公开(公告)号：KR100603605B1

公开(公告)日：2006-07-24

申请号：KR1020020081941

申请日：2002-12-20

Applicant: 한국전자통신연구원

Inventor： 홍대식 ,  조대순 ,  조성철 ,  이유로 ,  권동승 ,  김성경 ,  오종의 ,  경문건

IPC: H04B7/005

Abstract: 본 발명은 중복 검파 방식을 이용한 이동 통신 시스템의 간섭 제거 방법과 상기 방법을 실현시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체에 관한 것이다. 본 발명의 수신 성능의 저하 없이 접합부 검출 연산의 계산량을 줄이기 위한 중복 검파 방식을 이용한 이동 통신 시스템의 간섭 제거 방법은, 수신 데이터를 중복하는 제 1단계; 및 간섭에 영향을 받지 않는 심벌만을 검출하는 제 2단계를 포함하되, 중복되는 부분의 크기는 최대 시간 지연에 의해 결정되는 것을 특징으로 한다. 본 발명에 따르면, 접합부 검출 과정에서 간섭의 영향을 받은 심벌을 이용하되, 고려되지 않는 심벌의 간섭성분을 완전히 제거함으로써, 수신 성능의 저하 없이 접합부 검출 연산의 계산량을 크게 줄일 수 있도록 하는 효과가 있다.
TD-CDMA, 접합부 검출(Joint Detection), 분해, 중복 검파, 간섭 제거

公开(公告)号：KR1020040055299A

公开(公告)日：2004-06-26

申请号：KR1020020081941

申请日：2002-12-20

Applicant: 한국전자통신연구원

Inventor： 홍대식 ,  조대순 ,  조성철 ,  이유로 ,  권동승 ,  김성경 ,  오종의 ,  경문건

IPC: H04B7/005

Abstract: PURPOSE: An interference removing method of a mobile communication system through joint detection is provided to reduce the amount of calculation in detecting a joint part by completely removing an interference component of a non-considered symbol. CONSTITUTION: Symbols that are not affected by interference can be detected by repeating receiving data vectors. In this case, a size of a repeated portion is affected by maximum time delay. If an interval between symbols is great, the two symbols do not have correlation. Thus, if the number of symbols exceeds a certain size, it does not much affect performance. It is important to search the number of symbols and a size of symbols to be repeated that may reduce the amount of calculation to its maximum without degradation of performance. Such factors can be easily found out if time delay information of a channel could be known. By using repetition techniques, the amount of calculation in the processing detecting a joint part can be considerably reduced without degradation of performance due to influence of interference of the time delay component.

Abstract translation: 目的：提供通过联合检测的移动通信系统的干扰消除方法，以通过完全去除未考虑的符号的干扰分量来减少检测关节部分的计算量。 构成：不受干扰影响的符号可以通过重复接收数据向量来检测。 在这种情况下，重复部分的大小受到最大时间延迟的影响。 如果符号之间的间隔很大，则两个符号不具有相关性。 因此，如果符号数超过一定大小，则对性能没有太大的影响。 搜索要重复的符号数量和符号大小很重要，可以将计算量减少到最大值，而不会降低性能。 如果通道的时间延迟信息可以被知道，则可以容易地发现这些因素。 通过使用重复技术，可以显着地减少检测关节部分的处理中的计算量，而不会由于延迟分量的干扰的影响而导致性能下降。

公开(公告)号：KR100382148B1

公开(公告)日：2003-05-01

申请号：KR1020000062884

申请日：2000-10-25

Applicant: 한국전자통신연구원

Inventor： 경문건 ,  박재준

IPC: H01Q23/00

Abstract: PURPOSE: A systolic array structure for calculating an inverse matrix of a correlation matrix is provided to obtain the inverse matrix of the correlation matrix required for calculating a weighting vector when a space-time array receiving system is employed in a CDMA wireless communication system. CONSTITUTION: A systolic array structure for calculating an inverse matrix of a correlation matrix comprises boundary cells(30), first inner cells(31) and second inner cells(32). At a top triangular(34), received signals are inputted from the antennas(40) to the boundary cells(30) and rotation coefficients are calculated and transferred downward. The first inner cells(31) rotate the received signals by using rotation coefficients to output to the right. The cells of the top triangular(34) store lower triangular components of the correlation matrix for the received signals. At a bottom triangular(36), zeros are inputted to the second inner cells(32) and unitary rotation calculations are performed for the inputted zeros to update hermitian upper triangular components of the inverse matrix of the correlation matrix in the second inner cells(32). The second inner cells(32) modify magnitudes of signals from left cells and rotate the modified signals to output to the right.

Abstract translation: 目的：提供一种用于计算相关矩阵的逆矩阵的脉动阵列结构，以获得当在CDMA无线通信系统中采用空时阵列接收系统时计算加权向量所需的相关矩阵的逆矩阵。 构成：用于计算相关矩阵的逆矩阵的脉动阵列结构包括边界单元（30），第一内部单元（31）和第二内部单元（32）。 在顶三角形（34）处，从天线（40）向边界单元（30）输入接收信号，并且计算旋转系数并向下传送。 第一内部单元（31）通过使用旋转系数来旋转接收到的信号以向右输出。 顶三角（34）的单元存储接收信号的相关矩阵的下三角分量。 在底部三角形（36）处，将零输入到第二内部单元（32），并对输入的零执行单位旋转计算以更新第二内部单元（32）中的相关矩阵的逆矩阵的厄密上部三角分量 ）。 第二内部单元（32）修改来自左侧单元的信号的量值并旋转修改后的信号以向右输出。

公开(公告)号：KR100375826B1

公开(公告)日：2003-03-15

申请号：KR1020000067696

申请日：2000-11-15

Applicant: 한국전자통신연구원

Inventor： 박형근 ,  경문건

IPC: H04B7/216

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：为使用阵列天线在扩频CDMA（码分多址）BTS（基站收发器）操作前向波束形成权值的装置，和用于使用相同的及其方法形成前向波束的系统中提供 简化其结构，最小化对其他终端的干扰，并通过使用响应向量执行波束形成而不是从终端接收的信道信息来增强以期望的终端所处的角度发射的功率。 构成：多个归一化器（201）归一化接收阵列响应向量，其中接收单元的传递函数分量被去除，去除衰落分量并获得接收天线响应向量。 多个天线响应转换器（202）将在多个标准化器（201）中获得的接收天线响应矢量转换为发送天线响应矢量。 多个矢量外积运算单元（203）从多个天线响应转换器（202）接收发送天线响应矢量，并使用矢量外积为每个用户生成空间相关矩阵。 矩阵加法器（204）从多个向量外积算术单元（203）接收空间相关矩阵，将所接收的空间相关矩阵相加，并且向所有用户产生空间相关矩阵。 逆矩阵算术单元（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）相乘，从逆矩阵运算部（205）和发送天线响应矢量接收的逆矩阵从多个天线响应转换器（202）的接收，并且操作前进射束形成的权重值。

公开(公告)号：KR1020030013651A

公开(公告)日：2003-02-15

申请号：KR1020010047762

申请日：2001-08-08

Applicant: 한국전자통신연구원

Inventor： 조성철 ,  조대순 ,  이유로 ,  정인철 ,  권동승 ,  경문건

IPC: H03M13/00

CPC classification number: H03M13/23 ,  H03M13/3707 ,  H03M13/3753

Abstract: PURPOSE: A sequential decoding apparatus of a mobile communication system and a method thereof are provided to efficiently decode a stream of symbols encoded by a convolution code when the stream is transmitted through a channel in the mobile communication system. CONSTITUTION: A CPU(202) controls a total decoding operation. An optimal path determination buffer(210) sequentially stores an optical path. A competitive path determination buffer(210) sequentially stores at least one competitive path. A buffer controller controls the optimal path determination buffer(210) and the competitive path determination buffer(210) using a control signal from the CPU(202). An encoder(214) encodes signals from the optimal path determination buffer(210) and the competitive path determination buffer(210) by the set bit number. A bit metric calculation(216) calculates a metric using the signals from the optimal path determination buffer(210) and the competitive path determination buffer(210) and an input signal.

Abstract translation: 目的：提供一种移动通信系统的顺序解码装置及其方法，用于当通过移动通信系统中的信道发送流时，有效地解码由卷积码编码的符号流。 构成：CPU（202）控制总的解码操作。 最佳路径确定缓冲器（210）顺序地存储光路。 竞争路径确定缓冲器（210）顺序地存储至少一个竞争路径。 缓冲器控制器使用来自CPU（202）的控制信号来控制最优路径确定缓冲器（210）和竞争路径确定缓冲器（210）。 编码器（214）将来自最优路径确定缓冲器（210）和竞争路径确定缓冲器（210）的信号编码设定的位数。 比特度量计算（216）使用来自最佳路径确定缓冲器（210）和竞争路径确定缓冲器（210）的信号和输入信号来计算度量。

公开(公告)号：KR1020020032026A

公开(公告)日：2002-05-03

申请号：KR1020000062884

申请日：2000-10-25

Applicant: 한국전자통신연구원

Inventor： 경문건 ,  박재준

IPC: H01Q23/00

Abstract: PURPOSE: A systolic array structure for calculating an inverse matrix of a correlation matrix is provided to obtain the inverse matrix of the correlation matrix required for calculating a weighting vector when a space-time array receiving system is employed in a CDMA wireless communication system. CONSTITUTION: A systolic array structure for calculating an inverse matrix of a correlation matrix comprises boundary cells(30), first inner cells(31) and second inner cells(32). At a top triangular(34), received signals are inputted from the antennas(40) to the boundary cells(30) and rotation coefficients are calculated and transferred downward. The first inner cells(31) rotate the received signals by using rotation coefficients to output to the right. The cells of the top triangular(34) store lower triangular components of the correlation matrix for the received signals. At a bottom triangular(36), zeros are inputted to the second inner cells(32) and unitary rotation calculations are performed for the inputted zeros to update hermitian upper triangular components of the inverse matrix of the correlation matrix in the second inner cells(32). The second inner cells(32) modify magnitudes of signals from left cells and rotate the modified signals to output to the right.

Abstract translation: 目的：提供一种用于计算相关矩阵的逆矩阵的收缩阵列结构，以获得当在CDMA无线通信系统中采用时空阵列接收系统时计算加权矢量所需的相关矩阵的逆矩阵。 构成：用于计算相关矩阵的逆矩阵的收缩阵列结构包括边界单元（30），第一内单元（31）和第二内单元（32）。 在顶三角形（34）处，从天线（40）向边界单元（30）输入接收信号，并计算转移系数并向下传送。 第一内部单元（31）通过使用向右输出的旋转系数来旋转所接收的信号。 顶部三角形（34）的单元存储接收信号的相关矩阵的较低三角形分量。 在底部三角形（36）处，将零输入到第二内部单元（32），并且对输入的零进行单位旋转计算，以更新第二内部单元（32）中的相关矩阵的逆矩阵的偏移上位三角分量 ）。 第二内部单元（32）修改来自左小区的信号的大小，并将修改的信号旋转到右边输出。

公开(公告)号：KR1020020032004A

公开(公告)日：2002-05-03

申请号：KR1020000062843

申请日：2000-10-25

Applicant: 한국전자통신연구원

Inventor： 경문건 ,  박재준

IPC: H01Q3/38

Abstract: PURPOSE: A CDMA(code division multiple access) smart antenna system is provided to obtain a correlation value of an input signal and a reference signal and a weighting vector by using a traffic channel or some snap shots of a received traffic channel. CONSTITUTION: A CDMA smart antenna system comprises many linear array antennas(50), many RF transceivers(51), many digital beam forming network and weighting vector estimators(52), many finger(53), a rake combiner(55), a reference signal generator(54), and a hard limiter(56). The RF transceivers(51) convert data received from the linear array antennas(50) to digital baseband signals. The digital beam forming network and weighting vector estimators(52) perform beam forming on the baseband signals and calculate weighting vectors. The fingers(53) demodulate the beam forming signals. The rake combiner(55) sums up the demodulated signals. The reference signal generator(54) generates a reference signal for a respreading code to transfer it to the weighting vector estimator(52). The hard limiter(56) performs hard limiting on the output signal of the rake combiner(55) to compensate signature modulated by data.

Abstract translation: 目的：提供CDMA（码分多址）智能天线系统，通过使用业务信道或接收的业务信道的某些快照来获得输入信号和参考信号以及加权矢量的相关值。 构成：CDMA智能天线系统包括许多线性阵列天线（50），许多RF收发器（51），许多数字波束形成网络和加权矢量估计器（52），许多手指（53），耙组合器（55）， 参考信号发生器（54）和硬限幅器（56）。 RF收发器（51）将从线性阵列天线（50）接收的数据转换为数字基带信号。 数字波束形成网络和加权矢量估计器（52）对基带信号进行波束形成并计算加权矢量。 手指（53）解调波束形成信号。 分离器组合器（55）对解调信号进行求和。 参考信号发生器（54）生成用于重新发送码的参考信号，以将其传送到加权矢量估计器（52）。 硬限制器（56）对前置组合器（55）的输出信号执行硬限制，以补偿由数据调制的签名。

公开(公告)号：KR1020010076760A

公开(公告)日：2001-08-16

申请号：KR1020000004115

申请日：2000-01-28

Applicant: 한국전자통신연구원

Inventor： 박형근 ,  경문건 ,  강양기

IPC: H04B7/005

CPC classification number: H04W16/28 ,  H04B7/005 ,  H04B7/0617 ,  H04W74/02

Abstract: PURPOSE: An apparatus for correcting error of an array transmitting/receiving unit and a method thereof are provided to reduce the error of the array transmitting/receiving unit by measuring the characteristic of the transfer function between the channels of the array transmitting/receiving unit and by correcting it in a base band. CONSTITUTION: In an array receiving unit, an I/Q(in-phase/quadrature phase) demodulator(123) multiplies the receiving signal of an IF(intermediate frequency) band by a sine wave having the phase difference of 90 degree to convert a base band signal. In an array-transmitting unit, an I/Q modulator(127) multiplies an I-channel and a Q-channel by a sine wave having the phase difference of 90 degree, and generates the added signal.

Abstract translation: 目的：提供一种用于校正阵列发射/接收单元的误差的装置及其方法，用于通过测量阵列发射/接收单元的信道之间的传递函数的特性和阵列发射/接收单元的信道的特性来减小阵列发射/接收单元的误差， 通过在基带中进行校正。 构成：在阵列接收单元中，I / Q（同相/正交相位）解调器（123）将IF（中频）频带的接收信号乘以具有90度的相位差的正弦波，以将 基带信号。 在阵列发送单元中，I / Q调制器（127）通过相位差为90度的正弦波将I信道和Q信道相乘，并生成相加信号。

公开(公告)号：KR100053046B1

公开(公告)日：1992-07-14

申请号：KR1019880017988

申请日：1988-12-30

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 김덕환 ,  경문건 ,  신동진 ,  이형호

IPC: H04L27/26 ,  H04L12/12

公开(公告)号：KR1019920002901B1

公开(公告)日：1992-04-06

申请号：KR1019880017988

申请日：1988-12-30

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 김덕환 ,  경문건 ,  신동진 ,  이형호

IPC: H04L27/26 ,  H04L12/12

Abstract: The first step is to initialize a signal information detecting mode for receiving signal information. Then a checking finds whether the transmitted signal information is inputted. Then the signal codes are detected from among the inputted signal information, and null signals are detected from among the inputted signal information to store them. Then the system is returned to the initial stage to receive the next signal information. The method improves the utilization efficiency of the signal servicing apparatus to the economy of the operation.

Abstract translation: 第一步是初始化用于接收信号信息的信号信息检测模式。 然后检查是否输入发送的信号信息。 然后从输入的信号信息中检测信号码，并从输入的信号信息中检测出零信号以存储它们。 然后将系统返回到初始阶段以接收下一个信号信息。 该方法提高了信号维修装置对操作经济性的利用效率。