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公开(公告)号：KR1020120037869A
公开(公告)日：2012-04-20
申请号：KR1020110027734
申请日：2011-03-28
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A location based pairing method of a wideband wireless communication device and an apparatus thereof are provided to simply perform pairing between devices without a PIN code input in a wideband wireless communication system. CONSTITUTION: A first wireless device and a second wireless device performs synchronization operation(110). The second wireless device transmits a distance measuring signal to the first wireless device(120). The first wireless device estimates distance with the second wireless device(130). The first and second wireless devices perform pairing in case the second wireless device is inside a pairing area(140,150).
Abstract translation: 目的：提供宽带无线通信设备及其装置的基于位置的配对方法，以便在宽带无线通信系统中不进行PIN码输入的情况下简单地执行设备之间的配对。 构成：第一无线设备和第二无线设备执行同步操作（110）。 第二无线设备向第一无线设备（120）发送距离测量信号。 第一无线设备估计与第二无线设备（130）的距离。 第一无线设备和第二无线设备在第二无线设备在配对区域内（140,150）的情况下执行配对。
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公开(公告)号：KR1020110071731A
公开(公告)日：2011-06-29
申请号：KR1020090128372
申请日：2009-12-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An information searching method using the search word is provided to reduce the number of the searched information by adding the additional search condition to the information search using a initial sound. CONSTITUTION: A search word is comprised of the initial sound of the character and the final sound indicator indicating the existence of the final sound. The word corresponding to the initial sound of the character and the final sound indicator is searched.
Abstract translation: 目的：提供使用搜索词的信息搜索方法，通过使用初始声音将附加搜索条件添加到信息搜索中来减少搜索信息的数量。 构成：搜索词由字符的初始声音和最终声音指示符组成，表示最终声音的存在。 搜索与字符的初始声音和最终声音指示符相对应的字。
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公开(公告)号：KR1020100069126A
公开(公告)日：2010-06-24
申请号：KR1020080127722
申请日：2008-12-16
Applicant: 한국전자통신연구원
CPC classification number: H04L27/361
Abstract: PURPOSE: An apparatus and a method for amplifying a signal, and a wireless transmitter therewith are provided to have high efficiency in a broad frequency band. CONSTITUTION: A polar coordinate conversion unit(202) outputs a phase signal and an envelope signal by converting a signal into a polar coordinate, and a multi-level quantization unit(204) outputs a multi-level quantization signal by quantizing an envelope signal. An amplification state control unit(206) controls an amplification state by using the multi-level quantization signal, and a power amplification unit(208) amplifies the phase signal according to the controlled amplification state.
Abstract translation: 目的：提供用于放大信号的装置和方法，以及其中的无线发射机，以在宽频带中具有高效率。 构成：极坐标转换单元（202）通过将信号转换为极坐标来输出相位信号和包络信号，多级量化单元（204）通过量化包络信号来输出多电平量化信号。 放大状态控制单元（206）通过使用多电平量化信号来控制放大状态，功率放大单元（208）根据受控放大状态放大相位信号。
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公开(公告)号：KR1020100062351A
公开(公告)日：2010-06-10
申请号：KR1020080120955
申请日：2008-12-02
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2647 , H03G3/3068 , H04W72/0453 , H04W72/0473
Abstract: PURPOSE: A device and a method for controlling a gain in a receiver of a multi-band OFDM system are provided to perform automatic gain control at each band using the information on resource allocation for each band and the information on power for the whole band. CONSTITUTION: An amplifier(202) amplifies a received signal according to a first automatic gain control signal. An analog-digital converter(203) converts the amplified signal into a digital signal. A reception signal extractor for each band extracts the signal of the wanted reception band from the digitized signal for each reception band. The received signal extractors per band control the gains of the extracted signal according to a second automatic gain control signal. A received power detector(208) detects the received power value of the whole band from the digitized signal. A multi-band base-band processing unit(210) generates first and second automatic gain control signals.
Abstract translation: 目的：提供一种用于控制多频带OFDM系统的接收机中的增益的装置和方法，以使用关于每个频带的资源分配的信息和关于整个频带的功率的信息来在每个频带执行自动增益控制。 构成：放大器（202）根据第一自动增益控制信号放大接收信号。 模拟数字转换器（203）将放大的信号转换为数字信号。 每个频带的接收信号提取器从每个接收频带的数字化信号中提取所需接收频带的信号。 每个频带的接收信号提取器根据第二自动增益控制信号控制提取的信号的增益。 接收功率检测器（208）从数字化信号中检测整个频带的接收功率值。 多频带基带处理单元（210）产生第一和第二自动增益控制信号。
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公开(公告)号：KR1020080053188A
公开(公告)日：2008-06-12
申请号：KR1020070120715
申请日：2007-11-26
IPC: H04B17/00
CPC classification number: H04B17/309 , H04B17/3911
Abstract: A wired link tester for checking the performance of a multiple antenna system is provided to configure wired links in response to wireless links for the multiple antenna system, thereby reproducing a status that a signal transmitted from a transmitting antenna is received to all receiving antennas. A wired link tester(120) is connected to a BS1(111), a BS2(112), a terminal(130), and an external computer(140) to configure a test environment. The wired link tester comprises a fast fading reproduction unit(200), a path loss reproduction unit(300), and a control unit(600). The fast fading reproduction unit makes the wired link tester configure 16 wired links in response to 16 wireless links for the maximum 4x4 multiple antenna system, and reproduces a status that a RF(Radio Frequency) signal transmitted from a transmitting antenna is received to all receiving antennas, and changes the characteristics of a variable attenuator and a variable phase shifter according to the control signal of the control unit to reproduce fast fading characteristics. The path loss reproduction unit forms 16 wired links with the fast fading reproduction unit, and changes the characteristics of a variable attenuator positioned at the path loss reproduction unit according to the control signal of the control unit to reproduce path loss characteristics. The control unit prestores a value for reproducing the characteristic of a wireless link and controls the fast fading reproduction unit and the path loss reproduction unit according to the prestored value.
Abstract translation: 提供了用于检查多天线系统的性能的有线链路测试器，以响应于多天线系统的无线链路来配置有线链路，由此再现从发射天线发射的信号被接收到所有接收天线的状态。 有线链路测试器（120）连接到BS1（111），BS2（112），终端（130）和外部计算机（140）以配置测试环境。 有线链路测试仪包括快速衰落再现单元（200），路径损耗再现单元（300）和控制单元（600）。 快速衰落再现单元使得有线链路测试仪响应于最大4×4多天线系统的16个无线链路来配置16个有线链路，并且再现从接收到发射天线发送的RF（射频）信号到所有接收的状态 天线，并且根据控制单元的控制信号改变可变衰减器和可变移相器的特性，以再现快速衰落特性。 路径损耗再现单元与快速衰落再现单元形成16个有线链路，并且根据控制单元的控制信号改变位于路径损耗再现单元的可变衰减器的特性，以再现路径损耗特性。 控制单元预先存储用于再现无线链路的特性的值，并且根据预存值控制快速衰落再现单元和路径损耗再现单元。
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Patent Agency Ranking
公开(公告)号：KR1020080052860A
公开(公告)日：2008-06-12
申请号：KR1020060124576
申请日：2006-12-08
CPC classification number: H04B1/0475 , H04B2001/0408 , H04B2001/0416 , H04L5/22 , H04L25/03012
Abstract: A LINC transmitter and an error correction method for the LINC transmitter are provided to configure the LINC transmitter using a switch, a downconverter, and an ADC to correct only the error of a nonlinear power amplifier during a frame section, thereby reducing an amount of operation in a baseband significantly without an additional hardware. An error correction method for a LINC(Linear amplification with Nonlinear Components) transmitter comprises the following steps of: outputting a first output signal and a second output signal through a switch by frame in a transmission section in order(S100); connecting the first output signal and the second output signal to the downconverter of a receiver through a coupler and downconverting and outputting the output signal of a nonlinear power amplifier(S110); converting the downconverted signal into a digital signal through an ADC(Analog to Digital Converter) and outputting the digital signal to a digital operation unit(S120); and calculating the phase and gain error of a transmitting signal by a first nonlinear power amplifier using the first output signal when an inputted signal by frame section is the first output signal and calculating the phase and gain error of a transmitting signal by a second nonlinear power amplifier using the second output signal when an inputted signal by frame section is the second output signal(S130).
Abstract translation: 提供LINC发射机和用于LINC发射机的纠错方法，用于使用开关，下变频器和ADC配置LINC发射机，以在帧部分仅校正非线性功率放大器的误差，从而减少操作量 在基带上，没有额外的硬件。 一种用于LINC（具有非线性分量线性放大器）发送器的纠错方法包括以下步骤：按顺序在发送部分逐帧地输出第一输出信号和第二输出信号（S100）; 通过耦合器将第一输出信号和第二输出信号连接到接收机的下变频器并进行下变频并输出非线性功率放大器的输出信号（S110）; 通过ADC（模/数转换器）将下变频信号转换为数字信号，并将数字信号输出到数字操作单元（S120）; 以及当输入的逐帧部分是第一输出信号并且通过第二非线性功率计算发射信号的相位和增益误差时，使用第一输出信号由第一非线性功率放大器计算发射信号的相位和增益误差 当输入的逐帧部分是第二输出信号时，使用第二输出信号的放大器（S130）。
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公开(公告)号：KR100793059B1
公开(公告)日：2008-01-10
申请号：KR1020060112381
申请日：2006-11-14
Applicant: 한국전자통신연구원
CPC classification number: H04B1/30 , H04B1/0032 , H04B1/0035 , H04B1/0039 , H04B1/0057 , H04B1/1027 , H04B1/18
Abstract: An apparatus and a method for receiving a multiple band signal of a multiple mode are provided to adaptively perform the channel filtering of a specific mode signal by adjusting the coefficient of a digital filter according to a multiple bandwidth. An apparatus for receiving a multiple band signal of a multiple mode includes a complex frequency down converter(57,58), a variable digital filter(59,60), and a base band signal processor(61,62). The complex frequency down converter converts a digital local oscillating frequency to a single mode base band IQ(In-phase/Quadrature-phase) signal according to the variation of a central frequency of a multiple mode base band IQ signal converted by an analog-digital converter(56). The variable digital filter performs low pass filtering of the single mode base band IQ signal converted by the complex frequency down converter by using a digital filter coefficient. The base band signal processor modulates the single mode base band IQ signal filtered by the variable digital filter.
Abstract translation: 提供一种用于接收多模式的多频带信号的装置和方法，以通过根据多个带宽调整数字滤波器的系数来自适应地执行特定模式信号的信道滤波。 一种用于接收多模式的多频带信号的装置包括复频降频转换器（57,58），可变数字滤波器（59,60）和基带信号处理器（61,62）。 复频降频转换器将数字本地振荡频率转换为单模基带IQ（同相/正交相位）信号，根据由模拟数字转换的多模式基带IQ信号的中心频率的变化 转换器（56）。 可变数字滤波器通过使用数字滤波器系数对由复数降频转换器转换的单模基带IQ信号进行低通滤波。 基带信号处理器调制由可变数字滤波器滤波的单模基带IQ信号。
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公开(公告)号：KR1020070060817A
公开(公告)日：2007-06-13
申请号：KR1020050120870
申请日：2005-12-09
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2628 , H04L2027/003
Abstract: An apparatus and a method for compensation of high frequency distortion in a wireless OFDM(Orthogonal Frequency Division Multiplexing) system are provided to improve power efficiency through a lower system operation frequency by making an operation frequency of the system identical to a sample frequency of data to be transmitted. An apparatus for compensation of high frequency distortion in a wireless OFDM system includes a digital modulator(301), a reverse sync function modulus generator(302), and a sync function compensator(303). The digital modulator(301) receives a digital signal, and converts the signal into an in-phase signal and an orthogonal phase signal. The reverse sync function modulus generator(302) stores a reverse sync function of a distortion component by signal reduction of a high frequency signal component inputted to a digital-analog converter, and outputs an output value of the reverse sync function, corresponding to an input of a symbol synchronization signal, into a correction signal. The sync function compensator(303) multiplies the correction signal, output from the reverse sync function modulus generator(302), by an output value of the digital modulator(301) to output the multiplied signal.
Abstract translation: 提供了一种用于补偿无线OFDM（正交频分复用）系统中的高频失真的装置和方法，以通过使系统的操作频率与数据的采样频率相同来提高通过较低系统操作频率的功率效率 被传送。 一种用于在无线OFDM系统中补偿高频失真的装置，包括数字调制器（301），反向同步功能模量发生器（302）和同步功能补偿器（303）。 数字调制器（301）接收数字信号，并将该信号转换为同相信号和正交相位信号。 逆同步功能模量发生器（302）通过输入到数模转换器的高频信号分量的信号降低来存储失真分量的反向同步功能，并输出对应于输入的反向同步功能的输出值 的符号同步信号转换成校正信号。 同步功能补偿器（303）将来自反向同步功能模量生成器（302）的校正信号乘以数字调制器（301）的输出值，输出相乘后的信号。
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公开(公告)号：KR100638596B1
公开(公告)日：2006-10-27
申请号：KR1020050041161
申请日：2005-05-17
Applicant: 한국전자통신연구원 , 주식회사 케이티 , 에스케이브로드밴드주식회사 , 삼성전자주식회사 , 주식회사 케이티프리텔 , 에스케이텔레콤 주식회사
IPC: H04B7/26
Abstract: 본 발명은 허가 주파수 대역을 사용하는 휴대 인터넷 시스템에서 단말기의 네트워크 진입 결정 방법에 관한 것이다. 본 발명에 따른 휴대 인터넷 시스템에서 단말기의 네트워크 진입 결정 방법은, a) 단말기가 기지국으로부터 수신한 프리앰블 신호를 이용하여 초기 동기를 획득하는 단계; b) 단말기가 초기 동기를 획득한 후 기지국으로부터 국가코드가 포함된 DCD(Downlink Channel Descriptor) 메시지를 수신하는 단계; c) 수신된 DCD 메시지를 분석하여 수신된 신호를 송신하는 기지국의 상태 정보를 획득하는 단계; d) 수신된 DCD 메시지에 포함된 국가코드가 단말기에 저장된 국가코드와 서로 일치하는지 확인하는 단계; 및 e) 국가코드가 서로 일치하는 경우, 단말기의 송신 시점 및 송신 전력을 결정하는 레인징 작업을 위한 초기신호를 송신하는 단계를 포함한다. 본 발명에 따르면, 컴퓨터의 중앙처리장치와 통합되어 개발된 통합 칩을 구비한 휴대 인터넷 단말기에 있어서, 수출입 과정에서 허가 주파수 대역을 사용하는 무선기기가 반드시 거쳐야 하는 형식 승인 등의 절차를 피하고, 수출입 국가에 관계없이 사용할 수 있도록 통합 칩의 국가적 승인 절차를 간소화할 수 있다.
국가코드, 휴대 인터넷, 단말기, 기지국, 허가 주파수, 레인징, DCD-
公开(公告)号：KR1020060070312A
公开(公告)日：2006-06-23
申请号：KR1020040109006
申请日：2004-12-20
Applicant: 한국전자통신연구원 , 주식회사 케이티 , 에스케이브로드밴드주식회사 , 삼성전자주식회사 , 주식회사 케이티프리텔 , 에스케이텔레콤 주식회사
IPC: H04J11/00
CPC classification number: H04W52/52 , H03G3/00 , H04L27/2626
Abstract: 본 발명은 직교주파수분할다중접속방식을 사용하는 통신시스템용 단말장치의 송신전력 제어 장치 및 방법에 관한 것이다. 본 발명에 따르면 수신되는 신호의 전력에 따라 단말장치의 송신전력을 제어하는 경로 이외에 별도의 전력제어 장치를 삽입하여 단말장치가 사용하는 부반송파 개수에 따라 변화하는 단말장치 송신단의 기저대역 신호에 대해서 일정한 전력의 신호를 단말장치가 송신할 수 있도록 한다. 이와 같이 하면, 단말장치에서 사용하는 부반송파의 에너지를 증가시켜 송신하는 효과가 있으므로 전력집중 이득을 얻을 수 있다.
직교주파수분할다중접속, 부반송파, 전력집중 이득
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