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公开(公告)号：KR100955401B1
公开(公告)日：2010-04-29
申请号：KR1020080048543
申请日：2008-05-26
Applicant: 한국전자통신연구원
CPC classification number: H04L27/00 , H04L27/0006
Abstract: 싸이클로-스테이셔너리 특성을 이용한 신호 검출 방법 및 장치를 개시한다. 본 발명에 의한 싸이클로-스테이셔너리 특성을 이용한 신호 검출 방법은, 입력 신호의 주기 주파수 영역에 대한 싸이클로-스테이셔너리 특성 값들을 산출하는 단계, 상기 산출된 싸이클로-스테이셔너리 특성 값들을 서로 곱셈 연산하고, 상기 곱셈 연산에 의한 결과값을 도출하는 단계, 및 상기 도출된 결과값을 이용하여 상기 입력 신호로부터 신호를 검출하는 단계를 포함한다.
싸이클로-스테이셔너리 특성, 신호 검출, 임계값 결정, 스펙트럼 센싱-
公开(公告)号：KR100932921B1
公开(公告)日：2009-12-21
申请号：KR1020070132614
申请日：2007-12-17
Applicant: 한국전자통신연구원
Abstract: An antenna containing groove scatterers is provided to laminate a plurality of metal plates to make a reflective plate and to form a groove in the reflective plate in order to scatter electromagnetic wave. An antenna containing groove scatterers comprises a plurality of layered metal plates. The layered metal plates have grooves(11) having different depth. The further the grooves are from the center of the metal plate, the shallower the depths become in one orbit among a parabolic orbit, oval orbit and hyperbolic orbit. When the depth of the groove is more than the wavelength of electromagnetic wave scattered in the groove, the depth of the groove is determined to half the wave.
Abstract translation: 提供一种包含沟槽散射体的天线，以层叠多个金属板以制造反射板并且在反射板中形成沟槽以便散射电磁波。 包含凹槽散射体的天线包括多个分层的金属板。 分层金属板具有不同深度的凹槽（11）。 凹槽距金属板中心越远，深度越浅，在抛物线轨道，椭圆轨道和双曲线轨道之间变成一个轨道。 当凹槽的深度大于在凹槽中散射的电磁波的波长时，凹槽的深度被确定为波的一半。
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公开(公告)号：KR100906807B1
公开(公告)日：2009-07-09
申请号：KR1020070085430
申请日：2007-08-24
Applicant: 한국전자통신연구원
CPC classification number: H04B1/28
Abstract: 본 발명은 인지 무선 시스템의 대역폭 제공 장치 및 그 방법에 관한 것이다.
본 발명에서는, 외부로부터 제공되는 방송 채널 대역의 일부 대역 중 시간적, 공간적으로 미사용 중인 대역인 조각 대역의 중심 주파수를 소정 크기 변화시키는 국부 신호의 발진 주파수를 계산한다. 그리고, 계산된 발진 주파수에 맞춰 제1 국부 신호를 출력하며, 출력된 제1 국부 신호와 외부 신호를 혼합하여, 외부 신호 내 조각 대역의 중심 주파수를 소정 크기 만큼 이동시킨다. 이후, 이동된 조각 대역의 주파수 대역 중 소정 크기인 통과 대역의 최대치보다 높은 주파수 대역은 필터링하여 제1 신호를 추출한다. 이어, 추출된 제1 신호와 제2 국부 신호를 혼합하여, 제1 신호 내 조각 대역의 중심 주파수를 이동시킨다. 그리고, 이동된 조각 대역의 주파수 대역 중 통과 대역의 최저치보다 낮은 주파수 대역은 필터링하여, 적어도 하나의 조각 대역을 추출한다. 이어, 추출된 조각 대역을 단말기 및 기지국에게 제공함으로써, 주파수 사용 효율을 증대시킨다.
인지 무선 시스템, 대역폭, 조각 대역, 추출, 개수, 필터(Filter)-
公开(公告)号：KR1020090065234A
公开(公告)日：2009-06-22
申请号：KR1020070132712
申请日：2007-12-17
Applicant: 한국전자통신연구원 , 중앙대학교 산학협력단
IPC: H03D7/00
Abstract: A high frequency differential mixer is provided to reduce a dimension of a chip by generating an ideal differential signal from a switching current. An active load(100) includes one or more transistors(QAL1,QAL2,QAL3,QAL4). The transistors are cross-connected. A switching part(110) is connected to the active load. The switching part includes a switching transistor for performing a switching operation. A conversion part(120) is connected to the switching part. The conversion part converts a high frequency signal of a single mode into a high frequency signal of a differential mode. The conversion part comprises an nMOS-FET(n-type Metal Oxide Semiconductor-Field Effect Transistor) of a common gate and a common source.
Abstract translation: 提供高频差分混频器以通过从开关电流产生理想的差分信号来减小芯片的尺寸。 有源负载（100）包括一个或多个晶体管（QAL1，QAL2，QAL3，QAL4）。 晶体管是交叉连接的。 开关部分（110）连接到有源负载。 开关部分包括用于执行开关操作的开关晶体管。 转换部分（120）连接到开关部分。 转换部分将单个模式的高频信号转换为差分模式的高频信号。 转换部分包括公共栅极和公共源的nMOS-FET（n型金属氧化物半导体场效应晶体管）。
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公开(公告)号：KR1020090065155A
公开(公告)日：2009-06-22
申请号：KR1020070132614
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H01Q15/16 , H01Q1/24 , H01Q15/0026 , H01Q19/12
Abstract: An antenna containing groove scatterers is provided to laminate a plurality of metal plates to make a reflective plate and to form a groove in the reflective plate in order to scatter electromagnetic wave. An antenna containing groove scatterers comprises a plurality of layered metal plates. The layered metal plates have grooves(11) having different depth. The further the grooves are from the center of the metal plate, the shallower the depths become in one orbit among a parabolic orbit, oval orbit and hyperbolic orbit. When the depth of the groove is more than the wavelength of electromagnetic wave scattered in the groove, the depth of the groove is determined to half the wave.
Abstract translation: 提供包含凹槽散射体的天线以层叠多个金属板以制成反射板并且在反射板中形成凹槽以便散射电磁波。 包含凹槽散射体的天线包括多个分层金属板。 层状金属板具有不同深度的凹槽（11）。 凹槽距金属板的中心越远，深度越深，在抛物线轨道，椭圆轨道和双曲轨道之间变成一个轨道。 当凹槽的深度大于散布在凹槽中的电磁波的波长时，凹槽的深度被确定为波的一半。
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Patent Agency Ranking
公开(公告)号：KR1020080097507A
公开(公告)日：2008-11-06
申请号：KR1020070042427
申请日：2007-05-02
Applicant: 한국전자통신연구원 , 인하대학교 산학협력단
CPC classification number: H04L27/2646 , H04L1/0003 , H04L1/0026
Abstract: A method and an apparatus for CQI(Channel Quality Indicator) control for adaptive modulation and coding in an OFDMA system improve capacity and fairness of the OFDMA system by variably controlling a size of a sub carrier group. A valid cluster is selected among clusters including one bin or more which are a plurality of subcarrier groups according to a predetermined standard(S335). An average CINR(Carrier-to-Interference-plus-Noise Ratio) of the valid cluster is calculated(S337). The optimum MCS level of each valid cluster is determined based on the average CINR value(S353). The optimum cluster among the valid clusters is determined based on the optimum MCS level(S373).
Abstract translation: 用于OFDMA系统中的自适应调制和编码的CQI（信道质量指示符）控制的方法和装置通过可变地控制子载波组的大小来提高OFDMA系统的容量和公平性。 根据预定标准，在包括作为多个子载波组的一个以上的群组中选择有效的群集（S335）。 计算有效集群的平均CINR（载波与干扰加噪声比）（S337）。 基于平均CINR值确定每个有效簇的最佳MCS级别（S353）。 基于最佳MCS级别确定有效簇中的最优簇（S373）。
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公开(公告)号：KR1020080078509A
公开(公告)日：2008-08-27
申请号：KR1020070058002
申请日：2007-06-13
Applicant: 한국전자통신연구원 , 포항공과대학교 산학협력단
Abstract: An antenna feed circuit and a switching beam forming apparatus are provided to simplify a structure and to reduce loss without a coupler and a cross line. An antenna feed circuit(100) includes a signal divider(102), a switching element(103), a plurality of phase shifters(104-108), and antennas(109-112). The signal divider divides an input signal. The switching element performs switching operation according to an external control signal. The plurality of phase shifters generate phase shifts of the divided signals according to the switching operation of the switching element. The antennas are connected to the phase shifters and form two sector beams. The phase shifters are composed of delay lines to generate phase delays.
Abstract translation: 提供天线馈电电路和切换波束形成装置，以简化结构并且减少没有耦合器和交叉线的损耗。 天线馈电电路（100）包括信号分配器（102），开关元件（103），多个移相器（104-108）和天线（109-112）。 信号分压器分割输入信号。 开关元件根据外部控制信号进行开关动作。 多个移相器根据开关元件的开关动作产生分频信号的相移。 天线连接到移相器并形成两个扇区波束。 移相器由延迟线组成，以产生相位延迟。
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公开(公告)号：KR1020080044752A
公开(公告)日：2008-05-21
申请号：KR1020070078569
申请日：2007-08-06
Applicant: 한국전자통신연구원
Abstract: A millimeter wave transition apparatus of a dielectric waveguide and a transmission line is provided to drastically reduce a design time of the millimeter wave transition apparatus and reduce a process error. A millimeter wave transition apparatus of a dielectric waveguide and a transmission line(210) includes a slot(230). The transition line is arranged at an input terminal and an output terminal along a signal transition direction at a top of an uppermost dielectric substrate to transit a signal. The dielectric waveguide becomes a signal transition path by being formed by top and bottom ground surfaces of a lowermost dielectric substrate and a via row arranged along the signal transition direction. The slot is arranged on the signal transition path of the top ground surface and transits the signal inputted from the input terminal transmission line to an output terminal transmission line via the dielectric waveguide by connecting the transmission line to the dielectric waveguide.
Abstract translation: 提供介质波导和传输线的毫米波变换装置，以显着减少毫米波转换装置的设计时间并减少处理误差。 介质波导和传输线（210）的毫米波变换装置包括槽（230）。 过渡线被布置在输入端子和沿着信号转移方向的输出端子，位于最上面的电介质基板的顶部以传送信号。 电介质波导通过由沿着信号转移方向布置的最下面的电介质基板和通孔列的顶面和底面而形成信号转变路径。 通过将传输线连接到电介质波导，槽被布置在顶部接地表面的信号转换路径上，并且通过电介质波导将从输入端子传输线输入的信号转换到输出端子传输线。
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219.发明公开인지 무선 시스템에서의 스펙트럼 센싱 방법, 전송휴지기간배치 방법, 이를 위한 단말, 기지국 및 슈퍼프레임 구조 有权用于感应无线电系统中的光谱和安装周期的方法，客户设备设备，基站和使用其的超级结构
公开(公告)号：KR1020070082039A
公开(公告)日：2007-08-20
申请号：KR1020070014976
申请日：2007-02-13
Applicant: 한국전자통신연구원
CPC classification number: H04W72/085 , H04W16/14
Abstract: A method for sensing spectrum and arranging quiet period in a cognitive radio system, a CPE(Customer Premise Equipment), a base station and a superframe structure using the same are provided to increase the reliability of detection regarding whether an incumbent user appears in his/her frequency channel. A base station(800) using a method for sensing spectrum and arranging quiet period in a cognitive radio system comprises a transceiver(802) and a sensor(804). The base station(800) constructs a WRAN(Wireless Regional Area Network) with the first CPE(810) and the second CPE(820). The first CPE(810) includes a transceiver(812) and a sensor(814). The second CPE(820) includes a transceiver(822) and a sensor(824). The transceiver(802) communicates with the first CPE(810) via the first frequency channel CH_1, communicates with the second CPE(820) via the second frequency channel CH_2, and does not perform transmission via the first or the second frequency channel CH_1 or CH_2 during a QP of the base station(800). The transceiver(802) may transmit information on the assignment of QPs of the first and second frequency channels CH_1 and CH_2 belonging to an active set to the first CPE(810) and the second CPE(820). The transceiver(802) may receive each result obtained by performing spectrum sensing for the first CPE(810) and the second CPE(820) from the first CPE(810) and the second CPE(820). Therefore, the base station(800) can utilize a result obtained by performing spectrum sensing and the results obtained by performing spectrum sensing for the first CPE(810) and the second CPE(820), thereby performing more reliable spectrum sensing. The sensor(804) performs spectrum sensing for the first frequency channel CH_1 during a QP of the first frequency channel CH_1, converts the first frequency channel CH_1 into the second frequency channel CH_2 before a QP of the second frequency channel CH_2, and performs spectrum sensing for the second frequency channel CH_2 during a QP of the second frequency channel CH_2.
Abstract translation: 提供了一种用于在认知无线电系统中感测频谱并安排安静周期的方法，CPE（客户端设备），基站和使用其的超帧结构来提高检测的可靠性，以确定现任用户是否出现在他/ 她的频道。 使用感测频谱的方法和在认知无线电系统中安排安静时段的基站（800）包括收发机（802）和传感器（804）。 基站（800）利用第一CPE（810）和第二CPE（820）构建WRAN（无线区域网络）。 第一CPE（810）包括收发器（812）和传感器（814）。 第二CPE（820）包括收发器（822）和传感器（824）。 收发机802经由第一频道CH_1与第一CPE（810）进行通信，经由第二频道CH_2与第二CPE（820）进行通信，不经由第一或第二频道CH_1或 CH_2在基站（800）的QP期间。 收发器（802）可以将属于有效集合的第一和第二频道CH_1和CH_2的QP的分配信息发送到第一CPE（810）和第二CPE（820）。 收发器（802）可以从第一CPE（810）和第二CPE（820）接收对第一CPE（810）和第二CPE（820）执行频谱感测而获得的每个结果。 因此，基站（800）可以利用通过对第一CPE（810）和第二CPE（820）执行频谱感测而获得的结果和通过执行频谱感测获得的结果，由此执行更可靠的频谱感测。 传感器（804）在第一频道CH_1的QP期间对第一频道CH_1进行频谱感测，在第二频道CH_2的QP之前将第一频道CH_1转换为第二频道CH_2，并执行频谱感测 在第二频道CH_2的QP期间用于第二频道CH_2。
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公开(公告)号：KR1020070061093A
公开(公告)日：2007-06-13
申请号：KR1020060045148
申请日：2006-05-19
Applicant: 한국전자통신연구원
IPC: H01P1/215
CPC classification number: H01P1/212 , H01P1/2002 , H01P1/20345 , H01P1/2088
Abstract: A band rejection filter utilizing a dielectric waveguide is provided to attenuate a signal of unwanted band by forming a via and an aperture on a multi-layered dielectric substrate. A band rejection filter utilizes a dielectric waveguide(10) having an upper ground surface(11), a lower ground surface(12), and a via(31). At least one cavity(30) is provided on the upper or upper ground surface to have the constant width, length and height by using the via and the number of the substrates so that the cavity is resonated at a wanted band rejection frequency. At least one aperture(20) is formed between the dielectric substrate and the cavity to connect the dielectric waveguide with the cavity.
Abstract translation: 提供利用电介质波导的带阻滤波器，通过在多层电介质基片上形成孔和孔来衰减不想要的带的信号。 带阻滤波器利用具有上接地表面（11），下接地表面（12）和通孔（31）的电介质波导（10）。 在上或上地面上设置至少一个空腔（30），以通过使用通孔和基板的数量使其具有恒定的宽度，长度和高度，使得空腔以期望的频带阻抗频率谐振。 在电介质基板和空腔之间形成至少一个开口（20），以将电介质波导与空腔连接起来。
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