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公开(公告)号：KR1020090112190A
公开(公告)日：2009-10-28
申请号：KR1020080037929
申请日：2008-04-23
Applicant: 한국전자통신연구원 , 부산대학교 산학협력단
IPC: H04B7/15
CPC classification number: H04B7/15585 , H04B1/12 , H04B1/16
Abstract: PURPOSE: A method for removing a feedback signal of an on-channel repeater and an apparatus thereof are provided to suppress the feedback signal below a predetermined level by generating a replica to remove the feedback signal. CONSTITUTION: An on-channel repeater comprises the first replica generating unit(150), the second replica generating unit(160), the final replica generating unit(170), and the feedback signal removing unit(130). The first replica generating unit generates the first replica for the feedback signal. The second replica generating unit generates the second replica for the feedback signal. The feedback signal compensates the spectral distortion generated in the feedback removal.
Abstract translation: 目的：提供一种用于去除同信道中继器的反馈信号的方法及其装置，用于通过生成副本来消除反馈信号来将反馈信号抑制在预定电平以下。 构成：同频转发器包括第一副本生成单元（150），第二副本生成单元（160），最终副本生成单元（170）和反馈信号去除单元（130）。 第一副本生成单元生成反馈信号的第一副本。 第二副本生成单元生成反馈信号的第二副本。 反馈信号补偿在反馈消除中产生的频谱失真。
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公开(公告)号：KR1020090096399A
公开(公告)日：2009-09-10
申请号：KR1020090078805
申请日：2009-08-25
Applicant: 한국전자통신연구원
CPC classification number: H04H20/42 , H04H20/72 , H04H40/18 , H04H60/07 , H04L1/0003 , H04L1/0017 , H04L1/0041 , H04L1/0065 , H04L1/0071 , H04L1/04 , H04L2001/0093 , H04L2001/0098 , H04N21/2343 , H04N21/234327 , H04L1/0023
Abstract: A transmitting method, a transmitting apparatus, a receiving method and a receiving apparatus of a digital broadcasting signal are provided to divide a stream into a plurality of layers according to a characteristic of the stream, process each layer independently and dynamically allocate a frequency based on the processed signal. A single stream is divided by a predetermined stream unit. Importance of the divided stream unit is grasped. According to the grasped importance, the divided stream unit is allocated to a plurality of layers(S104). Encoding and mapping about a separate layer are performed(S105,S106). Resources about the separate layer are dynamically allocated based on a symbol number about the separate layer(S107,S108).
Abstract translation: 提供一种数字广播信号的发送方法，发送装置，接收方法和接收装置，以根据流的特性将流划分成多个层，独立地处理每一层，并基于 处理后的信号。 单个流被预定的流单元划分。 掌握分流单元的重要性。 根据所掌握的重要性，将划分的流单元分配给多个层（S104）。 执行关于单独层的编码和映射（S105，S106）。 关于单独层的资源基于关于单独层的符号数量动态地分配（S107，S108）。
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公开(公告)号：KR100909279B1
公开(公告)日：2009-07-27
申请号：KR1020070078919
申请日：2007-08-07
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2604 , H04L25/0224 , H04L27/2649
Abstract: 계층 복조 장치는 미리 알고 있는 심볼을 바탕으로 기준 심볼을 채널 추정하여 기준 심볼의 채널 추정 값을 생성하고, 기준 심볼의 채널 추정 값을 바탕으로 복수의 정보 심볼을 채널 추정하여 복수의 정보 심볼의 채널 추정 값을 생성하며, 복수의 정보 심볼의 채널 추정 값을 바탕으로 복수의 서비스 심볼을 채널 추정하여 복수의 서비스 심볼의 채널 추정 값을 생성한다. 그리고 기준 심볼의 채널 추정 값, 복수의 정보 심볼의 채널 추정 값, 및 복수의 서비스 심볼의 채널 추정 값을 바탕으로 신호를 채널 등화한 후 채널 등화된 신호를 계층 분리하여 제1 계층 변조 신호와 제2 계층 변조 신호를 생성한다. 이를 통해 기존의 시스템과 호환성을 유지하면서 기본 계층에는 영향을 주지 않고 추가 계층의 수신 성능을 향상시킬 수 있다.
OFDM, 파일럿, 복조, 채널 추정Abstract translation: 分层解调设备信道基于给定码元来估计参考码元以生成参考码元的信道估计，信道基于参考码元的信道估计估计多个信息码元以生成多个信息码元的信道估计 ，信道基于多个信息符号的信道估计来估计多个服务符号以生成多个服务符号的信道估计，基于参考符号的信道估计对信号进行信道均衡，多个信道估计 信息符号和多个服务符号的信道估计，并且分层地分离信道均衡信号以产生第一分层调制信号和第二分层调制信号; 调制信号。 因此，在保持与现有系统的兼容性的同时，可以在不影响高优先级信号的情况下提高低优先级信号的接收性能。
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公开(公告)号：KR1020090025575A
公开(公告)日：2009-03-11
申请号：KR1020070090534
申请日：2007-09-06
Applicant: 한국전자통신연구원
Abstract: An identification signal analyzing apparatus for compensating separation and attenuation of a channel profile and a method thereof are provided to more accurately analyze an identification signal. An identification signal generating unit(404) produces the same identification signal as an identification signal inserted by a transmission side apparatus. A partial correlation unit(405) calculates a correlation value between a receiving signal to/in which a promised identification signal is inserted/received by a transmission side apparatus and the identification signal generated by the identification signal generating unit through a partial correlation method. A correlation value compensation unit(406) compensates for separation and attenuation of the correlation value calculated with the partial correlation unit. A channel profile extracting unit(407) extracts a channel profile from the correlation value compensated by the correlation value compensation unit.
Abstract translation: 提供用于补偿信道简档的分离和衰减的识别信号分析装置及其方法，以更准确地分析识别信号。 识别信号生成单元（404）产生与由发送侧装置插入的识别信号相同的识别信号。 部分相关单元（405）通过部分相关方法计算由发送方装置插入/接收的承诺识别信号的接收信号与由识别信号生成单元生成的识别信号之间的相关值。 相关值补偿单元（406）补偿由部分相关单元计算的相关值的分离和衰减。 信道简档提取单元（407）从由相关值补偿单元补偿的相关值中提取信道分布。
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公开(公告)号：KR1020090014875A
公开(公告)日：2009-02-11
申请号：KR1020070079187
申请日：2007-08-07
Applicant: 한국전자통신연구원
IPC: H04N21/262 , H04N21/434
CPC classification number: H04N21/2662 , H04N21/235 , H04N21/4307 , H04N21/4331 , H04N21/435 , H04N21/631
Abstract: A digital broadcast transceiving apparatus and method are provided to transmit a sub program, synchronized with a main program which is transmitted in real time, in non-real time, thereby having compatibility on existing digital broadcasting and providing various and new premium services to a user. A main program stream converting unit(110) converts the contents of a main program into a stream. A sub program stream converting unit(120) converts the contents of a sub program into a stream. The sub program is subordinate to the main program and comprises one digital broadcasting service through synchronization with the main program. A program line-up information generator(130) generates program line-up information including the stream converting information of the main program and the stream converting information of the sub program. A sub transmitter(150) transmits the converted sub program stream in real time. A main transmitter(140) multiplexes the converted main program stream and the generated program line-up information and transmits the multiplexed stream and information in non-real time.
Abstract translation: 提供数字广播收发装置和方法来发送与实时发送的主节目同步的子节目，非实时发送，从而具有对现有数字广播的兼容性，并向用户提供各种和新的优质服务 。 主程序流转换单元（110）将主程序的内容转换为流。 子程序流转换单元（120）将子程序的内容转换成流。 子程序从属于主程序，包括通过与主程序同步的一个数字广播服务。 程序阵容信息生成器（130）生成包括主程序的流转换信息和子程序的流转换信息的程序排队信息。 副发射机（150）实时发射转换的子节目流。 主发射机（140）多路复用转换的主节目流和生成的节目排队信息，并以非实时的方式发送多路复用的流和信息。
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Patent Agency Ranking
公开(公告)号：KR1020090009410A
公开(公告)日：2009-01-23
申请号：KR1020070072636
申请日：2007-07-20
Applicant: 한국전자통신연구원
CPC classification number: H04B7/15585 , H04B1/525
Abstract: An identical channel relay apparatus and a method thereof for relaying output signal the same as input signal to the identical channel are provided to correct the channel distortion of the received signal by estimating the reverse of the receive channel from the signal removing feedback. A subtracting unit(803) subtracts replica of feedback signal from a converted signal by an RF receiver(802). A replica generating unit(804) produces the replica of feedback based on the signal which is downward transformed into the prescribed band by a down-converter(808) and the signal outputted from the subtracting unit. A reverse channel estimating unit(805) generates filter tap coefficient by estimating the reverse of the received channel. A first adaptive filtering unit(806) performs filtering by using the filter tap coefficient generated by the reverse channel estimating unit.
Abstract translation: 提供了相同的信道中继装置及其将与输入信号相同的输出信号中继到相同信道的方法，以通过从信号去除反馈估计接收信道的反向来校正接收信号的信道失真。 减法单元（803）通过RF接收器（802）从转换的信号中减去反馈信号的副本。 复制产生单元（804）基于通过下变频器（808）向下变换为规定频带的信号和从减法单元输出的信号产生反馈副本。 反向信道估计单元（805）通过估计接收信道的反向来产生滤波器抽头系数。 第一自适应滤波单元（806）通过使用由反向信道估计单元生成的滤波器抽头系数来执行滤波。
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公开(公告)号：KR100874016B1
公开(公告)日：2008-12-17
申请号：KR1020070065382
申请日：2007-06-29
Applicant: 한국전자통신연구원
IPC: H04L27/34
CPC classification number: H04L27/183 , H04L5/005 , H04L27/2601 , H04L27/3483 , H04L27/3488
Abstract: An apparatus and a method for hierarchical modulation and an apparatus and a method for hierarchical demodulation are provided to minimize the degradation of the reception performance due to the judgment error of a first hierarchical bit stream in a receiving unit. A first hierarchical symbol stream is generated by mapping a first hierarchical bit stream on a bit position of a first constellation according to the first modulation scheme(S210). A second hierarchical symbol stream is generated by mapping a second hierarchical bit stream on a bit position of a second constellation according to the second modulation scheme(S220). Each symbol of the second hierarchical symbol stream is phase-rotated(S230). The hierarchical modulation symbol stream is generated from the first hierarchical symbol stream and the second hierarchical symbol stream which is phase-rotated(S260).
Abstract translation: 提供了一种用于分层调制的装置和方法，以及用于分层解调的装置和方法，用于最小化由于接收单元中的第一分级比特流的判断误差而导致的接收性能的劣化。 通过根据第一调制方案映射第一星座图的比特位置上的第一分层比特流来生成第一分层符号流（S210）。 通过根据第二调制方案在第二星座图的比特位置映射第二分层比特流来生成第二分层符号流（S220）。 第二分层符号流的每个符号被相位旋转（S230）。 从第一分层符号流和相位旋转的第二分层符号流生成分级调制符号流（S260）。
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公开(公告)号：KR1020080106061A
公开(公告)日：2008-12-04
申请号：KR1020080050263
申请日：2008-05-29
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H04N21/434
CPC classification number: H04N21/23614 , H04N21/234309 , H04N21/23439 , H04N21/2365 , H04N21/2381 , H04N21/2383 , H04N21/242 , H04N21/4122 , H04N21/4126 , H04N21/41407 , H04N21/4347 , H04N21/4382 , H04N21/64315
Abstract: A transmission method, a transmitting device, a receiving method, a receiving device and a transmission frame structure of the digital broadcasting signal are provided to support various transmission modes in digital satellite broadcasting(DTV or DMB). A stream offering unit(100) converts a plurality of program service configuration elements into stream. A multiplexer(200) modulates the stream into the mode determined according to the transmission mode. A transmission frame generating unit(300) generates a transfer frame based on multiplexed information and stream information allocated to each sub channel according to the transmission mode. A frame header includes the transfer frame. A frame body includes data information about the service.
Abstract translation: 提供数字广播信号的发送方法，发送装置，接收方法，接收装置和发送帧结构，以支持数字卫星广播（DTV或DMB）中的各种传输模式。 流提供单元（100）将多个节目服务配置元素转换成流。 多路复用器（200）将流调制成根据传输模式确定的模式。 传输帧生成单元（300）根据传输模式，根据复用的信息和分配给每个子信道的流信息生成传送帧。 帧头包括传送帧。 帧体包括有关该服务的数据信息。
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公开(公告)号：KR1020080099553A
公开(公告)日：2008-11-13
申请号：KR1020070045235
申请日：2007-05-09
Applicant: 한국전자통신연구원
CPC classification number: H04B7/15585
Abstract: Co-channel relaying equipment and a method thereof are provided to increase the use efficiency of restricted frequency resources. Co-channel relaying equipment comprises the followings: a receiving means(802) receiving radio frequency signals; a subtraction means(803) subtracting the replica of a feedback signal from the signal received by the receiving means; a replica generation means(804) which produces a replica based on the signal subtracted by the subtraction means and feeds the replica back to the subtraction means; a reverse channel estimation means(805) which generates a filter tap coefficient by estimating the inverse of a reception channel based on the subtracted signal; the first adaptive filtering means(806) which compensates for the channel distortion of the subtracted signal by using the filter tap coefficient generated by the reverse channel estimation means; and a transmitting means(807) which converts the signal in which the channel distortion is compensated into a radio frequency signal, and then wirelessly transmit the converted signal.
Abstract translation: 提供同频中继设备及其方法，以提高受限频率资源的使用效率。 同频中继设备包括：接收射频信号的接收装置（802）; 减法装置，从接收装置接收的信号中减去反馈信号的副本; 复制产生装置（804），其基于由减法装置减去的信号产生副本，并将副本送回减法装置; 反向信道估计装置，用于通过基于所述减去的信号估计接收信道的反向产生滤波器抽头系数; 第一自适应滤波装置（806），其通过使用由反向信道估计装置产生的滤波器抽头系数来补偿减去的信号的信道失真; 以及发送装置（807），其将信道失真补偿的信号转换成射频信号，然后无线地发送转换后的信号。
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公开(公告)号：KR1020080095005A
公开(公告)日：2008-10-28
申请号：KR1020070039226
申请日：2007-04-23
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2656 , H04L7/0008 , H04L27/2278 , H04L27/2666
Abstract: A method and an apparatus for receiving a broadcasting signal through a digital multimedia broadcasting network are provided to improve sensitivity of an OFDM receiver by removing an IFFT(Inverse Fast Fourier Transform) unit in the OFDM(Orthogonal Frequency Division Multiplexing) receiver. An apparatus for receiving a broadcasting signal through a digital multimedia broadcasting network includes a correlation value generator(44), a frame synchronization estimator(45), a gain estimator(46), and a symbol timing offset unit(47). The correlation value generator correlates a synchronization signal, which is included in a time domain reception signal, with a reference signal, and generates a correlation value in the time domain. The frame synchronization estimator compares the time domain correlation value with a reference value. The gain estimator determines a gain based on the time domain correlation value. The symbol timing offset unit detects a sample index of the correlation value with the determined gain.
Abstract translation: 提供一种通过数字多媒体广播网络接收广播信号的方法和装置，通过去除OFDM（正交频分复用）接收机中的IFFT（Inverse Fast Fourier Transform，逆快速傅里叶变换）单元来提高OFDM接收机的灵敏度。 通过数字多媒体广播网络接收广播信号的装置包括相关值产生器（44），帧同步估计器（45），增益估计器（46）和符号定时偏移单元（47）。 相关值发生器将包括在时域接收信号中的同步信号与参考信号相关联，并在时域中生成相关值。 帧同步估计器将时域相关值与参考值进行比较。 增益估计器基于时域相关值确定增益。 符号定时偏移单元利用所确定的增益来检测相关值的采样索引。
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