公开(公告)号：US20140213207A1

公开(公告)日：2014-07-31

申请号：US14145131

申请日：2013-12-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ho Min EUM ,  Heung Mook KIM

IPC: H04B1/12

CPC classification number: H04B15/04 ,  G01S19/14

Abstract: The present invention provides a method and apparatus for compensating for a frequency offset. The apparatus for compensating for a frequency offset includes a signal processing unit configured to receive a first frequency signal from a GPS receiver, a local oscillator configured to transfer a second frequency signal to the GPS receiver so that the first frequency signal is generated, and a frequency offset compensation unit configured to receive frequency offset information, obtained when the first frequency signal is generated, from the GPS receiver and remove a frequency offset component of the local oscillator based on the frequency offset information.

Abstract translation: 本发明提供了一种用于补偿频偏的方法和装置。 用于补偿频率偏移的装置包括：信号处理单元，被配置为从GPS接收器接收第一频率信号;本地振荡器，被配置为将第二频率信号传送到GPS接收器，使得产生第一频率信号;以及 频率偏移补偿单元，被配置为从GPS接收器接收从第一频率信号生成时获得的频率偏移信息，并且基于频率偏移信息去除本地振荡器的频率偏移分量。

公开(公告)号：US20140157079A1

公开(公告)日：2014-06-05

申请号：US13906843

申请日：2013-05-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Ik PARK ,  Heung Mook KIM ,  Nam Ho HUR

IPC: H03M13/11

CPC classification number: H03M13/1185 ,  H03M13/1105 ,  H03M13/116 ,  H03M13/1165 ,  H03M13/1168 ,  H03M13/616 ,  H03M13/6552 ,  H03M13/6555 ,  H04L1/0041 ,  H04L1/0058

Abstract: Provided is an LDPC (Low Density Parity Check) code for terrestrial cloud broadcast. A method of encoding input information based on an LDPC (Low Density Parity Check) includes receiving information and encoding the input information with an LDPC codeword using a parity check matrix, wherein the parity check matrix may have a structure obtained by combining a first parity check matrix for an LDPC code having a higher code rate than a reference value with a second parity check matrix for an LDPC code having a lower code rate than the reference value.

Abstract translation: 提供了用于地面云广播的LDPC（低密度奇偶校验）码。 一种基于LDPC（Low Density Parity Check，低密度奇偶校验）的输入信息的编码方法包括使用奇偶校验矩阵以LDPC码字接收信息并对输入信息进行编码，其中奇偶校验矩阵可以具有通过组合第一奇偶校验 矩阵，用于具有比参考值更高的码率的LDPC码，具有用于具有比参考值更低的码率的LDPC码的第二奇偶校验矩阵。

公开(公告)号：US20130322369A1

公开(公告)日：2013-12-05

申请号：US13906030

申请日：2013-05-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Ik PARK ,  Heung Mook KIM ,  Nam Ho HUR ,  Jeong Chang KIM

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2647 ,  H04L27/2655

Abstract: A transmitting/receiving apparatus and method for separating multiple broadcast signals in a terrestrial cloud broadcast service are provided. A method of transmitting a terrestrial cloud broadcast signal by a terrestrial cloud broadcast signal transmitting apparatus may include generating the terrestrial cloud broadcast signal based on a frame structure for terrestrial cloud broadcast, the frame structure including a plurality of sub-frames, wherein a first sub-frame of the sub-frames includes two or more preamble symbols and transmitting the generated terrestrial cloud broadcast signal.

Abstract translation: 提供了一种用于分离地面云广播服务中的多个广播信号的发送/接收装置和方法。 通过地面云广播信号发送装置发送地面云广播信号的方法可以包括基于用于地面云广播的帧结构生成地面云广播信号，该帧结构包括多个子帧，其中第一子帧 子帧的帧包括两个或更多个前导码符号，并且发送生成的地面云广播信号。

公开(公告)号：US20130294220A1

公开(公告)日：2013-11-07

申请号：US13886943

申请日：2013-05-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jong Soo LIM ,  Sun Hyoung KWON ,  Heung Mook KIM ,  Namho HUR

IPC: H04L5/12

CPC classification number: H04L5/12 ,  H04L27/18 ,  H04L27/34

Abstract: A transmission apparatus couples a first phase modulation signal for first input data and a second phase modulation signal for second input data according to a first coupling method and transmits the coupled signal, and a reception apparatus receives the coupled signal. The reception apparatus derives a signal in which a first phase modulation signal and a second phase modulation signal are coupled according to a second coupling method from a received signal and separates the first phase modulation signal and the second phase modulation signal from the received signal based on the received signal and the derived signal. Furthermore, the reception apparatus obtains the first input data by demodulating the first phase modulation signal and obtains the second input data by demodulating the second phase modulation signal.

Abstract translation: 发送装置根据第一耦合方式将用于第一输入数据的第一相位调制信号和第二输入数据的第二相位调制信号进行耦合，并发送耦合信号，接收装置接收耦合信号。 接收装置根据接收到的信号，得出第一相位调制信号和第二相位调制信号根据第二耦合方式进行耦合的信号，并根据接收信号从接收信号中分离第一相位调制信号和第二相位调制信号 接收信号和导出信号。 此外，接收装置通过解调第一相位调制信号来获得第一输入数据，并通过解调第二相位调制信号来获得第二输入数据。

公开(公告)号：US20130235865A1

公开(公告)日：2013-09-12

申请号：US13654035

申请日：2012-10-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ho Min EUM ,  Heung Mook KIM

IPC: H04W56/00 ,  H04J3/06

CPC classification number: H04W56/00 ,  H04L7/041 ,  H04N21/2365

Abstract: An apparatus for transmitting data in a broadcasting system is provided. The apparatus comprises a basic broadcasting data encoder configured to encode basic broadcasting data streams to generate basic broadcasting signals; a synchronization unit configured to acquire synchronization information for synchronization between the basic broadcasting data streams and at least one additional data packet; an additional data multiplexing unit configured to input the synchronization information to each of the additional data packets and multiplex the additional data packets to which the synchronization information is input to generate additional data streams; an additional data encoder configured to encode the additional data streams to generate additional signals; an adding unit configured to generate mixed signals based on the basic broadcasting signals and the additional signals; a modulating unit configured to modulate the mixed signals to generate transmission signals; and a transmitting unit transmitting the transmission signals.

Abstract translation: 提供一种在广播系统中发送数据的装置。 该装置包括基本广播数据编码器，被配置为编码基本广播数据流以产生基本广播信号; 同步单元，被配置为获取用于基本广播数据流与至少一个附加数据分组之间的同步的同步信息; 附加数据复用单元，被配置为将同步信息输入到每个附加数据分组，并且多路复用输入同步信息的附加数据分组以产生附加数据流; 附加数据编码器被配置为对附加数据流进行编码以产生附加信号; 添加单元，被配置为基于所述基本广播信号和所述附加信号来生成混合信号; 调制单元，被配置为调制所述混合信号以产生发送信号; 以及发送单元，发送所述发送信号。