公开(公告)号：KR1020070061283A

公开(公告)日：2007-06-13

申请号：KR1020060083170

申请日：2006-08-30

Applicant: 한국전자통신연구원 ,  한양대학교 산학협력단

Inventor： 장대익 ,  오덕길 ,  현광민 ,  윤동원 ,  박상규

IPC: H04L27/38

CPC classification number: H04L25/067 ,  H04L1/005 ,  H04L27/38

Abstract: An apparatus and a method for generating a soft bit metric and a M-array QAM(Quadrature Amplitude Modulation) receiving system using the same are provided to lower designing complexity by using Max-Log-Map algorithm when converting a symbol signal into bit information. An apparatus for generating a soft bit metric includes an analog/digital signal converting unit(51), a scaling unit(52), a positive integer converting unit(53), a sign determination unit(54), and a bit information converting unit(55). The analog/digital signal conversion unit(51) converts an analog symbol signal of a demodulated I(Inphase)-channel or Q (Quadrature)-channel into a digital signal. The scaling unit(52) scales the converted digital signal based on an interval determination reference value between symbols. The positive integer converting unit(53) calculates a positive integer of the scaled digital I or Q-channel symbol signal. The sign determination unit(54) determines a sign of the scaled digital I or Q-channel symbol signal. The bit information converting unit(55) converts the scaled digital I or Q-channel symbol signal into each soft bit metric information classified by bits based on the calculated positive integer and the determined sign value.

Abstract translation: 提供了一种用于产生软比特量度的装置和方法以及使用其的M阵列QAM（正交幅度调制）接收系统，以便在将符号信号转换为比特信息时通过使用Max-Log-Map算法降低设计复杂度。 用于产生软比特度量的装置包括模拟/数字信号转换单元（51），缩放单元（52），正整数转换单元（53），符号确定单元（54）和比特信息转换单元 （55）。 模拟/数字信号转换单元（51）将解调的I（同相）信道或Q（正交）信道的模拟符号信号转换为数字信号。 缩放单元（52）基于符号之间的间隔确定参考值对经转换的数字信号进行缩放。 正整数转换单元（53）计算缩放的数字I或Q通道符号信号的正整数。 符号确定单元（54）确定缩放的数字I或Q通道符号信号的符号。 位信息转换单元（55）基于所计算的正整数和所确定的符号值，将缩放的数字I或Q信道符号信号转换为由比特分类的每个软比特度量信息。

公开(公告)号：KR100903876B1

公开(公告)日：2009-06-24

申请号：KR1020070131497

申请日：2007-12-14

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 유창완 ,  윤동원 ,  현광민 ,  이영하 ,  이훈 ,  최정필 ,  홍언영 ,  이예훈 ,  박윤옥

IPC: H04L27/22

Abstract: 본 발명은 비트 대칭 그레이 코드를 이용하여 위상 편이 방식으로 변조된 수신 심볼 신호를 비트 정보로 분할하는 방법 및 그 장치에 관한 것이다.
본 발명에 따르면, 2차원 동심원 상에 위상각의 간격을 두어 배치된 수신된 심볼 신호의 I 채널 및 Q 채널 심볼 신호의 값에 대한 각각의 절대값을 구한다. 각각의 절대값을 이용하여 구한 회전 각도를 이용하여 I 채널 또는 Q 채널 심볼 신호를 회전시킨다. 그리고 회전시킨 I 채널 및 Q 채널 심볼 신호 각각에 대한 비트 정보를 추출한다.
이와 같이, 좌표 회전 방식을 이용하여 BRGC의 특성을 고려하여 PSK 변조된 심볼의 비트 정보를 분할하므로 2차원 상에서 비트 정보의 분할을 간단하게 수행할 수 있다.
비트 대칭 그레이 코드(Bit Reflected Gray Code, BRGC), 위상 편이 방식(Phase Shift Keying, PSK), 펄스 진폭 변조(Pulse Amplitude Modulation, PAM), 좌표 회전(Coordinate rotation)

公开(公告)号：KR1020020051551A

公开(公告)日：2002-06-29

申请号：KR1020000080923

申请日：2000-12-22

Applicant: 한국전자통신연구원

Inventor： 이영환 ,  조평동 ,  윤동원

IPC: H04B1/7097 ,  H04B1/709

CPC classification number: H04B1/7097 ,  H04B1/709 ,  H04J13/0022

Abstract: PURPOSE: An apparatus for canceling the self-noise of a PN code and an apparatus for canceling an interference signal in a DS/CDMA system are provided to remove an interference signal generated in using a PN offset code as a spreading code by canceling the self-noise of a PN code and enhancing correlation characteristics ideally. CONSTITUTION: A receiver in a DS/CDMA system is comprised of a correlator, an integrator(24), an adder(25), and a scaler(26). The correlator consists of a multiplier(22) and an integrator(23). The integrator(24) integrates a received signal(r(t)). The adder(25) adds the output signal(y1(t)) of the integrator(23) of the correlator to the output signal(y2(t)) of the integrator(24). The scaler(26) normalizes the added signal. Accordingly, as -1/N among the correlation characteristics of a PN code becomes "0", an ideal correlation characteristic is obtained. When a PN offset code is used as a spreading code, an interference signal in a DS/CDMA system is completely cancelled.

Abstract translation: 目的：提供一种用于消除PN码的自噪声和用于消除DS / CDMA系统中的干扰信号的装置的装置，以通过取消自身来消除在使用PN偏移码时产生​​的干扰信号作为扩展码 - PN码的噪声和理想的增强相关特性。 构成：DS / CDMA系统中的接收机由相关器，积分器（24），加法器（25）和缩放器（26）组成。 相关器由乘法器（22）和积分器（23）组成。 积分器（24）对接收信号（r（t））进行积分。 加法器（25）将相关器的积分器（23）的输出信号（y1（t））与积分器（24）的输出信号（y2（t））相加。 缩放器（26）对附加的信号进行归一化。 因此，由于PN码的相关特性之中的-1 / N变为“0”，所以获得了理想的相关特性。 当使用PN偏移码作为扩展码时，DS / CDMA系统中的干扰信号被完全取消。

公开(公告)号：KR1020090065035A

公开(公告)日：2009-06-22

申请号：KR1020070132457

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 김도욱 ,  이응돈 ,  윤동원 ,  송윤정 ,  이수인

IPC: H04L27/02 ,  H04L27/18

CPC classification number: H04L27/38 ,  H04L2027/003 ,  H04L2027/0053 ,  H04L2027/0067

Abstract: A method of phase detection for broadcast wave synchronization in high order QAM and apparatus thereof are provided to stabilize the acquisition of frequency using a phase detector. A method for detecting phase for broadcast wave synchronization in high order QAM comprises: a step of converting a signal received to recovery loop of broadcast wave into compensation signal information; a step of determining standard judge symbol information from the compensation signal information; a step of computing weight from the compensation signal information; a step of calculating phase error information; and a step of outputting the weight phase error information.

Abstract translation: 提供了一种用于高阶QAM中的广播波同步的相位检测方法及其装置，以使用相位检测器稳定频率采集。 一种用于检测高阶QAM中的广播波同步的相位的方法，包括：将接收到的广播波的恢复循环的信号转换为补偿信号信息; 从补偿信号信息确定标准判断符号信息的步骤; 从补偿信号信息计算权重的步骤; 计算相位误差信息的步骤; 以及输出加权相位误差信息的步骤。

公开(公告)号：KR1020090061553A

公开(公告)日：2009-06-16

申请号：KR1020080050768

申请日：2008-05-30

Applicant: 한국전자통신연구원 ,  한양대학교 산학협력단

Inventor： 장대익 ,  김재현 ,  윤동원

IPC: H04L27/18

CPC classification number: H04L27/3405

Abstract: An apparatus and a method for mapping a bit of a digital modulation signal are provided to overcome a nonlinear channel characteristic generated in a transmitting and receiving amplifier by shifting and mapping information bits in an outer ring counterclockwise. Each bit is mapped on constellation with the shape of an outer ring and an inner ring(301). The bits in the outer ring are shifted counterclockwise one by one and the bits are finally mapped(302). In consideration of the constellation changed by the nonlinear characteristic, the bit is mapped so that the bit difference between the symbol of the inner ring and the symbol of the outer ring positioned in a diagonal line around the symbol of the inner ring is the predetermined bit difference.

Abstract translation: 提供一种用于映射数字调制信号的位的装置和方法，以克服在发射和接收放大器中产生的非线性信道特性，通过逆时针移位和映射外环中的信息位。 每个位映射到具有外环和内环（301）的形状的星座上。 外环中的位逐个逆时针移动，并最终映射位（302）。 考虑到由非线性特性改变的星座，该位被映射，使得内环的符号和位于内环的符号之间的对角线中的外环的符号之间的位差是预定位 区别。