파일럿의 삽입 및 파일럿의 특정 배치 패턴을 통하여OFDM 전송 시스템의 전송성능을 높이는 계층 변조 장치및 계층 변조 신호 송수신 장치 및 그 방법

    公开(公告)号:KR1020080069495A

    公开(公告)日:2008-07-28

    申请号:KR1020070069804

    申请日:2007-07-11

    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。

    크기 차동 위상 편이 변조 장치 및 그 방법
    52.
    发明公开
    크기 차동 위상 편이 변조 장치 및 그 방법 无效
    差分相位移位键控器和方法

    公开(公告)号:KR1020080052085A

    公开(公告)日:2008-06-11

    申请号:KR1020060124121

    申请日:2006-12-07

    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。

    분산 중계 장치 및 그 방법
    53.
    发明公开
    분산 중계 장치 및 그 방법 有权
    分布式重复器的设备和方法

    公开(公告)号:KR1020080051446A

    公开(公告)日:2008-06-11

    申请号:KR1020060122516

    申请日:2006-12-05

    Abstract: Distributed repeaters and a repeating method thereof are provided to suppress a noise due to a transmission path between a main transmitter and the repeater and a multipath signal by using a high performance equalizer. An RF(Radio Frequency) receiver(402) receives an RF broadcasting signal from a main transmitter through a reception antenna(401). An IF down-converter(403) converts the RF broadcasting signal into an IF(Intermediate Frequency) signal. A demodulator(404) converts the IF signal from the IF down-converter to a baseband signal. An equalizer(405) equalizes the baseband signal and compensates for a distortion due to a transmission channel. An ID signal generating/inserting unit(406) generates an ID signal with a high correlation property and inserts the ID signal to the baseband signal. A modulator(407) converts the baseband signal into the IF signal. An RF up-converter(408) converts the baseband signal into an RF broadcasting signal. A high power amplifier(409) amplifies the RF broadcasting signal and transmits the amplified result using transmission antennas.

    Abstract translation: 提供分布式中继器及其重复方法以通过使用高性能均衡器来抑制由主发射机和中继器之间的传输路径引起的噪声和多径信号。 RF(射频)接收机(402)通过接收天线(401)从主发射机接收RF广播信号。 IF下变频器(403)将RF广播信号转换成IF(中频)信号。 解调器(404)将来自IF下变频器的IF信号转换为基带信号。 均衡器(405)对基带信号进行均衡,并补偿由于传输信道引起的失真。 ID信号生成/插入单元(406)生成具有高相关性的ID信号,并将该ID信号插入到基带信号中。 调制器(407)将基带信号转换成IF信号。 RF上变频器(408)将基带信号转换成RF广播信号。 高功率放大器(409)放大RF广播信号,并使用发送天线发送放大的结果。

    OFDM 전송 시스템의 계층 변복조 장치 및 방법
    54.
    发明公开
    OFDM 전송 시스템의 계층 변복조 장치 및 방법 失效
    正交频分复用系统中分层调制/解调的装置和方法

    公开(公告)号:KR1020080050236A

    公开(公告)日:2008-06-05

    申请号:KR1020070067185

    申请日:2007-07-04

    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: 提供了一种用于OFDM(正交频分复用)系统中的分级调制/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系统中的分级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)。 第一编码器编码作为基本层信号的第一层信号流。 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到编码的第二层信号流。 分级调制部分调制导频信号插入到其上的第二层信号流和编码的第一层信号流,并将编码信号相互组合。

    송신기 신호를 식별하기 위한 저간섭 확산 코드용 부분상관정합필터 및 필터링 방법
    55.
    发明公开
    송신기 신호를 식별하기 위한 저간섭 확산 코드용 부분상관정합필터 및 필터링 방법 有权
    使用干扰消除扩展码进行TXID的部分匹配滤波

    公开(公告)号:KR1020080018078A

    公开(公告)日:2008-02-27

    申请号:KR1020060125156

    申请日:2006-12-08

    CPC classification number: H04B1/7093 H04B1/7097

    Abstract: A partial correlation matched filter for TxID(Transmitter Identification) using an interference cancelled spreading code and a filtering method thereof are provided to deduce correlation characteristics within a short time by minimizing chip correlation operations of a correlation calculation part of a ZCD(Zero Correlation Duration) code having a long period used for watermarking in a receiving terminal, and reduce hardware volume and power consumption. A first shift register(22) shifts a transmitted spreading code. A ZCD code controller(21) outputs a switch signal in order to remove zero components among the spreading codes outputted from the first shift register. A component removing unit removes the zero components from the output of the first shift register through the switch signal of the ZCD code controller. A partial correlator(23) calculates a correlation value with a reference code after receiving the spreading code where the zero components are removed by the zero component removing unit.

    Abstract translation: 提供使用干扰抵消的扩展码的TxID(发射机识别)的部分相关匹配滤波器及其滤波方法,以通过使ZCD的相关计算部分(零相关持续时间)最小化码片相关运算来在短时间内推断相关特性, 具有用于在接收终端中进行水印处理的长周期的代码,并且减少硬件体积和功耗。 第一移位寄存器(22)移位发送的扩展码。 ZCD码控制器(21)输出开关信号,以便从第一移位寄存器输出的扩展码中去除零分量。 元件去除单元通过ZCD代码控制器的开关信号从第一移位寄存器的输出中除去零分量。 部分相关器(23)在接收到由零分量去除单元去除零分量的扩展码之后,用参考码计算相关值。

    단일 송신 방송 서비스를 위한 장치

    公开(公告)号:KR101710864B1

    公开(公告)日:2017-02-28

    申请号:KR1020100130609

    申请日:2010-12-20

    Abstract: 본발명은단일송신방송서비스를위한장치를개시한다. 상기단일송신방송서비스를위한장치는, 입력의서브채널들을분석하여서브채널분석정보를출력하고, 각서브채널의스트림을추출하여출력하는입력처리부와, 앙상블, 서비스, 서비스컴포넌트와서브채널을구성하며, 상기입력처리부로부터의서브채널분석정보를이용하여출력앙상블구성에선택된입력의서브채널스트림을출력앙상블의서브채널로구성하고, 상기출력앙상블구성에따라 MCI(multiplex configuration information) 및 SI(service information) 정보, 서브채널구성정보를생성하는다중화관리부와, 상기입력처리부로부터각 서브채널의스트림을수신하고, 상기다중화관리부로부터수신된서브채널구성정보와다중화설정정보(MCI)에따라출력앙상블구성에필요한서브채널스트림을출력하는서브채널관리부와, 상기서브채널관리부로부터수신한서브채널스트림을정해진설정에따라공통인터리브프레임들(Common Interleaved Frame: CIF)로구성하여각 전송프레임에필요한주 서비스채널(Main Service Channel: MSC)을생성하는 MSC 생성부와, 상기다중화관리부(203)로부터수신된 MCI 및 SI 정보에기초하여 FIC(fast information channel)를생성하여출력하는 FIC 생성부와, 상기 FIC 생성부에서생성된 FIC와상기 MSC 생성부에서생성된 MSC로전송프레임을구성하여출력하는전송프레임구성부와, 상기전송프레임구성부로부터전송프레임을수신하고, 전송프레임을위한 DMB 방송신호를생성하여송신하는 DMB 변조부를포함한다..

    OFDM 시스템에서의 송수신 방법 및 그 장치
    57.
    发明公开
    OFDM 시스템에서의 송수신 방법 및 그 장치 审中-实审
    OFDM系统中发送和接收信号的方法及装置

    公开(公告)号:KR1020150081993A

    公开(公告)日:2015-07-15

    申请号:KR1020140002055

    申请日:2014-01-07

    Abstract: OFDM(Orthogonal Frequency Division Multiplexing) 무선통신시스템에서, 송신하고자하는소스데이터에대한심볼신호를위상변조하고, 채널코딩된추가데이터와상기위상변조된신호를성상도매핑하여, 상기추가데이터와위상변조된신호를결합한전송신호를생성하여전송한다.

    Abstract translation: 正交频分复用(OFDM)无线通信系统本发明涉及一种正交频分复用(OFDM)无线通信系统,以便通过传输附加数据来提高传输速率,该附加数据对要发送的源数据对符号信号执行相位调制; 执行信道编码附加数据和相位调制信号的星座映射; 并通过将附加数据耦合到相位调制信号并发送发送信号来产生发送信号。

    데이터 변조시 데이터 추가가 가능한 데이터 송신 장치와 방법, 및 데이터 분리 복원 장치와 방법
    58.
    发明授权
    데이터 변조시 데이터 추가가 가능한 데이터 송신 장치와 방법, 및 데이터 분리 복원 장치와 방법 有权
    用于在数据调制时插入附加数据的数据传输装置和数据传输方法,以及用于单独处理数据的数据重构装置和数据重构方法

    公开(公告)号:KR101470592B1

    公开(公告)日:2014-12-10

    申请号:KR1020110046741

    申请日:2011-05-18

    Inventor: 임종수

    Abstract: 본발명은다중경로페이딩에강인한 OFDM 성질을만족함과동시에진폭이일정한특징을가지는 CE-OFDM 변조방식에추가로데이터를보내고자하는경우이에대한송수신장치및 방법에관한것이다. 추가로확보된정보채널을이용하여서비스채널정보, 물리계층의변조파라미터정보등을보낼수 있고, 이를활용하면서비스탐색시간절약및 수신기의전력도절감할수 있다.

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