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1.发明授权System and method for synchronization between digital-to-analog converters (DACs) for high speed signal processing 有权用于高速信号处理的数模转换器（DAC）之间的同步系统和方法公开(公告)号：US09083379B2
公开(公告)日：2015-07-14
申请号：US14301753
申请日：2014-06-11
Inventor： Soo Yeob Jung , Pan Soo Kim , Joon Gyu Ryu , Deock Gil Oh
IPC: H03M1/66
CPC classification number: H03M1/662 , H03M1/0624 , H03M1/66
Abstract: Provided is a system and method for synchronization between digital-to-analog converters (DAC) for high speed signal processing. A synchronization method of a multi-DAC apparatus may include: inputting a clock to a multiplexer (MUX) DAC; dividing the clock into a first clock and a second clock; transferring a phase difference between the first clock and the second clock to a D flip-flop; and synchronizing the first clock and the second clock by processing the phase difference.
Abstract translation: 提供了用于高速信号处理的数模转换器（DAC）之间的同步的系统和方法。 多DAC装置的同步方法可以包括：将时钟输入到多路复用器（MUX）DAC; 将时钟分为第一时钟和第二时钟; 将第一时钟和第二时钟之间的相位差传送到D触发器; 以及通过处理所述相位差来同步所述第一时钟和所述第二时钟。
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2.发明授权Adaptive coding and modulation apparatus and method for forward link in satellite communication 有权卫星通信中前向链路的自适应编码和调制装置及方法公开(公告)号：US09025679B2
公开(公告)日：2015-05-05
申请号：US13972288
申请日：2013-08-21
Inventor： Joon Gyu Ryu , Do Huy Wang , Deock Gil Oh
CPC classification number: H04B7/18519 , H04L1/0003 , H04L1/0009 , H04L1/0015
Abstract: An adaptive coding and modulation (ACM) apparatus and method for a forward link in satellite communication is provided. The ACM apparatus may include a receiving unit to receive a signal-to-noise ratio (SNR) of a received signal, a determination unit to determine whether the SNR of the received signal is less than or equal to a threshold value, and a processing unit to execute a channel prediction algorithm when the SNR of the received signal is determined to be less than or equal to the threshold value.
Abstract translation: 提供了用于卫星通信中的前向链路的自适应编码和调制（ACM）装置和方法。 ACM装置可以包括：接收单元，用于接收接收信号的信噪比（SNR）;确定单元，用于确定接收信号的SNR是否小于或等于阈值;以及处理 当接收信号的SNR被确定为小于或等于阈值时执行信道预测算法的单元。
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3.发明授权Digital video broadcasting—satellite—second generation (DVB-S2) based transmission and reception apparatus and method operable in circumstances of low signal to noise ratio (SNR) 有权数字视频广播 - 基于卫星二代（DVB-S2）的发送和接收装置和方法可在低信噪比（SNR）的情况下操作，公开(公告)号：US09009762B2
公开(公告)日：2015-04-14
申请号：US14018361
申请日：2013-09-04
Inventor： Pan Soo Kim , Deock Gil Oh
IPC: H04N7/20 , H04N21/61 , H04L27/26 , H04N21/2383
CPC classification number: H04N21/6193 , H04L1/0003 , H04L1/0009 , H04L27/0008 , H04L27/2601 , H04L27/2602 , H04N21/2383
Abstract: Provided is a digital video broadcasting-satellite-second generation (DVB-S2) based transmission and reception apparatus and method operable in circumstances of a low signal to noise ratio (SNR), the DVB-S2 based transmission and reception apparatus including a DVB-S2 based transmitter, a mapping unit to determine bit mapping based on at least one of a state of a transmission channel and an area to be applied, and a physical layer frame (PLframe) replica processing unit to repeat a PLframe in which a physical layer header (PLheader) corresponding to a spreading factor (SF) is inserted.
Abstract translation: 提供了一种基于数字视频广播 - 卫星二代（DVB-S2）的发送和接收装置和方法，其在低信噪比（SNR）的情况下可操作，基于DVB-S2的发送和接收装置包括DVB- 基于S2的发射机，基于传输信道的状态和要应用的区域中的至少一个来确定比特映射的映射单元和物理层帧（PLframe）复制处理单元，以重复其中物理层 插入与扩展因子（SF）对应的标题（PLheader）。
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公开(公告)号：US10411790B2
公开(公告)日：2019-09-10
申请号：US15726006
申请日：2017-10-05
Inventor： Hyun Ha Hong , Mankyu Park , Deock Gil Oh , Joon Gyu Ryu , Dae Ig Chang
Abstract: Disclosed is a star network/mesh network accessing method and apparatus of a terminal in a satellite communication system, the method including receiving time slot resources from a central station and operating in a time division multiple access (TDMA) start network communication mode between the central station and a terminal, transferring, to the central station, a TDMA mesh network connection request message for a destination terminal, receiving traffic burst time plan (TBTP) information corresponding to the TDMA mesh network connection request message from the central station and operating in a TDMA mesh network communication mode between terminals, and switching from the TDMA mesh network communication mode between the terminals to a single channel per carrier (SCPC) mesh network communication mode between the terminals when Voice over Internet Protocol (VoIP) traffic is greater than a threshold.
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5.发明申请MULTILEVEL SATELLITE BROADCASTING SYSTEM FOR PROVIDING HIERARCHICAL SATELLITE BROADCASTING AND OPERATION METHOD OF THE SAME 审中-公开用于提供分层卫星广播的多平台卫星广播系统及其操作方法公开(公告)号：US20140245361A1
公开(公告)日：2014-08-28
申请号：US14188823
申请日：2014-02-25
Inventor： Jun Gil JEON , Joon Gyu Ryu , Min Su Shin , Deock Gil Oh
CPC classification number: H04N5/4401 , H04H40/90 , H04N19/30 , H04N21/234327 , H04N21/42607 , H04N21/44209 , H04N21/6143
Abstract: Provided is a multilevel satellite broadcasting system for providing a hierarchical satellite broadcasting, including a demodulator to demodulate a transmitted multilevel compression stream based on a modulation parameter, a hierarchical video decoder to receive the demodulated multilevel compression stream, and a channel predicting and controlling unit to process at least one of channel prediction and channel control with respect to the demodulated multilevel compression stream based on channel information of the demodulator.
Abstract translation: 提供了一种用于提供分级卫星广播的多级卫星广播系统，包括：解调器，用于基于调制参数解调发送的多级压缩流;分层视频解码器，用于接收解调的多级压缩流;以及信道预测和控制单元， 基于解调器的信道信息处理关于解调的多级压缩流的信道预测和信道控制中的至少一个。
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Patent Agency Ranking
6.发明授权Modulation and demodulation method for satellite communication using widespread signal-to-noise ratio (SNR) 有权使用广泛的信噪比（SNR）的卫星通信调制解调方法公开(公告)号：US09025639B2
公开(公告)日：2015-05-05
申请号：US13754436
申请日：2013-01-30
Inventor： Pan Soo Kim , Deock Gil Oh
IPC: H04B1/00 , H04B1/7097 , H04N21/2383 , H04N21/438 , H04L1/00 , H04L1/08
CPC classification number: H04B1/7097 , H04L1/0079 , H04L1/08 , H04N21/2383 , H04N21/4382
Abstract: Provided are a modulation method and a demodulation method for satellite communication using a widespread signal-to-noise ratio (SNR), the method including: adding a dummy frame to a broadcasting/communication signal frame for signal transmission of a digital video broadcasting-satellite second generation (DVB-S2) modulator; verifying a spreading factor; adding the same physical layer header to the broadcasting/communication signal frame to which the dummy frame is added, repeatedly the number of times corresponding to the verified spreading factor; and repeating the same data, for example, PL frame data as the physical layer header.
Abstract translation: 提供了一种使用广泛的信噪比（SNR）的卫星通信的调制方法和解调方法，该方法包括：将伪帧添加到广播/通信信号帧中，用于信号传输数字视频广播卫星 第二代（DVB-S2）调制器; 验证扩展因子; 将相同的物理层报头添加到添加了伪帧的广播/通信信号帧中，重复与验证的扩展因子相对应的次数; 并且重复相同的数据，例如作为物理层报头的PL帧数据。
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公开(公告)号：US10911133B2
公开(公告)日：2021-02-02
申请号：US16181149
申请日：2018-11-05
Inventor： Jonggyu Oh , Pansoo Kim , Deock Gil Oh , Joon Gyu Ryu , Soo Yeob Jung
Abstract: Disclosed is a communication method performed between a satellite and a ground station and apparatuses performing the communication method. The communication method includes transmitting a plurality of frames based on a beam allocation time schedule (BATS) between a satellite and a ground station, and synchronizing the BATS based on a reception time and a detection time of one or more frames among the plurality of frames to be received through a beam open window (BOW) allocated to the ground station.
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公开(公告)号：US10536188B2
公开(公告)日：2020-01-14
申请号：US15453666
申请日：2017-03-08
Inventor： Pansoo Kim , Deock Gil Oh , Xavier Giraud
Abstract: A signal processing method, and a transmitter and a receiver are disclosed. The signal processing method may include converting a transmission signal to a non-periodic sequence type transmission signal using periodic sequences and transmitting the non-periodic sequence type transmission signal to the receiver, in which the receiver may detect a burst from the received non-periodic sequence type transmission signal.
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公开(公告)号：US10057869B2
公开(公告)日：2018-08-21
申请号：US15815259
申请日：2017-11-16
Inventor： Joon Gyu Ryu , Soo Yeob Jung , Deock Gil Oh , Jonggyu Oh
CPC classification number: H04W56/004 , H04W84/06
Abstract: Disclosed is a network synchronization apparatus and method of a time division multiple access (TDMA)-based mesh network satellite communication system, the network synchronization method of a terminal in a satellite communication system including receiving timing error information from a central station, generating a mesh superframe start time (SST′) by reversing a sign of the timing error information, and receiving traffic information transmitted by a transmission terminal using the mesh SST′.
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10.发明授权Signal receiving apparatus based on faster than nyquist and signal decoding method thereof 有权信号接收设备基于比奈奎斯特快和信号解码方法公开(公告)号：US09559873B2
公开(公告)日：2017-01-31
申请号：US14617087
申请日：2015-02-09
Inventor： In Ki Lee , Min Hyuk Kim , Deock Gil Oh , Ji Won Jung
IPC: H04N21/2315 , H04L25/03 , H04L25/08 , H04L1/00
CPC classification number: H04L25/03 , H04L1/005 , H04L1/0057 , H04L1/0071 , H04L25/03318
Abstract: Disclosed are a signal receiving apparatus based on FTN and a signal decoding method thereof, and the apparatus includes: an equalizer calculating, when a signal sampled by Fast to Nyquist (FTN) is received on a communication channel, a posterior probability of information bits and calculating a log likelihood ratio by using the calculated posterior probability; a deinterleaver deinterleaving bit data output from the equalizer; a decoder correcting of signal interference of the data bits deinterleaved by the deinterleaver by using the LLR and decoding the corrected signal interference; and an interleaver interleaving data output from the decoder to provide the interleaved data to the equalizer.
Abstract translation: 公开了一种基于FTN的信号接收装置及其信号解码方法，该装置包括：均衡器，当在通信信道上接收到通过快速到奈奎斯特（FTN）采样的信号时，计算信息比特的后验概率， 通过使用计算的后验概率计算对数似然比; 解交织器对来自均衡器的比特数据进行解交织; 通过使用LLR对由解交织器解交错的数据位的信号干扰进行校正的解码器，对解调后的信号干扰进行解码; 交织器交织从解码器输出的数据，以将间隔的数据提供给均衡器。
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