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公开(公告)号：US06366765B1
公开(公告)日：2002-04-02
申请号：US09276712
申请日：1999-03-26
申请人： Naoki Hongo , Tetsuhiko Miyatani , Kenzo Urabe , Zhou Changming
发明人： Naoki Hongo , Tetsuhiko Miyatani , Kenzo Urabe , Zhou Changming
IPC分类号： H04B118
CPC分类号： H03G3/3078 , H03G3/3068 , H03J3/08 , H04B1/30
摘要： The present invention intends to provide a receiver which receives a signal by switching a plurality of communication systems, wherein a circuit scale is reduced to intend to the miniaturization of a device. The receiver converts a received signal to a base band signal by a local oscillation frequency based on the selected communication system by a mixer, limits a band by an LPF through which signals of all communication systems can pass, performs a band limitation based on the communication system by weighting with a tap coefficient based on the selected communication system to synthesis by a transversal filter, and demodulates a signal by a demodulation system based on the selected communication system by a demodulating unit.
摘要翻译： 本发明旨在提供一种通过切换多个通信系统来接收信号的接收机，其中减小了电路规模以意图使设备的小型化。 接收机通过混频器基于所选择的通信系统将接收到的信号转换为基带信号，通过本地振荡频率，通过所有通信系统的信号可以通过的LPF限制频带，基于通信来执行频带限制 系统，通过基于所选择的通信系统的抽头系数进行加权以通过横向滤波器进行合成，并且由解调单元基于所选择的通信系统由解调系统解调信号。
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公开(公告)号：US06301292B1
公开(公告)日：2001-10-09
申请号：US09290398
申请日：1999-04-13
申请人： Ichiro Imaizumi , Tetsuhiko Miyatani , Shunji Abe , Kenzo Urabe , Hitoshi Kato
发明人： Ichiro Imaizumi , Tetsuhiko Miyatani , Shunji Abe , Kenzo Urabe , Hitoshi Kato
IPC分类号： H04L2730
CPC分类号： H04B1/70753 , H04B1/7095 , H04B2201/70709
摘要： A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which detects a synchronization phase from high-order small bits of the N bits and outputs synchronization phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.
摘要翻译： 描述了可以减小电路规模和功耗的解扩电路。 该电路包括将CDMA调制的模拟信号转换为N位的数字信号的A / D转换器，以及从N位的高阶小位检测同步相位的搜索器，并将同步相位信息输出到控制电路 。 控制电路根据相位信息，向滑动相关器发送允许解扩的信号。 滑动相关器对由A / D转换器输出的N位数字信号进行解扩，并输出所得的相关输出作为解扩信号。
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公开(公告)号：US5956333A
公开(公告)日：1999-09-21
申请号：US781631
申请日：1997-01-10
申请人： Changming Zhou , Guoliang Shou , Kenzo Urabe , Tetsuhiko Miyatani
发明人： Changming Zhou , Guoliang Shou , Kenzo Urabe , Tetsuhiko Miyatani
IPC分类号： H03H17/00 , H04B1/7107 , H04J13/00 , H04K1/00
CPC分类号： H04B1/71075
摘要： A multi-user demodulator eliminates synchronization problems without interference cancellation. A threshold process is applied to a despread signal to extract each user's signal. The extracted signals are respread, and those respread signals other than a specifier user's signal are subtracted from the received signal to ideally extract the specific user's signal.
摘要翻译： 多用户解调器消除了无干扰消除的同步问题。 对解扩信号应用阈值处理以提取每个用户的信号。 提取的信号被重新发送，并且从接收到的信号中减去除指定者用户信号之外的那些再现信号，以理想地提取特定用户的信号。
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公开(公告)号：US06636557B2
公开(公告)日：2003-10-21
申请号：US09947344
申请日：2001-09-07
申请人： Ichiro Imaizumi , Tetsuhiko Miyatani , Shunji Abe , Kenzo Urabe , Hitoshi Kato
发明人： Ichiro Imaizumi , Tetsuhiko Miyatani , Shunji Abe , Kenzo Urabe , Hitoshi Kato
IPC分类号： H04B169
CPC分类号： H04B1/70753 , H04B1/7095 , H04B2201/70709
摘要： A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which defects a synchronization phase from high-order small bits of the N bits and outputs synchronozation phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.
摘要翻译： 描述了可以减小电路规模和功耗的解扩电路。 该电路包括将CDMA调制的模拟信号转换成N位的数字信号的A / D转换器，以及从N位的高阶小位缺陷同步相位的搜索器，并将同步相位信息输出到控制电路 。 控制电路根据相位信息，向滑动相关器发送允许解扩的信号。 滑动相关器对由A / D转换器输出的N位数字信号进行解扩，并输出所得的相关输出作为解扩信号。
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5.发明申请Spectrum Analyzing Method, Distortion Detector and Distortion Compensation Amplifying Device 失效频谱分析方法，失真检测器和失真补偿放大器公开(公告)号：US20080068080A1
公开(公告)日：2008-03-20
申请号：US11795989
申请日：2006-08-10
IPC分类号： H03F1/26
CPC分类号： G01R23/20 , H03F1/32 , H03F1/3247 , H03F2200/102 , H03F2200/207
摘要： The invention provides a spectrum analyzing method, a distortion detector and a distortion compensation amplifying device for performing time/frequency conversion processing at high speed, and reducing a convergent time of a compensation coefficient. The distortion detector for detecting distortion in a frequency area with respect to an input signal includes a time window processing section for multiplying the input signal by a time window; an averaging processing section for averaging an output of the time window processing section; an FFT processing section 52 for converting an output of the averaging processing section from a time area to a frequency area; and a distortion extracting section 53 for extracting a distortion component from an output of the FFT processing section 52.
摘要翻译： 本发明提供一种用于高速进行时间/频率转换处理的频谱分析方法，失真检测器和失真补偿放大装置，并减少补偿系数的收敛时间。 用于检测相对于输入信号的频率区域中的失真的失真检测器包括用于将输入信号乘以时间窗口的时间窗处理部分; 平均处理部分，用于对时间窗处理部分的输出进行平均; FFT处理部分52，用于将平均处理部分的输出从时间区域转换为频率区域; 以及用于从FFT处理部分52的输出中提取失真分量的失真提取部分53。
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公开(公告)号：US06856196B2
公开(公告)日：2005-02-15
申请号：US10600594
申请日：2003-06-23
申请人： Yoichi Okubo , Kiyoshi Funada , Yasuo Sera , Masaki Suto , Masato Horaguchi , Kazuyoshi Sato , Toshio Takada , Tetsuhiko Miyatani , Naoki Hongo
发明人： Yoichi Okubo , Kiyoshi Funada , Yasuo Sera , Masaki Suto , Masato Horaguchi , Kazuyoshi Sato , Toshio Takada , Tetsuhiko Miyatani , Naoki Hongo
CPC分类号： H03F1/3247 , H03F1/3282 , H03F2200/102
摘要： A distortion compensator that compensates for distortion arising in a main amplifier 10 that amplifies a signal effectively compensates for third order distortion which is unbalanced between the higher frequency band and lower frequency band. An amplitude detector 3 detects the level of a signal subject to amplification and a signal level change direction detection means 7 detects the direction of change in the level of the signal. A signal level change control means 4-8 stores the correspondence between the signal level and the mode of changing the signal in order to compensate for distortion for when the direction of change in the signal level is positive and when it is negative, and controls a signal change means 9 so that the amplitude and phase of the signal is changed in a mode of changing the signal corresponding to the detected direction of change in the signal level and the detected signal level. A signal change control content updating means 11-13 updates the content of this correspondence so that the distortion contained in the signal after amplification is reduced.
摘要翻译： 补偿放大信号的主放大器10中出现的失真的失真补偿器有效地补偿在较高频带和较低频带之间不平衡的三阶失真。 振幅检测器3检测经放大的信号的电平，信号电平变化方向检测装置7检测信号电平的变化方向。 信号电平变化控制装置4-8存储信号电平和改变信号的模式之间的对应关系，以便当信号电平的变化方向为正时和当它为负时补偿失真，并且控制一个 信号改变装置9，使得信号的幅度和相位在改变与检测到的信号电平方向和检测信号电平相对应的信号的模式下改变。 信号改变控制内容更新装置11-13更新该对应的内容，使得放大后的信号中包含的失真减少。
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7.发明授权Spectrum analyzing method, distortion detector and distortion compensation amplifying device 失效频谱分析方法，失真检测和失真补偿放大装置公开(公告)号：US07696761B2
公开(公告)日：2010-04-13
申请号：US11795989
申请日：2006-08-10
CPC分类号： G01R23/20 , H03F1/32 , H03F1/3247 , H03F2200/102 , H03F2200/207
摘要： The invention provides a spectrum analyzing method, a distortion detector and a distortion compensation amplifying device for performing time/frequency conversion processing at high speed, and reducing a convergent time of a compensation coefficient. The distortion detector for detecting distortion in a frequency area with respect to an input signal includes a time window processing section for multiplying the input signal by a time window; an averaging processing section for averaging an output of the time window processing section; an FFT processing section for converting an output of the averaging processing section from a time area to a frequency area; and a distortion extracting section for extracting a distortion component from an output of the FFT processing section.
摘要翻译： 本发明提供一种用于高速进行时间/频率转换处理的频谱分析方法，失真检测器和失真补偿放大装置，并减少补偿系数的收敛时间。 用于检测相对于输入信号的频率区域中的失真的失真检测器包括用于将输入信号乘以时间窗的时间窗处理部分; 平均处理部分，用于对时间窗处理部分的输出进行平均; FFT处理部分，用于将平均处理部分的输出从时间区域转换为频率区域; 以及用于从FFT处理部分的输出中提取失真分量的失真提取部分。
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公开(公告)号：US07098734B2
公开(公告)日：2006-08-29
申请号：US10947271
申请日：2004-09-23
IPC分类号： H03F1/26
CPC分类号： H03F1/3258 , H03F2201/3224
摘要： A memory effect distortion component compensating unit compensates for a distortion component caused by a memory effect of an amplifier by using a time difference of results from raising an input signal to even power. For example, the amplifier may include a memory effect distortion component compensating unit having an even power raising unit for raising an input signal to even power, an even power raising result delaying unit for delaying a signal of a result of even power raising, an even power raising result time difference detecting unit for detecting a difference between a signal of an even power raising result and a delayed signal, an input signal multiplying unit for multiplying a signal of a detection result by an input signal, a distortion compensation coefficient multiplying unit for multiplying a signal of a multiplication result by a distortion compensation coefficient, and a distortion compensation coefficient multiplication result adding unit for adding an input signal and a signal of a multiplication result.
摘要翻译： 存储器效应失真分量补偿单元通过使用将输入信号提升为均匀功率的结果的时间差来补偿由放大器的存储器效应引起的失真分量。 例如，放大器可以包括具有用于将输入信号提升为均匀功率的均匀上电单元的存储器效应失真分量补偿单元，用于延迟均匀功率提升的结果的信号的均匀上电结果延迟单元， 功率提升结果时间差检测单元，用于检测均匀功率提升结果的信号与延迟信号之间的差;输入信号乘法单元，用于将检测结果的信号乘以输入信号;失真补偿系数乘法单元，用于 将相乘结果的信号乘以失真补偿系数，以及用于将输入信号和乘法结果的信号相加的失真补偿系数乘法结果相加结果单元。
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公开(公告)号：US06959174B2
公开(公告)日：2005-10-25
申请号：US10229017
申请日：2002-08-28
申请人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Tetsuhiko Miyatani
发明人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Tetsuhiko Miyatani
CPC分类号： H03F1/3247 , H03F1/3252 , H04B1/0475 , H04B1/62
摘要： To provide an amplifying device which is reduced in size, weight and cost and which can improve the distortion compensation performance. In the amplifying device, input signals are each subjected to digital orthogonal modulation using an IF and further to offset rotation processing in digital orthogonal modulators, then bifurcated into a main signal system and a control system, and detection of a power value is performed at an IF band in a power detecting section of the control system. Therefore, offset rotation processing of the input signals in the power detection is not required, so that a structure for matching phases of a multi-carrier signal and a power value signal is not required, resulting in improving the distortion compensation performance without using an analog delay line.
摘要翻译： 提供一种减小尺寸，重量和成本并且可以改善失真补偿性能的放大装置。 在放大装置中，输入信号各自使用IF进行数字正交调制，并且进一步抵消数字正交调制器中的旋转处理，然后分支为主信号系统和控制系统，并且功率值的检测在 中频带在控制系统的功率检测部分。 因此，不需要功率检测中的输入信号的偏移旋转处理，因此不需要用于匹配多载波信号和功率值信号的相位的结构，从而提高失真补偿性能而不使用模拟 延迟线。
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公开(公告)号：US06931239B2
公开(公告)日：2005-08-16
申请号：US10205563
申请日：2002-07-26
申请人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Masato Horaguchi , Toshio Takada , Tetsuhiko Miyatani
发明人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Masato Horaguchi , Toshio Takada , Tetsuhiko Miyatani
CPC分类号： H03G11/04 , H04L27/2623
摘要： A peak limiter for use in a system for amplifying a multi-carrier signal receives a baseband signal of each carrier of the multi-carrier signal. The multi-carrier signal is computationally estimated to have carriers combined in an RF band, and obtains power information of the multi-carrier signal to limit an amplitude of the baseband signal based on the power information of the estimated multi-carrier signal to thereby provide peak-limited baseband signals. Thus, the distortion generated by performing the unnecessary peak limitation can be effectively prevented to thereby improve the reliability of the entire system.
摘要翻译： 用于放大多载波信号的系统中的峰值限制器接收多载波信号的每个载波的基带信号。 计算地估计多载波信号使载波组合在RF频带中，并且基于估计的多载波信号的功率信息获得多载波信号的功率信息以限制基带信号的幅度，从而提供 峰值限制基带信号。 因此，可以有效地防止通过执行不必要的峰值限制而产生的失真，从而提高整个系统的可靠性。
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