公开(公告)号：KR1019890011297A

公开(公告)日：1989-08-14

申请号：KR1019870014079

申请日：1987-12-10

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 경문건 ,  백제인 ,  이형호

IPC: H04M3/00 ,  H04Q1/30

Abstract: 내용 없음

公开(公告)号：KR1020130073397A

公开(公告)日：2013-07-03

申请号：KR1020110141222

申请日：2011-12-23

Applicant: 한국전자통신연구원

Inventor： 경문건

IPC: H04J13/00 ,  H04B1/69

CPC classification number: H04J13/0074 ,  H04B1/7093 ,  H04B2001/6904 ,  H04J13/0055

Abstract: PURPOSE: A continuous orthogonal band diffusion code hopping multiplexing method at a non-interference wireless communication CDMA system is provided to increase dramatically the number of downlink channels of CDMA non-interference wireless mobile communications system based on a continuous orthogonal band diffusion code having a small family size. CONSTITUTION: A transmitter (210) transmits a signal to a receiver (230) through a multipath (220). A free-rake transmitter connected to a ZCD (Zero Correlation Duration) code comprises a spreader (211), a ZCD code generator (212), a code hopping multiplexer (213), and a free-rake coupler (214). A receiver outputs an input signal passing a multipath channel through a matched filter (231) and a decision unit (232) after adding a noise signal to an input signal. [Reference numerals] (210) Transmitter (BS); (211) Spreader; (212) ZCD code generator; (213) Code hopping multiplexer; (214) Free-rake coupler; (220,AA) Multipath channel; (230) Receiver (MS); (231) Matched filter; (232) Decision unit; (BB) Noise n (t); (CC) Single path receiver

Abstract translation: 目的：提供一种在非干扰无线通信CDMA系统下的连续正交频带扩散码跳频多路复用方法，以基于具有小的无线通信CDMA的连续正交频带扩散码，大大增加CDMA无干扰无线移动通信系统的下行链路信道数量 家庭大小 构成：发射机（210）通过多路径（220）将信号发送到接收机（230）。 连接到ZCD（零相关持续时间）码的自由耙式发射机包括扩展器（211），ZCD码发生器（212），跳码多路复用器（213）和自由耙耦合器（214）。 在将噪声信号加到输入信号之后，接收器通过匹配滤波器（231）和决定单元（232）输出通过多径信道的输入信号。 （附图标记）（210）发射机（BS）; （211）撒布机; （212）ZCD码发生器; （213）跳码多路复用器; （214）自由耙式联轴器; （220，AA）多路径通道; （230）接收器（MS）; （231）匹配滤波器; （232）决策单位; （BB）噪声n（t）; （CC）单路接收器

公开(公告)号：KR1020110073235A

公开(公告)日：2011-06-29

申请号：KR1020100098232

申请日：2010-10-08

Applicant: 한국전자통신연구원

Inventor： 경문건 ,  최윤호 ,  이우용

IPC: H04W16/28 ,  H04W92/02

CPC classification number: H04W92/02 ,  H04B7/0408 ,  H04B7/0615 ,  H04W16/28

Abstract: PURPOSE: An ultra wideband communication modem is provided to control a direction of a directional antenna. CONSTITUTION: An RF processing unit(140) drops a frequency of the received ultra wideband signal. The RF processing unit transmits the ultra wideband signal which frequency is descended to a parallel-to-serial converter. The RF processing unit increases a frequency of a serial signal received from the parallel-to-serial converter. The RF processing unit transmits a serial signal which frequency is increased to a directional beam antenna(150). The directional beam antenna transceives a wireless signal by forming the directional beam. The directional beam antenna has a structure which can control the direction of the directional beam.

Abstract translation: 目的：提供超宽带通信调制解调器来控制定向天线的方向。 构成：RF处理单元（140）降低所接收的超宽带信号的频率。 RF处理单元将频率下降的超宽带信号发送到并行到串行转换器。 RF处理单元增加从并行到串行转换器接收的串行信号的频率。 RF处理单元将频率增加的串行信号发送到定向波束天线（150）。 定向波束天线通过形成定向波束收发无线信号。 定向波束天线具有能够控制定向波束方向的结构。

公开(公告)号：KR100641797B1

公开(公告)日：2006-11-02

申请号：KR1020060099124

申请日：2006-10-12

Applicant: 한국전자통신연구원 ,  한국과학기술원

Inventor： 박수원 ,  권재균 ,  신강수 ,  정재훈 ,  윤지영 ,  문성호 ,  박수미 ,  성단근 ,  경문건 ,  차재상 ,  이서영 ,  송석일 ,  손인수 ,  조주필 ,  김재준 ,  이희수

IPC: H04B1/7143 ,  H04L27/34 ,  H04J11/00

Abstract: 본 발명은 다차원 도약 패턴 충돌시 충돌 구간에서의 송신 제어 방법 및 장치에 관한 것이다. 본 발명에서는 주어진 직교 무선 자원을 송신측 및 수신측 사이의 통신 규약에 의하여 다차원 직교 자원 영역에서 도약 선택하며, 해당 채널은 다차원 도약 패턴에 의하여 구별된다. 이때, 제2 통신국별로 특정한 다차원 도약 패턴을 할당하고, 다차원 도약 패턴은 제2 통신국에 영구적으로 할당될 수도 있고, 호설정시에 제1 통신국으로부터 할당받을 수도 있다. 또한, 다차원 직교 자원 도약 패턴이 각 제2 통신국에게 영구적으로 할당되는 것은 제2 통신국의 ESN(Electronic Serial Number) 등과 같이 유일한 식별자를 바탕으로 다차원 도약 패턴이 정해질 때이다. 이런 경우, 제2 통신국의 다차원 도약 패턴이 서로 독립이기 때문에 특정 순간에 동일한 직교 자원 좌표가 서로 다른 제2 통신국에 동시에 할당될 수 있다. 본 발명에 따르면, 다차원 직교 자원 도약 다중화 방식을 채택한 시스템의 성능을 향상시키기 위하여 전송과 천공의 2분법적으로 이루어지는 다차원 직교 자원 도약 패턴 충돌시 처리 방법을 세분화함으로써 천공의 경우를 줄일 수 있다.
직교 자원, 도약 패턴, 다차원, 충돌, 다중화

公开(公告)号：KR100444822B1

公开(公告)日：2004-08-18

申请号：KR1020010047552

申请日：2001-08-07

Applicant: 한국전자통신연구원

Inventor： 정재호 ,  박형근 ,  오현서 ,  경문건

IPC: H01Q3/22

CPC classification number: H01Q3/267

Abstract: The present invention utilizes a calibration signal weight vector as a response vector corresponding to a predetermined orientation angle of the antenna, thereby reducing an interference signal and enhancing a data communication effectively. The calibration method of an array antenna begins with generating a calibration signal in order to measure a transfer function of an array receiving means. A calibration signal vector is injected into the array receiver/transmitter, after multiplying a divided calibration signal and a predetermined weight vector corresponding to each channel together. The divided calibration signal is obtained by dividing the calibration signal by total number of channels. A calibration coefficient is obtained by using that the transfer function of each channel is estimated by analyzing the signal injected from the array receiver or transmitter. Finally, an interference signal is eliminated, by multiplying the received signal of a baseband and the calibration coefficient together.

Abstract translation: 本发明利用校准信号权向量作为与天线的预定方向角对应的响应向量，从而减少了干扰信号并有效地增强了数据通信。 阵列天线的校准方法从产生校准信号开始，以便测量阵列接收装置的传递函数。 在将划分的校准信号与对应于每个信道的预定权重矢量相乘之后，校准信号矢量被注入到阵列接收器/发射器中。 划分的校准信号是通过将校准信号除以总信道数获得的。 通过使用通过分析从阵列接收器或发射器注入的信号来估计每个通道的传递函数来获得校准系数。 最后，通过将基带的接收信号与校准系数相乘，消除干扰信号。

公开(公告)号：KR100435790B1

公开(公告)日：2004-06-10

申请号：KR1020010054710

申请日：2001-09-06

Applicant: 한국전자통신연구원

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

IPC: H04B7/216

Abstract: PURPOSE: An adaptive code bank managing method for allocating code channels in a mobile communication system and an apparatus therefor are provided to calculate the maximum number of allocable code channels according to wireless channel environments, and to adaptively vary the code bank by the size of communication traffic, so as to improve efficiency in communication channel use. CONSTITUTION: If a request for using code channels is generated, a channel number adjustor of a code bank management unit calculates the number of necessary code channels(S100,S110). The channel number adjustor calculates a link gain between a mobile station and a base station, on the basis of power amount allocated to all currently used code channels, total noise and interference amount, and SIR(Signal-to-Interference Rate)(S120,S130). The channel number adjustor calculates the number of additionally allocable code channels(S140). The channel number adjustor calculates the size of a code bank(S150). A channel allocator compares the number of necessary codes with the number of available channel codes(S160). If the number of necessary codes is larger, the channel allocator declares the failure of code channel allocation(S170). And if the number of necessary codes is smaller, the channel allocator allocates code channels(S180).

Abstract translation: 目的：提供一种用于在移动通信系统中分配代码信道的自适应代码组管理方法及其装置，用于根据无线信道环境计算可分配代码信道的最大数量，并且通过通信的大小自适应地改变代码组 流量，从而提高沟通渠道使用效率。 构成：如果产生使用代码信道的请求，则代码库管理单元的信道号码调整器计算必要代码信道的数量（S100，S110）。 信道号调整器根据分配给所有当前使用的码信道的功率量，总噪声和干扰量以及SIR（信号干扰比）来计算移动台和基站之间的链路增益（S120， S130）。 频道号码调整器计算可额外分配的代码频道的数量（S140）。 频道号码调整器计算码组的大小（S150）。 信道分配器将必要的码数与可用信道码的数量进行比较（S160）。 如果所需代码的数量较大，则信道分配器声明代码信道分配失败（S170）。 并且如果所需代码的数量较少，则信道分配器分配代码信道（S180）。

公开(公告)号：KR100428709B1

公开(公告)日：2004-04-27

申请号：KR1020010049444

申请日：2001-08-17

Applicant: 한국전자통신연구원

Inventor： 박형근 ,  오현서 ,  경문건

IPC: H04B7/04

CPC classification number: H04B7/0408 ,  G01S3/30 ,  H04B7/0617

Abstract: Disclosed are an apparatus for forward beamforming using a terminal feedback and a method thereof. The base station estimates an angle of arrival (AOA) range of a user signal from reverse link received data and calculates a plurality of beamforming weights steering the estimated AOA range. Then, the base station transmits a user pilot signal by sequentially using the plurality of beamforming weights at different time areas through a control channel to estimate a forward channel conditions. A terminal calculates the user pilot signal power for all fingers at the respective time areas and feeds a time area number corresponding to the greatest power back to the base station. The base station transmits a data channel signal using a beamforming weight corresponding to the time area number fed back from the terminal.

Abstract translation: 公开了一种使用终端反馈的前向波束形成装置及其方法。 基站估计来自反向链路接收数据的用户信号的到达角（AOA）范围，并计算指导估计的AOA范围的多个波束成形权重。 然后，基站通过控制信道在不同时间区域依次使用多个波束形成权重来发送用户导频信号，以估计前向信道条件。 终端计算各个时间区域内所有手指的用户导频信号功率，并将与最大功率对应的时间区域号码反馈给基站。 基站使用与从终端反馈的时间区域号码相对应的波束形成权重来发送数据信道信号。

公开(公告)号：KR100411882B1

公开(公告)日：2003-12-24

申请号：KR1020010047762

申请日：2001-08-08

Applicant: 한국전자통신연구원

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

IPC: H03M13/00

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设备及其方法，用于当在移动通信系统中通过信道发送流时，有效地解码由卷积码编码的符号流。 构成：CPU（202）控制全部解码操作。 最佳路径确定缓冲器（210）顺序存储光路。 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佳路径确定缓冲器（210）和竞争路径确定缓冲器（210）。 编码器（214）通过设置的位数对来自最佳路径确定缓冲器（210）和竞争路径确定缓冲器（210）的信号进行编码。 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：KR100391293B1

公开(公告)日：2003-07-12

申请号：KR1020010051365

申请日：2001-08-24

Applicant: 한국전자통신연구원

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

IPC: H04B1/7107

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：提供一种用于TDD-CDMA（时分双工码分多址）系统的多用户干扰消除接收机和一种用于控制干扰消除的方法，以便即使当信号功率值 在用户中很宽，以便最小化检测具有低信号功率值的用户信号时的错误。 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，并且输出延迟的信号。 干扰消除选择部分（300）从接收到的原始信号中提取中置码信号信道，以选择并输出第一干扰消除的对象的用户。 第一级干扰消除块（400）接收来自数据提取器（100）的接收信号的数据，以对第一干扰消除主体的所选用户执行第一并行干扰消除，并输出再现信号。 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来执行第二并行干扰消除 取消块（400）。

公开(公告)号：KR100383669B1

公开(公告)日：2003-05-14

申请号：KR1020000059981

申请日：2000-10-12

Applicant: 한국전자통신연구원

Inventor： 박형근 ,  경문건 ,  오현서 ,  장경희

IPC: H04B7/155

CPC classification number: H04B1/7075 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q3/267 ,  H04B7/0842

Abstract: This invention relates to a method and apparatus for increasing the performance of searcher by using the array antenna when the signal to interference plus noise ratio is low. The two-dimensional searcher performs the spatial-filtering to reduce the noise and interference components and then correlates the spatial-filtered signal with a pseudo noise (PN) code to thereby detect the incoming signals and acquire the corresponding code timings. Furthermore, the two-dimensional searcher can be used to increase the performance of a finger beamformer in two ways. One is to use searcher beamforming weight as initial finger beamforming weight to increase the convergence speed in the adaptive beamforming algorithms. The other is to reduce an amount of computation in the angle of arrival estimation algorithms by calculating the azimuth power spectrum only for the specific angle range.

Abstract translation: 本发明涉及一种当信号与干扰加噪声比低时通过使用阵列天线来提高搜索器性能的方法和装置。 二维搜索器执行空间滤波以减少噪声和干扰分量，然后将空间滤波信号与伪噪声（PN）码相关，从而检测输入信号并获取相应的码定时。 此外，二维搜索器可以用于以两种方式增加手指波束形成器的性能。 一种是使用搜索器波束赋形权重作为初始手指波束形成权重来增加自适应波束形成算法中的收敛速度。 另一种是通过仅针对特定角度范围计算方位角功率谱来减少到达角估计算法中的计算量。