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公开(公告)号：KR100849493B1
公开(公告)日：2008-07-31
申请号：KR1020060125142
申请日：2006-12-08
Applicant: 한국전자통신연구원
CPC classification number: H04L27/28
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 무선통신 시스템에서의 선형 또는 비선형 평균을 이용한 채널 추정 장치 및 그 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 파일럿 신호가 삽입되어 전송된 OFDM 신호로부터 송신기와 수신기 간의 전송로에 의해 야기된 채널을 추정하고, 추정된 채널에 존재하는 잡음성분과 깊은 널(null)에 의한 잡음 증폭현상으로 인한 등화기(equalizer) 성능 열화를 감소시키기 위해 추정된 채널을 선형 또는 비선형 평균하는, 채널 추정 장치 및 그 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 무선통신 시스템에서의 채널 추정 장치에 있어서, 파일럿 신호가 삽입되어 전송된 반송파 신호로부터 송신기와 수신기 간의 전송로(channel)에 의해 야기된 채널을 파일럿 신호의 배열 형식에 따라 추정하여 채널계수를 추정하기 위한 채널 추정 수단; 및 상기 추정된 채널계수를 선형 또는 비선형 평균하여 채널에 존재하는 잡음성분과 깊은 널에 의한 잡음 증폭현상으로 인한 등화기 성능 열화를 감소시키기 위한 선형 또는 비선형 평균 수단을 포함함.
4. 발명의 중요한 용도
본 발명은 무선통신 시스템 등에 이용됨.
OFDM, 선형 또는 비선형 평균, 채널 추정, 가중이동평균, 단순이동평균-
公开(公告)号：KR1020080053166A
公开(公告)日：2008-06-12
申请号：KR1020070082658
申请日：2007-08-17
Applicant: 한국전자통신연구원
IPC: H04N7/015
CPC classification number: H04L25/03343 , H04H20/72 , H04L2025/03382
Abstract: An apparatus for reverse path compensation using a tone signal in a digital broadcasting system, and a method thereof are provided to predict size and phase distortion in a transmission band generated in a reverse path for transferring signals, coupled in channel filter output, to a VBS demodulator in the VBS(Versatile Side Band) transmitter and repeater of the terrestrial digital broadcasting system by using the tone signal to compensate the reverse path, thereby improving the performance of a preequalizer. A reference signal generator(207) generates a reference RF(Radio Frequency) signal. A reverse path prediction unit(213) predicts transmission band property information about a reverse path based on the reference RF signal. A reverse path compensation unit(214) compensates a demodulation signal transferred through the reverse path on the basis of the transmission band property information about the predicted reverse path. A first switching unit(208) selects one of an RF signal, the output signal of a channel filter of a transmitting terminal, and the reference RF signal according to a switching control signal and outputs the selected signal to the reverse path. A second switching unit(211) selects one of a demodulator and the reverse path prediction unit and outputs a digital IF(Intermediate Frequency) signal transferred through the reverse path to the selected one according to the switch control signal.
Abstract translation: 提供一种使用数字广播系统中的音调信号进行反向路径补偿的装置及其方法，用于预测在反向路径中产生的传输频带中的大小和相位失真，用于将信道滤波器输出耦合到VBS的信号 解调器在地面数字广播系统的VBS（通用边带）发射机和中继器中，通过使用音调信号来补偿反向路径，从而提高了预均衡器的性能。 参考信号发生器（207）产生参考RF（射频）信号。 反向路径预测单元（213）基于参考RF信号预测关于反向路径的传输频带属性信息。 反向路径补偿单元（214）根据关于预测的反向路径的传输频带属性信息来补偿通过反向路径传送的解调信号。 第一切换单元（208）根据切换控制信号选择RF信号，发送终端的信道滤波器的输出信号和参考RF信号中的一个，并将选择的信号输出到反向路径。 第二切换单元（211）选择解调器和反向路径预测单元之一，并根据开关控制信号将通过反向路径传送的数字IF（中频）信号输出到所选择的数字IF。
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公开(公告)号：KR1020080052459A
公开(公告)日：2008-06-11
申请号：KR1020070125885
申请日：2007-12-06
Applicant: 한국전자통신연구원
CPC classification number: H03M13/1515 , H03M13/1102 , H03M13/152 , H03M13/23 , H03M13/2732 , H03M13/2957 , H03M13/6368 , H04H20/28 , H04H20/44 , H04H20/95 , H04H40/18 , H04L27/183 , H04L27/3488 , H04L2001/0093 , H04N21/2362 , H04N21/2368 , H04N21/2383 , H04N21/2662 , H04N21/4382 , H04N21/64792
Abstract: An apparatus and a method of servicing digital multimedia broadcasting are provided to transmit the multimedia data and additional data of high quality and high transmitting efficiency. An apparatus of servicing digital multimedia broadcasting includes a base layer transmitting processor(307), an enhancement layer transmitting processor(305), and a layer transmitting unit. The base layer transmitting processor encodes the base layer stream. The enhancement layer transmitting processor encodes the enhancement layer stream. The layer transmitting unit encodes the base layer stream which is output from the base layer transmitting processor and the enhancement layer stream which is output from the enhancement layer transmitting processor and allots a predetermined bit value so as to proceed a layer symbol mapping to transmit it.
Abstract translation: 提供了一种维修数字多媒体广播的设备和方法，用于传输多媒体数据和高质量和高传输效率的附加数据。 维修数字多媒体广播的装置包括基层发送处理器（307），增强层发送处理器（305）和层发送单元。 基层发送处理器对基本层流进行编码。 增强层发送处理器对增强层流进行编码。 层发送单元对从基础层发送处理器输出的基本层流和从增强层发送处理器输出的增强层流进行编码，并分配预定的位值，以进行层符号映射以进行发送。
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公开(公告)号：KR1020080051737A
公开(公告)日：2008-06-11
申请号：KR1020060123330
申请日：2006-12-06
Applicant: 한국전자통신연구원
Abstract: A backward data transmitting method using a data transmission network in a broadcasting system and a backward data transmission managing method are provided to construct a data transmission network between terminals, thereby increasing the channel amount without a separate relay device. When direct transmission from a terminal to a base station fails, the terminal broadcasts the data packet to the base station or adjacent other terminals. When the adjacent terminal receives the broadcasted data packet(411), the terminal confirms the ID of the received data packet and discriminates whether the received data packet is the packet successively transmitted to the base station(412). When the received data packet is the packet previously transmitted to the base station, the received transmission data packet is discarded(413) and the adjacent terminal waits for the new transmission data packet. When the received data packet is not transmitted to the base station, the adjacent terminal broadcasts the received data packet to the base station or the adjacent other terminals(414).
Abstract translation: 提供了一种在广播系统中使用数据传输网络的反向数据传输方法和反向数据传输管理方法，以在终端之间构建数据传输网络，从而在没有单独的中继设备的情况下增加信道量。 当从终端到基站的直接传输失败时，终端向基站或其他终端广播数据分组。 当相邻终端接收广播数据包（411）时，终端确认接收到的数据包的ID，并判别接收到的数据包是否是连续发送给基站的包（412）。 当接收到的数据分组是先前发送到基站的分组时，丢弃所接收的传输数据分组（413），并且相邻的终端等待新的传输数据分组。 当接收到的数据分组未发送到基站时，相邻终端将接收的数据分组广播到基站或相邻的其他终端（414）。
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公开(公告)号：KR1020080042644A
公开(公告)日：2008-05-15
申请号：KR1020060125142
申请日：2006-12-08
Applicant: 한국전자통신연구원
CPC classification number: H04L27/28 , H04L27/2675 , H04L25/0224 , H04L27/01
Abstract: An apparatus and a method of channel estimation using a linear or non-linear average in a wireless telecommunication system are provided to reduce degradation in performance of an equalizer due to a noise component and a deep null in an estimated channel. An apparatus of channel estimation using a linear or non-linear average in a wireless telecommunication system includes a channel estimating device(81) for estimating a channel coefficient by estimating a channel created by a transmission channel between a transmitter and a receiver from a carrier signal with a pilot signal inserted into the carrier signal according to an arrangement pattern of the pilot signal and a linear or non-linear averaging device(82) for reducing degradation in performance of an equalizer caused by noise amplification due to a noise component and a deep null in the channel by linear or non-linear averaging the estimated channel coefficient.
Abstract translation: 提供了一种在无线电信系统中使用线性或非线性平均的信道估计的装置和方法，以减少由于估计信道中的噪声分量和深空而引起的均衡器的性能劣化。 在无线电信系统中使用线性或非线性平均的信道估计装置包括信道估计装置（81），用于通过从载波信号估计由发射机和接收机之间的传输信道产生的信道来估计信道系数 根据导频信号的布置模式将导频信号插入到载波信号中;以及线性或非线性平均装置（82），用于减少由噪声分量和深度引起的噪声放大引起的均衡器性能的降低 通过线性或非线性平均估计的信道系数在信道中为零。
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Patent Agency Ranking146.发明授权방송 시스템에서 상조형 전송 방식을 이용한 역방향 데이터 전송 방법과 그를 위한 역방향 데이터 전송 관리 방법 有权使用广播系统中的合作传输方案返回数据传输的方法以及返回数据传输的管理方法
公开(公告)号：KR100826518B1
公开(公告)日：2008-04-30
申请号：KR1020060123986
申请日：2006-12-07
Applicant: 한국전자통신연구원
IPC: H04N21/25
CPC classification number: H04B7/024 , H04B7/0413 , H04B7/0617 , H04L1/0606 , H04L1/0618
Abstract: A method for transmitting reverse data by using a cooperative transmission scheme in a broadcasting system, and a method for managing the reverse data transmission therefor are provided to perform the reverse data transmission through the cooperative transmission scheme based on mutual cooperation between at least two terminals in a terrestrial broadcasting system, thereby improving reverse channel transmission capability, channel capacity, and service coverage without the installation of a separate repeater. A method for managing reverse data transmission using a cooperative transmission scheme in a BS(Base Station) comprises the following steps of: notifying a broadcasting receiving terminal that the broadcasting receiving terminal transmits reverse data by applying a determined cooperative transmission scheme, wherein the broadcasting receiving terminal determines that the cooperative transmission scheme is suitable to the transmission of reverse data out of broadcasting receiving terminals in the service area of the BS(300); receiving information about adjacent terminals to form a cooperative relation from the broadcasting receiving terminal(302); allocating frequency resources for a use in the cooperative transmission scheme to the adjacent terminals forming the cooperative relation(303); and receiving the reverse data from the broadcasting receiving terminal and the adjacent terminals forming the cooperative relation to restore the optimal reverse data(305).
Abstract translation: 一种用于在广播系统中使用协作传输方案发送反向数据的方法，以及用于管理其反向数据传输的方法，用于通过协作传输方案基于至少两个终端之间的相互协作来执行反向数据传输 地面广播系统，从而提高反向信道传输能力，信道容量和服务覆盖，而无需安装单独的中继器。 一种用于在BS（基站）中使用协作传输方案管理反向数据传输的方法包括以下步骤：通过应用确定的协作传输方案来向广播接收终端通知广播接收终端发送反向数据，其中广播接收 终端确定协作传输方案适合于在BS（300）的服务区域中的广播接收终端的反向数据的传输; 接收关于相邻终端的信息以从广播接收终端（302）形成协作关系; 将协作传输方案中使用的频率资源分配给形成协作关系的相邻终端（303）; 以及从广播接收终端和形成协作关系的相邻终端接收反向数据以恢复最佳反向数据（305）。
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公开(公告)号：KR100816500B1
公开(公告)日：2008-03-24
申请号：KR1020060111422
申请日：2006-11-13
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H03M7/30
CPC classification number: H04B7/02 , H04H2201/11 , H04L25/0202 , H04L25/03006
Abstract: A digital broadcast transmitting/receiving device is provided to improve a broadcasting receiving performance and increase service coverage within the same service area, by applying multiple transmission antennas, and space-time encoding, space-frequency encoding, or space-time-frequency encoding to a digital broadcast system. An encoding unit(110) generates a plurality of encoded symbol lines by applying encoding to an original symbol line. A first antenna(150) adds one of the encoded symbol lines to a data signal, and then transmits the data signal. At least one additive antenna(160) transmits the rest of the encoded symbol lines. A transmission power controller(130) controls the transmission power of the first antenna and the additive antenna.
Abstract translation: 提供一种数字广播发送/接收装置，通过应用多个发送天线，空间编码，空时编码或时空编码来提高广播接收性能并增加同一业务区内的业务覆盖。 数字广播系统。 编码单元（110）通过对原始符号线应用编码来生成多个编码符号线。 第一天线（150）将编码符号线之一加到数据信号上，然后发送数据信号。 至少一个加法天线（160）传送其余的编码符号线。 发射功率控制器（130）控制第一天线和添加天线的发射功率。
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公开(公告)号：KR101867612B1
公开(公告)日：2018-06-14
申请号：KR1020110117005
申请日：2011-11-10
Applicant: 한국전자통신연구원
Inventor： 임종수
IPC: H04L27/26
CPC classification number: H04L27/262 , H04L27/2624
Abstract: 데이터송신장치는데이터수신장치에서채널추정에사용할복수의파일럿신호를생성하고, 복수의입력데이터신호와복수의파일럿신호를심볼매핑하여복수의데이터심볼과복수의파일럿심볼을생성하며, 복수의데이터심볼과복수의파일럿심볼을포함하는주파수영역의입력심볼을주파수영역에서시간영역의실수신호로변환한후 각변조한다. 그리고데이터송신장치는제어신호에따라가변되는이득으로각변조된실수신호에대한사인신호의크기를제어한후 송신한다.
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公开(公告)号：KR101779066B1
公开(公告)日：2017-09-18
申请号：KR1020100129854
申请日：2010-12-17
Applicant: 한국전자통신연구원
IPC: H04N5/445 , H04N5/44 , H04N21/488
Abstract: 본발명에따른방송수신장치는, 입력된방송신호로부터화면정보및 음성정보를추출하는기저대역변환기; 상기추출된화면정보로부터문자정보를분리하고, 상기분리된문자정보를무선통신을통하여송신하는로컬무선방송기; 상기추출된화면정보를디스플레이시키는디스플레이장치; 및상기추출된음성정보를아날로그신호로출력하는스피커장치를포함한다. 본발명에따른방송수신장치는동일한방송채널의동일한화면을보면서도개인별로다른자막을서비스할수 있다.
Abstract translation: 根据本发明的广播接收设备包括：基带转换器，用于从输入广播信号中提取屏幕信息和音频信息; 本地无线广播器，用于从提取的屏幕信息中分离字符信息并通过无线通信发送分离的字符信息; 一种显示装置，用于显示提取的屏幕信息; 以及用于输出提取的语音信息作为模拟信号的扬声器装置。 根据本发明的广播接收设备可以在观看同一广播频道的同一屏幕的同时提供不同的字幕。
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