公开(公告)号：KR1020090105303A

公开(公告)日：2009-10-07

申请号：KR1020080030676

申请日：2008-04-02

Applicant: 삼성전자주식회사 ,  한국과학기술원

Inventor： 김은용 ,  이주미 ,  전주환 ,  류탁기 ,  이상민 ,  김성수

IPC: H04B7/155 ,  H04L1/00 ,  H04L27/26

CPC classification number: H04B7/155 ,  H04L1/0045 ,  H04L1/0059 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2001/0097

Abstract: PURPOSE: A repeater device in a wireless communication system and a method thereof including a convolution decoder are provided to calculate the signal by adding the signal in a real domain from the other side of the transmitter. CONSTITUTION: A repeater device in a wireless communication system and a method thereof including a convolution decoder includes modulators(201, 211), coders(203, 213), and a transmission unit. The modulator modulates the carrier signal according to the modulation sequence. The coder encodes the modulation symbol offered as a convolution code from a modulator. The transmission unit transmits the signal offered from the coder to the repeater station.

Abstract translation: 目的：提供一种无线通信系统中的中继器装置及其包括卷积解码器的方法，用于通过将来自发射机另一侧的真实域中的信号相加来计算信号。 构成：无线通信系统中的中继器装置及其包括卷积解码器的方法，包括调制器（201,211），编码器（203,213）和发送单元。 调制器根据调制序列调制载波信号。 编码器对调制器作为卷积码提供的调制符号进行编码。 发送单元将从编码器提供的信号发送到中继站。

公开(公告)号：KR101527114B1

公开(公告)日：2015-06-08

申请号：KR1020080030668

申请日：2008-04-02

Applicant: 삼성전자주식회사 ,  한국과학기술원

Inventor： 김은용 ,  이주미 ,  고은석 ,  전주환 ,  김성수

IPC: H04B7/08 ,  H04B7/02

CPC classification number: H04L1/0009 ,  H03M13/29 ,  H03M13/2957 ,  H03M13/353 ,  H03M13/356 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0065 ,  H04L1/06 ,  H04L25/067 ,  H04L2025/03426

Abstract: 본발명은다중입출력(MIMO : Multiple Input Multiple Output) 무선통신시스템에서 LR(Lattice Reduction) 알고리즘기반의신호검출에관한것으로, 채널행렬및 격자변형행렬 T의곱의역행렬과곱해진수신신호블록에포함된심벌값들각각을소프트모듈로(soft modulo) 연산함으로써, 스트림별연판정값들을생성하는다수의연산기들과, 동일한복호화방식에따라상기스트림별연판정값들을복호화함으로써, 스트림별부호화방식에따른코드워드들의 LLR(Log Likelihood Ratio) 값들을생성하는다수의내부복호화기들과, 상기행렬 T를이용하여상기 LLR 값들로부터송신단에서생성된코드워드를나타내는 LLR 값들을복원하는패싱(passing)기와, 상기스트림별복호화방식에따라상기송신단에서생성된코드워드를나타내는 LLR 값들을스트림별로복호화함으로써, 스트림별송신비트열의 LLR 값들을생성하는다수의외부복호화기들을포함하여, 이중부호화및 이중복호화를통해스트림별서로다른부호화방식을지원하는 LR 알고리즘기반의검출을수행함으로써, 낮은복잡도만으로시스템성능을향상시킬수 있다.

公开(公告)号：KR100368794B1

公开(公告)日：2003-01-24

申请号：KR1020000079866

申请日：2000-12-21

Applicant: 한국과학기술원

Inventor： 송익호 ,  이주미

IPC: H04L27/26

Abstract: PURPOSE: An adaptive transmission method appropriate for a multicarrier DS CDMA(Direct Series Code Division Multiple Access) system is provided, which transmits much data for an equal time and provides a capability of correcting an error according to the kind of data and to a channel state by changing a code rate. CONSTITUTION: According to the adaptive transmission method, information bit of kth user is coded in a transmitter rate compatible punctured convolutional code(RCPS code) encoder(10) and its output(Sk(t)) is sent to a channel(20). A channel output(r(t)) is reverse spread in a receiver and is decoded in a receiver rate compatible convolutional code encoder(30). And a signal to noise ratio and a signal to interference ratio are estimated together with the decoding step. And several error correction code rate are determined to sent the estimated signal to noise ratio and signal to interference ratio to a transmitter and to maintain a proper service quality.

Abstract translation: 目的：提供一种适用于多载波DS CDMA（直接串行码分多址）系统的自适应传输方法，它可以在相同时间内传输大量数据，并提供根据数据类型和信道来纠正错误的能力 通过改变码率来改变状态。 组成：根据自适应传输方法，第k个用户的信息比特在发送器速率兼容的收缩卷积码（RCPS码）编码器（10）中被编码，并且其输出（Sk（t））被发送到信道（20）。 信道输出（r（t））在接收机中反向扩展，并在接收机速率兼容卷积码编码器（30）中解码。 并且与解码步骤一起估计信噪比和信干比。 并且确定几个纠错码率以将估计的信噪比和信号干扰比发送到发射机并保持适当的服务质量。

公开(公告)号：KR101450756B1

公开(公告)日：2014-10-15

申请号：KR1020080030676

申请日：2008-04-02

Applicant: 삼성전자주식회사 ,  한국과학기술원

Inventor： 김은용 ,  이주미 ,  전주환 ,  류탁기 ,  이상민 ,  김성수

IPC: H04B7/155 ,  H04L1/00 ,  H04L27/26

CPC classification number: H04B7/155 ,  H04L1/0045 ,  H04L1/0059 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2001/0097

Abstract: 본 발명은 무선통신시스템에서 중계 서비스를 제공하기 위한 장치 및 방법에 관한 것으로서, 변조 차수에 따라 전송 신호를 변조하는 변조기와, 링도메인(Ring Domain)의 콘볼루션 부호(Convolutin code)로 상기 변조기로부터 제공받은 변조 심볼을 부호화하는 부호기와, 상기 부호기로부터 제공받은 신호를 중계국으로 전송하는 송신부를 포함하여 중계국은 서로 다른 송신 단으로부터 제공받은 신호들이 실제 영역(Real Domain)에서 더해진 신호를 검출하고, 상기 검출한 신호를 중계하여 시간 자원의 추가 없이 중계 서비스를 제공할 수 있는 이점이 있다.
중계 방식, 링 도메인(Ring domain), 변조 차수(Modulation order), 변조 및 부호화 기법

公开(公告)号：KR1020090105296A

公开(公告)日：2009-10-07

申请号：KR1020080030668

申请日：2008-04-02

Applicant: 삼성전자주식회사 ,  한국과학기술원

Inventor： 김은용 ,  이주미 ,  고은석 ,  전주환 ,  김성수

IPC: H04B7/08 ,  H04B7/02

CPC classification number: H04L1/0009 ,  H03M13/29 ,  H03M13/2957 ,  H03M13/353 ,  H03M13/356 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0065 ,  H04L1/06 ,  H04L25/067 ,  H04L2025/03426

Abstract: PURPOSE: A signal detection device based on lattice reduction and a method thereof for supporting a different decoding method by each stream are provided to increase the performance of the system with low complexity. CONSTITUTION: A signal detection device based on lattice reduction and a method thereof for supporting a different decoding method by each stream include a plurality of operators, a plurality of encoders(208-1~208-N) and a passing unit. A plurality of operators computes the symbol value by a soft module. The operator generates stream soft decision values. The inner decoder decodes stream soft decision values according to the decoding method. The inner decoder generates the LLR values of the coding words according to the stream coded system.

Abstract translation: 目的：提供一种基于晶格简化的信号检测装置及其用于支持每个流的不同解码方法的方法，以便以较低的复杂度提高系统的性能。 构成：基于晶格简化的信号检测装置及其用于支持每个流的不同解码方法的方法包括多个运算符，多个编码器（208-1〜208-N）和通过单元。 多个运算符通过软模块计算符号值。 运算符产生流软判决值。 内部解码器根据解码方法解码流软判决值。 内部解码器根据流编码系统生成编码字的LLR值。

公开(公告)号：KR100810521B1

公开(公告)日：2008-03-07

申请号：KR1020060099577

申请日：2006-10-13

Applicant: 한국과학기술원

Inventor： 송익호 ,  이주미

IPC: H03D3/00 ,  H03D3/02

Abstract: A local optimum detector in a first-order Markov noise environment is provided to acquire a local optimum detector TL00 by first-order-differentiating a combination probable density function of an observation vector when at least one of an average of a multiplying type noise is not 0. A local optimum detector in a first-order Markov noise environment detects a predetermined signal{ei} in a first-order Markov noise environment. A detection static quantity of the local optimum detector is represented as an equation 7 as below. TL00 (x)=SigmaalphaigA,i(xi-1,xi,xi+1) equation 7. alphai=eiE{Mi}, and gA,i(x,y,z)= ¾·yQi,i+1(y,zx,y)=g10,i(yx)+g01,i(zy), where i=1,2,...,n, denote local optimum non-linearity which defines a frame of the local optimum detector. ¾·a=-∂/∂a denotes a partial differentiation for a variable a. When p,q=0,1,2, Qi,j(x,yz,w)=ln{fi(xz)fj(yw), gpq,i(xy)= ¾·pa¾·qyfi(xy), where i=1,2,.., n, and gpq,i(xy)=0, where in+1, x0=xn+1=0 and e0=en+1=0.

Abstract translation: 提供一阶马尔可夫噪声环境中的局部最佳检测器，以当乘法型噪声的平均值中的至少一个不是时，对观测向量的组合可能密度函数进行一阶微分，来获取局部最优检测器TL00 一阶马尔可夫噪声环境中的局部最优检测器检测一阶马尔可夫噪声环境中的预定信号{ei}。 局部最佳检测器的检测静态量如下式7所示。 TL00（x）= SigmaalphaigA，i（xi-1，xi，xi + 1）方程7. alphai = eiE {Mi}，gA，i（x，y，z）=¾·yQi，i + 1 ，zx，y）= g10，i（yx）+ g01，i（zy），其中i = 1,2，...，n表示定义局部最优检测器的帧的局部最优非线性。 表示变量a的偏微分。 当p，q = 0,1,2时，Qi，j（x，yz，w）= ln {fi（xz）fj（yw），gpq，i（xy）=¾·pa¾·qyfi（xy） i = 1,2，...，n和gpq，i（xy）= 0，其中in + 1，x0 = xn + 1 = 0，e0 = en + 1 = 0。

公开(公告)号：KR1020020050667A

公开(公告)日：2002-06-27

申请号：KR1020000079866

申请日：2000-12-21

Applicant: 한국과학기술원

Inventor： 송익호 ,  이주미

IPC: H04L27/26

Abstract: PURPOSE: An adaptive transmission method appropriate for a multicarrier DS CDMA(Direct Series Code Division Multiple Access) system is provided, which transmits much data for an equal time and provides a capability of correcting an error according to the kind of data and to a channel state by changing a code rate. CONSTITUTION: According to the adaptive transmission method, information bit of kth user is coded in a transmitter rate compatible punctured convolutional code(RCPS code) encoder(10) and its output(Sk(t)) is sent to a channel(20). A channel output(r(t)) is reverse spread in a receiver and is decoded in a receiver rate compatible convolutional code encoder(30). And a signal to noise ratio and a signal to interference ratio are estimated together with the decoding step. And several error correction code rate are determined to sent the estimated signal to noise ratio and signal to interference ratio to a transmitter and to maintain a proper service quality.

Abstract translation: 目的：提供一种适用于多载波DS CDMA（直接码分多址）系统的自适应传输方法，该系统在相同时间内传输大量数据，并提供根据数据种类和频道修正错误的能力 状态通过改变代码率。 构成：根据自适应传输方法，第k个用户的信息位被编码在发送速率兼容的穿孔卷积码（RCPS码）编码器（10）中，并且其输出（Sk（t））被发送到信道（20）。 信道输出（r（t））在接收机中反向扩展，并在接收机速率兼容卷积码编码器（30）中进行解码。 并且与解码步骤一起估计信噪比和信号与干扰比。 并且确定几个纠错码率以将估计的信噪比和信号与干扰比发送到发射机并维持适当的服务质量。