专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20050226346A1 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US20050226346A1
公开(公告)日：2005-10-13
申请号：US11149730
申请日：2005-06-10
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H03F1/32 , H03F1/34 , H03F3/24 , H04J1/00 , H04J11/00 , H04L27/26 , H04L27/36 , H04L25/03
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： Disclosed is a distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：公开了一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算出的失真补偿系数h N + 1（p）被存储在系数存储器中之前，假定将使用失真补偿执行失真补偿系数h n + 1（p）。然后，预先确定将通过该失真补偿获得的信号x（t）* h N + 1（p）将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

22. 发明授权

US06907085B2 Activation method of communications apparatus with a non-linear distortion compensation device 有权
标题翻译：具有非线性失真补偿装置的通信装置的激活方法
公开(公告)号：US06907085B2
公开(公告)日：2005-06-14
申请号：US09805870
申请日：2001-03-14
申请人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi
发明人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi
IPC分类号： H03F1/32 , H04B1/04 , H04L27/00 , H04L27/20 , H04L27/26 , H04B15/00
CPC分类号： H03F1/3247 , H03F1/3282 , H03F1/34 , H03F3/24 , H04B2001/0433
摘要： First, a digital section constituting a linearizer is activated. Then, a feedback loop for updating a distortion compensation coefficient is opened. Then, the analog section on the antenna side is activated from an ADC, including a PA, etc., or a DAC. Then, both the ATT value of an ATT installed in a feedback route for updating the distortion compensation coefficient and the signal delay amount of a signal delay unit are adjusted to make a state such that the distortion compensation coefficient can be accurately updated. Then, the feedback loop is closed, a distortion compensation table having the distortion compensation coefficient as an entry is generated and after the generation is completed, the operation shifts to the normal operation.
摘要翻译：首先，构成线性化器的数字部分被激活。然后，打开用于更新失真补偿系数的反馈回路。然后，天线侧的模拟部分从包括PA等的ADC或DAC激活。然后，调整安装在用于更新失真补偿系数的反馈路径中的ATT的ATT值和信号延迟单元的信号延迟量，使得能够精确地更新失真补偿系数的状态。然后，反馈回路闭合，生成具有作为入口的失真补偿系数的失真补偿表，并且在生成完成之后，操作转移到正常操作。

23. 发明授权

US06717464B2 Distortion compensating apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US06717464B2
公开(公告)日：2004-04-06
申请号：US10256833
申请日：2002-09-27
申请人： Nobukazu Fudaba , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Nobukazu Fudaba , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3241 , H03F1/3247 , H03F1/3294 , H03F2201/3233
摘要： In a distortion compensating apparatus for adaptively compensating a non-linear distortion of a circuit having the non-linear distortion, an adaptive equalizing processor adaptively selects, from among a filter coefficient group preliminarily held in a memory, a filter coefficient which makes an out-of-band power of an output signal reduced to be set in a digital filter.
摘要翻译：在用于自适应地补偿具有非线性失真的电路的非线性失真的失真补偿装置中，自适应均衡处理器从预先保持在存储器中的滤波器系数组中自适应地选择滤波器系数，输出信号的带内功率减少以设置在数字滤波器中。

24. 发明授权

US07551687B2 Distortion compensating apparatus 失效
标题翻译：失真补偿装置
公开(公告)号：US07551687B2
公开(公告)日：2009-06-23
申请号：US11149730
申请日：2005-06-10
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa
IPC分类号： H04K1/02
CPC分类号： H03F1/3247 , H03F2201/3233
摘要： A distortion compensating apparatus for correcting the size of a distortion compensation coefficient in such a manner that a transmit signal that has undergone distortion compensation will not exceed the dynamic range of a DA converter. Specifically, before a distortion compensation coefficient hn+1(p) that has been calculated by a calculation unit is stored in a coefficient memory, an assumption is made that distortion compensation will be performed using the distortion compensation coefficient hn+1(p). Then it is determined beforehand whether a signal x(t)*hn+1(p) that will be obtained by this distortion compensation will exceed the limit of a DA converter. If the limit will be exceeded, the size of the distortion compensation coefficient is reduced by a correction unit, the corrected distortion compensation coefficient is stored in the memory and the transmit signal is corrected using the stored distortion compensation coefficient.
摘要翻译：一种失真补偿装置，用于以经过失真补偿的发送信号不会超过DA转换器的动态范围的方式校正失真补偿系数的大小。具体地说，在由计算单元计算的失真补偿系数hn + 1（p）被存储在系数存储器中之前，假定将使用失真补偿系数hn + 1（p）进行失真补偿。然后，预先确定将通过该失真补偿获得的信号x（t）* hn + 1（p）是否将超过DA转换器的极限。如果超过极限，则通过校正单元来减小失真补偿系数的大小，将校正的失真补偿系数存储在存储器中，并使用所存储的失真补偿系数校正发送信号。

25. 发明授权

US07254377B2 Parallel operation system of transmission amplifier 有权
标题翻译：传输放大器并联运行系统
公开(公告)号：US07254377B2
公开(公告)日：2007-08-07
申请号：US10015369
申请日：2001-12-12
申请人： Satoshi Maruyama , Osamu Mita , Yasuyuki Oishi , Tokuro Kubo , Norio Tozawa , Fumihiko Kobayashi
发明人： Satoshi Maruyama , Osamu Mita , Yasuyuki Oishi , Tokuro Kubo , Norio Tozawa , Fumihiko Kobayashi
IPC分类号： H04B1/04
CPC分类号： H03F3/602 , H03F1/3241 , H03F1/3247 , H04B1/0483 , H04B2001/0425
摘要： A parallel operation system of transmission amplifiers enable the parallel running by the two distortion compensation amplifiers using the digital pre-distorter system and to provide a parallel operation system of the transmission amplifiers that makes it possible to switch to respective single running easily. The parallel operation system includes first and second transmission amplifiers which receive common input signals for outputting amplified signals from respective ones; and a coupling unit which combines outputs of the first and second transmission amplifiers, to provide as its output; the first and second transmission amplifiers each having a main amplifier; and a modulation unit disposed on the input side of the main amplifier; wherein the output of one of the modulation units included in the first and second transmission amplifiers is fed in common to the main amplifiers included in the first and second transmission amplifiers.
摘要翻译：传输放大器的并行操作系统使得能够通过使用数字预失真器系统的两个失真补偿放大器的并行运行，并且提供可以容易地切换到相应的单个运行的发送放大器的并行操作系统。并行操作系统包括第一和第二发送放大器，其接收用于从相应输入信号输出放大信号的公共输入信号; 以及耦合单元，其组合第一和第二发送放大器的输出，以提供其输出; 第一和第二发送放大器各自具有主放大器; 以及调制单元，设置在所述主放大器的输入侧; 其中包括在第一和第二发送放大器中的调制单元之一的输出被共同馈送到包括在第一和第二发送放大器中的主放大器。

26. 发明授权

US06980604B2 Transmission device and transmission method 失效
标题翻译：传输装置及传输方式
公开(公告)号：US06980604B2
公开(公告)日：2005-12-27
申请号：US09973613
申请日：2001-10-09
申请人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
发明人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
IPC分类号： H03M1/66 , H03F1/32 , H04B1/04 , H04L5/06 , H04L27/01 , H04L25/49
CPC分类号： H04L5/06 , H03F1/3247
摘要： The present invention provides a transmission device for predistorting a digital signal in order to compensate distortion, then amplifying and transmitting it. A digital input signal is converted to a first analog signal by a first D/A converter. Separately, the digital input signal is also subjected to predistortion. A compensating signal is then generated from the digital input signal and the predistorted signal. The compensating signal generated thereby is converted into a second analog signal by a second D/A converter. The first analog signal and second analog signal are then added, this addition operation giving a compensated analog transmission signal. This analog transmission signal is supplied to the amplifier for amplification, and then transmitted via an antenna.
摘要翻译：本发明提供了一种用于对数字信号进行预失真以便补偿失真，然后进行放大和发送的传输装置。数字输入信号由第一D / A转换器转换成第一模拟信号。另外，数字输入信号也经受预失真。然后从数字输入信号和预失真信号产生补偿信号。由此生成的补偿信号由第二D / A转换器转换成第二模拟信号。然后添加第一模拟信号和第二模拟信号，该相加操作给出补偿的模拟传输信号。该模拟传输信号被提供给放大器用于放大，然后经由天线发送。

27. 发明授权

US06657493B2 Distortion compensation apparatus and distortion compensation method 有权
标题翻译：失真补偿装置和失真补偿方法
公开(公告)号：US06657493B2
公开(公告)日：2003-12-02
申请号：US10116633
申请日：2002-04-04
申请人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
发明人： Takayoshi Ode , Yasuyuki Oishi , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F1/3294
摘要： A distortion compensation apparatus returns a part of an amplified output signal of a power amplifier amplifying a transmission signal, reads a distortion compensation signal from a distortion compensation table, multiplies the transmission signal with the distortion compensation signal thereof, and inputs the signal to the power amplifier. The distortion compensation signal corresponding to a signal calculated based on an error signal that is a difference between the transmission signal and the amplified output signal, the distortion compensation signal from the distortion compensation table and the step size parameter, and to a power of the transmission signal. The distortion compensation apparatus comprises a &mgr; control part including a fast Fourier transformation part that obtains a spectrum of the amplified output signal, a calculation part that calculates an adjacent channel leakage power ratio based on the spectrum, and a &mgr; adjusting part that varies the step size parameter by comparing the calculated adjacent leakage power ratio with a threshold value.
摘要翻译：失真补偿装置返回放大发送信号的功率放大器的放大输出信号的一部分，从失真补偿表读出失真补偿信号，将发送信号与其失真补偿信号相乘，并将该信号输入到功率放大器对应于基于作为发送信号和放大输出信号之间的差的误差信号，来自失真补偿表的失真补偿信号和步长参数而计算出的信号的失真补偿信号，以及发送功率的失真补偿信号信号。失真补偿装置包括：mu控制部，包括获取放大的输出信号的频谱的快速傅里叶变换部，基于该频谱计算相邻信道泄漏功率比的计算部;以及改变步骤的mu调整部通过将计算的相邻泄漏功率比与阈值进行比较来确定尺寸参数。

28. 发明授权

US07756216B2 Signal peak voltage suppression apparatus 有权
标题翻译：信号峰值电压抑制装置
公开(公告)号：US07756216B2
公开(公告)日：2010-07-13
申请号：US11443072
申请日：2006-05-31
申请人： Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani , Nobukazu Fudaba , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Hajime Hamada , Kazuo Nagatani , Nobukazu Fudaba , Tokuro Kubo
IPC分类号： H04L25/03
CPC分类号： H04L27/2624 , H03G7/00 , H03G11/00
摘要： As in a conventional technology, a hard clipping process and a filtering process are performed on a transmission signal. An original transmission signal is subtracted from a signal on which the processes have been performed, and an inverse sign signal to the suppressed signal is retrieved. By giving a gain to the signal, and adding up to the original transmission signal, a peak voltage is suppressed. The gain can be a ratio of a difference signal between a hard clipped signal and an original transmission signal to a signal of suppression of a filtered signal from the original transmission signal, or a value determined by a simulation depending on the cutoff frequency of a low pass filter used in the filtering process.
摘要翻译：像传统技术一样，对发送信号执行硬削波处理和滤波处理。从已经执行了处理的信号中减去原始发送信号，并且检索到抑制信号的逆信号。通过给信号增益，并加上原始的传输信号，抑制峰值电压。增益可以是硬削波信号和原始发送信号之间的差分信号与来自原始发送信号的滤波信号的抑制信号的比率，或者通过根据低频的截止频率的模拟确定的值过滤器用于过滤过程。

29. 发明授权

US07447485B2 Device and method for controlling a voltage control signal 有权
标题翻译：用于控制电压控制信号的装置和方法
公开(公告)号：US07447485B2
公开(公告)日：2008-11-04
申请号：US11367379
申请日：2006-03-06
申请人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Tokuro Kubo
发明人： Hiroyoshi Ishikawa , Kazuo Nagatani , Hajime Hamada , Nobukazu Fudaba , Tokuro Kubo
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03F1/0222 , H03F1/025 , H03F2200/102 , H03F2200/504 , H03F2200/511
摘要： A device is disclosed that includes an amplification part for a linear transmitter, the amplification part being configured to amplify a transmission signal in accordance with a supply voltage control signal; a generation part configured to generate a power supply signal showing the level of the transmission signal; and a control part configured to output the supply voltage control signal based on the power supply signal. The control part includes a storage part configured to store a series of values of the power supply signal belonging to a time range including a certain point of time; and an output part configured to output a maximum one of a predetermined number of values of the series of values of the power supply signal as the supply voltage control signal at the certain point of time.
摘要翻译：公开了一种包括用于线性发送器的放大部件的装置，所述放大部件被配置为根据电源电压控制信号放大发送信号; 生成部，被配置为生成表示所述发送信号的电平的电源信号; 以及控制部，被配置为基于所述电源信号输出所述电源电压控制信号。控制部包括：存储部，被配置为存储属于包括某个时间点的时间范围的电源信号的一系列值; 以及输出部，其被配置为在所述特定时间点输出所述电源信号的所述一系列值的预定数量的值中的最大值作为所述电源电压控制信号。

30. 发明申请

US20080013646A1 Peak suppression control apparatus 有权
标题翻译：峰值抑制控制装置
公开(公告)号：US20080013646A1
公开(公告)日：2008-01-17
申请号：US11822946
申请日：2007-07-11
申请人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
发明人： Hajime Hamada , Tokuro Kubo , Kazuo Nagatani , Hiroyoshi Ishikawa , Nobukazu Fudaba
IPC分类号： H04L25/49
CPC分类号： H04B1/0475
摘要： A peak suppression threshold value control unit receives an input of quality requirement information, such as a modulation system and coding ratio, from a baseband signal generation unit, determines a threshold value of a peak suppression unit based on the quality requirement information and outputs the threshold value to a peak suppression unit. The peak suppression unit applies a peak suppression control to a baseband signal input from a baseband signal generation unit based on the threshold value and outputs a signal (i.e., a peak suppression signal) applied by the peak suppression process.
摘要翻译：峰值抑制阈值控制单元从基带信号生成单元接收诸如调制系统和编码率的质量要求信息的输入，基于质量要求信息确定峰值抑制单元的阈值，并输出阈值值到峰值抑制单元。峰值抑制单元基于阈值对从基带信号生成单元输入的基带信号进行峰值抑制控制，并输出通过峰值抑制处理施加的信号（即，峰值抑制信号）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式