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公开(公告)号：KR1020040055299A
公开(公告)日：2004-06-26
申请号：KR1020020081941
申请日：2002-12-20
Applicant: 한국전자통신연구원
IPC: H04B7/005
Abstract: PURPOSE: An interference removing method of a mobile communication system through joint detection is provided to reduce the amount of calculation in detecting a joint part by completely removing an interference component of a non-considered symbol. CONSTITUTION: Symbols that are not affected by interference can be detected by repeating receiving data vectors. In this case, a size of a repeated portion is affected by maximum time delay. If an interval between symbols is great, the two symbols do not have correlation. Thus, if the number of symbols exceeds a certain size, it does not much affect performance. It is important to search the number of symbols and a size of symbols to be repeated that may reduce the amount of calculation to its maximum without degradation of performance. Such factors can be easily found out if time delay information of a channel could be known. By using repetition techniques, the amount of calculation in the processing detecting a joint part can be considerably reduced without degradation of performance due to influence of interference of the time delay component.
Abstract translation: 目的：提供通过联合检测的移动通信系统的干扰消除方法，以通过完全去除未考虑的符号的干扰分量来减少检测关节部分的计算量。 构成：不受干扰影响的符号可以通过重复接收数据向量来检测。 在这种情况下，重复部分的大小受到最大时间延迟的影响。 如果符号之间的间隔很大，则两个符号不具有相关性。 因此，如果符号数超过一定大小，则对性能没有太大的影响。 搜索要重复的符号数量和符号大小很重要，可以将计算量减少到最大值，而不会降低性能。 如果通道的时间延迟信息可以被知道，则可以容易地发现这些因素。 通过使用重复技术，可以显着地减少检测关节部分的处理中的计算量，而不会由于延迟分量的干扰的影响而导致性能下降。
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公开(公告)号：KR1020030013651A
公开(公告)日：2003-02-15
申请号：KR1020010047762
申请日：2001-08-08
Applicant: 한국전자통신연구원
IPC: H03M13/00
CPC classification number: H03M13/23 , H03M13/3707 , H03M13/3753
Abstract: PURPOSE: A sequential decoding apparatus of a mobile communication system and a method thereof are provided to efficiently decode a stream of symbols encoded by a convolution code when the stream is transmitted through a channel in the mobile communication system. CONSTITUTION: A CPU(202) controls a total decoding operation. An optimal path determination buffer(210) sequentially stores an optical path. A competitive path determination buffer(210) sequentially stores at least one competitive path. A buffer controller controls the optimal path determination buffer(210) and the competitive path determination buffer(210) using a control signal from the CPU(202). An encoder(214) encodes signals from the optimal path determination buffer(210) and the competitive path determination buffer(210) by the set bit number. A bit metric calculation(216) calculates a metric using the signals from the optimal path determination buffer(210) and the competitive path determination buffer(210) and an input signal.
Abstract translation: 目的：提供一种移动通信系统的顺序解码装置及其方法，用于当通过移动通信系统中的信道发送流时，有效地解码由卷积码编码的符号流。 构成：CPU（202）控制总的解码操作。 最佳路径确定缓冲器（210）顺序地存储光路。 竞争路径确定缓冲器（210）顺序地存储至少一个竞争路径。 缓冲器控制器使用来自CPU（202）的控制信号来控制最优路径确定缓冲器（210）和竞争路径确定缓冲器（210）。 编码器（214）将来自最优路径确定缓冲器（210）和竞争路径确定缓冲器（210）的信号编码设定的位数。 比特度量计算（216）使用来自最佳路径确定缓冲器（210）和竞争路径确定缓冲器（210）的信号和输入信号来计算度量。
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公开(公告)号：KR102220463B1
公开(公告)日：2021-02-25
申请号：KR1020200116554
申请日：2020-09-11
Applicant: 한국전자통신연구원
IPC: H04B7/06 , H04B7/0452
Abstract: 선택적빔포밍을이용한프레임전송방법및 상기방법을수행하는통신장치가개시된다. 개시된통신장치는통신에이용되는복수의부반송파들을복수의주파수유닛들로분류한분류정보에따라빔포밍행렬을결정하고, 빔포밍행렬에 LTF 시퀀스를매핑하고, 매핑된 LTF 시퀀스를포함하는 BA-T를전송하고, BA-T를수신한복수의사용자단말들로부터, BA-T의수신세기에기초하여생성된피드백정보를수신하며, 피드백정보에따라복수의사용자단말들로전송하고자하는데이터프레임들에주파수유닛을할당하고, 할당된주파수유닛을이용하여데이터프레임들을전송할수 있다. 이때, BA-T의수신세기는복수의사용자단말들각각에서복수의주파수유닛들별로결정될수 있다.
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Patent Agency Ranking
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公开(公告)号：KR101824933B1
公开(公告)日：2018-02-02
申请号：KR1020170135825
申请日：2017-10-19
Applicant: 한국전자통신연구원
IPC: H04L5/00 , H04L1/00 , H04B7/0452 , H04W28/06 , H04L25/02 , H04B7/06 , H04B7/0456 , H04L25/03
CPC classification number: H04W72/0406 , H04B7/0452 , H04L1/007 , H04L1/0072 , H04L1/0606 , H04L1/0612 , H04L5/0023 , H04L5/0053 , H04L5/0073 , H04W28/04 , H04W28/06 , H04W28/22 , H04W48/08 , H04W80/04 , H04W84/12
Abstract: 본발명은다중사용자무선통신시스템에서전송효율향상을위한제어및 훈련심볼전송방법및 장치에대한것이다. 본발명의일 실시예에따른방법은, 다중사용자무선통신시스템에서제어및 훈련심볼전송방법으로, 동시에서로다른데이터를각 단말들로전송할시 각데이터들의요구전송률이각 단말들에서채널추정을통해만족할수 있는지를판단하는과정과, 상기판단결과각 데이터의요구전송률이만족되지않는경우상기제어및 훈련심볼을시간, 주파수, 코드영역의조합을이용하여단말별로구분할수 있도록데이터프레임을구성하여각 단말별로전송하는과정을포함한다.
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公开(公告)号：KR1020170066040A
公开(公告)日：2017-06-14
申请号：KR1020150172570
申请日：2015-12-04
Applicant: 한국전자통신연구원
Abstract: 이동통신시스템에서송신장치는복수의부슬롯을포함하는서브프레임에서하나의부슬롯이전송되는데 걸리는시간을짧은 TTI(short transmission time interval)로정의하고, 홀수번째부슬롯과짝수번째부슬롯에해당하는두 부슬롯간에공유하는하나의전송심볼을이용하여기준신호를전송하며, 상기두 부슬롯에서상기하나의전송심볼을제외한나머지전송심볼을이용하여송신데이터를전송한다.
Abstract translation: 在移动通信系统中，发送装置计算用于在包括多个子时隙的子帧中发送一个子时隙的短发送时间间隔（TTI） 并且使用除两个子时隙中的一个发送符号之外的其余发送符号来发送发送数据。
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