公开(公告)号：KR1020030068813A

公开(公告)日：2003-08-25

申请号：KR1020020008451

申请日：2002-02-18

Applicant: 한국전자통신연구원

Inventor： 이승환 ,  김응배 ,  김남일 ,  백승권

IPC: H04L7/04

CPC classification number: H04L7/0054 ,  H04L7/0334 ,  H04L7/0337

Abstract: PURPOSE: An apparatus and a method for synchronizing a digital symbol are provided to obtain the resolution of a narrower interval than an interval of sampling frequencies by using only one A/D converter. CONSTITUTION: An apparatus for synchronizing a digital symbol includes an A/D conversion portion(100), a symbol timing calculation portion(200), a timing decision portion(300), and an A/D clock supply portion(400). The A/D conversion portion performs an oversampling process for a received analog signal to a digital signal according to a clock. The symbol timing calculation portion calculates a symbol timing value from the oversampled signal in a sample interval. The timing decision portion decides the symbol timing from the symbol timing value. The A/D clock supply portion supplies an A/D clock to the A/D conversion portion according to the symbol timing information.

Abstract translation: 目的：提供用于同步数字符号的装置和方法，以通过仅使用一个A / D转换器来获得比采样频率的间隔更窄的间隔的分辨率。 构成：数字符号同步的装置包括A / D转换部分（100），符号定时计算部分（200），定时判定部分（300）和A / D时钟提供部分（400）。 A / D转换部分根据时钟对接收的模拟信号执行对数字信号的过采样处理。 符号定时计算部分在采样间隔中从过采样信号计算符号定时值。 定时决定部分根据符号定时值确定符号定时。 A / D时钟提供部分根据符号定时信息将A / D时钟提供给A / D转换部分。

公开(公告)号：KR100392385B1

公开(公告)日：2003-07-23

申请号：KR1020010013560

申请日：2001-03-16

Applicant: 한국전자통신연구원

Inventor： 김남일 ,  김응배 ,  오창열 ,  백승권

IPC: H04N7/015

Abstract: PURPOSE: A carrier wave recovering device for digital demodulation is provided to improve the signal recovery performance in the digital demodulation of signals distorted by the frequency offset, phase offset and the interference between symbols in multiple paths, by using a carrier wave recovering device incorporating an equalizer. CONSTITUTION: A carrier wave recovering device for digital demodulation includes a carrier wave recovering element(214) for compensating the phase and frequency errors with respect to an input signal according to a frequency control value, an equalizer(215) for receiving the signal from the carrier wave recovering element to compute an error due to the phase and the interference between symbols caused by the multiple paths, thereby correcting the signal distortion, and a sweeping element(216) for receiving the computed frequency error to transmit the frequency control value to the carrier wave recovering element according to the size of the error.

Abstract translation: 目的：提供一种用于数字解调的载波恢复装置，用于通过使用载波恢复装置来提高由于频率偏移，相位偏移以及多路径中的符号之间的干扰而导致的数字解调信号恢复性能， 均衡器。 一种用于数字解调的载波恢复设备，包括：一个载波恢复单元（214），用于根据一个频率控制值补偿相对于一个输入信号的相位和频率误差;一个均衡器（215），用于接收来自 载波恢复单元，用于计算由于多个路径引起的相位和符号之间的干扰而导致的误差，从而校正信号失真;以及扫频单元（216），用于接收计算的频率误差以将频率控制值发送到 载波恢复元件根据误差的大小而定。

公开(公告)号：KR1020030055412A

公开(公告)日：2003-07-04

申请号：KR1020010084932

申请日：2001-12-26

Applicant: 한국전자통신연구원

Inventor： 김응배 ,  이승환

IPC: H04W8/08

CPC classification number: H04W64/00 ,  G01S3/16 ,  G01S3/40 ,  G01S5/12 ,  G01S11/02 ,  G01S11/06 ,  G01S11/08

Abstract: PURPOSE: A device for tracking a position of a mobile terminal and a method therefor are provided to vertically beam-form a beam forming antenna from distance and azimuth positions, and to measure up to an altitude angle of the mobile terminal, then to update distance, azimuth, and the altitude angle at certain time intervals, thereby exactly obtaining a 3-dimensional position of the mobile terminal. CONSTITUTION: A beamforming antenna(10) receives a signal from a mobile terminal. A distance measurer(110) measures distance between a wireless base station and the mobile terminal from the received signal. An azimuth measurer(130) measures an azimuth of the mobile terminal for the wireless base station through a beamforming scanning process in horizontal direction of the beamforming antenna(10). An altitude angle measurer(140) measures an altitude angle of the mobile terminal through a beamforming scanning process in vertical direction. A position determiner(150) operates the signals outputted from the azimuth measurer(130) and the altitude angle measurer(140), and determines a position of the mobile terminal, then updates the mobile terminal.

Abstract translation: 目的：提供用于跟踪移动终端的位置的装置及其方法，用于从距离和方位位置垂直地射束形成波束形成天线，并且测量到移动终端的高度角，然后更新距离 ，方位角和某一时间间隔的高度角，从而准确地获得移动终端的3维位置。 构成：波束形成天线（10）从移动终端接收信号。 距离测量器（110）根据接收到的信号测量无线基站与移动终端之间的距离。 方位测量器（130）通过波束形成天线（10）的水平方向上的波束形成扫描处理来测量无线基站的移动终端的方位角。 高度角测量器（140）通过垂直方向上的波束成形扫描处理来测量移动终端的高度角。 位置确定器（150）操作从方位测量器（130）和高度角测量器（140）输出的信号，并确定移动终端的位置，然后更新移动终端。

公开(公告)号：KR1020020073761A

公开(公告)日：2002-09-28

申请号：KR1020010013560

申请日：2001-03-16

Applicant: 한국전자통신연구원

Inventor： 김남일 ,  김응배 ,  오창열 ,  백승권

IPC: H04N7/015

CPC classification number: H04L25/03019 ,  H04L27/3818 ,  H04L2025/03522 ,  H04L2025/03598

Abstract: PURPOSE: A carrier wave recovering device for digital demodulation is provided to improve the signal recovery performance in the digital demodulation of signals distorted by the frequency offset, phase offset and the interference between symbols in multiple paths, by using a carrier wave recovering device incorporating an equalizer. CONSTITUTION: A carrier wave recovering device for digital demodulation includes a carrier wave recovering element(214) for compensating the phase and frequency errors with respect to an input signal according to a frequency control value, an equalizer(215) for receiving the signal from the carrier wave recovering element to compute an error due to the phase and the interference between symbols caused by the multiple paths, thereby correcting the signal distortion, and a sweeping element(216) for receiving the computed frequency error to transmit the frequency control value to the carrier wave recovering element according to the size of the error.

Abstract translation: 目的：提供一种用于数字解调的载波恢复装置，通过使用载波回波装置，在多路径中通过频偏，相位偏移和符号之间的干扰，对数字解调中的信号恢复性能进行改进， 均衡器。 构成：用于数字解调的载波恢复装置包括用于根据频率控制值补偿相对于输入信号的相位和频率误差的载波恢复元件（214），用于接收来自 载波回波元件，用于计算由于由多个路径引起的相位和符号之间的干扰引起的误差，从而校正信号失真;以及扫描元件（216），用于接收计算出的频率误差以将频率控制值发送到 载波恢复元件根据误差的大小。

公开(公告)号：KR100164090B1

公开(公告)日：1998-12-01

申请号：KR1019950052645

申请日：1995-12-20

Applicant: 한국전자통신연구원

Inventor： 김광식 ,  한영남 ,  김응배 ,  한기철

IPC: H04B5/04

Abstract: 본 발명은 부호분할 다중접속방식 이동통신시스템(CDMA Mobile Systems 이하, CMS라 칭함)에서 간단한 문자전달서비스를 제공하기 위한 페이징(paging)서비스 제공방법에 관한 것으로, 이동단말(MS)이 이동전화교환국(MSC/VLR)으로 SCI 변경을 위해 위치등록을 수행하는 제 1 단계; 발신자(PSTN/SME나 MS)가 착신 호를 요구하면 이동전화교환국(MSC)이 착신 이동단말(MS)의 전원 상태(Power ON)와 SCI(Slot Cycle Index)를 조사하는 제 2 단계; 조사결과, 착신 이동 단말(MS)이 전원은 켜져있지만 SCI가 기준치 이상이면 페이징 서비스만 가능함을 발신자에게 알리는 제 3 단계; 발신자가 페이징 서비스를 선택하면 이동전화교환국(MSC)과 발신자간에 페이징 서비스 정보를 송수신하는 제 4 단계; 상기 이동전화교환국(MSC)이 수신한 메시지를 이동단말(MS)로 보내어 슬롯페이징을 수행하는 제 5 단계를 포함하는 것을 특징으로 하여, 단말의 전력낭비를 줄이고 전원상태 변경에 위치등록 빈도가 감소하는 효과가 있다.

公开(公告)号：KR1019950022622A

公开(公告)日：1995-07-28

申请号：KR1019930030884

申请日：1993-12-29

Applicant: 한국전자통신연구원

Inventor： 김응배 ,  임선배 ,  이택희

IPC: H04M3/22

Abstract: 본 발명은 홈위치 등록레지스터(HLR)에서 이동국의 위치정보, 가입자의 서비스정보, 지능망 신호정보와 과금정보의 송수신을 담당하는 주전산기안 SSM-6000과 공통선메시지 전달프로세서(CMP)사이의 물리적인 연결통로를 구성하여, 주전산기인 SSM-6000이 연결통로인 공통선메시지 전달프로세서 연결유니트(CIFU)를 구동하는 장치 및 방법에 관한 것이다.