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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：KR100961260B1
公开(公告)日：2010-06-03
申请号：KR1020070125060
申请日：2007-12-04
CPC classification number: H04L27/364 , H03C3/406
Abstract: 본 발명은 직교 변조 시스템에서 반송파 누설 보상 장치 및 그 방법에 관한 것이다.
반송파 누설을 억제하고 이를 최소화하여 보상하기 위해, 아날로그 방식의 간단한 회로를 이용하여 동위상과 직교위상 기저대역 차동 입력 직류 전압차를 0 또는 임의의 미세한 전압차로 동시에 조정한다. 따라서, 간단한 아날로그 방식의 반송파 누설 보상 장치를 이용하여 반송파 누설을 억제할 수 있으며, 다양한 직교 변조기를 이용하여 간단하게 반송파 누설 보상 장치를 구현할 수 있다.
직교 변조 시스템, 반송파, 누설, 보상, 변조기, 아날로그-
公开(公告)号：KR100886434B1
公开(公告)日：2009-03-02
申请号：KR1020070112618
申请日：2007-11-06
Applicant: 한국전자통신연구원
IPC: H03H7/12
CPC classification number: H03H7/0161 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/036
Abstract: A scalable bandwidth system and a method for controlling the tunable filter are provided to reduce complexity of hardware without an additional digital-analog converter by using a digital signal as a control signal. A scalable bandwidth system includes a tunable filter part(100) and a controller(200). The tunable filter part includes an inductor(L1) and a plurality of diodes(D1-Dn). The tunable filter part filters pass band corresponding to the inductance corresponding to inductor and the capacitance corresponding to a plurality of diodes. The controller controls the capacitance by using the control bit corresponding to each diode. A first terminal and a second terminal of the inductor are connected to the input terminal and the output terminal of the tunable filter part respectively. The cathode terminal and the anode terminal of each diode are connected to the second terminal and a ground terminal of the inductor.
Abstract translation: 提供可扩展的带宽系统和用于控制可调滤波器的方法，以通过使用数字信号作为控制信号来减少硬件的复杂度，而不需要额外的数模转换器。 可扩展带宽系统包括可调滤波器部分（100）和控制器（200）。 可调谐滤波器部分包括电感器（L1）和多个二极管（D1-Dn）。 可调谐滤波器部分对应于对应于电感器的电感的通带和对应于多个二极管的电容。 控制器通过使用与每个二极管对应的控制位控制电容。 电感器的第一端子和第二端子分别连接到可调谐滤波器部件的输入端子和输出端子。 每个二极管的阴极端子和阳极端子连接到电感器的第二端子和接地端子。
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公开(公告)号：KR1020080052241A
公开(公告)日：2008-06-11
申请号：KR1020070058186
申请日：2007-06-14
CPC classification number: H04B7/15535
Abstract: An RF repeater of time division duplexing and a method thereof are provided to efficiently generate a transmission/reception synchronization signal and an automatic gain control signal to compensate for a downlink signal. A method of an RF repeater of time division duplexing comprises the following steps. The RF repeater receives a downlink signal from the base station through a donor antenna(S100), and generates a synchronization signal and an automatic gain control signal using the received downlink signal(S102). The RF repeater generates a transmission/reception synchronization signal that compensates for a path delay of a synchronization signal generated by using the downlink signal according to the location of the RF repeater and then transmits a transmission/reception synchronization signal that is generated for the purpose of the RF relay between the mobile terminal and the base station to the base station and the mobile terminal(S104). Further, the RF repeater maps gain conversion information that is stored in advance on the basis of the generated automatic gain control signal and extracts the gain information(S106). The RF repeater generates a downlink automatic gain control signal to perform gain control of a downlink signal that is received on the basis of the extracted gain information(S107). The RF repeater compensates for the received downlink signal on the basis of the generated downlink automatic gain control signal(S108).
Abstract translation: 提供时分双工的RF中继器及其方法，以有效地生成发送/接收同步信号和自动增益控制信号来补偿下行链路信号。 时分双工的RF中继器的方法包括以下步骤。 RF中继器通过施主天线从基站接收下行链路信号（S100），并使用接收到的下行链路信号生成同步信号和自动增益控制信号（S102）。 RF中继器产生发送/接收同步信号，该发送/接收同步信号根据RF中继器的位置来补偿通过使用下行链路信号产生的同步信号的路径延迟，然后发送为了 移动终端与基站之间的RF中继到基站和移动终端（S104）。 此外，RF中继器基于生成的自动增益控制信号来映射预先存储的增益转换信息，并提取增益信息（S106）。 RF中继器产生下行链路自动增益控制信号，以根据所提取的增益信息来接收下行链路信号的增益控制（S107）。 RF中继器基于生成的下行链路自动增益控制信号来补偿接收到的下行链路信号（S108）。
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公开(公告)号：KR100778345B1
公开(公告)日：2007-11-22
申请号：KR1020060112169
申请日：2006-11-14
Applicant: 한국전자통신연구원
CPC classification number: H04B17/309 , H04B7/0691 , H04B7/0874
Abstract: A channel measurement apparatus having two-way radio spatial channel measurement function using a multi-antenna is provided to measure the same channel characteristics as a communication scheme, which uses an actual radio spatial channel, at a small out lay by transferring signals to multiple antennas through a single high power amplifier and an inexpensive high power switch. A channel measurement apparatus having two-way radio spatial channel measurement function using a multi-antenna(13) consists of a transmitter(10), a high power multi-switch(11), plural circulators(12), a low-loss multi-switch(14) and a receiver(15). The transmitter(10) amplifies frequency up-converted signals at high power and removes signals of an arbitrary frequency band. The high power multi-switch(11) sequentially forwards Tx signals, transferred from the transmitter(10), to associated circulators(12). The circulators(12) forward the Tx signals to associated antennas of the multi-antenna(13). Also the circulators(12) deliver Rx signals, forwarded from the multi-antenna(13), to the low-loss multi-switch(14). The low-loss multi-switch(14) forwards the Rx signals to the receiver(15) sequentially. The receiver(15) removes the frequency component of a radio spatial channel, except for a desired frequency band, from the Rx signals delivered through the low-loss multi-switch(14) and executes low noise amplification.
Abstract translation: 提供一种具有使用多天线的双向无线电空间信道测量功能的信道测量装置，用于测量与使用实际无线电空间信道的通信方式相同的信道特性，通过传输信号到多个天线 通过单个大功率放大器和便宜的大功率开关。 具有使用多天线（13）的双向无线电空间信道测量功能的信道测量装置包括发射机（10），高功率多开关（11），多个循环器（12），低损耗多 开关（14）和接收器（15）。 发射机（10）以高功率放大上变频信号并去除任意频带的信号。 高功率多开关（11）顺序地将从发射器（10）传送的Tx信号转发到相关联的循环器（12）。 循环器（12）将Tx信号转发到多天线（13）的相关天线。 此外，循环器（12）将从多天线（13）转发的Rx信号传送到低损耗多开关（14）。 低损耗多开关（14）依次将Rx信号转发到接收器（15）。 接收器（15）从通过低损耗多开关（14）传送的Rx信号中去除除了期望频带之外的无线电空间信道的频率分量，并执行低噪声放大。
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Patent Agency Ranking
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：KR101727600B1
公开(公告)日：2017-05-02
申请号：KR1020150012243
申请日：2015-01-26
Applicant: 한국전자통신연구원
CPC classification number: H01Q3/267 , H04B17/0085 , H04B17/12 , H04B17/14 , H04B17/21
Abstract: 본발명의실시예에따른배열안테나시스템의오차보정장치는다수의배열안테나를구비한배열송신안테나시스템의오차보정장치에있어서, 송신신호의통과대역과간섭하지않는영역에단일주파수신호로오차보정신호를생성하는보정신호생성기; 상기송신신호를 RF 대역으로상향변환하여상기다수의배열안테나로전달하는배열 RF 송신기; 상기오차보정신호와상기배열 RF 송신기를통과하여수신되는수신단일주파수신호를상관하여상기배열 RF 송신기의전달함수를추정하고추정된전달함수를이용하여필터계수를추출하는오차보정추정기; 및상기필터계수를적용하여송신신호의오차를보정하여보정된송신신호를상기배열 RF 송신기로출력하는복소필터를포함할수 있다.
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公开(公告)号：KR1020160083797A
公开(公告)日：2016-07-12
申请号：KR1020150149584
申请日：2015-10-27
Applicant: 한국전자통신연구원
Abstract: 본발명의모션계산회로는단말의자세변화값을주기적으로추적하고이 자세변화값이단말의구성에따라정해진임계치를초과하여변화하는지를추적하게된다. 이임계치는기본적으로단말안테나의수에따라서정해지게되는데, 360도수평전방향을 n개의안테나로나누어담당한다고가정했을때 하나의안테나는 360/n를담당하게되고, 이때임계치는 ±360/2n으로볼 수있다.
Abstract translation: 根据本发明，运动计算电路周期性地跟踪终端的姿态变化值，并且跟踪姿势变化值是否改变为超过根据终端的配置设置的阈值。 阈值基本上根据终端天线的数量设定。 假设360度水平全向被n个天线划分和充电，一个天线负责360 / n，其中阈值为+ -360 / 2n。
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公开(公告)号：KR1020150107176A
公开(公告)日：2015-09-23
申请号：KR1020140029700
申请日：2014-03-13
Applicant: 한국전자통신연구원
Abstract: 본 발명은 하나의 셀에 디지털신호 처리부 및 적어도 하나 이상의 중계장치에 대한 것이다. 중계장치는 디지털 인터페이스 모듈 및 무선주파수 모듈을 포함한다. 디지털 인터페이스 모듈은 디지털 신호 처리부로부터 기저대역의 디지털 신호를 수신한다. 디지털 인터페이스 모듈은 디지털신호를 통신규약에 맞게 변환한다. 또한, 디지털 인터페이스 모듈은 무선주파수 신호의 출력레벨을 제어하는 신호를 무선주파수 모듈에 출력한다. 따라서, 셀 환경 및 이동통신망의 변화에 따라 중계장치의 디지털 인터페이스 모듈의 변경만으로 무선주파수 신호의 출력레벨 조절이 가능하다. 또한, 각각의 중계장치는 서로 다른 무선주파수 신호의 출력이 가능하므로, 데이터의 양이 증가한다.
Abstract translation: 本发明涉及数字信号处理单元和一个单元的一个或多个中继器。 本发明的中继器包括数字接口模块和无线频率模块。 数字接口模块从数字信号处理单元接收基带的数字信号，将要拟合的数字信号转换为通信协议，并将控制无线频率信号的输出电平的信号输出到 无线频率模块。 因此，根据小区环境和移动通信网络的变化，可以仅通过转发器的数字接口模块的变化来控制无线频率信号的输出电平。 此外，每个中继器可以输出彼此不同的无线频率信号，从而增加数据量。
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