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41.发明公开
公开(公告)号：KR1020100089784A
公开(公告)日：2010-08-12
申请号：KR1020100009848
申请日：2010-02-03
Applicant: 한국전자통신연구원
CPC classification number: H04N21/2368 , H04N21/234327 , H04N21/2362 , H04N21/2365 , H04N21/4345 , H04N21/631
Abstract: PURPOSE: A method of transmitting a signal, a device of transmitting a signal, a method of receiving a signal and a device of receiving a signal for a DMB(Digital Multimedia Broadcasting) service are provided to conveniently maintain the compatibility between DMB services which respectively use a single layer and multiple layers by signaling the connectivity among streams in a DMB service. CONSTITUTION: An SL(Sync Layer) packetizer(140) creates each SL packet through the reception of an improved layer elementary stream and a base layer elementary stream. A PES(Packetized Elementary Stream) packet device(160) converts the each SL packet into a PES. A first TS(Transport Stream) multiplexer(170) outputs a base layer transport stream through the multiplexing of the PES packet. A second TS multiplexer(171) outputs an improved layer TS through the multiplexing of the PES packet.
Abstract translation: 目的：提供发送信号的方法，发送信号的装置，接收信号的方法和接收DMB（数字多媒体广播）业务的信号的装置，以方便地维护分别在DMB业务之间的兼容性 通过信令DMB服务中的流之间的连接来使用单层和多层。 构成：SL（同步层）分组器（140）通过接收改进的层基本流和基本层基本流来创建每个SL分组。 PES（分组化基本流）分组设备（160）将每个SL分组转换成PES。 第一TS（传输流）复用器（170）通过PES分组的复用来输出基本层传输流。 第二TS多路复用器（171）通过PES分组的复用来输出改进的层TS。
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公开(公告)号：KR100964382B1
公开(公告)日：2010-06-17
申请号：KR1020080067448
申请日：2008-07-11
Applicant: 한국전자통신연구원
CPC classification number: H04L23/02 , H04H20/95 , H04L5/0016 , H04L5/0048 , H04L25/0226
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公开(公告)号：KR100933054B1
公开(公告)日：2009-12-21
申请号：KR1020070127004
申请日：2007-12-07
Applicant: 한국전자통신연구원
IPC: H04N21/63 , H04N21/238
Abstract: A method for transmitting and receiving a broadcasting signal is provided to request high efficient transmission while making compatibility with an existing digital broadcasting signal possible, thereby providing a high quality service. A video signal of a broadcasting signal is layered into a basic layer video elementary stream and an enhanced layer video elementary stream. The basic layer video elementary stream and the enhanced layer video elementary stream are packetized into a basic layer video packet and an enhanced layer video packet. A basic layer transmission stream is generated by multiplexing the basic layer video packet with a basic layer audio packet. The basic layer transmission stream and the enhanced layer video packet are transmitted.
Abstract translation: 提供一种用于发送和接收广播信号的方法，以便在与现有数字广播信号可能的兼容的同时请求高效率的传输，从而提供高质量的服务。 广播信号的视频信号被分层为基本层视频基本流和增强层视频基本流。 基本层视频基本流和增强层视频基本流被打包成基础层视频分组和增强层视频分组。 基本层传输流是通过将基本层视频包与基本层音频包复用而生成的。 基本层传输流和增强层视频分组被传输。
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44.发明授权직교주파수 분할 다중 전송 시스템에서 수신 신호의 채널등화 장치 및 방법, 및 이를 적용한 디엠비 수신장치 有权직교주파수분할다중전송시스템에서수신신호의채널등화장치및방법，및이를적용한디엠비수신장치
公开(公告)号：KR100930792B1
公开(公告)日：2009-12-09
申请号：KR1020070090977
申请日：2007-09-07
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for equalizing the reception channel in an OFDM(Orthogonal Frequency Division Multiplexing) transmission system and a DMB(Digital Multimedia Broadcasting) receiving apparatus applying the same are provided to improve the performance of mobile reception in a transmission system in which pilot signal is not used. A channel estimator(520) estimates channel as a symbol unit with the reference signal received from the standard signal creation part(550). A channel filtering part(530) removes the noises of the presumed channel value. A channel equalization part(540) equalizes the channel by using the estimation channel value. The channel estimator estimates the PRS(Phase Reference Symbol) of the received frame by the reference signal.
Abstract translation: 提供了一种用于在OFDM（正交频分复用）传输系统中均衡接收信道的设备和方法以及应用该设备和方法的DMB（数字多媒体广播）接收设备，以改善传输系统中的移动接收的性能，在该传输系统中， 信号未被使用。 信道估计器（520）将信道估计为具有从标准信号创建部分（550）接收的参考信号的符号单元。 信道滤波部分（530）去除推测信道值的噪声。 信道均衡部分（540）通过使用估计信道值来对信道进行均衡。 信道估计器通过参考信号估计接收帧的PRS（相位参考符号）。
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公开(公告)号：KR1020090122096A
公开(公告)日：2009-11-26
申请号：KR1020080067448
申请日：2008-07-11
Applicant: 한국전자통신연구원
CPC classification number: H04L23/02 , H04H20/95 , H04L5/0016 , H04L5/0048 , H04L25/0226
Abstract: PURPOSE: A transmitting/receiving method and device for a digital multimedia broadcasting is provided to offer high quality service in high speed movement by applying the OFDM-CDMA transmission technique to the digital multimedia broadcasting system. CONSTITUTION: The pilot signal is generated by mapping the transferred information with the orthogonal code(S610). The pilot signal is diffused to the frequency domain(S630). The expanded pilot signal is modulated and transmitted. The transferred information comprises the transmission parameter for demodulating the received signal by the receiving device. The pilot signal is reiterated and inserted in a plurality of subcarriers.
Abstract translation: 目的：提供一种用于数字多媒体广播的发送/接收方法和装置，通过将OFDM-CDMA传输技术应用于数字多媒体广播系统来提供高速移动中的高质量服务。 构成：通过用正交码映射传送的信息来生成导频信号（S610）。 导频信号扩散到频域（S630）。 扩展的导频信号被调制和传输。 所传输的信息包括用于由接收装置解调接收到的信号的传输参数。 导频信号被重复并插入到多个子载波中。
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Patent Agency Ranking
公开(公告)号：KR1020090060530A
公开(公告)日：2009-06-15
申请号：KR1020070127383
申请日：2007-12-10
Applicant: 한국전자통신연구원
IPC: H04N21/236
CPC classification number: H04H20/18 , H04H2201/40 , H04N21/234318 , H04N21/2383 , H04N21/4307 , H04N21/6437 , H04N21/64792 , H04N21/8547
Abstract: A high quality media data processing method in a DMB broadcasting system and an apparatus thereof for limiting the transmission band of the round wave digital multimedia broadcasting transport network are provided to simplify a system step and synchronize a video ES and a basic layer ES. A high quality media data processing unit comprises a base layer processing unit(201), an enhancement layer processing unit(203), and a synchronizer(205). The base layer processing unit encodes the channel by multiplexing the basic layer stream. The enhancement layer processing unit synchronizes the basic stream of the enhancement layer to the basic stream of the basic layer. The enhancement layer processing unit processes one or more transmission channel among a plurality of transmission channels in order to be transmitted. Synchronizer provides the synchronization information to the enhancement layer processing unit. The synchronization information synchronizes the elementary stream of the enhancement layer in the elementary stream of the base layer.
Abstract translation: 提供DMB广播系统中的高质量媒体数据处理方法及其用于限制圆形数字多媒体广播传输网络的传输频带的装置，以简化系统步骤并同步视频ES和基本层ES。 高质量媒体数据处理单元包括基本层处理单元（201），增强层处理单元（203）和同步器（205）。 基层处理单元通过多路复用基本层流对信道进行编码。 增强层处理单元将增强层的基本流与基本层的基本流同步。 增强层处理单元处理多个传输信道之中的一个或多个传输信道以便发送。 同步器向增强层处理单元提供同步信息。 同步信息使基础层的基本流中的增强层的基本流同步。
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公开(公告)号：KR100884381B1
公开(公告)日：2009-02-17
申请号：KR1020070042568
申请日：2007-05-02
Applicant: 한국전자통신연구원
Abstract: 본 발명은 이동통신 시스템에서 주파수 옵셋 추정 방법 및 장치에 관한 것이다. 본 발명은 수신 신호에 포함된 기준 심볼의 보호 구간 중 일부에 해당하는 제1 블록의 신호와 상기 수신 신호를 상관하여 제1 상관값을 계산하고, 상기 보호 구간 중 일부에 해당하는 제2 블록의 신호와 상기 수신 신호를 상관하여 제2 상관값을 계산한 후, 상기 제1 상관값을 시간 지연시키고, 상기 지연시킨 제1 상관값의 켤레 복소수와 상기 제2 상관값을 곱하고, 상기 곱한 값의 위상값을 상기 제1 블록과 상기 제2 블록의 시간 간격으로 나누어 주파수 옵셋을 추정한다.
OFDM, 지상파 DMB, 주파수 옵셋 추정, 동기-
公开(公告)号：KR100875935B1
公开(公告)日：2008-12-26
申请号：KR1020070067185
申请日：2007-07-04
Applicant: 한국전자통신연구원 , 부산대학교 산학협력단
IPC: H04J11/00
Abstract: A method and an apparatus for hierarchical modulation/demodulation in an OFDM(Orthogonal Frequency Division Multiplexing) system are provided to perform an in-phase demodulation by using a pilot which is transferred to a second layer. A hierarchical modulation apparatus in an OFDM system includes first and second encoders(110,120), a pilot insertion unit(130), and a hierarchical modulation unit(140). The first encoder encodes a first layer signal stream, which is a basic layer signal. The second encoder encodes a second layer signal stream which is an enhancement layer signal. The pilot insertion portion inserts a pilot signal for estimating a channel coefficient to an encoded second layer signal stream. The hierarchical modulation portion modulates the second layer signal stream, to which the pilot signal is inserted, and the encoded first layer signal stream, and combines the encoded signals with each other.
Abstract translation: 提供了用于OFDM（正交频分复用）系统中的分层调制/解调的方法和装置，以通过使用传送到第二层的导频来执行同相解调。 OFDM系统中的分层调制装置包括第一和第二编码器（110,120），导频插入单元（130）和分层调制单元（140）。 第一编码器对第一层信号流进行编码，该第一层信号流是基本层信号。 第二编码器对作为增强层信号的第二层信号流进行编码。 导频插入部分将用于估计信道系数的导频信号插入编码的第二层信号流。 分层调制部分对导频信号所插入的第二层信号流和编码的第一层信号流进行调制，并将编码信号彼此组合。
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49.发明公开파일럿의 삽입 및 파일럿의 특정 배치 패턴을 통하여ＯＦＤＭ 전송 시스템의 전송성능을 높이는 계층 변조 장치및 계층 변조 신호 송수신 장치 및 그 방법 无效用于OFDM传输系统中分层调制的引导和安排的装置和方法
公开(公告)号：KR1020080069495A
公开(公告)日：2008-07-28
申请号：KR1020070069804
申请日：2007-07-11
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3488 , H04H20/28 , H04H20/42 , H04H20/65 , H04L1/0057 , H04L1/0059 , H04L1/0065 , H04L1/007 , H04L5/0007 , H04L5/0048 , H04L5/005 , H04L27/183 , H04L27/2604 , H04L27/2613
Abstract: A hierarchical modulation apparatus for improving a transmission performance of an OFDM transmission system using the insertion and the specific arrangement pattern of a pilot, and a method thereof are provided to improve a receiving performance by additionally transmitting a pilot signal to an enhancement layer signal. A hierarchical modulation apparatus for improving a transmission performance of an OFDM transmission system using the insertion and the specific arrangement pattern of a pilot includes a first channel coding unit(200), a second channel coding unit(210), a pilot insertion unit(220), and a layer modulation unit(240). The first channel coding unit encodes a base layer signal column. The second channel coding unit encodes an enhancement signal column. The pilot insertion unit inserts a pilot into the enhancement signal column. The pilot has the correlation with the base layer signal column corresponding to the same sub carrier with the enhancement layer signal column which is encoded in the second channel coding unit. The layer modulation unit modulates and combines each of the signal columns outputted from the first channel coding unit and the pilot insertion unit.
Abstract translation: 提供了一种使用插入的OFDM传输系统和导频的特定布置模式来提高OFDM传输系统的传输性能的分级调制装置及其方法，用于通过向导频信号附加发送导频信号来提高接收性能。 使用插入的OFDM传输系统和导频的特定布置模式来提高OFDM传输系统的传输性能的分层调制装置包括：第一信道编码单元（200），第二信道编码单元（210），导频插入单元（220） ）和层调制单元（240）。 第一信道编码单元对基本层信号列进行编码。 第二信道编码单元对增强信号列进行编码。 导频插入单元将导频插入增强信号列。 导频与与第二信道编码单元中编码的增强层信号列对应的相同子载波的基本层信号列具有相关性。 层调制单元对从第一信道编码单元输出的信号列和导频插入单元进行调制和组合。
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公开(公告)号：KR1020080052085A
公开(公告)日：2008-06-11
申请号：KR1020060124121
申请日：2006-12-07
Applicant: 한국전자통신연구원 , 부산대학교 산학협력단
CPC classification number: H04L27/389 , H04L5/0007 , H04L25/0224 , H04L27/02 , H04L27/2071 , H04L27/2075 , H04L27/3483 , H04L27/361
Abstract: An apparatus and a method for applying amplitude-differential phase shift keying are provided to maintain compatibility of main transmission data to a pre-differential phase shift keying and to improve a transmitting speed by modulating the main transmission data with a differential phase shift keying manner and modulating additional transmission data with the other differential phase shift keying manner. An apparatus and a method for applying amplitude-differential phase shift keying includes a first modulating unit modulating a first data sequence with a differential phase shift keying manner. A second modulating unit modulates a second data sequence with an amplitude shift and inserts a pilot signal to the amplitude shift modulated signal. A multiplier outputs after multiplying output data of first and second modulating units. The pilot signal is periodically or non-periodically inserted at a position of a sub-carrier of the amplitude shift modulated signal. A first demodulating unit(31) receives an amplitude-differential phase shift keying modulated signal and demodulates the received signal with the differential phase shift keying. A second demodulating unit(324) extracts the pilot signal from the received signal.
Abstract translation: 提供了一种应用幅度相移键控的装置和方法，以保持主传输数据与预差分相移键控的兼容性，并通过以差分相移键控方式调制主传输数据来提高传输速度， 用其他差分相移键控方式调制附加传输数据。 一种用于施加幅度相移键控的装置和方法包括以差分相移键控方式调制第一数据序列的第一调制单元。 第二调制单元以幅度偏移来调制第二数据序列，并将导频信号插入到幅度调制信号中。 乘法器在乘以第一和第二调制单元的输出数据之后输出。 导频信号周期地或非周期地插入在幅度调制信号的子载波的位置。 第一解调单元（31）接收幅度 - 差分相移键控调制信号并用差分相移键控对接收信号进行解调。 第二解调单元（324）从接收到的信号中提取导频信号。
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