrier state judging device having a multiplexing unit multiplexing carrier signals to be inputted in parallel, output control units inputted to the multiplexing unit and performing ON/OFF control of outputs of the carrier signals inputted to the output control units themselves according to predetermined ON/OFF setting values, frequency shift units and giving predetermined frequency shift quantities to the carrier signals inputted to the frequency shift units themselves, a detection unit detecting as to whether or not there is the carrier signal flowing through on each carrier signal transmission path, and a determining unit determining a state of the carrier signals multiplexed by the multiplexing unit on the basis of the ON/OFF setting value with respect to each of the output control units, the frequency shift quantity with respect to each of the frequency shift units and a result of the detection by the detection unit.
摘要翻译：本发明是具有多路复用单元的载波状态判断装置，并行输入载波信号，输入到多路复用单元的输出控制单元，对输入到输出控制单元的载波信号的输出执行ON / OFF控制，到预定的ON / OFF设置值，频移单位，并且向输入到频移单元的载波信号赋予预定的频移量;检测单元，检测在每个载波信号传输中是否存在流经的载波信号路径，以及确定单元，根据关于每个输出控制单元的ON / OFF设置值确定由复用单元多路复用的载波信号的状态，相对于每个频移的频移量单元和检测单元的检测结果。

20. 发明申请

US20070042726A1 Distortion compensation in wireless digital communication 有权
标题翻译：无线数字通信中的失真补偿
公开(公告)号：US20070042726A1
公开(公告)日：2007-02-22
申请号：US11319046
申请日：2005-12-27
申请人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
发明人： Takeshi Ohba , Yasuhito Funyu , Hideharu Shako
IPC分类号： H04B1/04
CPC分类号： H04L27/368 , H03F1/3247 , H04L27/364 , H04L2027/0016
摘要： A distortion compensating technique applied to a transmitter for transmitting a quadrature modulated signal in a wireless digital communication system is provided. A phase adjustment value is determined for a quadrature demodulated feedback signal based on comparison between the feedback signal and a reference signal to be transmitted from the transmitter. This phase adjustment value is compared with the previous phase adjustment value. If the comparison result between the current and previous phase adjustment values satisfies a prescribed condition, correction for quadrature modulation, such as DC offset correction, orthogonality correction, or IQ amplitude correction, is performed.
摘要翻译：提供了一种应用于在无线数字通信系统中发送正交调制信号的发射机的失真补偿技术。基于反馈信号和要从发射机发射的参考信号之间的比较，确定正交解调反馈信号的相位调整值。该相位调整值与先前的相位调整值进行比较。如果当前和前一相位调整值之间的比较结果满足规定条件，则执行诸如DC偏移校正，正交校正或IQ振幅校正之类的正交调制的校正。

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