公开(公告)号：US08442157B2

公开(公告)日：2013-05-14

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: 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：US20100148864A1

公开(公告)日：2010-06-17

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: H03G3/20

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 。

公开(公告)号：US07664473B2

公开(公告)日：2010-02-16

申请号：US11589898

申请日：2006-10-31

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 ,  H04B17/00

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 。

公开(公告)号：US07561856B2

公开(公告)日：2009-07-14

申请号：US10840700

申请日：2004-05-06

Applicant: Masayuki Watabe ,  Yasuhito Funyu ,  Hiroaki Abe ,  Hisato Kawano

Inventor： Masayuki Watabe ,  Yasuhito Funyu ,  Hiroaki Abe ,  Hisato Kawano

IPC: H04B1/04

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F2201/3206 ,  H03F2201/3233 ,  H04B1/707 ,  H04L27/368

Abstract: In a network employing code division multiplex access, a distortion compensation amplifying apparatus is provided which is capable of making quick response to carry out the distortion compensation with high accuracy even if the signal power to be inputted thereto varies rapidly. In this distortion compensation amplifying apparatus, the renewal of a distortion compensation coefficient in a renewing unit is complemented on the basis of a result of amplification in an amplifier with respect to a signal code-division-multiplexed in a pseudo-signal multiplexing unit.

Abstract translation: 在采用码分复用接入的网络中，提供了一种失真补偿放大装置，其能够进行快速响应，即使要输入的信号功率迅速变化，也能够以高精度执行失真补偿。 在该失真补偿放大装置中，相对于在伪信号复用部中的信号码分解多路复用的放大器的放大结果，对更新单元中的失真补偿系数的更新进行补充。

公开(公告)号：US07466763B2

公开(公告)日：2008-12-16

申请号：US11268652

申请日：2005-11-08

Applicant: Yasuhito Funyu ,  Takeshi Ohba ,  Hideharu Shako

Inventor： Yasuhito Funyu ,  Takeshi Ohba ,  Hideharu Shako

IPC: H04L25/49

CPC classification number: H03F1/3247 ,  H03F2201/3233

Abstract: An address frequency operation unit counts frequencies of occurrences of addresses output by an address conversion unit 14, and a CPU 16 rewrites an address conversion table in the address conversion unit 14 based on a comparison between the counted result and a threshold value. When the frequency of the address is lower than the threshold value, the frequency of occurrence of an output address is increased by increasing the number of input addresses corresponding to one output address. Also, distortion in an output signal which is fed back is detected and the address conversion table is rewritten so that the distortion is decreased.

Abstract translation: 地址频率操作单元对由地址转换单元14输出的地址的出现频率进行计数，并且CPU16基于计数结果和阈值之间的比较来重写地址转换单元14中的地址转换表。 当地址的频率低于阈值时，通过增加对应于一个输出地址的输入地址的数量来增加输出地址的出现频率。 此外，检测反馈的输出信号的失真，并且改写地址转换表，使得失真减小。

公开(公告)号：US07447274B2

公开(公告)日：2008-11-04

申请号：US11169899

申请日：2005-06-30

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/49

CPC classification number: H03F1/3247 ,  H03F2201/3233 ,  H04L27/368

Abstract: Provided is a distortion compensation apparatus to prevent divergence of distortion compensation coefficients caused by an abnormal distortion compensation coefficient value. The distortion compensation apparatus includes a storage for storing a distortion compensation coefficient in a specified write address, and outputting a distortion compensation coefficient stored in a specified readout address; a predistortion portion for performing distortion compensation processing onto a transmission signal, using the distortion compensation coefficient being output from the storage; and a distortion compensator for calculating a distortion compensation coefficient based on the transmission signal before the distortion compensation processing and the transmission signal after being amplified by an amplifier. The distortion compensator further reads out the distortion compensation coefficients stored in the storage, extracts a distortion compensation coefficient satisfying a predetermined condition, and performs correction processing to reduce the amplitude of the extracted distortion compensation coefficient.

Abstract translation: 提供了一种用于防止由异常失真补偿系数值引起的失真补偿系数发散的失真补偿装置。 失真补偿装置包括用于在指定的写入地址中存储失真补偿系数并输出存储在指定的读出地址中的失真补偿系数的存储器; 预失真部分，用于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; 以及失真补偿器，用于基于在失真补偿处理之前的发送信号和放大器放大后的发送信号来计算失真补偿系数。 失真补偿器还读出存储在存储器中的失真补偿系数，提取满足预定条件的失真补偿系数，并执行校正处理以减小所提取的失真补偿系数的幅度。

公开(公告)号：US20070274471A1

公开(公告)日：2007-11-29

申请号：US11528354

申请日：2006-09-28

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04M1/64

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2201/3233

Abstract: The apparatus includes: distortion amount detector which detects the amount of distortion of an output signal of an amplifier; parameter holder which holds a parameter having been set therein, the parameter holder being capable of varying the difference according to the parameter set therein; parameter corrector which corrects the parameter held in the parameter holder in such a manner that the distortion amount detected by the distortion amount detector is improved; noise component detector which detects a noise component that can be caused in the output signal resulting from a quadrature modulation; and noise component remover which performs processing for removing the noise component detected by the noise component detector. This arrangement makes it possible to suppress image frequency component generation in an output signal of the amplifier accompanying quadrature modulation and to optimize parameters in distortion compensation.

Abstract translation: 该装置包括：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，其保持已经设置的参数，所述参数保持器能够根据其中设置的参数来改变所述差异; 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; 噪声分量检测器，其检测由正交调制产生的输出信号中可能引起的噪声分量; 以及噪声分量去除器，其执行用于去除由噪声分量检测器检测到的噪声分量的处理。 这种布置使得可以抑制伴随正交调制的放大器的输出信号中的图像频率分量生成并且优化失真补偿中的参数。

公开(公告)号：US20070188225A1

公开(公告)日：2007-08-16

申请号：US11437188

申请日：2006-05-19

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H03F1/26

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F2200/336 ,  H03F2200/465 ,  H03F2201/3227 ,  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 distortion 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; a power monitor which monitors output power of the amplifier or a factor of variation in the power; and a controller which halts, if a monitoring result by the power monitor is smaller than a specified threshold value, the correction of the parameter. 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; 监视放大器的输出功率或电源变化的功率监视器; 以及控制器，如果功率监视器的监视结果小于指定的阈值，则停止参数的校正。 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：US20060209983A1

公开(公告)日：2006-09-21

申请号：US11169899

申请日：2005-06-30

Applicant: Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

Inventor： Hideharu Shako ,  Yasuhito Funyu ,  Takeshi Ohba

IPC: H04L25/03

CPC classification number: H03F1/3247 ,  H03F2201/3233 ,  H04L27/368

Abstract: Provided is a distortion compensation apparatus to prevent divergence of distortion compensation coefficients caused by an abnormal distortion compensation coefficient value. The distortion compensation apparatus includes a storage for storing a distortion compensation coefficient in a specified write address, and outputting a distortion compensation coefficient stored in a specified readout address; a predistortion portion for performing distortion compensation processing onto a transmission signal, using the distortion compensation coefficient being output from the storage; and a distortion compensator for calculating a distortion compensation coefficient based on the transmission signal before the distortion compensation processing and the transmission signal after being amplified by an amplifier. The distortion compensator further reads out the distortion compensation coefficients stored in the storage, extracts a distortion compensation coefficient satisfying a predetermined condition, and performs correction processing to reduce the amplitude of the extracted distortion compensation coefficient.

Abstract translation: 提供了一种用于防止由异常失真补偿系数值引起的失真补偿系数发散的失真补偿装置。 失真补偿装置包括用于在指定的写入地址中存储失真补偿系数并输出存储在指定的读出地址中的失真补偿系数的存储器; 预失真部分，用于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; 以及失真补偿器，用于基于在失真补偿处理之前的发送信号和放大器放大后的发送信号来计算失真补偿系数。 失真补偿器还读出存储在存储器中的失真补偿系数，提取满足预定条件的失真补偿系数，并执行校正处理以减小所提取的失真补偿系数的幅度。

公开(公告)号：US07405680B2

公开(公告)日：2008-07-29

申请号：US10851707

申请日：2004-05-20

Applicant: Yasuhito Funyu ,  Hiroaki Abe ,  Takeshi Ohba ,  Tomohiro Nakamura

Inventor： Yasuhito Funyu ,  Hiroaki Abe ,  Takeshi Ohba ,  Tomohiro Nakamura

IPC: H03M1/06

CPC classification number: H03F1/3247 ,  H03F2201/3233

Abstract: A distortion compensator updating and selecting a distortion compensation coefficient applied to a digital transmission signal so as to reduce the difference between the digital transmission signal and a digital feedback signal is disclosed. The distortion compensator includes a control part that controls the level of an input signal to an analog-to-digital conversion part outputting the digital feedback signal in accordance with the magnitude of the amplitude of the digital transmission signal.

Abstract translation: 公开了一种失真补偿器，其更新和选择应用于数字传输信号的失真补偿系数，以便减小数字传输信号和数字反馈信号之间的差异。 失真补偿器包括控制部分，控制部分根据数字传输信号幅度的幅度来控制输入到模拟数字转换部分的输入信号的电平，该部分输出数字反馈信号。