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公开(公告)号：KR1020030017193A
公开(公告)日：2003-03-03
申请号：KR1020010051365
申请日：2001-08-24
Applicant: 한국전자통신연구원
IPC: H04B1/7107
CPC classification number: H04B1/71075 , H04B1/7093
Abstract: PURPOSE: A multiuser interference cancellation receiver for a TDD-CDMA(Time Division Duplex-Code Division Multiple Access) system and a method for controlling the interference cancellation are provided to perform interference cancellation for signals having high power values even when differences of signal power values are wide among users, so as to minimize errors in the detection of user signals having low signal power values. CONSTITUTION: A data extractor(100) extracts data from received signals and outputs the extracted data. A signal delay part(200) delays the signals outputted from the data extractor(100) during a predetermined time, and outputs the delayed signals. An interference cancellation selection part(300) extracts midamble signal channels from received original signals, to select and output users of the subject of the first interference cancellation. The first step interference cancellation block(400) receives data of the received signals from the data extractor(100), to perform the first parallel interference cancellation for the selected users of the first interference cancellation subject and output reproduction signals. And the second step interference cancellation block(500) receives data of the received signals delayed during the predetermined time and outputted from the signal delay part(200), to perform the second parallel interference cancellation using the first reproduction signals outputted from the first step interference cancellation block(400).
Abstract translation: 目的：提供用于TDD-CDMA（时分双工码分多址）系统的多用户干扰消除接收机和用于控制干扰消除的方法，以便即使在信号功率值差 在用户中广泛，以便最小化检测具有低信号功率值的用户信号的错误。 构成：数据提取器（100）从接收信号中提取数据并输出提取的数据。 信号延迟部分（200）在预定时间内延迟从数据提取器（100）输出的信号，并输出延迟的信号。 干扰消除选择部分（300）从接收到的原始信号中提取中置信号信道，以选择和输出第一干扰消除对象的用户。 第一级干扰消除块（400）从数据提取器（100）接收接收到的信号的数据，以对第一干扰消除对象的选定用户和输出再现信号执行第一并行干扰消除。 并且第二级干扰消除块（500）接收在预定时间内延迟并从信号延迟部分（200）输出的接收信号的数据，以使用从第一级干扰输出的第一再现信号执行第二并联干扰消除 消除块（400）。
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公开(公告)号：KR1020020039424A
公开(公告)日：2002-05-27
申请号：KR1020000069229
申请日：2000-11-21
Applicant: 한국전자통신연구원
IPC: H04B7/216
CPC classification number: H04L1/0618 , H04B1/712 , H04L1/0631
Abstract: PURPOSE: A system for receiving an ultra-high performance space-time array of a fading adaptive type and a method thereof are provided to select a correlation length of a pilot channel in adaptable and perform a correlation using a variation amount of a fading channel obtained through a doppler frequency estimation and a data rate of a receiving signal when a pilot channel is correlated for compensating a distortion phenomenon by a fading channel in a reverse direction link of a CDMA wireless communication system applying an array antenna. CONSTITUTION: A plurality of digital beam forming networks(120) perform a space filtering by multiplying a receiving signal which is received from a plurality of antennas and converted into a digital signal by a weight value vector according to each multiple path signal, and forms a beam. A plurality of demodulators(160) demodulate output signals of a plurality of digital beam forming networks. A pilot channel correlator estimates a fading channel using a pilot signal in the demodulators(160). A doppler frequency estimation unit(150) receives an output of the pilot channel correlator and estimates a doppler frequency of the fading channel. A microprocessor(180) supplies data rate information of a received signal and controls a signal flow. A correlation length selection unit(140) receives a doppler frequency estimation value estimated from the doppler frequency estimation unit(150) and a data rate of a received signal and decides a correlation length of the pilot channel correlator. A reference signal generator(170) receives outputs of a plurality of fingers and generates a reference signal. A plurality of weight value vector estimators receive an output of the reference signal generator(170) and the receiving signal and supplies the digital beam forming network(120).
Abstract translation: 目的：提供一种用于接收衰落自适应类型的超高性能时空阵列及其方法的系统，用于选择可适应的导频信道的相关长度，并使用获得的衰落信道的变化量来执行相关性 通过多普勒频率估计和当导频信道相关联的接收信号的数据速率时，通过应用阵列天线的CDMA无线通信系统的反向链路中的衰落信道来补偿失真现象。 构成：多个数字波束形成网络（120）通过将从多个天线接收的接收信号相乘并根据每个多路径信号被加权值向量转换为数字信号来执行空间滤波，并形成 光束。 多个解调器（160）解调多个数字波束形成网络的输出信号。 导频信道相关器使用解调器（160）中的导频信号来估计衰落信道。 多普勒频率估计单元（150）接收导频信道相关器的输出并估计衰落信道的多普勒频率。 微处理器（180）提供接收信号的数据速率信息并控制信号流。 相关长度选择单元（140）接收从多普勒频率估计单元（150）估计的多普勒频率估计值和接收信号的数据速率，并确定导频信道相关器的相关长度。 参考信号发生器（170）接收多个手指的输出并产生参考信号。 多个权重值向量估计器接收参考信号发生器（170）的输出和接收信号并提供数字波束形成网络（120）。
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13.发明公开배열 안테나를 이용한 대역 확산 코드 분할 다중 접속기지국 시스템의 순방향 빔 형성 가중치 연산 장치, 이를이용한 순방향 빔 형성 시스템 및 그 방법 失效用于使用阵列天线的扩展CDMA BTS中的前向波束形成重量值的装置以及使用其形成前向波束的系统及其方法
公开(公告)号：KR1020020037635A
公开(公告)日：2002-05-22
申请号：KR1020000067696
申请日：2000-11-15
Applicant: 한국전자통신연구원
IPC: H04B7/216
CPC classification number: H04B7/0617 , H04B7/0621 , H04B7/2628
Abstract: PURPOSE: An apparatus for operating a forward beam formation weight value in a spreading CDMA(Code Division Multiple Access) BTS(Base Transceiver Station) using an array antenna, and a system for forming a forward beam using the same and a method therefor are provided to simply its structure, minimize interference to other terminals, and enhance a power emitted at an angle in which a desired terminal is located by performing beam formation using a response vector instead of channel information received from the terminal. CONSTITUTION: A plurality of normalizers(201) normalize receipt array response vectors in which the transfer function component of a receiving unit is removed, remove fading components, and obtain receipt antenna response vectors. A plurality of antenna response converters(202) convert the receipt antenna response vectors obtained in a plurality of normalizers(201) into transmission antenna response vectors. A plurality of vector outer product arithmetic units(203) receive the transmission antenna response vectors from a plurality of antenna response converters(202) and generate a space correlation matrix to each user using vector outer product. A matrix adder(204) receives the space correlation matrixes from a plurality of vector outer product arithmetic units(203), adds the received space correlation matrixes, and generates a space correlation matrix to all users. An inverse matrix arithmetic unit(205) receives the space correlation matrix to all users from the matrix adder(204) and obtains an inverse matrix. A plurality of matrix multipliers(206) multiply the inverse matrix received from the inverse matrix arithmetic unit(205) and the transmission antenna response vectors received from a plurality of antenna response converters(202), and operate forward beam formation weight values.
Abstract translation: 目的：提供一种在使用阵列天线的扩频CDMA（码分多址）BTS（基站收发台）中操作前向波束形成权重值的装置，以及用于使用该方法形成前向波束的系统及其方法， 简化其结构，最小化对其他终端的干扰，并且通过使用响应向量来代替从终端接收的信道信息，通过执行波束形成来增强以期望终端所位于的角度发射的功率。 构成：多个归一化器（201）对接收单元的传递函数分量被去除的接收阵列响应向量进行归一化，去除衰落分量，并获得接收天线响应矢量。 多个天线响应转换器（202）将在多个归一化器（201）中获得的接收天线响应矢量转换成发射天线响应矢量。 多个向量外积运算单元（203）从多个天线响应转换器（202）接收发送天线响应向量，并使用向量外积生成每个用户的空间相关矩阵。 矩阵加法器（204）从多个向量外积运算单元（203）接收空间相关矩阵，将接收到的空间相关矩阵相加，并向所有用户生成空间相关矩阵。 逆矩阵运算单元（205）从矩阵加法器（204）接收所有用户的空间相关矩阵，并获得逆矩阵。 多个矩阵乘法器（206）将从逆矩阵运算单元（205）接收的逆矩阵和从多个天线响应转换器（202）接收的发送天线响应矢量相乘，并且操作正向波束形成权重值。
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公开(公告)号：KR1020010009587A
公开(公告)日：2001-02-05
申请号：KR1019990028020
申请日：1999-07-12
Applicant: 한국전자통신연구원
CPC classification number: H04B1/7115 , H01Q3/2605 , H04B1/709 , H04B7/086
Abstract: PURPOSE: An efficient structure demodulator is provided to utilize not only information in a time area but also information in a space area. CONSTITUTION: A correlator bank(112) receives a digital base band signal(101) to calculate a correlation with a local code sequence. A beam forming calculator(102) receives the digital base band signal(101) to calculate a beam forming weight factor based upon the correlated value of the correlator bank(112). A beam forming multiplier(110) for a finger receives the digital base band signal(101) to multiply the beam forming weight factor(115) and then process a summing. A beam forming multiplier(104) for a searcher receives the digital base band signal(101) to multiply the beam forming weight factor(103) and then process a summing. A searcher bank(106) receives an output signal from the beam forming multiplier(104). A finger bank(109) receives an output signal from the beam forming multiplier(110) to perform a multipath tracking based upon an output signal(108) of the searcher bank(106), and supply a multipath tracking signal to the correlator bank(112). A multipath coupler(117) receives a multipath tracking result signal from the finger bank(109) to process a multipath coupling and output a result to a decoder.
Abstract translation: 目的：提供一种有效的结构解调器，不仅可以利用时区中的信息，还可以利用空间区域中的信息。 构成：相关器组（112）接收数字基带信号（101）以计算与本地码序列的相关性。 波束形成计算器（102）接收数字基带信号（101），以基于相关器组（112）的相关值来计算波束形成权重因子。 用于手指的波束形成乘法器（110）接收数字基带信号（101）以乘以波束形成权重因子（115），然后处理求和。 用于搜索器的波束形成乘法器（104）接收数字基带信号（101）以乘以波束形成权重因子（103），然后处理求和。 搜索器组（106）从波束形成乘法器（104）接收输出信号。 手指组（109）从波束形成乘法器（110）接收输出信号，以根据搜索器组（106）的输出信号（108）进行多径跟踪，并向相关器存储体提供多径跟踪信号 112）。 多径耦合器（117）从手指组（109）接收多径跟踪结果信号，以处理多径耦合并将结果输出到解码器。
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公开(公告)号：KR100155333B1
公开(公告)日：1998-11-16
申请号：KR1019950054531
申请日：1995-12-22
Applicant: 한국전자통신연구원
IPC: H04B1/7087
Abstract: 본 발명은 무선 통신시스템에 관한 것으로 특히, 옥내외 60~600미터의 반경 내에서 대역확산 코드 한 개를 공통으로 사용하여 기지국(base station:BS)과 다수의 이동 단말기(mobile terminal:MT)들 사이에서 복수개의 패킷을 동시에 수신처리할 수 있도록 TDD(Time Division Duplex)방식을 사용하는 지역 무선 패킷 통신시스템에 관한 것이다.
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Patent Agency Ranking
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公开(公告)号：KR1019910000652B1
公开(公告)日：1991-01-31
申请号：KR1019870014079
申请日：1987-12-10
Abstract: The method comprises a first step for eliminating dial tone utilizing a filter (30) for detecting and discriminating efficient digit tone, a second step for modulating signal sampled by 8KHz descend sampling to 4KHz sampled signal, a third step for dividing sampled signal into high frequency band and low frequency band group digit tone, a fourth step for analyzing autocorelation of the digit tone, and a fifth step for transmitting result of signal detecting by deciding existancy of signal and frequency of signal.
Abstract translation: 该方法包括：利用滤波器（30）消除拨号音的第一步骤，用于检测和识别有效数字音调;第二步骤，用于将通过8KHz下降采样采样的信号调制到4KHz采样信号;第三步骤，用于将采样信号分频为高频 频带和低频带组数字音，用于分析数字音的自相关的第四步骤，以及通过决定信号的存在和信号的频率来发送信号检测结果的第五步骤。
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公开(公告)号：KR1020100059703A
公开(公告)日：2010-06-04
申请号：KR1020090113743
申请日：2009-11-24
Applicant: 한국전자통신연구원
Inventor： 경문건
IPC: H04B7/04
CPC classification number: H04B7/0678 , H04B1/7115 , H04B7/0845
Abstract: PURPOSE: A signal transmission-receipt device and a method thereof for removing MPI signal in a multiple antenna communications system are provided to transmit and receive the signal by using pre-rake. CONSTITUTION: A continuous orthogonal spreading code generating unit(210) generates continuous orthogonal spreading code. A spread modulation unit(220) performs the spreading modulation of the user signal by using continuous the orthogonal spreading code. The dispersion modulator generates the spread signal. A pre-rake combination unit(230) combines pre-rake with the spread signal. The pre-rake combiner is created the pre-rake signal. A multiple antenna unit transmits a pre-rake signal through a plurality of antennae.
Abstract translation: 目的：提供一种用于在多天线通信系统中去除MPI信号的信号发送 - 接收装置及其方法，以通过使用前置耙机来发送和接收信号。 构成：连续正交扩展码生成单元（210）生成连续的正交扩展码。 扩展调制单元（220）通过使用连续的正交扩展码来执行用户信号的扩展调制。 色散调制器产生扩展信号。 预耙组合单元（230）将预耙与扩展信号相结合。 前置耙机组合器被创建为前置耙机信号。 多天线单元通过多个天线发送预耙信号。
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公开(公告)号：KR100889561B1
公开(公告)日：2009-03-23
申请号：KR1020070061252
申请日：2007-06-21
Applicant: 한국전자통신연구원 , 서울과학기술대학교 산학협력단
IPC: H04N5/913
Abstract: 본 발명은 일정 시간 내에서 제로가 되는 제로상관구간(ZCD) 코드 및 낮은상관구간(LCD) 코드를 발생시켜 워터마킹함으로써, 송신기를 식별할 수 있는 제로상관구간 또는 낮은상관구간 확산 코드를 이용한 디지털 방송 신호 송신 장치 및 수신 장치와, 이의 송신 방법 및 수신 방법에 관한 것으로, 송신기를 식별하기 위한 코드를 워터마킹하여 전송하는 디지털 방송 신호 송신장치에 있어서, 일정시간구간 동안 연속적인 제로상관구간을 갖고 디지털 방송 데이터 필드에 절단오류없이 삽입될 수 있는 제로상관구간(ZCD) 코드 및 낮은상관구간(LCD) 코드를 생성하는 확산코드 생성수단; 수신기에서 상기 ZCD 코드 및 LCD 코드를 이용해 송신기를 인식할 수 있도록 변조된 방송 신호에 상기 확산코드 생성수단에 의해 생성된 ZCD 코드 및 LCD코드를 워터마킹하는 워터마킹수단; 및 상기 워터마킹된 방송 데이터를 방송 신호로 송출하는 방송신호 송출수단을 포함한다.
TxID, ZCD, 코드, LCD, 제로, 상관, 워터마킹, 디지털, 방송, 송신기, 식별
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