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1.发明公开APPARATUS AND METHOD FOR BIT MAPPING OF DIGITAL MODULATION SIGNAL 审中-公开DEVICE AND METHOD FOR数字调制信号的比特映射关系
公开(公告)号：EP2223488A1
公开(公告)日：2010-09-01
申请号：EP08859657.2
申请日：2008-10-06
申请人： Electronics and Telecommunications Research Institute , IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
发明人： CHANG, Dae-Ig , KIM, Jae-Hyun , YOON, Dong-Weon
IPC分类号： H04L27/18
CPC分类号： H04L27/3405
摘要： Provided is an apparatus and method for bit mapping of a digital modulation signal. The apparatus includes: mapping each bit on constellation of internal and external ring formats; and performing final mapping on bits on an external ring by shifting the bits.
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2.发明公开APPARATUS AND METHOD FOR INSERTING NETWORK CLOCK REFERENCE PACKET IN SATELLITE COMMUNICATION SYSTEM 审中-公开DEVICE AND METHOD FOR添加网络时钟参考分组卫星通信系统
公开(公告)号：EP2235870A1
公开(公告)日：2010-10-06
申请号：EP08793490.7
申请日：2008-08-26
发明人： HAN, Ki-Seop , CHANG, Dae-Ig , LEE, Ho-Jin
IPC分类号： H04L7/00
CPC分类号： H04B7/2125 , H04B7/18589 , H04W56/0075
摘要： Provided is an apparatus and method for inserting a network clock reference (NCR) packet for network synchronization in an interactive satellite communication system. The method includes selecting a predetermined type of a frame to which the NCR packet is to be inserted; if a timer value is equal to an arrival period of the NCR packet, inserting the NCR packet into a current frame; and if the timer value is smaller than the arrival period of the NCR packet and there is the selected frame among frames to be transmitted, inserting the NCR packet into the selected frame.
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3.发明授权APPARATUS AND METHOD OF SYNCHRONIZING FRAMES USING PHASE DIFFERENTIAL INFORMATION IN DVB TRANSMISSION SYSTEM 有权装置和方法用于同步FRAME BY使用相位差信息在DVB传输系统
公开(公告)号：EP2074736B1
公开(公告)日：2014-04-02
申请号：EP07808449.8
申请日：2007-09-21
发明人： KIM, Pan-Soo , KIM, Tae-Hoon , LEE, In-Ki , CHANG, Dae-Ig , OH, Deock-Gil , CORAZZA, Giovanni E. , PEDONE, Raffaella , VILLANTI, Marco
CPC分类号： H04L7/042 , H04L27/2656 , H04L27/2675
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4.发明公开APPARATUS AND METHOD OF SYNCHRONIZING FRAMES USING PHASE DIFFERENTIAL INFORMATION IN DVB TRANSMISSION SYSTEM 有权装置和方法用于同步FRAME BY使用相位差信息在DVB传输系统
公开(公告)号：EP2074736A1
公开(公告)日：2009-07-01
申请号：EP07808449.8
申请日：2007-09-21
发明人： KIM, Pan-Soo , KIM, Tae-Hoon , LEE, In-Ki , CHANG, Dae-Ig , OH, Deock-Gil , CORAZZA, Giovanni E. , PEDONE, Raffaella , VILLANTI, Marco
IPC分类号： H04L7/00
CPC分类号： H04L7/042 , H04L27/2656 , H04L27/2675
摘要： Provided are an apparatus and method for frame synchronization using phase differential information in a digital video broadcasting (DVB) transmission system. The apparatus includes a first correlator, a first comparator, and an acquisition controller. The first correlator calculates a first decision variable as correlation using phase differential information between a received symbol data sequence and start of frame (SOF) symbol sequences for frame synchronization in a SOF symbol duration. The first comparator compares the first decision variable with a predetermined first threshold value. The acquisition controller determines whether initial frame synchronization is archived or not according to the comparison result of the first comparison means and controlling the first correlation means to continuously operate until the initial frame synchronization is archived.
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