-
公开(公告)号：KR1020030056270A
公开(公告)日：2003-07-04
申请号：KR1020010086467
申请日：2001-12-28
Applicant: 한국전자통신연구원
IPC: H04L27/22
CPC classification number: H04L27/22 , H04L27/2662
Abstract: PURPOSE: A symbol timing estimation apparatus according to carrier frequency variation range and a method thereof are provided to estimate symbol timing using an output signal of a matching filter when a carrier frequency variation is small and to estimate it using an input signal of the matching filter when the carrier frequency variation is large. CONSTITUTION: According to the symbol timing estimation apparatus, a filtering unit(100) filters a sampling signal. An information generation unit(210) generates a control signal to determine whether to use an output signal of a signal selection unit(200) as the sampling signal or as a filtering signal from the filtering unit, according to the variation range of a received carrier frequency. The signal selection unit outputs one of the sampling signal and the filtering signal selectively, according to the control signal. And a symbol timing estimation unit(110) estimates the symbol timing of the signal selected by the signal selection unit.
Abstract translation: 目的：提供根据载波频率变化范围的符号定时估计装置及其方法，用于当载波频率变化小时使用匹配滤波器的输出信号来估计符号定时，并使用匹配滤波器的输入信号 当载波频率变化大时。 构成：根据符号定时估计装置，滤波单元（100）对采样信号进行滤波。 信息生成单元（210）根据接收到的载波的变化范围，生成控制信号，以决定是否使用信号选择单元（200）的输出信号作为采样信号，或者作为来自滤波单元的滤波信号 频率。 信号选择单元根据控制信号有选择地输出采样信号和滤波信号中的一个。 并且符号定时估计单元（110）估计由信号选择单元选择的信号的符号定时。
-
公开(公告)号：KR1020150094198A
公开(公告)日：2015-08-19
申请号：KR1020140015198
申请日：2014-02-11
Applicant: 한국전자통신연구원
CPC classification number: H04B7/082 , H01Q1/34 , H01Q3/26 , H01Q21/29 , H04B7/0404 , H04B7/0808 , H04B7/0814
Abstract: 본 발명의 일 실시예에 따른 안테나 스위칭 시스템은 무선 신호 수신용으로 선박에 장착되는 다수의 지향성 안테나; 상기 다수의 지향성 안테나 들 중에 하나를 선택하는 안테나 스위치; 상기 안테나 스위치를 통해 상기 지향성 안테나와 연결되어, 수신 신호의 세기를 추출하는 모뎀; 및 상기 수신 신호의 세기, 송신측 선박 및 자신의 GPS/DR 정보에 기초하여 상기 안테나 스위치로 안테나 선택 신호를 출력하는 스위칭 판단부를 포함한다.
Abstract translation: 本发明提供一种多天线切换系统，包括：安装在船上的多个定向天线，用于接收无线信号; 选择定向天线中的一个的天线开关; 经由天线开关连接到定向天线的调制解调器以提取接收信号强度指示; 以及切换确定单元，基于所接收的信号强度指示，发送侧船及其自身的GPS / DR信息向天线切换器输出天线选择信号。
-
53.发明公开
公开(公告)号：KR1020140096584A
公开(公告)日：2014-08-06
申请号：KR1020130009312
申请日：2013-01-28
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0857 , H04B7/082 , H04B7/12
Abstract: The present invention relates to a method and an apparatus of performing direction search and wireless communications by using multiple wireless channels, which is multiple frequency bands, in a wireless communications system, configured to use a plurality of directional antennas facing in different directions, to assign sequentially along the direction one by one in the frequency bands which are predetermined to the directional antennas, to compare the strength of signals received by the directional antennas, and to perform direction search and wireless communications of radio signals through the directional antenna having the most high strength of the received signal by comparing the strength of the received signals of the directional antenna. Therefore, the present invention can provide a frequency diversity effect in an environment where the received signal is severely changed by distance according to the frequency band by the interference of sea reflected wave such as sea.
Abstract translation: 本发明涉及一种通过在无线通信系统中使用多个频带的多个无线信道来执行方向搜索和无线通信的方法和装置，其被配置为使用面向不同方向的多个定向天线来分配 在定向天线预定的频带中沿着该方向一个一个地顺序地沿着该方向，以便比较由定向天线接收到的信号的强度，并通过具有最高的定向天线的无线电信号执行无线电信号的方向搜索和无线通信 通过比较定向天线的接收信号的强度来获得接收信号的强度。 因此，本发明可以在接收信号通过海浪等海洋反射波的干扰根据频带严重地改变距离的环境中提供频率分集效应。
-
公开(公告)号：KR1020140074077A
公开(公告)日：2014-06-17
申请号：KR1020120142281
申请日：2012-12-07
Applicant: 한국전자통신연구원
IPC: H04W72/04
CPC classification number: H04W72/082 , H04W72/0486
Abstract: The present invention relates to a wireless channel allocating device and method in a maritime communication system. The wireless channel allocating device in the maritime communication system according to the present invention allocates a wireless channel which is different from a wireless channel of an adjacent relay station based on the location information of the relay station to request connection and determines the change of the allocated wireless channel according to the number of the relay stations using the same wireless channel.
Abstract translation: 本发明涉及一种海事通信系统中的无线信道分配装置和方法。 根据本发明的海事通信系统中的无线信道分配装置基于中继站的位置信息，分配与相邻中继站的无线信道不同的无线信道，以请求连接，并确定所分配的 无线信道根据使用相同无线信道的中继站的数量。
-
公开(公告)号：KR1020140032664A
公开(公告)日：2014-03-17
申请号：KR1020120099227
申请日：2012-09-07
Applicant: 한국전자통신연구원
Abstract: The present invention relates to wireless communication, and more particularly, relates to a wireless communication method and a wireless communication apparatus for performing multi-hop relay communication with mobile stations such as ships by using a directional antenna in a maritime broadband wireless communication system. The present invention is characterized by including a first communication unit communicating with a first communication device of a counterpart for relaying a base station or a wireless signal, a second communication unit communicating with a second communication device of the counterpart, and a bridge for connecting the first communication unit with the second communication unit, wherein the first communication unit includes a first AP set, multiple APs in the first AP set are connected to directional antennas directed in mutually different directions, the second communication unit includes a second AP set, and multiple APs in the second AP set are connected to directional antennas directed in mutually different directions. [Reference numerals] (100) First communication unit; (110) Second communication unit; (120) Bridge; (130) Internal network of ship
Abstract translation: 本发明涉及无线通信，更具体地，涉及一种无线通信方法和无线通信装置，用于通过在海上宽带无线通信系统中使用定向天线来执行与船舶等移动站的多跳中继通信。 本发明的特征在于包括与第一通信设备通信的第一通信单元，用于中继基站或无线信号的第一通信设备，与对方的第二通信设备通信的第二通信单元，以及用于连接 第一通信单元，其中第一通信单元包括第一AP集合，第一AP集合中的多个AP被连接到以相互不同的方向指向的定向天线，第二通信单元包括第二AP集，多个 第二AP组中的AP连接到以相互不同方向指向的定向天线。 （附图标记）（100）第一通信单元; （110）第二通信单元; （120）桥; （130）船内内网
-
Patent Agency Ranking
公开(公告)号：KR1020140010624A
公开(公告)日：2014-01-27
申请号：KR1020120077114
申请日：2012-07-16
Applicant: 한국전자통신연구원
Abstract: A method and a device for maritime wireless communication are disclosed. The device for maritime wireless communication comprises a terrestrial network communication part for communicating with a terrestrial network; a maritime network communication part for communicating with a maritime network; and a communication control part for linking the communications between the terrestrial and maritime network communication parts based on the destination address of data which is supplied from the terrestrial or maritime network communication part. Therefore, terrestrial broadband wireless data communication services become available for the sea. [Reference numerals] (210) Terrestrial network communication part; (220) Maritime network communication part; (230) Multi-band control part; (240) Communication control part
Abstract translation: 公开了一种用于海上无线通信的方法和装置。 用于海上无线通信的设备包括用于与地面网络通信的地面网络通信部分; 用于与海事网络通信的海事网络通信部分; 以及通信控制部分，用于基于从陆地或海运网络通信部分提供的数据的目的地地址来链接地面和海上网络通信部分之间的通信。 因此，陆地宽带无线数据通信服务可供海上使用。 （附图标记）（210）地面网络通信部; （220）海上通信部分; （230）多频段控制部分; （240）通讯控制部分
-
公开(公告)号：KR1020130120727A
公开(公告)日：2013-11-05
申请号：KR1020120043841
申请日：2012-04-26
Applicant: 한국전자통신연구원
CPC classification number: H04L25/061 , H04B1/0053 , H04B2001/305
Abstract: The present invention relates to a method for generating a multi-band RF signal by correcting direct current offset and removing an image signal by a RF transmitter in a marine wireless communication environment, and an apparatus for the same, the apparatus comprising; a baseband conversion unit for converting, into a baseband signal, each of RF signals to a baseband modulation signal having a negative frequency and a baseband modulation signal having a positive frequency; a phase correction unit for removing an image from a multi-band signal in response to the baseband signal; a direct current offset correction unit for correcting direct current offset for the baseband modulation signal using the multi-band signal from which the image is removed; and a RF transmission unit for generating RF signals using a signal in which the direct current offset is corrected, and transmitting the RF signal through an antenna. [Reference numerals] (200b) Rate matching unit;(800) Phase correction unit;(900) Direct current offset correction unit
Abstract translation: 本发明涉及通过在海洋无线通信环境中通过RF发射机校正直流偏移和去除图像信号来产生多频带RF信号的方法及其装置，该装置包括： 基带转换单元，用于将每个RF信号转换成具有负频率的基带调制信号和具有正频率的基带调制信号; 相位校正单元，用于响应于基带信号从多频带信号中去除图像; 直流偏移校正单元，用于使用去除图像的多频带信号来校正基带调制信号的直流偏移; 以及RF发送单元，用于使用校正了直流偏移的信号来产生RF信号，并且通过天线发送RF信号。 （200b）速率匹配单元;（800）相位校正单元;（900）直流偏移校正单元
-
公开(公告)号：KR101259898B1
公开(公告)日：2013-05-02
申请号：KR1020090114726
申请日：2009-11-25
Applicant: 한국전자통신연구원
Abstract: 본발명은블록상태인식장치및 방법에관한것으로, 적재공간에블록을실어서이송할수 있는이송차량에의한블록의적재또는하적상태를전자적으로자동인식하여제공함으로써, 작업자의관찰및 보고에의존하던종래기술과비교할때에상대적으로높은정확성및 신속성을제공하는이점이있다.
-
公开(公告)号：KR1020110041228A
公开(公告)日：2011-04-21
申请号：KR1020090098302
申请日：2009-10-15
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and a method for estimating position of objects are provided to estimate the position of an object based on the separation distance from the object, moving angle, and position data. CONSTITUTION: The device include a distance calculator(210), an image acquisition unit(220), a positioning unit(230), a synchronization unit(240), and a location decision unit(250). The distance calculator calculates the separation distance from an object through communication. When the distance calculator receives a signal through communication, the image acquisition unit takes a picture of the object. The positioning unit measures the moving direction and position of an object position estimation unit. The synchronization unit tags the reception signal of the distance calculator, the image of the image acquisition unit, and the moving direction and position of the positioning unit. The location decision unit decides the estimated position of the object.
Abstract translation: 目的：提供一种用于估计物体位置的装置和方法，用于基于与物体的距离，移动角度和位置数据来估计物体的位置。 构成：设备包括距离计算器（210），图像获取单元（220），定位单元（230），同步单元（240）和位置确定单元（250）。 距离计算器通过通信计算与物体的距离。 当距离计算器通过通信接收信号时，图像获取单元拍摄对象的图像。 定位单元测量物体位置估计单元的移动方向和位置。 同步单元标记距离计算器的接收信号，图像获取单元的图像以及定位单元的移动方向和位置。 位置决定单元决定物体的估计位置。
-
公开(公告)号：KR1020100072544A
公开(公告)日：2010-07-01
申请号：KR1020080130977
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: G06Q50/04 , G05D1/0278 , G06K9/46
Abstract: PURPOSE: An apparatus and a method for managing a block of a vessel are provided to adhere a GPS terminal to a separate signal number unit and move the signal number unit with transporter loading ship block together, thereby presuming location of the moving ship block. CONSTITUTION: A location estimation unit(120) produces center position of a vessel block through the first GPS(Global Positioning System) of a navigation sensor(110). The location estimation unit determines location of the first address in open-air storage yard map information from the center position. A block location management unit(130) receives the first video information of still signalman unit in the first address. The block location management unit receives the second video information of the ship block which is unloaded in the first address. The block location management unit reflects breadth information of traverse direction of unloaded vessel block to the open-air yard map.
Abstract translation: 目的：提供一种用于管理容器块的装置和方法，以将GPS终端附着到单独的信号编号单元，并将具有运送装载装载块的信号编号单元移动到一起，从而假设移动的船体块的位置。 构成：位置估计单元（120）通过导航传感器（110）的第一GPS（全球定位系统））产生容器块的中心位置。 位置估计单元从中心位置确定露天存放场地图信息中的第一地址的位置。 块位置管理单元（130）在第一地址中接收静止信号单元的第一视频信息。 块位置管理单元接收在第一地址中卸载的船舶块的第二视频信息。 块位置管理单元将卸载的船只块的横向方向的宽度信息反映到露天堆场地图。
-
-
-
-
-
-
-
-
-
Search Results
66
records
(took 0.025 seconds)
