公开(公告)号：KR1020040052008A

公开(公告)日：2004-06-19

申请号：KR1020020079725

申请日：2002-12-13

Applicant: 한국전자통신연구원

Inventor： 진밍루 ,  김수영 ,  오덕길 ,  김재명

IPC: H03H21/00

CPC classification number: H03H21/0012

Abstract: PURPOSE: An interactive filter and a method for filtering the same are provided to have an effect to reduce the complexity of operation. CONSTITUTION: An interactive filter includes a dividing device(401), a sub filtering part(402), an adder(403), an error operation part(404), a pair of filter coefficient update parts(405,406) and a switch(407). The dividing part(401) divides the N number of input signals into G number of signal groups. The sub filtering part(402) performs the filtering to the corresponding signal group. The adder(403) adds the output signals of the sub filtering part(402). The error operation part(404) generates the error signals by comparing the output signal of the adder(403) with the requiring signal. The pair of filter coefficient update parts(405,406) update the filter coefficients of the sub filtering part(402) based on the error signals. And, the switch(407) selectively inputs an error signal to the anyone iteration number k to one selected among the filter coefficient update parts(405,406).

Abstract translation: 目的：提供交互式过滤器及其过滤方法，以有效降低操作的复杂性。 构成：交互式滤波器包括分频装置（401），子滤波部分（402），加法器（403），误差运算部分（404），一对滤波器系数更新部分（405,406）和开关 ）。 分割部（401）将N个输入信号分割为G个信号组。 子滤波部分（402）对相应的信号组进行滤波。 加法器（403）将副滤波部分（402）的输出信号相加。 误差运算部（404）通过将加法器（403）的输出信号与要求信号进行比较来生成误差信号。 一对滤波器系数更新部（405,406）基于误差信号来更新子滤波部（402）的滤波器系数。 并且，开关（407）选择性地将任意迭代数k的误差信号输入到在滤波器系数更新部分（405,406）中选择的一个。

公开(公告)号：KR1020040047455A

公开(公告)日：2004-06-05

申请号：KR1020020075685

申请日：2002-11-30

Applicant: 한국전자통신연구원

Inventor： 강병수 ,  김영완 ,  김내수 ,  오덕길 ,  서철헌 ,  임석순 ,  김재훈

IPC: H01P7/08

CPC classification number: H01P1/20381

Abstract: PURPOSE: An open loop resonant filter is provided to obtain wide band characteristics without causing degradation of group delay characteristics by forming an opening on a ground surface. CONSTITUTION: An open loop resonant filter comprises one or more open loop resonators formed into a microstrip line on a dielectric(220); and one or more openings(210) formed by removing a predetermined portion of a ground surface(230) formed on the dielectric. Each of the open loop resonators is constituted by two open loops(110,120). The opening is formed on the ground surface located at the position corresponding to the portion where coupling of the open loop resonators occurs.

Abstract translation: 目的：提供开环谐振滤波器以获得宽带特性，而不会在地表面上形成开口而导致群延迟特性的退化。 构成：开环谐振滤波器包括形成在电介质（220）上的微带线中的一个或多个开环谐振器; 以及通过去除形成在电介质上的接地表面（230）的预定部分而形成的一个或多个开口（210）。 每个开环谐振器由两个开环（110,120）构成。 开口形成在位于与开环谐振器的耦合发生的部分对应的位置的地面上。

公开(公告)号：KR1020040046533A

公开(公告)日：2004-06-05

申请号：KR1020020074480

申请日：2002-11-27

Applicant: 한국전자통신연구원

Inventor： 임광재 ,  김수영 ,  오덕길

IPC: H04B7/204 ,  H04W84/06

CPC classification number: H04B7/2041 ,  H04B7/216

Abstract: PURPOSE: A device for transmitting a packet in a downlink of a multi-beam satellite communication system and a method therefor are provided to use the same PN(Pseudo Noise) scrambling code in all multi beams of a forward downlink satellite, and to share an orthogonal spread code set, thereby minimizing beam interference and increasing a system capacity. CONSTITUTION: A synchronization sub frame transmits a synchronization chip sequence having predetermined patterns through all sub carriers. All beams have the same synchronization chip sequence. The synchronization chip sequence is used for easily obtaining a downlink signal when a mobile terminal firstly receives a signal of a system, such that a user can estimate a channel state of a transmission link between a satellite and the mobile terminal as obtaining synchronization for a frame start point. A control sub frame transmits system information, user paging, and a control packet to the user. A traffic sub frame transmits a data packet, and informs the user of a used wireless resource, such that the user can receive the packet transmitted through the traffic sub frame.

Abstract translation: 目的：提供一种用于在多波束卫星通信系统的下行链路中发送分组的装置及其方法，以在前向下行链路卫星的所有多波束中使用相同的PN（伪噪声）扰码，并且共享 正交扩展码集合，从而最小化波束干扰并增加系统容量。 构成：同步子帧通过所有子载波发送具有预定模式的同步码片序列。 所有波束具有相同的同步码片序列。 当移动终端首先接收到系统的信号时，同步码片序列用于容易地获得下行链路信号，使得用户可以估计卫星和移动终端之间的传输链路的信道状态来获得帧的同步 起点。 控制子帧向用户发送系统信息，用户寻呼和控制分组。 业务子帧发送数据包，并向用户通知所使用的无线资源，使得用户可以接收通过业务子帧发送的分组。

公开(公告)号：KR1020030095103A

公开(公告)日：2003-12-18

申请号：KR1020020032626

申请日：2002-06-11

Applicant: 한국전자통신연구원

Inventor： 강군석 ,  최권휴 ,  김수영 ,  오덕길

IPC: H04B14/00

CPC classification number: H04B14/002 ,  H04B1/707 ,  H04J13/18

Abstract: PURPOSE: A code management method on multi carrier communication is provided to optimize codes for user codes and miniaturized symbol combinations only, thereby maintaining a minimal PAR(Peak-to-Average Ratio) and reducing complexity by calculating a PAR near to the minimal PAR. CONSTITUTION: A system initializes a user counter as 1(S1), initializes a reference PAR index value as a maximum value(S2), and initializes an orthogonal code counter(S3). The system checks whether an orthogonal code is pre-assigned(S4). If not, the system assigns the orthogonal code to a user, and calculates a temporary PAR index value(S5). The system compares the temporary PAR index value with the reference PAR index value(S6). If the reference PAR index value is bigger, the system resets the temporary PAR index value to the reference PAR index value(S7), and sets the orthogonal code to a temporary assignment code of the user(S8). The orthogonal code counter is increased by 1(S9). The system confirms whether all processes are completed(S10). If so, the system sets the temporary assignment code for the user counter, and increases the user counter by 1(S11,S12), then checks whether assignment codes for all users are set(S13). The orthogonal code assignment process is terminated(S14).

Abstract translation: 目的：提供多载波通信的代码管理方法，以优化用户代码和小型化符号组合的代码，从而通过计算靠近最小PAR的PAR来保持最小的PAR（峰值平均比）并降低复杂性。 构成：系统将用户计数器初始化为1（S1），将参考PAR索引值初始化为最大值（S2），并初始化正交码计数器（S3）。 系统检查是否预分配正交码（S4）。 如果不是，则系统将正交码分配给用户，并计算临时PAR索引值（S5）。 系统将临时PAR指数值与参考PAR指数值进行比较（S6）。 如果参考PAR索引值较大，则系统将临时PAR索引值重置为参考PAR索引值（S7），并将正交码设置为用户的临时分配代码（S8）。 正交码计数器增加1（S9）。 系统确认所有过程是否完成（S10）。 如果是，则系统设置用户计数器的临时分配码，并将用户计数器增加1（S11，S12），然后检查是否设置了所有用户的分配码（S13）。 正交码分配处理结束（S14）。

公开(公告)号：KR1020030076002A

公开(公告)日：2003-09-26

申请号：KR1020020015624

申请日：2002-03-22

Applicant: 한국전자통신연구원

Inventor： 안동현 ,  이현 ,  임춘식 ,  오덕길

IPC: H04B7/155

CPC classification number: H04W16/26 ,  H04W16/30 ,  H04W84/10 ,  H04W88/085 ,  H04W88/12

Abstract: PURPOSE: A DSRC(Dedicated Short Range Communication) system and a time division control method for roadside base transceiver systems therein are provided to ensure a better connection rate to the terminals installed in vehicles, passing through a specific area, by separately installing the antennas in a roadside base station and suitably controlling an individual radio communication area, settled by the characteristics of each antenna, through a base station processor or a time division operation controller. CONSTITUTION: A time division control system for RF transceivers(3051-3053) comprises a service center(301), a base station processor(303), and a network(302). The network(302) connects the service center(301) with the base station processor(303). The base station processor(303) creates switching signals according to a preappointed switching algorithm besides data transmit/receive processing and frame control and transmits them to an antenna switch(304). Supposing that vehicle-mounted terminals(3061-3063) can communicate with the antenna of the RF transceiver(3051), vehicle-mounted terminals(3064-3066) cannot communicate with the antenna of the RF transceiver(3051), vehicle-mounted terminals(3063-3065) can communicate with the antenna of the RF transceiver(3052), vehicle-mounted terminals(3061,3062,3066) cannot communicate with the antenna of the RF transceiver(3052), vehicle-mounted terminals(3062-3066) can communicate with the antenna of the RF transceiver(3053), and a vehicle-mounted terminal(3061) cannot communicate with the antenna of the RF transceiver(3053), every vehicle gets to a communication-possible state more than once within 1 cycle by connecting the three RF transceivers(3051-3053) in order in a time division method.

Abstract translation: 目的：提供一种DSRC（专用短距离通信）系统及其路边基地收发系统的时分控制方法，以确保通过单独安装天线以确保通过特定区域安装在车辆中的终端更好的连接速率 路边基站，并且通过基站处理器或时分运算控制器适当地控制由各天线的特性确定的各个无线通信区域。 构成：用于RF收发器（3051-3053）的时分控制系统包括服务中心（301），基站处理器（303）和网络（302）。 网络（302）将服务中心（301）与基站处理器（303）连接。 基站处理器（303）除了数据发送/接收处理和帧控制之外，根据预先指定的切换算法产生切换信号，并将它们发送到天线开关（304）。 假设车载终端（3061-3063）可以与RF收发器（3051）的天线通信，车载终端（3064-3066）不能与RF收发器（3051）的天线通信，车载终端 （3063-3065）可以与RF收发器（3052）的天线通信，车载终端（3061,3062,3066）不能与RF收发器（3052）的天线通信，车载终端（3062-3066） ）可以与RF收发器（3053）的天线进行通信，并且车载终端（3061）不能与RF收发器（3053）的天线通信，每个车辆在1以内可能处于通信可能状态多于一次 按照时分法顺序连接三个射频收发器（3051-3053）。

公开(公告)号：KR100375823B1

公开(公告)日：2003-03-15

申请号：KR1020000083017

申请日：2000-12-27

Applicant: 한국전자통신연구원

Inventor： 최은아 ,  김진호 ,  김내수 ,  오덕길

IPC: H03M13/41

CPC classification number: H03M13/6362 ,  H03M13/395 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/4107

Abstract: A structure and a method for depuncturing an input bit stream being input to a Viterbi decoder when the Viterbi decoder is designed by using a Radix-4 branch metric calculator in a method for designing the Viterbi decoder that decodes a punctured code at a high-speed, are disclosed. A depuncture structure for Radix-4 branch metric calculation in a high-speed Viterbi decoder includes four FIFOs, four multiplexers, and one Radix-4 branch metric calculator. Two input bit streams of I and Q are connected to two upper FIFOs and two lower FIFOs. An output terminal of FIFO is connected to upper and lower multiplexers of the next stage. One output terminal of each multiplexer is connected to Radix-4 branch metric calculator. As a result, Radix-4 branch metric calculation can be achieved by using the same clock as a clock speed of the input I and Q bit streams. This structure and this method can be applied to a depuncturing process for Radix-4 branch metric calculation of all punctured codes derived from ½code.

Abstract translation: 一种用于在设计维特比解码器的方法中通过使用基数-4分支度量计算器来设计维特比解码器时输入到维特比解码器的结构和方法，所述维特比解码器以高速解码穿孔码 ，被披露。 用于高速维特比解码器中基数-4分支度量计算的解套结构包括四个FIFO，四个多路复用器和一个基数-4分支度量计算器。 I和Q的两个输入比特流连接到两个较高的FIFO和两个较低的FIFO。 FIFO的输出端连接到下一级的上下多路复用器。 每个多路复用器的一个输出端连接到基数-4分支度量计算器。 结果，基数-4分支度量计算可以通过使用与输入I和Q比特流的时钟速度相同的时钟来实现。 该结构和该方法可以应用于从＆frac12; code派生的所有收缩代码的基数-4分支度量计算的收缩处理过程。

公开(公告)号：KR1020020048496A

公开(公告)日：2002-06-24

申请号：KR1020000077633

申请日：2000-12-18

Applicant: 한국전자통신연구원

Inventor： 표철식 ,  이종문 ,  윤영근 ,  오덕길

IPC: H04B7/195

CPC classification number: H04B7/18519 ,  H04B7/0404

Abstract: PURPOSE: An active antenna apparatus for the mobile reception of a multi satellite signal and the chasing method are provided to receive the satellite signal of an another different polarization and receive the desired satellite signal in moving under the existence of the multi satellite signal having same polarization and frequency. CONSTITUTION: A radome(1) protects the system from the outside. A radiation module(2) can receive an electric wave of double polarized wave and a multiple satellite signal. The multiple satellite signal is inputted to the radiation module(2) passing through the radome(1). An active channel module(3) amplifies the received satellite signal as a low noise. A beam formation module(4) controls the phase of a phase displacement device. A multiple satellite chasing controller(9) controls the chasing of the desired polarized satellite signal among the multiple satellite signal when moving.

Abstract translation: 目的：提供一种用于多卫星信号的移动接收的有源天线装置和追迹方法，用于接收另一不同极化的卫星信号，并在存在具有相同极化的多卫星信号的情况下在移动中接收所需的卫星信号 和频率。 规定：天线罩（1）保护系统免受外界干扰。 辐射模块（2）可以接收双极化波和多个卫星信号的电波。 多个卫星信号被输入到穿过天线罩（1）的辐射模块（2）。 有源信道模块（3）将接收到的卫星信号放大为低噪声。 光束形成模块（4）控制相位装置的相位。 多卫星追逐控制器（9）在移动时控制多个卫星信号中所需的偏振卫星信号的追逐。

公开(公告)号：KR100327905B1

公开(公告)日：2002-03-09

申请号：KR1020000004135

申请日：2000-01-28

Applicant: 한국전자통신연구원

Inventor： 송윤정 ,  김명섭 ,  오덕길

IPC: H04L27/00

Abstract: 본 발명은, 고속 전송을 위한 보간 필터를 이용한 디지털 심볼 타이밍 복원 장치의 병렬 처리 구조에 관한 것이다. 특히 수신된 신호를 기저 대역에서 디지털로 심볼 타이밍의 위상을 복원하기 위하여 고정 클록에 의해서 구동되는 A/D 변환기의 출력을 정합 필터를 거쳐서 신호를 필터링하는 것과; 보간 필터를 이용하여 신호를 보간한 후, 타이밍 오차 검출기로부터 심볼 타이밍 위상차를 검출하는 것과; 검출된 심볼 타이밍 위상차에 따라 제어 회로에서 보간 필터의 계수 선택을 통해서 타이밍 위상차를 제거하는 기능을 수행한다. 또한, 고속에서 동작하는 보간 필터를 제공하기 위해서 보간 필터의 입력 시퀀스와 필터 출력을 병렬 처리하고, 이를 위해 두 심볼 당 심볼 타이밍 오차를 검출한 후 심볼 타임 샘플 값을 취하며, 심볼 당 4 샘플 기준으로 처리된 정합 필터 출력을 보간 필터의 입력으로 받아들이고, 이를 4 x N 크기의 레지스터에 저장한 후 제어 회로에서 제공하는 제어 신호에 따라 사용 입력 시퀀스의 선택과 필터 계수의 선택을 행하는 것과, 선택된 신호 시퀀스와 보간 필터의 계수 간의 곱은 계산량이 많고 계산 시간이 많이 소모되므로 이를 해결하기 위하여 입력 신호에 따른 계산 결과를 순람(Lookup) 표를 이용하여 계산 결과를 출력하는 방법을 제공하는 것을 특징으로 하는 보간 필터를 사용한 타이밍 복원 병렬 처리방법과 장치를 제공하는 것이다.

公开(公告)号：KR1019990050401A

公开(公告)日：1999-07-05

申请号：KR1019970069520

申请日：1997-12-17

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 조성배 ,  이수인 ,  오덕길

IPC: H04N7/08

Abstract: 본 발명은 엠펙-2(MPEG-2) 전송 스트림(TS:Transport Stream) 재다중화기 및 재다중화 방법에 관한 것으로, TS패킷열 데이터를 입력받아 일시 저장하기 위한 FIFO와, PCR유무를 확인하여 PCR을 포함하고 있는 경우 시간 지연을 계산한 후 PCR을 정정하는 PCR 정정부를 구비하여 복수개로 배열되는 입력 취급기와; 입력 취급기에 클럭을 제공하기 위한 27MHz 오실레이터와; 입력 취급기로부터 FIFO에 저장되어 있는 TS패킷열의 양을 나타내는 상태 정보를 전달받아 스케줄링 알고리즘에 따라 다음에 다중화할 입력 취급기를 결정하고 이를 해당 입력 취급기에게 알려주는 스케쥴러와; 다중화 선택신호를 받은 입력 취급기가 출력 클럭 및 TS 프레임 동기에 맞춰 하나의 TS패킷열을 출력하게 하고, 출력된 TS패킷열에 PCR정보가 포함되어 있는 경우에는 PCR 정정부를 이용하여 원래의 PCR값 위치에 정정된 PCR값으로 대체하여 출력하게 하기 위한 TDM 다중화기로 구성하여 PCR을 정정할 때 모든 입력 전송 스트림패킷열이 동일하게 갖는 최소 지연 시간을 고려하여 PCR값을 정정함으로써 다중화 과정에서 발생하는 램덤한 시간지연에 대해서도 MPEG복호기가 안정적으로 복호과정을 수행할 있게 한다.

公开(公告)号：KR1019940010847B1

公开(公告)日：1994-11-17

申请号：KR1019910006885

申请日：1991-04-29

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 이형호 ,  홍현하 ,  오덕길

IPC: H04L12/40 ,  H04L12/801

Abstract: The bus occupation arbitrator controls the situation when processors occupy packet bus to send or receive the data. This arbitrator enhances quality of service providing many bus occupation opportunities to the packet controller. Packet subscribers are connected to the packet switching system through a time switch (6) and the packet switching system is connected to an inter-process communication bus (5). This arbitrator provides services through X.25 protocol controlled by high-level processor (4) connected to the inter-process communication bus. A packet switching system is composed of the bus occupation arbitrator (1), a packet call controller (2) and a packet processor (3).

Abstract translation: 总线占用仲裁员控制处理器占用分组总线发送或接收数据时的情况。 该仲裁员提高了服务质量，为数据包控制器提供许多总线占用机会。 分组用户通过时间交换机（6）连接到分组交换系统，并且分组交换系统连接到进程间通信总线（5）。 该仲裁器通过连接到进程间通信总线的高级别处理器（4）控制的X.25协议提供服务。 分组交换系统由总线占用仲裁器（1），分组呼叫控制器（2）和分组处理器（3）组成。