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公开(公告)号：KR1020170133787A
公开(公告)日：2017-12-06
申请号：KR1020160065003
申请日：2016-05-26
Applicant: 한국전자통신연구원
Abstract: 본발명은 3으로나누는이진연산방법으로, 입력된피제수(y)를모듈러 3 연산하여나머지(r)를산출하는단계와, 상기피제수(y)에서상기산출된나머지(r)를감하여제수 3으로나누어지는값(y')을산출하는단계와, 상기피제수(y)의비트수(n)를고려하여, 3을곱했을때의꼴이되는값(b)를검색하는단계와, 상기값(y')에상기값(b)를곱한값을모듈러연산하여상기피제수(y)를 3으로나눈몫(x)을산출하는단계를포함한다.
Abstract translation: 本发明涉及一种二进制运算方法，用于将输入的被除数y除以模3运算以计算余数r，以及从被除数y中将计算出的余数r减去除数3的步骤 （B），其是考虑到被除数y的位数（n）而乘以3的结果;计算值y '）通过将值（b）乘以值（b）来计算被除数（y）除以3的商（x）。
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公开(公告)号：KR1020150086794A
公开(公告)日：2015-07-29
申请号：KR1020140006861
申请日：2014-01-20
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2627 , H04L1/1812 , H04L1/1845 , H04L27/2647 , H04W74/0825
Abstract: 본발명은경쟁기반접속(contention based access) 시스템에서직교주파수분할다중(orthogonal frequency division multiplexing: OFDM) 변조방식을사용할때, 소프트컴바이닝에기반한효율적이고신뢰성있는재전송방법및 장치에관한것으로, 송신노드로부터데이터신호를수신하는단계, 기수신된상기데이터신호의유효구간부분과상기현재수신된데이터신호를소프트컴바이닝하는단계, 상기현재수신된데이터신호의충돌(collision) 구간을판단하는단계, 상기현재수신된데이터신호의상기충돌구간을제외한유효구간부분을버퍼에저장하는단계를포함함을특징으로한다. 본발명에따르면, OFDM 변조방식을사용하는경쟁기반접속시스템에서, 전송충돌에의한데이터신호수신실패가발생한경우수신된데이터신호의유효한부분을검출하여효율적으로소프트컴바이닝에활용할수 있고, 데이터신호의수신확률을높일수 있다.
Abstract translation: 本发明涉及一种基于在基于争用的接入系统中使用正交频分复用（OFDM）的软组合的有效和可靠的重传的方法和装置。 本发明包括以下步骤：从传输节点接收数据信号; 将当前接收到的数据信号与预先接收的数据信号的有效期组合; 确定当前接收的数据信号的冲突周期; 并且将当前接收到的数据信号的冲突周期除外的有效期间存储在缓冲器中。 根据本发明，在使用OFDM的基于竞争的接入中，在由于传输冲突而发生数据接收失败的情况下，本发明可以检测接收到的数据信号的有效部分，并将有效部分有效地用于软 组合并且还可以增加数据信号的接收可能性。
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公开(公告)号：KR1020100069912A
公开(公告)日：2010-06-25
申请号：KR1020080128465
申请日：2008-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2675 , H04L25/0224
Abstract: PURPOSE: A timing offset estimating method and a device thereof are provided to estimate a timing offset by using predetermined target samples. CONSTITUTION: A pilot symbol extractor(210) extracts a pilot symbol from the OFDM(Orthogonal Frequency Division Multiplexing) symbol. An impulse response calculator(220) calculates the impulse response in the time domain by using the pilot symbol. A noise dispersion estimator(230) estimates the dispersion of the noises by using the OFDM symbol and the pilot symbol. A timing offset estimator(240) estimates the timing offset by using the dispersion of the noises and the impulse response.
Abstract translation: 目的：提供定时偏移估计方法及其装置，以通过使用预定的目标样本来估计定时偏移。 构成：导频符号提取器（210）从OFDM（正交频分复用）符号中提取导频符号。 脉冲响应计算器（220）通过使用导频符号来计算时域中的脉冲响应。 噪声色散估计器（230）通过使用OFDM符号和导频符号来估计噪声的色散。 定时偏移估计器（240）通过使用噪声的色散和脉冲响应来估计定时偏移。
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公开(公告)号：KR1020100069911A
公开(公告)日：2010-06-25
申请号：KR1020080128464
申请日：2008-12-17
Applicant: 한국전자통신연구원
IPC: H04L27/144 , H04J11/00
CPC classification number: H04L27/2675 , H04L25/0224
Abstract: PURPOSE: A residual frequency offset estimating method and a device thereof are provided to estimate a residual frequency offset by using target samples which are extracted based on the power of time samples of impulse response in the time domain. CONSTITUTION: A pilot symbol extractor(210) extracts a pilot symbol from an OFDM(Orthogonal Frequency Division Multiplexing) symbol. An impulse response calculator(230) calculates the impulse response in the time domain by using the pilot symbol. A noise dispersion estimator(220) estimates the dispersion of noises by using the OFDM symbol and the pilot symbol. A residual frequency offset estimator(240) estimates the residual frequency offset by using the dispersion of the noises and the impulse response.
Abstract translation: 目的：提供一种残余频率偏移估计方法及其装置，用于通过使用基于时域中的脉冲响应的时间样本的功率提取的目标样本来估计残余频率偏移。 构成：导频符号提取器（210）从OFDM（正交频分复用）符号中提取导频符号。 脉冲响应计算器（230）通过使用导频符号来计算时域中的脉冲响应。 噪声色散估计器（220）通过使用OFDM符号和导频符号来估计噪声的色散。 残余频率偏移估计器（240）通过使用噪声的色散和脉冲响应来估计残余频率偏移。
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公开(公告)号：KR100876560B1
公开(公告)日：2008-12-31
申请号：KR1020070044652
申请日：2007-05-08
Applicant: 한국전자통신연구원
Abstract: A QAM symbol demapping method for downstream transmission of a cable and a QAM symbol demapping apparatus thereof are provided to perform QAM symbol demapping for a 64 QAM mode and a 256 QAM mode and to restore a bit signal without using a memory in downstream transmission. A QAM symbol demapping method for downstream transmission of a cable comprises the following steps of: demodulating a converted symbol and dividing the demodulated symbol into a code bit of I and Q symbols corresponding to amplitude information and an absolute value of the I and Q symbols corresponding to bit information; extracting the amplitude information by changing positions of I and Q in the absolute value of the I and Q symbols; extracting set partitioning information by using an LSB(Least Significant Bit) of the I and Q symbols for the extracted amplitude information and the code bit of the I and Q symbols.
Abstract translation: 提供用于电缆的下行传输的QAM符号解映射方法及其QAM符号解映射设备，以对64 QAM模式和256 QAM模式执行QAM符号解映射，并且在下游传输中不使用存储器的情况下恢复比特信号。 一种用于电缆下行传输的QAM符号解映射方法，包括以下步骤：对经转换的符号进行解调，并将经解调的符号划分为对应于幅度信息的I和Q符号的码位，并且对应于I和Q符号的绝对值 比特信息; 通过改变I和Q符号的绝对值中的I和Q的位置来提取振幅信息; 通过使用I和Q符号的LSB（最低有效位）来提取集合分割信息，用于提取的幅度信息和I和Q符号的码位。
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Patent Agency Ranking
公开(公告)号：KR100816428B1
公开(公告)日：2008-03-25
申请号：KR1020070035521
申请日：2007-04-11
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3881
Abstract: A symbol slicing method and a symbol slicing apparatus of a scalable QAM(quadrature amplitude modulation) type are provided to maintain low hardware complexity regardless of the increment of a QAM modulation order by a logic operation using a least significant bit and an overall integral part of a sampling signal for in-phase and quadrature phase axes to be sampled as a digital value. A symbol slicing method in a digital demodulator having a QAM(quadrature amplitude modulation) type comprises the steps of: obtaining a digital integer value by sampling a symbol signal on an in-phase axis or a quadrature phase axis, respectively(S410,S420); and extracting a symbol bit stream on the in-phase axis or the quadrature phase axis using an entire bit stream and a least significant bit value of the digital integer value(S450). The step of extracting the symbol bit stream is characterized by setting the least significant bit value among the entire bit stream as '1'(S430).
Abstract translation: 提供了可扩展QAM（正交幅度调制）类型的符号分片方法和符号分片装置，以便通过使用最低有效位和总体整体部分的逻辑运算来保持较低的硬件复杂度，而不管QAM调制阶数的增加如何 用于同相和正交相位轴的采样信号作为数字值进行采样。 具有QAM（正交幅度调制）类型的数字解调器中的符号分片方法包括以下步骤：通过分别在同相轴或正交相位轴上采样符号信号来获得数字整数值（S410，S420） ; 以及使用数字整数值的整个比特流和最低有效位值在同相轴或正交相位轴上提取符号比特流（S450）。 提取符号位流的步骤的特征在于将整个比特流中的最低有效位值设置为'1'（S430）。
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7.发明公开디지털 수신기의 복조 알고리즘 성능 측정을 위해 타이밍위상 에러의 분해능을 증가시키기 위한 타이밍 위상 에러생성 방법 失效时序相位误差创建方法，用于改善时序相位误差的分辨力，用于测量数字接收机的性能
公开(公告)号：KR1020070057650A
公开(公告)日：2007-06-07
申请号：KR1020060091425
申请日：2006-09-20
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2334 , H04L27/183
Abstract: A timing phase error creation method for improving resolving power of a timing phase error for measuring a performance of a digital receiver is provided to enhance a speed of measuring performance of demodulation algorithm of the digital receiver by reducing a memory and a calculation quantity for measuring the performance. A timing phase error creation method for improving resolving power of a timing phase error for measuring a performance of a digital receiver includes a matching filter and a memory. An arbitrary time delay element is applied to the matching filter for creating the timing phase error as much as t time. The timing phase error is created by calculating a constant of the matching filter delayed as much as t by moving an input signal as much as t. The constant of the matching filter is changed according to the timing phase error by using the memory.
Abstract translation: 提供一种用于提高用于测量数字接收机的性能的定时相位误差的分辨率的定时相位误差创建方法，以通过减少存储器和用于测量数字接收机的计算量来提高数字接收机的解调算法的性能的测量速度 性能。 用于改善用于测量数字接收机的性能的定时相位误差的分辨率的定时相位误差产生方法包括匹配滤波器和存储器。 任意的时间延迟元件被应用于匹配滤波器，用于在t时间上产生定时相位误差。 定时相位误差是通过计算通过将输入信号移至t的方式延迟多达t的匹配滤波器的常数而产生的。 通过使用存储器，根据定时相位误差来改变匹配滤波器的常数。
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公开(公告)号：KR100561631B1
公开(公告)日：2006-03-20
申请号：KR1020030097947
申请日：2003-12-26
Applicant: 한국전자통신연구원
IPC: H03M13/37
Abstract: 1. 청구범위에 기재된 발명이 속하는 기술분야
본 발명은, 터보 인터리버의 출력 주소 산출 장치에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은, 메모리를 사용하지 않고, 카운터 클럭신호에 의한 유효신호에 따라 가산 및 감산을 반복적으로 수행하여 터보 인터리버의 출력 주소를 산출하는, 터보 인터리버의 출력 주소 산출 장치를 제공하는데 그 목적이 있음.
3. 발명의 해결 방법의 요지
본 발명은, 터보 인터리버의 출력 주소 산출 장치에 있어서, 프레임 크기(길이)에 따른 클럭신호를 발생시키기 위한 카운팅수단; 상기 카운팅수단으로부터의 클럭신호에 따라 유효신호를 생성하기 위한 유효신호 생성수단; 상기 유효신호에 따라, 기 저장되어 있는 제1 인터리빙 산출 파라미터를 입력받아, 가산 및 감산을 통해 제1 출력 주소 산출 파라미터를 계산하기 위한 가감산수단; 상기 카운팅수단에서 발생시킨 클럭신호 중 특정 비트를 선택신호로 입력받아, 기 저장되어 있다가 입력되는 제2 인터리빙 산출 파라미터
중 어느 하나를 제2 출력 주소 산출 파라미터로 선택하기 위한 선택수단; 및 상기 제1 및 제2 출력 주소 산출 파라미터를 입력받아, 가산 및 감산을 통해 출력 주소를 계산하기 위한 출력 주소 연산수단을 포함함.
4. 발명의 중요한 용도
본 발명은 터보 부호기 등에 이용됨.
위성 디지털 비디오 방송, 터보 부호기, 터보 인터리버, 출력 주소, 반복적 가감산-
公开(公告)号：KR101070507B1
公开(公告)日：2011-10-05
申请号：KR1020080128465
申请日：2008-12-17
Applicant: 한국전자통신연구원
Abstract: 직교주파수분할다중화수신기를위한타이밍옵셋추정장치및 방법이제공된다. 타이밍옵셋추정방법은파일럿심볼을이용하여시간영역에서의임펄스응답을계산하는단계, 상기임펄스응답의타임샘플들의파워를기초로상기타임샘플들중 미리설정된개수의대상샘플들을추출하는단계, 상기추출된대상샘플들에대응하는타임인덱스들중 적어도하나의타임인덱스를선택하는단계및 상기선택된적어도하나의타임인덱스를이용하여타이밍옵셋을추정하는단계를포함한다.
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公开(公告)号：KR100929776B1
公开(公告)日：2009-12-03
申请号：KR1020070120790
申请日：2007-11-26
Applicant: 한국전자통신연구원
IPC: H03D3/00
CPC classification number: H04L27/38 , H04L2027/003 , H04L2027/0046 , H04L2027/0067
Abstract: A recursive demodulation apparatus is provided. Therecursive demodulation apparatus, including: a segment generation unit dividing data symbols with a residual frequency or phase error into a predetermined number of data symbols, and generating a plurality of segments, each of the plurality of segments including the predetermined number of data symbols; and a phase error correction unit sequentially correcting a phase error of each of the data symbols, included in the each of the plurality of segments, for each segment.
Abstract translation: 递归解调装置被提供。 递归解调装置包括：分段生成单元，将残留频率或相位误差的数据符号划分为预定数量的数据符号，并生成多个分段，多个分段中的每一个包括预定数量的数据符号; 以及相位误差校正单元，对于每个片段，顺序地校正包括在所述多个片段中的每个片段中的每个数据符号的相位误差。
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