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公开(公告)号：KR101201207B1
公开(公告)日：2012-11-15
申请号：KR1020080120955
申请日：2008-12-02
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2647 , H03G3/3068
Abstract: 본 발명은 무선 통신 시스템의 수신기의 이득 제어 장치 및 방법에 관한 것으로, 특히 다중밴드 OFDM 방식을 사용하는 시스템의 수신기에서 이득 제어 장치 및 방법에 관한 것이다.
본 발명의 일 실시 예에 따른 장치는, 다중밴드 OFDM 방식을 사용하는 무선통신 시스템의 수신기에서 수신 신호의 이득을 조정하기 위한 장치로서, 수신된 신호를 제1자동 이득 제어 신호에 의거하여 증폭하는 증폭기와, 상기 증폭된 신호를 디지털 신호로 변환하는 아날로그-디지털 변환기와, 각 수신 밴드마다 상기 디지털 변환된 신호에서 원하는 수신 밴드의 신호를 추출하며 추출된 신호의 이득을 제2자동 이득 제어 신호에 조정하는 밴드별 수신 신호 추출기들과, 상기 디지털 변환된 신호로부터 전체 밴드의 수신 전력값을 검출하여 출력하는 수신전력 검출기와, 상기 검출된 전체 밴드의 수신 전력값을 이용하여 상기 제1자동이득 제어 신호를 생성하고, 전체 밴드의 전력 정보 및 각 밴드별 자원할당 정보 및 수신 밴드별 수신 전력을 이용하여 상기 각 밴드별 수신 신호 추출기들로 제공할 상기 제2자동 이득 제어 신호를 생성하는 다중밴드 기저대역 처리부를 포함한다.
다중밴드, OFDM, 이득 제어, 자원할당-
公开(公告)号：KR1020120070145A
公开(公告)日：2012-06-29
申请号：KR1020100131579
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H03F1/32 , H04B1/62 , H04B7/0619
Abstract: PURPOSE: A digital pre-distortion(DPD) amplifying device in a multiple antenna system is provided to prevent the increase of system sizes and costs by sharing a DPD feedback path and a DPD algorithm processing part. CONSTITUTION: Correcting parts(411 to 414) pre-distort input signals to be output and output the pre-distorted signals through antennas(441 to 444). Power amplifiers(431 to 434) are in connection with the correcting parts and amplify and output the pre-distorted signals. A distorted information extractor(450) extracts distorted information from feedback signals from the power amplifiers and from the input signals and output the distorted information to the correcting parts.
Abstract translation: 目的：提供多天线系统中的数字预失真（DPD）放大装置，以通过共享DPD反馈路径和DPD算法处理部分来防止系统尺寸和成本的增加。 构成：校正部分（411至414）预失真输出信号以输出，并通过天线输出预失真信号（441至444）。 功率放大器（431至434）与校正部分相连，并放大并输出预失真信号。 失真的信息提取器（450）从功率放大器和输入信号的反馈信号中提取失真的信息，并将失真的信息输出到校正部分。
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公开(公告)号：KR1020110067873A
公开(公告)日：2011-06-22
申请号：KR1020090124648
申请日：2009-12-15
Applicant: 한국전자통신연구원
Inventor： 조권도
CPC classification number: H03F1/3247 , H03F3/24 , H03F2200/447
Abstract: PURPOSE: A power amplifying system for nonlinear distortion compensation and pre-distortion method are provided to apply a suitable inverse function to a pre-distorter, thereby stably guaranteeing a linear operation. CONSTITUTION: A transmission signal is pre-distorted by a pre-distorter. The distorted transmission signal is amplified by a power amplifier. Adjacent channel power of the amplified transmission signal is measured. The average value of the measured adjacent channel power is calculated(205). A count value increases by comparing the average value with a first threshold value. An inverse function of a transfer function of the power amplifier is generated according to the comparison result between the increased count value and a preset limit value. The inverse function is applied to the pre-distorter(245).
Abstract translation: 目的：提供一种用于非线性失真补偿和预失真方法的功率放大系统，以将适当的反向功能应用于预失真器，从而稳定地保证线性运行。 构成：传输信号由预失真器预失真。 失真的传输信号由功率放大器放大。 测量放大的发送信号的相邻信道功率。 计算测量的相邻信道功率的平均值（205）。 通过将平均值与第一阈值进行比较来增加计数值。 根据增加的计数值和预设极限值之间的比较结果，产生功率放大器的传递函数的反函数。 逆函数应用于预失真器（245）。
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公开(公告)号：KR1020110067872A
公开(公告)日：2011-06-22
申请号：KR1020090124647
申请日：2009-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2623 , H04L27/2628
Abstract: PURPOSE: A PAPR(Peak to Average Power Ratio) reduction apparatus and orthogonal frequency division multiplexing system for the same are provided to reduce the PAPR phenomenon of a signal that is modulated in two or more modulation methods. CONSTITUTION: A clipping level determining unit(620) determines a clipping level for PAPR reduction based on complex modulation method information and average voltage of a modulated signal. A clipping unit(600) clips the signal which is complexly modulated to the determined clipping level. The clipping level determining unit receives the average voltage from a modulating unit. The clipping unit performs nonlinear clipping by using a log function.
Abstract translation: 目的：提供一种PAPR（峰均功率比）降低装置及其正交频分复用系统，以减少以两种或多种调制方式调制的信号的PAPR现象。 构成：削波电平确定单元（620）基于复调制方法信息和调制信号的平均电压来确定用于PAPR降低的限幅电平。 剪切单元（600）将被复制调制的信号剪切到所确定的限幅电平。 限幅电平确定单元从调制单元接收平均电压。 剪辑单元通过使用日志功能执行非线性剪辑。
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公开(公告)号：KR1020110067747A
公开(公告)日：2011-06-22
申请号：KR1020090124463
申请日：2009-12-15
Applicant: 한국전자통신연구원
IPC: G06Q50/30
CPC classification number: G06Q10/107 , G06F21/6218 , G06F2221/2105 , G06F2221/2113
Abstract: PURPOSE: A web-based service account management device and method thereof are provided to protect the privacy of a user by interrupting message reception. CONSTITUTION: An account selector(110) selects one or more user accounts. A hiding setup unit(120) sets up a hiding display of a user account. The account selector selects one or more user accounts. The account selector selects one or more user accounts to the others. The hiding setup unit stores transmitted mail to a preset mailbox.
Abstract translation: 目的：提供一种基于网络的服务帐户管理装置及其方法，以通过中断消息接收来保护用户的隐私。 构成：帐户选择器（110）选择一个或多个用户帐户。 隐藏设置单元（120）设置用户帐户的隐藏显示。 帐户选择器选择一个或多个用户帐户。 帐户选择器为其他用户选择一个或多个用户帐户。 隐藏设置单元将发送的邮件存储到预设邮箱。
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Patent Agency Ranking
公开(公告)号：KR1020110067725A
公开(公告)日：2011-06-22
申请号：KR1020090124427
申请日：2009-12-15
Applicant: 한국전자통신연구원
IPC: H04B1/40
CPC classification number: H04M15/06 , H04M1/2745 , H04M1/575 , H04M1/663
Abstract: PURPOSE: A registered person ghost processing apparatus and method thereof are provided to protect reception information about a ghost registered person. CONSTITUTION: A ghost setup determining unit(105) is connected to call request or message receipt. The ghost setup determining unit determines whether to set up ghost of a telephone number of a caller. A reception information controlling unit(113) stores reception information to a ghost memory unit. A receive refusal determining unit(107) determines whether to refuse the reception of a call according to the telephone number.
Abstract translation: 目的：提供一种注册人鬼魂处理装置及其方法，用于保护关于幽灵注册人的接收信息。 构成：幽灵设置确定单元（105）被连接到呼叫请求或消息接收。 幽灵设置确定单元确定是否设置呼叫者的电话号码的重影。 接收信息控制单元（113）将接收信息存储到重影存储单元。 接收拒绝确定单元（107）根据电话号码确定是否拒绝接收呼叫。
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公开(公告)号：KR1020110030287A
公开(公告)日：2011-03-23
申请号：KR1020100062781
申请日：2010-06-30
Applicant: 한국전자통신연구원
CPC classification number: H03F1/3247 , H03F1/3294 , H03F3/24 , H03F2201/3224 , H03F2201/3233
Abstract: PURPOSE: A pre-distortion device of a power amplifier and a method thereof are provided to fix a bias voltage of a power amplifier while a complex correction coefficient is updated, thereby distortion of a signal outputted from the power amplifier. CONSTITUTION: A pre-distortion unit(210) calculates the size of an input signal. The pre-distortion unit generates a pre-distortion signal of the input signal by outputting a complex correction coefficient corresponding to the size of the input signal. The pre-distortion unit provides the generated pre-distortion signal as input of the power amplifier. A complex correction coefficient updating unit(240) generates an error signal by comparing an output signal with the input signal of the power amplifier. The complex correction coefficient updating unit updates the complex correction coefficient to minimize the size of the generated error signal. The pre-distortion unit provides a fixed bias voltage value to the power amplifier while the complex correction coefficient is updated.
Abstract translation: 目的：提供功率放大器的预失真装置及其方法，以在复位校正系数更新时固定功率放大器的偏置电压，从而从功率放大器输出的信号失真。 构成：预失真单元（210）计算输入信号的大小。 预失真单元通过输出与输入信号的大小对应的复数校正系数，生成输入信号的预失真信号。 预失真单元提供所产生的预失真信号作为功率放大器的输入。 复数校正系数更新单元（240）通过将输出信号与功率放大器的输入信号进行比较来产生误差信号。 复数校正系数更新单元更新复数校正系数以最小化所生成的误差信号的大小。 预失真单元向功率放大器提供固定的偏置电压值，同时更新复数校正系数。
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公开(公告)号：KR100979203B1
公开(公告)日：2010-09-01
申请号：KR1020070131336
申请日：2007-12-14
Applicant: 한국전자통신연구원
IPC: H04B7/26
Abstract: 본 발명은 이동통신 시스템에서 네이밍 서비스를 이용한 핸드오프 방법에 관한 것이다. 본 발명에 따른 핸드오프 방법은, 다중모드 서비스를 수용하는 사용자 단말에서, 네이밍 서비스(naming service)를 이용한 사용자 선택적 핸드오프 방식을 사용한다. 본 발명에 따르면, 이동통신 시스템의 발달에 따라 서비스 시나리오를 확대 시킴으로써, 사용자 응용의 확대를 가져와 SDR(Software Defined Radio) 시스템 수용의 장점을 부각시킬 수 있으며, 최소의 소프트웨어 모듈의 다운로드만으로, 요구하는 서비스를 끊김 없이 제공받을 수 있다.
네이밍, 에스디알, 핸드오프, 콤포넌트-
公开(公告)号：KR1020090065330A
公开(公告)日：2009-06-22
申请号：KR1020070132825
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L1/02 , H04B7/0413 , H04L1/0054
Abstract: A method for detecting signals in a MIMO(Multiple Input Multiple Output) communication system and a MIMO communication system are provided to correct a colored noise by performing an optimum signal detecting algorithm. A MIMO system includes receiving antennas(120-1~120-N), auto gain control parts(130-1~130-N), and quantization parts(140-1~140-N). The number of receiving antennas is more than the number of transmitting antennas. A gain of each auto gain control part is different. Symbols are transmitted through the transmitting antennas at the same time. The symbols are received through the receiving antennas. The received signals are inputted to a receiving signal processing block through a VGA(Variable Gain Amplifier). A signal detecting part(150) performs an optimum signal detecting algorithm based on a signal quantized in the quantization part.
Abstract translation: 提供了一种用于检测MIMO（多输入多输出）通信系统和MIMO通信系统中的信号的方法，以通过执行最佳信号检测算法来校正彩色噪声。 MIMO系统包括接收天线（120-1〜120-N），自动增益控制部分（130-1〜130-N）和量化部分（140-1〜140-N）。 接收天线的数量大于发射天线的数量。 每个自动增益控制部分的增益是不同的。 符号通过发射天线同时传输。 通过接收天线接收符号。 所接收的信号通过VGA（可变增益放大器）输入到接收信号处理块。 信号检测部分（150）基于在量化部分中量化的信号执行最佳信号检测算法。
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公开(公告)号：KR1020090065321A
公开(公告)日：2009-06-22
申请号：KR1020070132814
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L1/1845 , H04L1/1816
Abstract: A decoding method and a decoding device of a retransmission communication system are provided to give a weighted value to a bit string by comparing a received error data with a LLR(Log Likelihood Ratio) value of the bit string including a retransmission data. A transceiving part(110) exchanges a data with a transmitter which transmits the data. The transceiving part exchanges an encoded data by using a turbo code as a channel code. A decoding part(120) decodes the received data by using a turbo decoder. An error checking part(130) checks an error of the decoded data by using a cyclic redundancy check method. A memory(140) stores the data. A LLR calculation part(150) calculates a LLR value of a bit string included in the data. A comparing part(160) compares the LLR value of the bit string included in the data. A data generating part(170) couples the bit string included in the data.
Abstract translation: 提供重发通信系统的解码方法和解码装置，通过将接收到的误差数据与包含重传数据的比特串的LLR（对数似然比）值进行比较，给出比特串的加权值。 收发部分（110）与发送数据的发送机交换数据。 收发部分通过使用turbo码作为信道码来交换编码数据。 解码部分（120）通过使用turbo解码器解码所接收的数据。 错误检查部（130）通过使用循环冗余校验方法检查解码数据的错误。 存储器（140）存储数据。 LLR计算部（150）计算数据中包含的位串的LLR值。 比较部分（160）比较数据中包括的比特串的LLR值。 数据生成部（170）将包含在数据中的比特串耦合。
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