公开(公告)号：US20110038400A1

公开(公告)日：2011-02-17

申请号：US12794124

申请日：2010-06-04

Applicant: Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Takeshi Ohba ,  Hideharu Shako ,  Yasuhito Funyu

Inventor： Hiroyoshi Ishikawa ,  Kazuo Nagatani ,  Hajime Hamada ,  Nobukazu Fudaba ,  Yuichi Utsunomiya ,  Takeshi Ohba ,  Hideharu Shako ,  Yasuhito Funyu

IPC: H04L27/18 ,  H04B1/38

CPC classification number: H04L27/2337

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07486744B2

公开(公告)日：2009-02-03

申请号：US11188782

申请日：2005-07-26

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/49

CPC classification number: H04L27/368 ,  H03F1/3241 ,  H03F1/3294 ,  H03F2200/321 ,  H03F2200/336 ,  H03F2201/3233 ,  H04B2001/0425

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07443923B2

公开(公告)日：2008-10-28

申请号：US11437168

申请日：2006-05-19

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/49

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F2200/321 ,  H03F2201/3233

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07430249B2

公开(公告)日：2008-09-30

申请号：US11546910

申请日：2006-10-13

Applicant: Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

Inventor： Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

IPC: H04L25/49

CPC classification number: H04L5/0016 ,  H04L27/2614 ,  H04L27/28

Abstract: 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.

公开(公告)号：US07418058B2

公开(公告)日：2008-08-26

申请号：US11504503

申请日：2006-08-15

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/49 ,  H03C3/08 ,  H03C1/06

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F3/24 ,  H03F2200/321 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2201/3233 ,  H04L27/368

Abstract: 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.

Abstract translation: 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）。

公开(公告)号：US20080003958A1

公开(公告)日：2008-01-03

申请号：US11546910

申请日：2006-10-13

Applicant: Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

Inventor： Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

IPC: H03C1/52

CPC classification number: H04L5/0016 ,  H04L27/2614 ,  H04L27/28

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070296495A1

公开(公告)日：2007-12-27

申请号：US11843065

申请日：2007-08-22

Applicant: Hideharu SHAKO ,  Yasuhito FUNYU ,  Takeshi OHBA

Inventor： Hideharu SHAKO ,  Yasuhito FUNYU ,  Takeshi OHBA

IPC: H03F1/26

CPC classification number: H03F3/24 ,  H03F1/3247 ,  H03F2200/204 ,  H03F2201/3233 ,  H04B1/0475

Abstract: The number of times of referring to of a storing unit in a distortion compensating apparatus is averaged and temporary degradation of the distortion property is avoided. The distortion compensating apparatus include a pre-distorting unit that applies a distortion compensating process to a transmission signal using a distortion compensation coefficient, a distortion compensation calculating unit that calculates a distortion compensation coefficient based on the transmission signal before the distortion compensation and a feedback fed back from an output of a distortion device, an address generating circuit that produces an address corresponding to the transmission signal, and a storing unit that updates the calculated distortion compensation coefficient to the produced address and that stores the produced address. The address generating circuit produces an address corresponding to the transmission signal by multiplying the power of the transmission signal by a predetermined coefficient and varies the predetermined coefficient.

Abstract translation: 在失真补偿装置中参考存储单元的次数被平均，并且避免了失真特性的临时劣化。 失真补偿装置包括使用失真补偿系数对发送信号应用失真补偿处理的失真前的单位，失真补偿计算单元，其基于失真补偿前的发送信号和反馈馈送来计算失真补偿系数 从失真装置的输出返回地址产生电路，产生与发送信号相对应的地址，以及存储单元，将所计算的失真补偿系数更新为所生成的地址，并存储所产生的地址。 地址产生电路通过将发送信号的功率乘以预定系数来产生对应于发送信号的地址，并改变预定系数。

公开(公告)号：US20070042726A1

公开(公告)日：2007-02-22

申请号：US11319046

申请日：2005-12-27

Applicant: Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

Inventor： Takeshi Ohba ,  Yasuhito Funyu ,  Hideharu Shako

IPC: H04B1/04

CPC classification number: H04L27/368 ,  H03F1/3247 ,  H04L27/364 ,  H04L2027/0016

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060023807A1

公开(公告)日：2006-02-02

申请号：US11107851

申请日：2005-04-18

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/03

CPC classification number: H04L27/368

Abstract: A distortion compensation apparatus shortens the time until start of the transmission. The distortion compensating apparatus for amplifying the transmitted signal after implementation of the distortion compensation process thereto comprises a coefficient memory operable to store coefficients used for the distortion compensation process, an initial value memory operable to store the initial values of the coefficients, and a controller which controls the coefficient memory to store, with limitation, only the coefficients corresponding to the first portion among those stored in the initial value memory for the initial write to the coefficient memory and to store thereafter the coefficients corresponding to the second portion.

Abstract translation: 失真补偿装置缩短直到开始发送的时间。 用于在实施失真补偿处理之后放大发送信号的失真补偿装置包括可操作以存储用于失真补偿处理的系数的系数存储器，可操作以存储系数的初始值的初始值存储器，以及控制器， 控制系数存储器，仅限于存储在初始值存储器中的那些对应于第一部分的系数用于对系数存储器的初始写入，并且此后存储对应于第二部分的系数。

公开(公告)号：US07983636B2

公开(公告)日：2011-07-19

申请号：US12642254

申请日：2009-12-18

Applicant: Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani ,  Yasuhito Funyu ,  Norio Tozawa ,  Tokuro Kubo

Inventor： Hiroyoshi Ishikawa ,  Nobukazu Fudaba ,  Hajime Hamada ,  Kazuo Nagatani ,  Yasuhito Funyu ,  Norio Tozawa ,  Tokuro Kubo

IPC: H01Q11/12 ,  H04K3/00

CPC classification number: H03F1/0266 ,  H03F1/0205 ,  H03F1/0244 ,  H03F1/32 ,  H03F3/24

Abstract: A bias control signal generation unit detects ON and OFF of a transmission signal input to an amplifier and having a property of a burst according to burst information. The bias control signal generation unit controls a bias voltage to be applied to an amplifier such that an idle current flowing through the amplifier can be flowing in a larger amount in a transmission OFF period, and can return to a normal level in a transmission ON period.

Abstract translation: 偏置控制信号生成单元根据突发信息检测输入到放大器的发送信号的接通和关断，并具有突发的性质。 偏置控制信号发生单元控制要施加到放大器的偏置电压，使得流过放大器的空闲电流可以在传输关闭时段内以较大的量流动，并且可以在传输开启周期中恢复到正常电平 。