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公开(公告)号：KR100945530B1
公开(公告)日：2010-03-09
申请号：KR1020080025903
申请日：2008-03-20
Applicant: 한국전자통신연구원 , 서강대학교산학협력단
Abstract: 본 발명은 반송파의 주파수 오차에 기반한 상관 방식 선택 장치 및 그 방법에 관한 것으로, 반송파에 대한 주파수 오차가 존재하는 통신 시스템에서, 초기 동기 획득을 위한 상관값 계산 시 각 상관(correlation) 방식 간의 주파수 오차 경계점을 산출한 후 해당 영역별로 상관 방식을 선택함으로써, 보다 효율적으로 초기 동기를 획득하도록 하기 위한, 반송파의 주파수 오차에 기반한 상관 방식 선택 장치 및 그 방법을 제공하고자 한다.
이를 위하여, 본 발명은 상관 방식 선택 방법에 있어서, 각 상관 방식별로 정규화된 주파수 옵셋에 따른 미검출 확률 값들을 산출하는 미검출 확률 값 산출단계; 상기 산출한 각 상관 방식별 미검출 확률 값들의 그래프가 서로 만나는 점을 주파수 오차 경계점으로 결정하는 단계; 및 상기 결정한 주파수 오차 경계점을 기반으로 상관 방식을 선택하는 상관방식 선택단계를 포함한다.
주파수 오차 경계점, 직접 상관 방식, 차등 상관 방식, 가중치 적용 차등 상관 방식, 허위 정보율, 미검출 확률-
Patent Agency Ranking
公开(公告)号：KR100805814B1
公开(公告)日：2008-02-21
申请号：KR1020060124831
申请日：2006-12-08
Applicant: 한국전자통신연구원 , 서강대학교산학협력단
IPC: H04N5/04
CPC classification number: H04N21/4382 , H04H40/90 , H04L7/042 , H04L27/2656 , H04N7/20 , H04N21/238 , H04N21/2383 , H04N21/242 , H04N21/6143
Abstract: A frame synchronization and structure detecting method in a satellite broadcasting system is provided to detect frame synchronization and structure according to the number of points where a generated index row is matched in a frame start point presumption location, thereby detecting the frame synchronization and structure with low complexity and less memory capacity. A frame synchronization and structure detecting method comprises the following steps of: calculating a differential correlation value of a received symbol(201); generating an index row of a symbol where the calculated differential correlation value exceeds a threshold value(202); calculating a frame start point presumption location corresponding to the total frame number by using the number of symbols per frame by each frame structure(203); and detecting frame synchronization and structure according to the number of points where the generated index row is matched and the calculated frame start point presumption location(204).
Abstract translation: 提供了一种卫星广播系统中的帧同步和结构检测方法，用于根据帧起始点推定位置中生成的索引行匹配的点数来检测帧同步和结构，从而以低的速度检测帧同步和结构 复杂性和更少的内存容量。 帧同步和结构检测方法包括以下步骤：计算接收符号（201）的差分相关值; 生成所计算的差分相关值超过阈值（202）的符号的索引行; 通过每帧结构（203）使用每帧的符号数来计算与总帧数相对应的帧起始点推测位置; 以及根据所生成的索引行匹配的点数和所计算的帧起始点推定位置来检测帧同步和结构（204）。
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公开(公告)号：KR101693393B1
公开(公告)日：2017-01-05
申请号：KR1020120056907
申请日：2012-05-29
Applicant: 한국전자통신연구원
Abstract: 본발명은, 통신시스템에서접이식대수주기안테나에있어서, 제 1 중앙도전선로의일측에만제 1 폴소자들이배열된제 1 안테나부소자와제 2 중앙도전선로의일측에만제 2 폴소자들이배열된제 2 안테나부소자를포함하는제 1 대수주기안테나소자; 제 3 중앙도전선로의일측에만제 3 폴소자들이배열된제 3 안테나부소자와제 4 중앙도전선로의일측에만제 4 폴소자들이배열된제 4 안테나부소자를포함하는제 2 대수주기안테나소자; 상기제 1 안테나부소자와상기제 2 안테나부소자를결합및 분리하는제 1 결합보조부; 및상기제 3 안테나부소자와상기제 4 안테나부소자를결합및 분리하는제 2 결합보조부를포함한다.
Abstract translation: 本发明涉及通信系统中的折叠对数周期性天线，其包括：第一对数周期性天线元件，其包括第一触发子元件，其中第一极元件仅布置在第一中心导线的一侧上， 第二天线子元件，其中第二极元件仅布置在第二中心导线的一侧上; 包括第三天线子元件的第二对数周期性天线元件，其中第三极元件仅布置在第三中心导电线的一侧上，第四天线子元件仅在第一天线元件的一侧上布置 第四中心导线; 组合和分离第一天线子元件和第二天线子元件的第一组合子部件; 以及组合和分离第三天线子元件和第四天线子元件的第二组合子部分。
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公开(公告)号：KR1020140021450A
公开(公告)日：2014-02-20
申请号：KR1020120088062
申请日：2012-08-10
Applicant: 한국전자통신연구원
CPC classification number: G10K11/002 , H03D7/165
Abstract: The present invention includes a dual channel digitizing unit which converts a signal inputted to each dual channel into a digital signal by the down conversion of a frequency and a digital signal processing unit which reduces a noise in a time zone by using a sample cross-correlation through feedback from a time sample zone of the signal inputted from the dual channel digitizing unit.
Abstract translation: 本发明包括双通道数字化单元，其通过频率的下变频将输入到每个双通道的信号转换为数字信号，并且通过使用样本互相关来减少时区中的噪声的数字信号处理单元 通过从双通道数字化单元输入的信号的时间采样区域的反馈。
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公开(公告)号：KR1020140021285A
公开(公告)日：2014-02-20
申请号：KR1020120087467
申请日：2012-08-09
Applicant: 한국전자통신연구원
IPC: H03D7/16
Abstract: The present invention relates to a broadband frequency conversion device which includes: a first frequency mixer for down-converting a received frequency according to a first local oscillation frequency generated in a first local oscillator to a first intermediate frequency; a second frequency mixer for down-converting the first intermediate frequency according to a second local oscillation frequency generated in a second local oscillator to a second intermediate frequency; and a control unit for controlling the first local oscillator to make the first intermediate frequency correspond to an image frequency which is generated by the second local oscillation frequency and second intermediate frequency according to the received frequency. According to the present invention, a receivable frequency range can be extended while maintaining a sweep range of the first local oscillation frequency, and the spurious performance can be improved. [Reference numerals] (170) Control unit
Abstract translation: 本发明涉及一种宽带频率转换装置，其包括：第一混频器，用于根据在第一本地振荡器中产生的第一本地振荡频率将接收频率下变频到第一中频; 第二混频器，用于根据在第二本地振荡器中产生的第二本地振荡频率将第一中频缩减为第二中频; 以及控制单元，用于控制第一本地振荡器以使第一中间频率对应于根据接收到的频率由第二本地振荡频率和第二中频产生的图像频率。 根据本发明，可以延长可接收的频率范围，同时保持第一本地振荡频率的扫描范围，并且可以提高杂散性能。 （附图标记）（170）控制单元
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公开(公告)号：KR1020110046956A
公开(公告)日：2011-05-06
申请号：KR1020090103684
申请日：2009-10-29
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and a method of a digital cumulative spectrum analyzer for direction finding are provided to implement the characteristics of an input signal at angle through which a user can't monitor a display screen in real time in past time. CONSTITUTION: In an apparatus and a method of a digital cumulative spectrum analyzer for direction finding, an RF down-conversion unit(301) receives an RF signal from an antenna and converts it into a middle frequency. A digital processing unit(310) converts an analog signal which is obtained by covering the RF signal into a middle frequency into a digital signal. The digital processing unit reduces the sampling speed of the converted digital signal to covert a baseband complex number. A spectrum processing unit(320) maps angles corresponding to an azimuth and calculated level to an X-axis and an Y-axis and assign different color according to each accumulation ratio of a reservation mode.
Abstract translation: 目的：提供用于方向发现的数字累积频谱分析仪的装置和方法，以实现用户不能在过去时间内实时监视显示屏的角度的输入信号的特性。 构成：在用于测向的数字累积频谱分析仪的装置和方法中，RF下变频单元（301）从天线接收RF信号并将其转换成中频。 数字处理单元（310）将通过将RF信号覆盖为中频而获得的模拟信号转换为数字信号。 数字处理单元降低转换的数字信号的采样速度以隐藏基带复数。 频谱处理单元（320）将与方位角和计算水平相对应的角度映射到X轴和Y轴，并根据预约模式的每个累积比分配不同的颜色。
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