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公开(公告)号：KR101343761B1
公开(公告)日：2013-12-19
申请号：KR1020090122209
申请日：2009-12-10
Applicant: 한국전자통신연구원 , 서울과학기술대학교 산학협력단
Abstract: 워터마킹한 OFDM 신호를이용한위치인식장치및 방법을제안한다. 본발명의실시예에따른워터마킹한 OFDM 신호를이용한위치인식방법은, 워터마킹한 OFDM 신호수신하고, 워터마킹한 OFDM 신호에서상관특성을도출하여 OFDM 송신기들을식별하고, 각 OFDM 송신기들을상관특성피크치를구하고, 3개이상의 OFDM 송신기들의상관특성피크치의크기를이용해서계산하는 3개이상의 OFDM 송신기들과의거리들을이용해서휴대용단말기의위치를계산한다.
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公开(公告)号：KR1020130080569A
公开(公告)日：2013-07-15
申请号：KR1020120001424
申请日：2012-01-05
Applicant: 한국전자통신연구원
Abstract: PURPOSE: Device and method transmitting supplementary data using spread spectrum are provided to add data to a broadcasting signal for distress broadcasting and additional service without additional channel allocation using spread spectrum. CONSTITUTION: A service data generation unit (110) generates each transmission header of service packets and generates service data including the transmission header and service packet. A transmission data generation unit (120) performs channel coding and spread spectrum of the service data. The transmission data generation unit generates transmission data by inserting a predetermined synchronization code into the spread spectrum data. A modulation unit (131) modulates the transmission data. A signal synthesis unit (133) synthesizes the modulated transmission data to a broadcasting signal. [Reference numerals] (111) Metadata generation unit; (112) Service packet generation unit; (113) Transfer header generation unit; (114) Multiplex unit; (121) First channel coding unit; (122) Interleaving unit; (123) First band spread unit; (124) Second channel coding unit; (125) Second band spread unit; (126) Synchronized spread cod insertion unit; (127) Frame generation unit; (131) Modulation unit; (132) Power control unit; (133) Signal synthesis unit; (140) T-DMB transfer unit; (AA) Message
Abstract translation: 目的：提供使用扩展频谱传输辅助数据的设备和方法，用于将广播信号添加到遇难广播和附加业务的广播信号中，而无需使用扩频进行附加信道分配。 构成：服务数据生成单元（110）生成服务分组的每个发送头部，并生成包括发送头部和服务包的服务数据。 发送数据生成单元（120）进行业务数据的信道编码和扩频。 发送数据生成单元通过将预定的同步码插入扩频数据来生成发送数据。 调制单元（131）调制发送数据。 信号合成单元（133）将调制的发送数据合成到广播信号。 （111）元数据生成部; （112）服务包生成单元; （113）传送标题生成单元; （114）复用单元; （121）第一信道编码单元; （122）交错单位; （123）第一传播单位; （124）第二信道编码单元; （125）二波段扩散单元; （126）同步扩频鳕鱼插入单元; （127）帧生成单元; （131）调制单元; （132）电源控制单元; （133）信号合成单元; （140）T-DMB传输单元; （AA）讯息
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公开(公告)号：KR1020130038787A
公开(公告)日：2013-04-18
申请号：KR1020120028048
申请日：2012-03-20
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A system for providing additional information and a method thereof are provided to offer additional information to a local area through a multimedia service. CONSTITUTION: An additional information generation unit(112) generates additional information. A channel searching unit(113) searches frequencies. The channel searching unit selects an additional information broadcasting channel transmitting the additional information from channels which are currently not used. A channel information providing unit(114) provides the information of the additional information broadcasting channel to a normal broadcasting device. An additional information transmission unit(115) broadcasts the additional information through the additional information broadcasting channel. [Reference numerals] (111) Control unit; (112) Additional information generation unit; (113) Channel searching unit; (114) Channel information providing unit; (115) Additional information transmission unit; (121) General broadcasting signal generation unit; (122) Broadcasting signal transmission unit; (231) Additional information channel detection unit; (232) Interface unit; (233) Reception unit; (234) Display unit; (AA) Additional information providing event;
Abstract translation: 目的：提供用于提供附加信息的系统及其方法，以通过多媒体服务向本地区域提供附加信息。 构成：附加信息生成单元（112）产生附加信息。 频道搜索单元（113）搜索频率。 频道搜索单元从当前未使用的频道中选择发送附加信息的附加信息广播频道。 频道信息提供单元（114）向普通广播设备提供附加信息广播频道的信息。 附加信息发送单元（115）通过附加信息广播信道广播附加信息。 （附图标记）（111）控制单元; （112）附加信息生成单元; （113）频道搜索单元; （114）信道信息提供单元; （115）附加信息传输单元; （121）一般广播信号发生单元; （122）广播信号发送单元; （231）附加信息通道检测单元; （232）接口单元; （233）接待单位; （234）显示单元; （AA）提供事件的附加信息;
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公开(公告)号：KR1020120062548A
公开(公告)日：2012-06-14
申请号：KR1020100123850
申请日：2010-12-06
Applicant: 한국전자통신연구원
IPC: H04N21/235 , H04H20/59
CPC classification number: H04N21/4383 , H04H20/59 , H04J1/02 , H04N21/236
Abstract: PURPOSE: A broadcasting apparatus of disaster information and a method thereof are provided to broadcast a disaster condition in a specific region and to increase the efficiency of a system. CONSTITUTION: A disaster information processing unit(110) transfers changed information to an information process controlling unit. Each modulator performs COFDM(Coded Orthogonal Frequency Division Multiplexing) modulation of a multiplexing signal. Each of the modulators outputs the COFDM signal. An RF(Radio Frequency) transmitting unit(150) transmits the signal selected by a signal switching unit.
Abstract translation: 目的：提供灾害信息广播装置及其方法，以广播特定区域的灾害状况，提高系统的效率。 构成：灾害信息处理单元（110）将改变的信息传送到信息处理控制单元。 每个调制器执行复用信号的COFDM（编码正交频分复用）调制。 每个调制器输出COFDM信号。 RF（射频）发送单元（150）发送由信号切换单元选择的信号。
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公开(公告)号：KR1020120032403A
公开(公告)日：2012-04-05
申请号：KR1020110064264
申请日：2011-06-30
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A transmission method of digital multi-media broadcast is provided to receive an emergency signal by transmitting additional data. CONSTITUTION: A transmission apparatus respectively creates an emergency information signal and an emergency information existence signal(S510). The transmission apparatus creates a diffusion code of the emergency information existence signal and the diffusion signal of the emergency information signal by using the diffusion code(S520). A PN code is used as the diffusion code. The transmission apparatus transmits an OFDM(Orthogonal Frequency Division Multiplexing) signal, the diffusion code of the emergency information existence signal and the diffusion signal of the emergency information signal to a reception apparatus(S530).
Abstract translation: 目的：提供数字多媒体广播的传输方法，通过发送附加数据来接收紧急信号。 构成：发送装置分别创建紧急信息信号和紧急信息存在信号（S510）。 发送装置利用扩散码生成紧急信息存在信号的扩散码和紧急信息信号的扩散信号（S520）。 使用PN码作为扩散码。 发送装置向接收装置发送OFDM（正交频分复用）信号，紧急信息存在信号的扩散码和紧急信息信号的扩散信号（S530）。
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Patent Agency Ranking
公开(公告)号：KR1020110065632A
公开(公告)日：2011-06-16
申请号：KR1020090122210
申请日：2009-12-10
Applicant: 한국전자통신연구원 , 서울과학기술대학교 산학협력단
Abstract: PURPOSE: A method and method for transceiving additional data at a high speed by using a variable code set mapping are provided to increase data transmission rate according to the number of a diffusion code of a variable code set. CONSTITUTION: A variable code set storage unit(130) stores channel condition and a variable chord set. A mapping unit(140) selects a variable code set corresponding to channel condition. The mapping unit selects a preset spreading code corresponding to the supplementary data included in the preset size. A spreading/modulating unit(150) diffuses or modulates a data frame to be transmitted by using the selected diffused code.
Abstract translation: 目的：提供一种通过使用可变代码集映射来高速收发附加数据的方法和方法，以根据可变代码集的扩散码的数量增加数据传输速率。 构成：可变代码集存储单元（130）存储信道条件和可变和弦集合。 映射单元（140）选择与信道条件对应的可变码集。 映射单元选择与包括在预设大小中的补充数据相对应的预设扩展码。 扩展/调制单元（150）通过使用所选择的扩散码来扩散或调制要发送的数据帧。
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公开(公告)号：KR1020110060532A
公开(公告)日：2011-06-08
申请号：KR1020090117141
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04H20/59 , H04N21/234 , H04N21/235
CPC classification number: H04H20/59 , H04N21/234 , H04N21/235
Abstract: PURPOSE: A disaster broadcasting providing method for providing a disaster service signal and a broadcasting relay apparatus implementing the same are provided to offer the disaster related broadcasting of a specific area to the broadcast channels of users in a corresponding area. CONSTITUTION: A disaster message generating unit receives a disaster service signal(S1320). An audio null stream unit selectively inserts null stream into an encoded disaster service signal(S1340). First and second disaster message stream units multiplex audio/video/data signals(S1350). Ensemble multiplexing units multiplex the multiplexed disaster message signals to ETI(Ensemble Transport Interface) signals(S1360).
Abstract translation: 目的：提供用于提供灾难信息的灾害广播提供方法和实施灾害信息的广播中继装置，以向相应区域中的用户的广播信道提供特定区域的灾害相关广播。 构成：灾害信息生成部接收灾难信号（S1320）。 音频零流单元选择性地将空流插入编码灾难服务信号（S1340）。 第一和第二灾难消息流单元复用音频/视频/数据信号（S1350）。 集成复用单元将多路复用的灾难信号信号复用到ETI（集成传输接口）信号（S1360）。
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公开(公告)号：KR1020090062907A
公开(公告)日：2009-06-17
申请号：KR1020070130391
申请日：2007-12-13
Applicant: 한국전자통신연구원
IPC: H04B7/14
CPC classification number: H04B7/15585 , H04J2011/0009 , H04L27/01 , H04L27/2656
Abstract: A relay apparatus and a relay method thereof are provided to increase the power of a signal re-transmitted through a transmission antenna by removing a feedback signal from a signal received through a receiving antenna. A receiver(100) frequency-down-converts an RF receiving signal to an IF(Intermediate Frequency) signal. An echo remover(200) removes a feedback signal from an IF receiving signal. A demodulator(300) demodulates a T-DMB frame in the IF signal where the feedback signal is removed, and then extracts/outputs a phase reference symbol to an equalizer. The equalizer updates the coefficient of a filter to compensate for the distortion of the IF signal.
Abstract translation: 提供一种中继装置及其中继方法，通过从通过接收天线接收的信号中去除反馈信号来增加通过发送天线再次发送的信号的功率。 接收机（100）将RF接收信号降频转换成IF（中频）信号。 回波去除器（200）从IF接收信号中去除反馈信号。 解调器（300）解调除去反馈信号的IF信号中的T-DMB帧，然后将相位参考符号提取/输出到均衡器。 均衡器更新滤波器的系数以补偿IF信号的失真。
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公开(公告)号：KR1020080112485A
公开(公告)日：2008-12-26
申请号：KR1020070060947
申请日：2007-06-21
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
CPC classification number: H04L27/2626 , H04L25/0204 , H04L27/2666 , H04L27/2695
Abstract: A method for OFDM(Orthogonal Frequency Division Multiplexing) communications capable of improving receiving performance of OFDM system using pilot signal and apparatus thereof are provided to steadily receive various adding data service during high speed moving. A method for OFDM(Orthogonal Frequency Division Multiplexing) communications capable of improving receiving performance of OFDM system using pilot signal comprises the following steps: a step for receiving a media signal from outside(501); a step for encoding/modulating an inputted digital signal(503, 505); and a step for inserting a pilot signal in a protective section of a modulated digital signal(513). The digital modulation step includes a step of a reverse fourier transforming(509) a signal which is orthogonally modulated.
Abstract translation: 提供了一种使用导频信号提高OFDM系统的接收性能的OFDM（正交频分复用）通信方法及其装置，用于在高速移动期间稳定地接收各种附加数据业务。 一种能够使用导频信号改善OFDM系统的接收性能的OFDM（正交频分复用）通信方法包括以下步骤：从外部接收媒体信号的步骤（501）; 用于对输入的数字信号进行编码/调制的步骤（503,505）; 以及用于将导频信号插入调制数字信号（513）的保护部分中的步骤。 数字调制步骤包括逆向傅立叶变换（509）正交调制信号的步骤。
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公开(公告)号：KR1020080050135A
公开(公告)日：2008-06-05
申请号：KR1020060120984
申请日：2006-12-01
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2604 , H04L25/022 , H04L25/0236
Abstract: A method and an apparatus for a hierarchical modulation using a pilot, and a method and an apparatus for receiving a hierarchically modulated signal are provided to improve a reception property by additionally transmitting a pilot signal with a modulated data signal. A hierarchical modulation apparatus includes a first encoder(10), a second encoder(11), a pilot insertion portion(12), and a hierarchical modulator(13). The first encoder encodes a first hierarchical signal stream. The second encoder encodes a second hierarchical signal stream. The pilot insertion portion inserts a pilot signal to the signal stream, which is encoded in the second encoder. The hierarchical modulator encodes the signals which are outputted from the first encoder and the pilot insertion portion, and combines the encoded results with each other.
Abstract translation: 提供了一种使用导频进行分级调制的方法和装置，以及用于接收分层调制信号的方法和装置，用于通过附加地发射具有调制数据信号的导频信号来提高接收特性。 分级调制装置包括第一编码器（10），第二编码器（11），导频插入部分（12）和分层调制器（13）。 第一编码器对第一分层信号流进行编码。 第二编码器对第二分层信号流进行编码。 导频插入部分将导频信号插入到在第二编码器中编码的信号流。 分级调制器对从第一编码器和导频插入部分输出的信号进行编码，并将编码结果彼此组合。
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