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公开(公告)号：KR1020010063792A
公开(公告)日：2001-07-09
申请号：KR1019990061886
申请日：1999-12-24
Applicant: 한국전자통신연구원
IPC: H01Q15/00
Abstract: PURPOSE: An active phased array antenna system for a mobile satellite communication and a beam control method for satellite tracking are provided to track a satellite at a high speed, achieve a high gain and employ a wider electronic tracking range. CONSTITUTION: A receiving channel signal beam forming unit passes a plurality of channels through a phase shifter and combines signals. A tracking signal beam forming unit makes plural channel receiving signals into four groups and passes the same through the phase shifter to combine the signals. A tracking signal detecting unit detects size of the signal formed by the tracking signal beam forming unit. A phase tracking processing unit calculates a phase pointing error relative to the beams of the tracking signals based on signal strength detected by the tacking signal detecting unit and calculates a phase pointing error with respect to the receiving channel signal beams and the transmission signal beams. A tracking beam control unit calculates a phase variation value from the satellite pointing error of the tracking signal beams and controls a phase value of the phase shifter inside the receiving active phased array antenna. A receiving channel beam control unit calculates a phase variation value from the satellite pointing error of the receiving channel signal beams and controls the phase value of the phase shifter inside the receiving channel signal beam forming unit. A transmitting beam control unit calculates a phase variation from the satellite pointing error of the transmission signal beams and controls the phase value of the phase shifter inside the transmitting active phased array antenna.
Abstract translation: 目的：提供用于移动卫星通信的有源相控阵天线系统和用于卫星跟踪的波束控制方法，以高速跟踪卫星，实现高增益并采用更广泛的电子跟踪范围。 构成：接收信道信号波束形成单元使多个信道通过移相器并组合信号。 跟踪信号波束形成单元将多个信道接收信号分成四组并将其通过移相器以组合信号。 跟踪信号检测单元检测由跟踪信号波束形成单元形成的信号的大小。 相位跟踪处理单元基于由跟踪信号检测单元检测出的信号强度来计算相对于跟踪信号的波束的相位指示误差，并计算相对于接收信道信号波束和发送信号波束的相位指示误差。 跟踪光束控制单元根据跟踪信号光束的卫星指向误差来计算相位变化值，并且控制接收有源相控阵列天线内的移相器的相位值。 接收信道波束控制单元根据接收信道信号波束的卫星指向误差来计算相位变化值，并控制接收信道信号波束形成单元内的移相器的相位值。 发送波束控制单元根据发送信号波束的卫星指向误差来计算相位变化，并控制发送有源相控阵天线内的移相器的相位值。
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公开(公告)号：KR102207829B1
公开(公告)日：2021-01-26
申请号：KR1020140059505
申请日：2014-05-19
Applicant: 한국전자통신연구원
Abstract: 본발명은 VCM(Variable Coding and Modulation) 또는 ACM(Adaptive Coding and Modulation) 환경의위성방송이나통신을위한위성서비스에서프레임동기및 MODCOD(Modulation Code rate) 검출이필요한 MMSE(minimum-mean square error) 등화기의적용을위하여왜곡이나인접심볼간섭을제거개선함으로써, 대역폭당위성신호의송수신주파수효율, 또는대역폭당전송효율(Spectral Efficiency, S.E)을개선할수 있는통신장치및 방법에관한것이다.
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公开(公告)号：KR101694517B1
公开(公告)日：2017-01-10
申请号：KR1020120116772
申请日：2012-10-19
Applicant: 한국전자통신연구원
Abstract: 디지털방송시스템의주파수오프셋추정장치는수신한물리계층프레임의 헤더를구성하고있는시작점정보(Start Of Frame, SOF) 심볼들과, 변조방식및 부호율정보제공을위한물리계층시그널링정보(Physical Layer Signaling Code, PLSC) 심볼들을이용하여주파수오프셋을추정한다.
Abstract translation: 用于估计数字广播系统中的频率偏移的方法通过使用形成接收到的物理层帧的头部的帧（SOF）符号和用于提供调制模式和码率信息的物理层信令码（PLSC）符号来估计频率偏移 。 （附图标记）（410）接收单元; （420）近似频率估计单元; （430）解码单元; （440）精细频率估计单元
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公开(公告)号：KR101687243B1
公开(公告)日：2016-12-16
申请号：KR1020120074998
申请日：2012-07-10
Applicant: 한국전자통신연구원
Abstract: 본발명에서는 TDM/TDMA 형태의위성전송및 접속시스템에서데이터패킷수신시 프리엠블과포스트엠블을이용하여초기위상의시작지점과종료지점을계산하고, 파일럿심볼을이용하여초기위상의포워드매트릭및 백워드매트릭연산을수행하여간단히위상오차를계산함으로서위상잡음에강인하게하여위성통신/방송시스템에서위상잡음으로인한성능열화를개선시킬수 있다. 또한, 개선된위상오차계산으로위상잡음을줄여수신단에서신호를보다간단히복원할수 있다.
Abstract translation: 目的：提供一种耐高效率卫星传输的相位噪声的数据发送和接收方法及其装置，以简单地计算相位误差并改善由相位噪声引起的性能下降。 构成：用于高效率卫星传输的数据发送和接收装置包括初始相位计算单元（800），符号转换计算单元（802）和相位误差估计单元（804）。 初始相位计算单元使用接收到的数据分组的前同步码和后同步码来计算初始相位信息。 符号转换计算单元通过使用由初始相位计算单元计算的初始相位信息和接收数据分组的导频符号来执行前向和后向量度计算来计算接收数据分组的符号转换。 相位误差估计单元使用导频符号在接收数据分组的导频符号定位点处计算相位误差，并将计算出的相位误差提供给符号转换计算单元。 （附图标记）（800）初始相位计算单元; （802）符号转换计算单元; （804）相位误差估计单元; （AA）接收数据包;
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公开(公告)号：KR101625213B1
公开(公告)日：2016-06-07
申请号：KR1020100131576
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0003 , H04L1/0009 , H04L1/201
Abstract: 위성단말장치로부터수신된패킷의오류여부를판단하고, 그판단결과에따라모드코드값을계산하여위성단말장치로전송함으로써위성단말장치의패킷전송과정에서패킷손실을줄이는기술에관한것으로, 일실시예에따른위성단말장치와통신하는중심국에서의역방향링크패킷오류판단방법은위성단말장치로부터복수의역방향링크패킷들을수신하는단계와, 역방향링크패킷들을순차적으로조합하여제1 역방향링크패킷을생성하고, 제1 역방향링크패킷과새로이수신되는제2 역방향링크패킷을비교분석하여패킷의오류여부를판단하는단계를포함함으로써, 실제트래픽에대한수율변화에근거하여위성단말장치가역방향링크로패킷전송시패킷손실을줄일수 있다.
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Patent Agency Ranking
公开(公告)号：KR1020140104659A
公开(公告)日：2014-08-29
申请号：KR1020130018387
申请日：2013-02-21
Applicant: 한국전자통신연구원
IPC: H04L12/721
CPC classification number: H04L1/0055 , H03M13/3723 , H03M13/3905 , H03M13/3972
Abstract: The present invention relates to a map decoder having low latency and an operation method thereof, the device comprising a branch metric calculation block for calculating a branch metric based on a reception signal; a processor control block for de-multiplexing the reception signal of a trellis section, an Extrinsec vector, and the calculated branch metric value; and a processor for calculating a path metric entering into each state node of the specific trellis section, for compensating for the calculated path metric, and for calculating the state metric reflected to the next trellis section using the compensated path metric.
Abstract translation: 本发明涉及具有低等待时间的地图解码器及其操作方法，该装置包括：用于基于接收信号计算分支度量的分支度量计算块; 处理器控制块，用于解复用网格段的接收信号，Extrinsec向量和所计算的分支度量值; 以及处理器，用于计算进入特定网格部分的每个状态节点的路径度量，以补偿所计算的路径度量，以及用于使用补偿路径度量计算反映到下一个网格部分的状态度量。
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公开(公告)号：KR1020140039371A
公开(公告)日：2014-04-02
申请号：KR1020120104500
申请日：2012-09-20
Applicant: 한국전자통신연구원
IPC: H04L25/02
CPC classification number: H04N21/6193 , H04L1/0041 , H04N21/2383
Abstract: Provided are an apparatus for processing data, which initializes baseband frame data newly inputted and randomizes the baseband frame data by the unit of byte, and a method thereof. Additionally, provided are a system and a method for processing data, wherein the system randomizes baseband frame data by the unit of byte to construct the baseband frame data and to encode the baseband frame data in performing a mode adaptation process and a stream adaptation process for received TS packets. [Reference numerals] (210) Initialization part; (220) Randomization part
Abstract translation: 提供了一种用于处理数据的装置，其初始化新输入的基带帧数据并以基站为单位随机化基带帧数据及其方法。 此外，提供了一种用于处理数据的系统和方法，其中系统以基本单位随机化基带帧数据，以构建基带帧数据，并对基带帧数据进行编码以执行模式适应过程和流适配过程 收到TS包。 （附图标记）（210）初始化部; （220）随机化部位
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公开(公告)号：KR1020130093857A
公开(公告)日：2013-08-23
申请号：KR1020120009874
申请日：2012-01-31
Applicant: 한국전자통신연구원
CPC classification number: H04L43/00 , H04L43/0835 , H04W28/0242
Abstract: PURPOSE: A transmission control protocol (TCP) packet loss classifying device and a method thereof are provided to classify the packet loss and the network congestion by using the wireless channel status information which is received from the transmission TCP, thereby improving the TCP performance by avoiding unnecessary congestion control. CONSTITUTION: A receiving unit (210) receives more than one TCP data packet from a TCP transmission terminal. A measuring unit (220), when receiving the TCP data packet, measures the quality value of current channel and periodically updates to the TCP layer. A status measuring unit (230) measures the wireless channel status information which is estimated by relating the TCP layer to the physical layer. A transmission unit (240) transmits the wireless channel status information to the TCP transmission terminal by including to the ACK packet. The transmission unit transmits more than one TCP data packet to the TCP transmission terminal. [Reference numerals] (210) Receiving unit; (220) Measuring unit; (230) Status estimation unit; (240) Transmission unit; (AA) TCP receiving terminal
Abstract translation: 目的：提供一种传输控制协议（TCP）丢包分类设备及其方法，通过使用从传输TCP接收的无线信道状态信息对分组丢失和网络拥塞进行分类，从而通过避免TCP 不必要的拥塞控制。 构成：接收单元（210）从TCP传输终端接收多于一个TCP数据分组。 测量单元（220）当接收到TCP数据包时，测量当前信道的质量值并周期性地更新到TCP层。 状态测量单元（230）测量通过将TCP层与物理层相关来估计的无线信道状态信息。 传输单元（240）通过包括ACK分组将无线信道状态信息发送到TCP传输终端。 发送单元向TCP发送终端发送多于一个的TCP数据分组。 （附图标记）（210）接收单元; （220）测量单元; （230）状态估计单元; （240）传输单元; （AA）TCP接收终端
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公开(公告)号：KR1020130088560A
公开(公告)日：2013-08-08
申请号：KR1020120009875
申请日：2012-01-31
Applicant: 한국전자통신연구원
CPC classification number: H03M13/258 , H03M13/3927
Abstract: PURPOSE: A turbo code decoding device is provided to improve total operation time by omitting a part of an operation which takes a large amount of time. CONSTITUTION: A decoding device includes a first decoder (310), a second decoder (320), a first adder (340), and a second adder (330). The first adder produces a first sub input by adding an input sequence and a first output which is the output of the first decoder. The second decoder receives and decodes the first sub input, and produces a second output. The second adder produces a second sub input by adding the input sequence and the second output which is the output of the second decoder. The first decoder decodes the second sub input and produces the first output. [Reference numerals] (310) First decoder; (320) Second decoder; (350,360) Relay; (AA) Input sequence; (BB) Output from a decoder
Abstract translation: 目的：提供turbo码解码装置，通过省略花费大量时间的部分操作来提高总的操作时间。 构成：解码装置包括第一解码器（310），第二解码器（320），第一加法器（340）和第二加法器（330）。 第一加法器通过添加作为第一解码器的输出的输入序列和第一输出来产生第一子输入。 第二解码器接收并解码第一子输入，并产生第二输出。 第二加法器通过将输入序列和作为第二解码器的输出的第二输出相加来产生第二子输入。 第一解码器解码第二子输入并产生第一输出。 （附图标记）（310）第一解码器; （320）第二解码器; （350,360）继电器; （AA）输入序列; （BB）从解码器输出
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公开(公告)号：KR1020130068171A
公开(公告)日：2013-06-26
申请号：KR1020110134506
申请日：2011-12-14
Applicant: 한국전자통신연구원
IPC: H04L27/00
CPC classification number: H04L1/005
Abstract: PURPOSE: An iterative detection and decoding method and an apparatus thereof are provided to reduce a required operation amount for detecting a reception signal and to reduce an output latency time. CONSTITUTION: An update control unit(110) determines a predetermined group to be updated in a first soft decision sequence and transmits detection control information in a determined group. A detecting unit(120) performs an independent detection operation about each extracted reception signal group. A deinterleaver(130) performs deinterleaving about a second soft decision sequence. A decoding unit(140) generates a third soft decision sequence by decoding using a predetermined decoding algorithm in the second soft decision sequence which performs deinterleaving. A repetition control unit(150) controls whether detection and decoding are repetitive by determining whether the number of iterative detections satisfies the predetermined number. An interleaver(160) performs interleaving for the third soft decision sequence. A hard decision unit(170) calculates a hard decision value about a final soft decision sequence transmitted from the repetition control unit. [Reference numerals] (110) Update control unit; (111) Dividing unit; (113) Determining unit; (115) Transmitting unit; (120) Detecting unit; (121) Reception signal extracting unit; (123) Partial update unit; (124) Soft determination value calculation unit; (125) Update unit; (130) Deinterleaver; (140) Decoding unit; (150) Repetition control unit; (160) Interleaver; (170) Hard decision unit; (AA) Reception signal
Abstract translation: 目的：提供一种迭代检测和解码方法及其装置，以减少用于检测接收信号的所需操作量并减少输出等待时间。 构成：更新控制单元（110）以第一软判决序列确定要更新的预定组，并在所确定的组中发送检测控制信息。 检测单元（120）对每个提取的接收信号组执行独立的检测操作。 解交织器（130）执行关于第二软判决序列的解交织。 解码单元（140）通过使用执行去交织的第二软判决序列中的预定解码算法进行解码来生成第三软判决序列。 重复控制单元（150）通过确定迭代检测次数是否满足预定数量来控制检测和解码是否重复。 交织器（160）对第三软判决序列进行交织。 硬决策单元（170）计算关于从重复控制单元发送的最终软判决序列的硬判决值。 （附图标记）（110）更新控制单元; （111）分割单元; （113）确定单位; （115）发射单元; （120）检测单位; （121）接收信号提取单元; （123）部分更新单位; （124）软判定值计算单元; （125）更新单位; （130）去交织器; （140）解码单元; （150）重复控制单元; （160）交织器; （170）硬判决单位; （AA）接收信号
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