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公开(公告)号：KR1020130063918A
公开(公告)日：2013-06-17
申请号：KR1020110130541
申请日：2011-12-07
Applicant: 한국전자통신연구원
IPC: H04B1/62
CPC classification number: H04B1/62 , H03F1/3241 , H03F3/245 , H03F2201/3233
Abstract: PURPOSE: A digital pre-distortion device and a method thereof are provided to simultaneously achieve high-linearity and high-efficiency. CONSTITUTION: A DPD(Digital Pre-Distortion) algorithm execution unit(120) calculates the maximum output value and average output value of an output signal for an input signal of a power amplifier during a predetermined period. The DPD algorithm execution unit obtains the reversed function of the output function based on a reference value between an average input value and a maximum input value. A pre-compensation device(110) distorts a source input signal by using information corresponding to the reversed function of the output signal. The pre-compensation device inputs the pre-distortion signal as an input signal of the power amplifier. [Reference numerals] (110) Pre-compensation device; (112) Look-up table; (120) DPD algorithm execution unit
Abstract translation: 目的：提供数字预失真装置及其方法，以同时实现高线性度和高效率。 构成：DPD（数字预失真）算法执行单元（120）在预定时段内计算功率放大器的输入信号的输出信号的最大输出值和平均输出值。 DPD算法执行单元基于平均输入值和最大输入值之间的参考值来获得输出函数的反转函数。 预补偿装置（110）通过使用与输出信号的反转功能相对应的信息来扭曲源输入信号。 预补偿装置输入预失真信号作为功率放大器的输入信号。 （附图标记）（110）预补偿装置; （112）查表; （120）DPD算法执行单元
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公开(公告)号：KR1020130058296A
公开(公告)日：2013-06-04
申请号：KR1020110124223
申请日：2011-11-25
Applicant: 한국전자통신연구원
CPC classification number: H03L7/0805 , H03L7/085 , H03L7/0898 , H03L7/093 , H03L7/099
Abstract: PURPOSE: A phase locked loop device capable of improving a phase noise property is provided to supply a high quality clock signal or a carrier, thereby maximizing the transmission efficiency of a mobile communication system. CONSTITUTION: A phase locked loop device(100) comprises a phase detector(110), a charge pump(120), a loop filter(130), a voltage control oscillator(140), a divider(150), and an injection locked frequency divider(160). The phase detector generates a phase difference signal which corresponds to the phase difference by comparing an inputted reference frequency clock and an oscillation signal which is divided and fed back. The charge pump produces a voltage signal with reference to the phase difference signal. The loop filter filters a signal of a specific frequency from the voltage signal. The voltage control oscillator produces the oscillation signal of a frequency which is changed according to the voltage level of an output signal of the loop filter. The divider divides the oscillation signal and provides the oscillation signal to the phase detector. The injection locked frequency divider divides the frequency of the oscillation signal in the rear end of the voltage control oscillator by an odd multiple and provides the divided frequency to the output signal. [Reference numerals] (110) Phase detector; (120) Charge pump; (130) Loop filter; (140) Voltage control oscillator; (150) Divider; (160) Injection locked frequency divider(ILFD); (AA) Reference frequency clock; (BB) Output signal
Abstract translation: 目的：提供能够提高相位噪声特性的锁相环装置，以提供高质量的时钟信号或载波，从而最大化移动通信系统的传输效率。 构成：锁相环装置（100）包括相位检测器（110），电荷泵（120），环路滤波器（130），压控振荡器（140），分频器（150）和注入锁定 分频器（160）。 相位检测器通过比较输入的参考频率时钟和被分频反馈的振荡信号来产生对应于相位差的相位差信号。 电荷泵参照相位差信号产生电压信号。 环路滤波器从电压信号滤除特定频率的信号。 电压控制振荡器产生根据环路滤波器的输出信号的电压电平而改变的频率的振荡信号。 分频器分频振荡信号，并向相位检测器提供振荡信号。 注入锁定分频器将压控振荡器后端的振荡信号的频率除以奇数倍，并将分频后的频率提供给输出信号。 （附图标记）（110）相位检测器; （120）电荷泵; （130）环路滤波器; （140）压控振荡器; （150）分频器; （160）注射锁定分频器（ILFD）; （AA）参考频率时钟; （BB）输出信号
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公开(公告)号：KR101201205B1
公开(公告)日：2012-11-15
申请号：KR1020080120954
申请日：2008-12-02
Applicant: 한국전자통신연구원
CPC classification number: H03G3/30 , H03F3/211 , H03F3/2176 , H03F3/24 , H04L27/361
Abstract: 본 발명은 무선 시스템에서 복소 전송 신호를 크기 정보와 위상 정보로 분리하여 전송하는 폴라 송신기에서 신호의 대역폭에 따른 크기 정보의 변화를 효율적으로 보정하고 넓은 범위의 송신 이득 제어가 가능하도록 하는 폴라 송신기의 크기 신호 오차 보정과 송신 전력 제어에 대한 장치 및 그 방법에 관한 것이다.
본 발명에서는, 기존의 일반적인 폴라 송신기에서 위상 정보는 위상 변조기를 통해 항상 일정한 크기를 가지는 신호로 전력 증폭기에 인가되고, 복소 전송 신호의 크기 정보는 전력 증폭기의 전원을 가변시킴으로써 최종 RF 출력이 복소 전송 신호가 되도록 구성하게 된다. 이때 복소 전송 신호의 크기 정보는 정류기를 사용하여 DC전압으로 전력 증폭기에 인가될 수 있는데, 이 경우 크기 정보의 대역폭이 광대역일 경우 정류기의 스위칭 속도를 증가시키기 어려운 문제점과 효율이 극히 낮아지는 문제가 있다. 또 다른 기존의 폴라 송신기는 크기 정보를 전송하기 위해 델타 시그마 변조나 펄스 폭 변조 방법을 사용하는 것인데, 이 방법은 노이즈나 스퓨리어스 신호의 증가를 억제하기 위해 디지털 영역에서 신호의 샘플링 속도가 상당히 높게 구현되어야 하는 문제가 있고, 델타 시그마 변조기나 펄스 폭 변조기에 항상 일정한 크기의 입력 신호가 인가되어야 부가적인 노이즈나 스퓨리어스 증가를 억제할 수 있다.
따라서 본 발명에서는, 폴라 송신기에서 델타 시그마 변조기나 펄스 폭 변조기에 일정한 복소 신호의 크기 정보가 입력될 수 있도록 하는 방법과 이로 이해 발생하는 송신기 이득 변화를 효율적으로 보정하고, 또한 동일한 보정 메카니즘을 통해 넓은 범위의 송신 이득 제어가 가능하도록 하는 장점을 포함하고 있다.
즉, 기존의 폴라 송신 시스템에서 복소 신호의 크기 정보가 송신 신호의 대역폭 가변 및 자원 할당의 이유로 가변되었을 때 델타 시그마 변조기나 펄스 폭 변조기의 성능이 열화되는 것을 개선하고, 아울러 폴라 송신기에서 송신 이득의 범위가 좁게 나타나는 문제점을 효율적인 전력 제어 알고리즘으로 개선코자 하는 것이다.
무선 시스템, 자동 이득 제어 장치, 델타 시그마 변조기, 펄스 폭 변조기, 폴라 송신기-
公开(公告)号：KR1020120070056A
公开(公告)日：2012-06-29
申请号：KR1020100131455
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H03H11/53
Abstract: PURPOSE: A PMOS(P-channel Metal Oxide Semiconductor) transistor resistance is provided to regularly maintain a resistance value regardless of a size of an applied voltage by using a pair of PMOS transistors which are structurally symmetry. CONSTITUTION: A pair of PMOSes(P-channel Metal-Oxide Semiconductor)(210) includes a first PMOS transistor(211) and a second PMOS transistor(212). A switching unit(220) determines a negative feedback state by comparing a voltage in a first node with a voltage in a second node. The switching unit comprises a comparator(221), a switch(222), and a buffer(223). A negative feedback unit(230) controls source-gate voltages of the first PMOS and the second PMOS transistors through negative feedback by receiving an output voltage from the switching unit. The negative feedback unit comprises reference resistance(231), a third PMOS transistor(232), first and second current sources(233,234), and an operational amplifier(235).
Abstract translation: 目的：提供PMOS（P沟道金属氧化物半导体）晶体管电阻，通过使用结构对称的一对PMOS晶体管，无论施加电压的大小如何，均匀地保持电阻值。 构成：一对PMOS（P沟道金属氧化物半导体）（210）包括第一PMOS晶体管（211）和第二PMOS晶体管（212）。 开关单元（220）通过将第一节点中的电压与第二节点中的电压进行比较来确定负反馈状态。 开关单元包括比较器（221），开关（222）和缓冲器（223）。 负反馈单元（230）通过从开关单元接收输出电压通过负反馈来控制第一PMOS和第二PMOS晶体管的源极栅极电压。 负反馈单元包括参考电阻（231），第三PMOS晶体管（232），第一和第二电流源（233,234）和运算放大器（235）。
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15.发明公开
公开(公告)号：KR1020120054369A
公开(公告)日：2012-05-30
申请号：KR1020100115714
申请日：2010-11-19
Applicant: 한국전자통신연구원
IPC: H04B1/04
CPC classification number: H03F3/24 , H03F1/3258 , H03F2201/3212 , H04B1/0475
Abstract: PURPOSE: An inlet distortion apparatus, inlet distortion method, system including the same are provided to constitute simplified memory polynomial models by combining basic sections according to feedback results for output signals of a non-linear apparatus. CONSTITUTION: An inlet distortion filter(1100) selects one or more basic sections of plural basic sections according to selecting values. The inlet distortion filter constitutes memory polynomial models. The inlet distortion filter distorts input signals by using the memory polynomial models. A selection module(1140) determines the selecting values according to feedback results for output signals of a non-linear apparatus(1200).
Abstract translation: 目的：提供入口失真装置，入口失真方法，包括其的系统，以根据非线性装置的输出信号的反馈结果组合基本部分来构成简化的存储多项式模型。 构成：入口失真滤波器（1100）根据选择值选择多个基本部分的一个或多个基本部分。 入口失真滤波器构成存储多项式模型。 入口失真滤波器通过使用存储多项式模型来扭曲输入信号。 选择模块（1140）根据非线性装置（1200）的输出信号的反馈结果确定选择值。
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Patent Agency Ranking
公开(公告)号：KR1020120013061A
公开(公告)日：2012-02-14
申请号：KR1020100075219
申请日：2010-08-04
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A wireless relay device and a method thereof are provided to prevent changes of a frequency channel and timing from simultaneously occurring in a mobile station. CONSTITUTION: A receiving signal selecting unit(620) selects a frequency channel signal among signals inputted through a receiving antenna. A transmission signal converting unit(630) converts the selected frequency channel signal into a frequency channel signal to be transmitted through a transmitting antenna. A relay device controller(650) selects a frequency channel to be used by the transmission signal converting unit and the receiving signal selecting unit. The relay device controller controls a relay device setup parameter. The relay unit controller controls the operation of the relay device.
Abstract translation: 目的：提供无线中继装置及其方法，以防止在移动台中同时发生频道和定时的变化。 构成：接收信号选择单元（620）通过接收天线输入的信号中选择频道信号。 发送信号转换单元（630）将选择的频道信号转换成通过发送天线发送的频道信号。 中继设备控制器（650）选择由发送信号转换单元和接收信号选择单元使用的频道。 中继设备控制器控制中继设备设置参数。 中继单元控制器控制中继设备的操作。
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公开(公告)号：KR1020100062350A
公开(公告)日：2010-06-10
申请号：KR1020080120954
申请日：2008-12-02
Applicant: 한국전자통신연구원
CPC classification number: H03G3/30 , H03F3/211 , H03F3/2176 , H03F3/24 , H04L27/361
Abstract: PURPOSE: A gain control device of a polar transmitter and a method thereof are provided to realize transmission gain control of a wide range by revising a change of size information according to a bandwidth of a signal efficiently. CONSTITUTION: A signal generating unit(201~207) modulates a transmission signal. A gain revising unit(209~213) extracts a transmission gain. The gain revising unit generates an envelope signal by a pulse signal of the signal generating unit. A power amplification module(208) performs power amplification and simple amplification operation based on the envelope signal. A gain control unit(214,215) decides the size of the generated signal of the signal generating unit by a power control signal.
Abstract translation: 目的：提供极性发射机的增益控制装置及其方法，通过根据信号的带宽有效地修改尺寸信息的改变来实现宽范围的传输增益控制。 构成：信号生成单元（201〜207）调制发送信号。 增益修正单元（209〜213）提取发送增益。 增益修正单元通过信号发生单元的脉冲信号产生包络信号。 功率放大模块（208）基于包络信号进行功率放大和简单的放大操作。 增益控制单元（214,215）通过功率控制信号来决定信号生成单元的生成信号的大小。
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公开(公告)号：KR1020100058189A
公开(公告)日：2010-06-03
申请号：KR1020080116915
申请日：2008-11-24
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04B1/0483 , H03F1/0227 , H03F3/245 , H03F2200/411 , H03K7/08 , H04W52/04
Abstract: PURPOSE: An apparatus and a method for transmitting a signal in a wireless communication system are provided to prevent the unnecessary power consumption by changing output range depending on the strength of an envelope signal. CONSTITUTION: A control unit(520) receives the power control information of a baseband signal, and a signal converter(530) outputs a phase signal after receiving the baseband signal. When the output mode signal of the control unit indicates a first output mode, the signal converter outputs an envelope signal. A phase modulator(540) performs an up-converting operation of the phase signal, and an amplification unit(550) performs the combination and the amplification of an up-converted phase signal and the envelope signal at the first output mode.
Abstract translation: 目的：提供一种用于在无线通信系统中发送信号的装置和方法，以通过根据包络信号的强度改变输出范围来防止不必要的功率消耗。 构成：控制部（520）接收基带信号的功率控制信息，信号转换器（530）在接收到基带信号后输出相位信号。 当控制单元的输出模式信号表示第一输出模式时，信号转换器输出包络信号。 相位调制器（540）执行相位信号的上变换操作，并且放大单元（550）在第一输出模式下执行上转换相位信号和包络信号的组合和放大。
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公开(公告)号：KR1020090063955A
公开(公告)日：2009-06-18
申请号：KR1020070131495
申请日：2007-12-14
IPC: H04J11/00
CPC classification number: H04L27/2662 , H03G3/20 , H04L27/265
Abstract: An automatic gain controller, a signal receiver, and a signal receiving method are provided to secure accuracy of a size of a signal by controlling a gain by using only a section with a receiving signal when receiving an aperiodic burst signal. A symbol synchronization searcher(206) searches symbol synchronization of a receiving signal and counts the symbol according to the searched symbol synchronization. A symbol section searcher(213) divides the receiving signal of a frequency domain into a symbol section and a noise section. The symbol synchronization searcher includes a counter. The counter counts the number of symbol from the synchronous point searched from the symbol synchronization searcher. A controller calculates the size of the signal of the symbol section about the receiving signal of the frequency domain. The controller produces the size of the signal in the noise section based on the size of the signal of the symbol section. The controller generates the gain control signal according to the size of the signal of the symbol section and the noise section.
Abstract translation: 提供自动增益控制器，信号接收器和信号接收方法，以便通过在接收非周期性突发信号时仅使用具有接收信号的部分来控制增益来保证信号大小的精度。 符号同步搜索器（206）搜索接收信号的符号同步，并根据所搜索的符号同步对符号进行计数。 符号部分搜索器（213）将频域的接收信号分成符号部分和噪声部分。 符号同步搜索器包括计数器。 计数器从符号同步搜索器搜索的同步点计数符号数。 控制器计算关于频域的接收信号的符号部分的信号的大小。 控制器基于符号部分的信号的大小产生噪声部分中的信号的大小。 控制器根据符号部分和噪声部分的信号大小生成增益控制信号。
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公开(公告)号：KR100763994B1
公开(公告)日：2007-10-08
申请号：KR1020060124498
申请日：2006-12-08
Applicant: 한국전자통신연구원
CPC classification number: H04B1/18
Abstract: An antenna matching device for varying a frequency bandwidth according to a mobile communication service and a transceiver having the same are provided to reduce the maximum transmission power required for each service by minimizing unnecessary emission power through matching with a suitable frequency band of a variable matching unit. An antenna matching controller(260) generates a pre-set switch control signal according to a service requested by the user. An antenna variable matching unit(220) variably configures a matching circuit according to the switch control signal transferred from the antenna matching controller(260), and varies a frequency band and a bandwidth. An analog processing unit(230) processes signals transmitted to or received from the antenna variable matching unit(220). A broadband antenna(210) transmits/receives an RF(Radio Frequency) according to the frequency band and the bandwidth set by the antenna variable matching unit(220).
Abstract translation: 提供了一种用于根据移动通信服务改变频率带宽的天线匹配装置和具有该天线匹配装置的收发机，用于通过与可变匹配单元的适当频带匹配来最小化不必要的发射功率来减少每个服务所需的最大发射功率 。 天线匹配控制器（260）根据用户请求的服务生成预置开关控制信号。 天线可变匹配单元（220）根据从天线匹配控制器（260）传送的开关控制信号可变地配置匹配电路，并且改变频带和带宽。 模拟处理单元（230）处理发送到天线可变匹配单元（220）或从天线可变匹配单元（220）接收的信号。 宽带天线（210）根据由天线可变匹配单元（220）设置的频带和带宽发送/接收RF（射频）。
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