公开(公告)号：KR1020100116099A

公开(公告)日：2010-10-29

申请号：KR1020090056588

申请日：2009-06-24

Applicant: 한국전자통신연구원

Inventor： 예충일 ,  곽병재 ,  권동승 ,  안동현

IPC: H04B7/26 ,  H04L7/04 ,  H04L27/26 ,  H04W56/00

CPC classification number: H04L7/033 ,  H04L67/1095 ,  H04W56/001 ,  H04W56/0025 ,  H04W84/18

Abstract: PURPOSE: A method and an apparatus for obtaining synchronization between nodes, and a method for organizing multiple physical channels are provided to use physical channels as a common resource, thereby realizing collision avoidance and a collision solution algorithm with improved performance. CONSTITUTION: If power is applied to a type-2 node, a pulse generation unit(420) outputs a pulse at an output time of an initially effective peak waveform at each predetermined cycle in case of output of a preamble detection unit(410). A generated pulse row(403) and a self-running clock are provided as input of a PLL(Phase Locked Loop)(430). The PLL generates stable preamble transmission time. If output of the PLL is stabilized in the type-2 node, the type-2 node starts preamble transmission.

Abstract translation: 目的：提供一种用于获得节点之间同步的方法和装置，并且提供了一种用于组织多个物理信道的方法，以使用物理信道作为公共资源，从而实现了避免冲突和提高性能的冲突解决算法。 构成：如果向2型节点施加电力，则在前导码检测单元（410）的输出的情况下，脉冲产生单元（420）在每个预定周期的输出时间输出初始有效峰值波形的输出时间。 提供产生的脉冲行（403）和自行进时钟作为PLL（锁相环）（430）的输入。 PLL产生稳定的前导码传输时间。 如果PLL的输出在类型2节点中稳定，则类型2节点开始前导码传输。

公开(公告)号：KR1020100076886A

公开(公告)日：2010-07-06

申请号：KR1020090128402

申请日：2009-12-21

Applicant: 한국전자통신연구원

Inventor： 권동승 ,  송홍엽 ,  남미영

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1105 ,  H03M13/3761 ,  H04L1/0052

Abstract: PURPOSE: A channel encoding method and a channel decoder thereof are provided to maximize transmission efficiency by reducing the overhead of a channel. CONSTITUTION: A random sequence generator(110) generates the sequence of random numbers which satisfies a uniform distribution. The random sequence generator generates a pseudo random number sequence by mixing the output of a counter(11) and the output of a random number generator(12). An encoded matrix generator(120) generates an encoded matrix by using a random sequence which is generated in the random sequence generator. A row or a column of an error correcting matrix is composed of one among a parity code, a Reed-Solomon code, and a tornado code. A transmission symbol generator(130) generates a transmission symbol by multiplying an input symbol which is generated in the encoded matrix and an input signal generator(140).

Abstract translation: 目的：提供信道编码方法及其信道解码器，以通过减少信道的开销来最大化传输效率。 构成：随机序列发生器（110）产生满足均匀分布的随机数序列。 随机序列发生器通过混合计数器（11）的输出和随机数发生器（12）的输出来产生伪随机数序列。 编码矩阵生成器（120）通过使用在随机序列生成器中生成的随机序列来生成编码矩阵。 纠错矩阵的行或列由奇偶校验码，里德 - 所罗门码和龙卷风码中的一个组成。 传输符号发生器（130）通过将编码矩阵中生成的输入符号与输入信号发生器（140）相乘来产生传输符号。

公开(公告)号：KR1020100067596A

公开(公告)日：2010-06-21

申请号：KR1020090068943

申请日：2009-07-28

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 예충일 ,  송영석 ,  서민식 ,  권동승 ,  김준두 ,  이충용 ,  강지원

IPC: H04B7/04

CPC classification number: H04B7/0632 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0417 ,  H04B7/0482

Abstract: PURPOSE: A strip code method and an apparatus thereof are provided to adjust complexity of a system and error performance by uniting BTHP(Block Tomlinson-Harashima Precoder) and VP(Vector Perturbation) technique in a MIMO(Multi-Input Multi-Output). CONSTITUTION: A strip code method includes the following steps: receiving feedback information from a plurality of terminals(S101); presuming channels between transmitting ends and terminals with the feedback information(S102); producing a plurality of transmission symbols with a first and a second non-linear precoding schemes in the presumed channel and the symbols to be transmitted to the terminal; and removing interference between sub-channels in the terminal.

Abstract translation: 目的：提供一种条形码方法及其装置，用于通过将MIMO（多输入多输出）中的BTHP（块Tomlinson-Harashima预编码器）和VP（矢量扰动）技术结合在一起来调整系统的复杂性和错误性能。 构成：条形码方法包括以下步骤：从多个终端接收反馈信息（S101）; 使用所述反馈信息来假定发送端和终端之间的信道（S102）; 在假设信道中产生具有第一和第二非线性预编码方案的多个传输符号，以及要发送到终端的符号; 并消除终端中的子信道之间的干扰。

公开(公告)号：KR1020100061102A

公开(公告)日：2010-06-07

申请号：KR1020080119993

申请日：2008-11-28

Applicant: 한국과학기술원 ,  한국전자통신연구원

Inventor： 윤수하 ,  정병훈 ,  김성환 ,  백선엽 ,  성단근 ,  권동승

IPC: H04B7/14 ,  H04B7/26 ,  H04L12/28

CPC classification number: H04W72/1205 ,  H04W88/08

Abstract: PURPOSE: A method for allocating resources between communication links, and a relay and terminal devices for the same are provided to enable efficient communication through an optimized resource distribution of at least two P2P links while using a limited channel and one relay. CONSTITUTION: It is detected whether or not the use of a relay is requested from a first link(S110). When at least some use of resource is stopped at the first link, the relay is used in the first link(S120). The some resources which are not used in the first link are used in the second link(S130). The resource is selected from a group comprising a bandwidth, channel and queue length. The link is a P2P(Peer-to-Peer) communication link.

Abstract translation: 目的：提供一种用于在通信链路之间分配资源的方法，以及用于其的中继站和终端设备，以便在使用有限信道和一个中继站时通过至少两个P2P链路的优化资源分配进行有效的通信。 构成：检测是否从第一链路请求了继电器的使用（S110）。 当在第一链路停止资源的至少一些使用时，在第一链路中使用中继（S120）。 在第二链路中使用在第一链路中未使用的一些资源（S130）。 从包括带宽，信道和队列长度的组中选择资源。 该链接是一个P2P（对等）通信链路。

公开(公告)号：KR100959645B1

公开(公告)日：2010-05-26

申请号：KR1020070130387

申请日：2007-12-13

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 예충일 ,  최인경 ,  송영석 ,  이승준 ,  곽병재 ,  김지형 ,  권동승 ,  김준두 ,  강지원 ,  이충용

IPC: H04L1/06 ,  H04B7/26

CPC classification number: H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426

Abstract: 본 발명은 본 발명은 다중사용자 다중입출력 채널에서 송수신 방법으로, 채널 행렬의 허미션 전치 행렬을 QR 분해하여 제1 행렬과 삼각 행렬인 제2 행렬을 구하고, 상기 제1 행렬을 이용하여 전처리 행렬을 구하고, 상기 전처리 행렬을 블록 삼각화 기법으로 이용하여 유효 채널을 형성한다.
삼각화 기법, ML 수신기, 유효 채널, BTHP

公开(公告)号：KR1020100026978A

公开(公告)日：2010-03-10

申请号：KR1020090071799

申请日：2009-08-04

Applicant: 한국전자통신연구원 ,  고려대학교 산학협력단

Inventor： 권동승 ,  곽병재 ,  예충일 ,  송영석 ,  김지형 ,  신우람 ,  강충구 ,  김진우

IPC: H04B7/26 ,  H04B7/04 ,  H04L1/18 ,  H04B7/005

CPC classification number: H04L1/1812 ,  H04B7/0639 ,  H04B7/0652 ,  H04L1/06 ,  H04B7/0482

Abstract: PURPOSE: A device for generating a codebook, a method for generating a codebook and a method for transmitting data are provided to select an optimal pre-processing matrix, thereby obtaining transmission efficiency. CONSTITUTION: A frequency determining unit(110) decides a frequency which makes a transmission codebook to have an optimal feature. A pre-processing matrix generating unit(120) generates a pre-processing matrix based on the frequency. A codebook generating unit(140) generates a retransmission codebook used in retransmission based on the pre-processing matrix. The codebook generating unit generates the transmission codebook based on the retransmission codebook. When the minimum distance of the transmission codebook becomes maximum, the transmission codebook has the optimal feature.

Abstract translation: 目的：提供一种用于生成码本的装置，生成码本的方法和发送数据的方法，以选择最佳的预处理矩阵，从而获得传输效率。 构成：频率确定单元（110）决定使发送码本具有最佳特征的频率。 预处理矩阵生成单元（120）基于该频率生成预处理矩阵。 码本生成单元（140）基于预处理矩阵生成在重发中使用的重传码本。 码本生成单元基于重发码本生成发送码本。 当传输码本的最小距离变得最大时，传输码本具有最佳特征。

公开(公告)号：KR1020100024891A

公开(公告)日：2010-03-08

申请号：KR1020090063703

申请日：2009-07-13

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 예충일 ,  권동승 ,  김지형 ,  데이비드그베르트

IPC: H04B7/06 ,  H04B7/005

CPC classification number: H04B7/0617 ,  H04B7/0626 ,  H04B7/0641 ,  H04B7/065

Abstract: PURPOSE: A method and a transmitter for modifying a beam-forming vector iteratively are provided to update a beam-forming vector by using feedback information. CONSTITUTION: A feedback receiving module(151) receives feedback information from a receiver, and a vector determining module(141) combines a first vector for first beam-forming with a second vector for second beam-forming. The vector determination module determines a beam-foaming vector. The vector determination module updates the combination ratio of the first and second vectors based on the received feedback information for the next beam-forming.

Abstract translation: 目的：提供一种用于迭代修改波束形成向量的方法和发射机，以通过使用反馈信息来更新波束形成向量。 构成：反馈接收模块（151）从接收器接收反馈信息，矢量确定模块（141）将用于第一波束形成的第一矢量与用于第二波束成形的第二矢量组合。 矢量确定模块确定光束发泡矢量。 矢量确定模块基于接收到的用于下一个波束形成的反馈信息来更新第一和第二矢量的组合比。

公开(公告)号：KR1020100002152A

公开(公告)日：2010-01-06

申请号：KR1020090056119

申请日：2009-06-23

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 김지형 ,  신우람 ,  권동승 ,  김주협 ,  홍인기

IPC: H04B7/26 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04J11/005 ,  H04L5/0007 ,  H04L25/0202

Abstract: PURPOSE: A signal transmitting method and a signal receiving method are provided to estimate the channel of a cell to which a terminal belongs and the channel of a signal coming from a neighbor cell, thereby reducing the interference of the neighbor cell. CONSTITUTION: In order to be orthogonal to the pilot pattern of a first user terminal, a second user terminal changes its own pilot pattern(S522). A center BS(Base Station) receives a transmitting signal from the first user terminal in a nth frame(S524). The center BS estimates a channel with the first and second terminals(S528). A neighboring BS detects the transmitting signal of the second user terminal with a channel estimation value(S530). The center BS eliminates an interferential signal with the channel estimation value and transmitting signal of the second user terminal(S536).

Abstract translation: 目的：提供信号发送方法和信号接收方法，以估计终端所属的小区的信道和来自相邻小区的信号的信道，从而减少相邻小区的干扰。 构成：为了与第一用户终端的导频模式正交，第二用户终端改变其自己的导频模式（S522）。 中心BS（基站）在第n帧从第一用户终端接收发送信号（S524）。 中心BS估计具有第一和第二终端的信道（S528）。 相邻BS使用信道估计值来检测第二用户终端的发送信号（S530）。 中心BS消除了具有第二用户终端的信道估计值和发送信号的干扰信号（S536）。

公开(公告)号：KR100914316B1

公开(公告)日：2009-08-27

申请号：KR1020070097881

申请日：2007-09-28

Applicant: 한국전자통신연구원

Inventor： 곽병재 ,  송나옥 ,  권동승

IPC: H04L27/02 ,  H04L27/18 ,  H04L27/26

CPC classification number: H04L27/3494 ,  H04L27/3405

Abstract: 위상 오차에 의한 수신 성능의 저하를 최소화하는 이진 신호 변조 장치가 개시된다.
이진 신호 변조 장치는 이진 신호를 수신하고, 이진 신호를 소정의 매핑 관계에 따라 복소 심볼로 변환한다. 이때, 매핑 관계는 복소 평면 상의 복수의 포인트에서 각각 시작하고 궤적간 거리가 복수의 포인트 사이의 거리 중 최소 거리 이상이 되도록 형성되는 복수의 궤적에서, 매핑 심볼간 거리가 소정의 거리 이상이 되고 매핑 심볼간 위상이 소정의 각도 이상이 되도록 복수의 궤적의 각각에 복수의 매핑 심볼이 배치됨으로써 형성된다.
디지털 변조, QAM

公开(公告)号：KR1020090066198A

公开(公告)日：2009-06-23

申请号：KR1020080083476

申请日：2008-08-26

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 이승준 ,  권동승 ,  예충일

IPC: H04B7/08 ,  H04B7/04 ,  H04L1/02

CPC classification number: H04B7/0634 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0848

Abstract: A receiving device of a terminal using a code book, a transmission device and a reception method for coupling signals of a base station are provided to reduce quantization error while the number of received signals in consideration of the element of not only the channel state information. A channel state estimator(225) estimates a channel condition between a first and a second antenna on the signal received from the base station and obtains the channel state information. A codebook storing unit(223) stores the codebook including a coding word about the channel condition. A weight matrix generator(224) produces the weight matrix about the channel condition, the code book and channel state information. The weight matrix generating unit delivers the quantized feedback information about the weight matrix to the base station.

Abstract translation: 提供使用码本的终端的接收装置，用于耦合基站的信号的发送装置和接收方法，以减少量化误差，同时考虑到信道状态信息的要素，接收信号的数量。 信道状态估计器（225）估计从基站接收的信号上的第一和第二天线之间的信道状况，并获得信道状态信息。 码本存储单元（223）存储包括关于信道条件的编码字的码本。 加权矩阵生成器（224）产生关于信道条件，码本和信道状态信息的加权矩阵。 加权矩阵生成单元将关于权重矩阵的量化反馈信息传递给基站。