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Patent Agency Ranking
公开(公告)号：KR1020140050187A
公开(公告)日：2014-04-29
申请号：KR1020120115994
申请日：2012-10-18
Applicant: 목포대학교산학협력단
CPC classification number: H03M13/1151 , H03M13/6522 , H04L1/1896
Abstract: The present invention comprises the steps of a base station transmitting data which has undergone Reed-Solomon coding to a relay station and a destination station; and the relay station transmitting the data received from the base station, to the destination station with a cross-layer coding scheme by using LDPC coding. According to the present invention, the method can improve transmission efficiency and reliability compared to performing communication using a general MIMO system.
Abstract translation: 本发明包括以下步骤：基站向中继站和目的站发送已经经历Reed-Solomon编码的数据; 并且中继站通过使用LDPC编码将从基站接收的数据发送到具有跨层编码方案的目的站。 根据本发明，与使用通用MIMO系统进行通信相比，该方法可以提高传输效率和可靠性。
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公开(公告)号：KR1020140044218A
公开(公告)日：2014-04-14
申请号：KR1020120110298
申请日：2012-10-04
Applicant: 목포대학교산학협력단
IPC: H04J11/00
CPC classification number: H04L25/0224
Abstract: The present invention relates to a method of estimating a frequency offset generated in an OFDM system. By using a maximum likelihood estimate theory in estimating frequency offset, estimate can be carried out in an irregular noise state and a wider estimate range compared to the estimate method according to an existing technique is provided. [Reference numerals] (AA) Start; (BB) End; (S100) Step of receiving a reception signal; (S110) Step of estimating a frequency offset by using equation 4
Abstract translation: 本发明涉及一种估计在OFDM系统中产生的频率偏移的方法。 通过在估计频率偏移中使用最大似然估计理论，可以提供与根据现有技术的估计方法相比较的不规则噪声状态和更宽估计范围的估计。 （附图标记）（AA）开始; （BB）结束; （S100）接收接收信号的步骤; （S110）使用式4估计频率偏移的步骤
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公开(公告)号：KR1020130139090A
公开(公告)日：2013-12-20
申请号：KR1020120062829
申请日：2012-06-12
Applicant: 목포대학교산학협력단
CPC classification number: H04B7/15521 , H04B7/15557
Abstract: A mixed relay transmission method of a superposition coding signal for reducing averaged distortion is disclosed. This method selectively transmits relay signals required for a destination node using a decoding result in the destination node and relay node, and selectively transmits a signal by coding relay signals with DF signals and AF signals which are generated according to the decoding result.
Abstract translation: 公开了一种用于减少平均失真的叠加编码信号的混合中继传输方法。 该方法使用目的地节点和中继节点中的解码结果选择性地发送目的地节点所需的中继信号，并且通过根据解码结果生成的DF信号和AF信号对中继信号进行编码来选择性地发送信号。
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公开(公告)号：KR1020140046707A
公开(公告)日：2014-04-21
申请号：KR1020120112555
申请日：2012-10-10
Applicant: 목포대학교산학협력단
CPC classification number: H04B7/0671 , H04B7/155 , H04L27/26
Abstract: In the present invention, disclosed is a method for multi-antenna relay transmission and reception for an OFDM system. The method for relay transmission and reception according to an aspect of the present invention, in which a source node transmits OFDM type data to a target node through a multi-antenna relay node, includes a step where the relay node digitally converts each of signals received by multiple antennas; a step of removing cyclic prefix with respect to each OFDM symbol of the digitally converted signal; a step of selecting the signal with the highest OFDM symbol power among antenna-specific reception signals from which the cyclic prefix is removed; a step of generating an antenna-specific transmission signal through amplification after cyclic delay of the selected signal with different cyclic delay values in respective antennas during the step of the selection; a step of adding the cyclic prefix to the antenna-specific transmission signal; and a step of converting the antenna-specific transmission signal with the added cyclic prefix into analog and transmitting the antenna-specific transmission signal. [Reference numerals] (210) Digital conversion unit; (220) Cyclic prefix removal unit; (230) Reception antenna selection and coupling unit; (240) Cyclic delay diversity signal generation unit; (250) Cyclic prefix insertion unit; (260) Analogue conversion unit
Abstract translation: 在本发明中，公开了一种用于OFDM系统的多天线中继发送和接收的方法。 根据本发明的一个方面的用于中继发送和接收的方法，其中源节点通过多天线中继节点将OFDM类型的数据发送到目标节点包括以下步骤：中继节点数字地转换接收的每个信号 通过多个天线; 删除关于数字转换信号的每个OFDM符号的循环前缀的步骤; 在除去循环前缀的天线专用接收信号中选择具有最高OFDM符号功率的信号的步骤; 在所述选择步骤期间，通过在相应天线中具有不同循环延迟值的所选信号的循环延迟之后通过放大产生天线特定发送信号的步骤; 将循环前缀添加到天线特定发送信号的步骤; 以及将具有添加的循环前缀的天线特定发送信号转换为模拟并发送天线专用发送信号的步骤。 （附图标记）（210）数字转换单元; （220）循环前缀删除单元; （230）接收天线选择和耦合单元; （240）循环延迟分集信号生成单元; （250）循环前缀插入单元; （260）模拟转换单元
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公开(公告)号：KR1020130139481A
公开(公告)日：2013-12-23
申请号：KR1020120062948
申请日：2012-06-13
Applicant: 목포대학교산학협력단
Abstract: The present invention relates to a technique for compressing data such as H.264, AAC. The present invention relates to a method for improving functions of H.264, AAC by using open source utilities (mp4creator, mp4info, and MP4Box) and an open source media server. [Reference numerals] (AA) Start;(BB) No;(CC) Yes;(DD) End;(S100) Client request (.mp4);(S110) Obtain mp4 file information by using mp4creator and mp4into;(S120) Does extracted stream file exist?;(S130) Extract individual streams by using the mp4creator and the MP4Box;(S140) Playback the streams individually by using a built-in Server Media Session;(S150) Server response (RTP stream)
Abstract translation: 本发明涉及一种压缩诸如H.264，AAC之类的数据的技术。 本发明涉及通过使用开源实用程序（mp4creator，mp4info和MP4Box）以及开源媒体服务器来改进H.264，AAC的功能的方法。 （AA）开始;（BB）否;（CC）是;（DD）结束;（S100）客户端请求（.mp4）;（S110）使用mp4creator和mp4into获取mp4文件信息;（S120） 提取的流文件是否存在？（S130）使用mp4creator和MP4Box提取个别流;（S140）使用内置的服务器媒体会话单独播放流;（S150）服务器响应（RTP流）
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