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公开(公告)号：KR100857907B1
公开(公告)日：2008-09-10
申请号：KR1020070037003
申请日：2007-04-16
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0842 , H04B7/0413 , H04L27/2613 , H04L27/2656
Abstract: A receiver for detecting random access preambles in a mobile communication system is provided to detect a receiving path of each receiving antenna and the random access preambles received to multiple random access channels through multi-antennas to process signals received from the multi-antennas. A conjugate complex number generator stores a preamble sequence for plural receiving signals, and outputs a conjugate complex number corresponding to a prestored preamble sequence according to a channel band at which a receiving signal composed of at least one input sample is transmitted. Pre-processing units(100,100') process each of the received receiving signals to output plural preambles respectively. Preamble calculators(200,200') output power information about the receiving signals on the basis of the plural preambles and the conjugate complex number. The power information includes power values of each of input samples composing the receiving signals. A non-coherent combiner(300) combines and outputs the outputted power information into one power information. A peak detector(400) provides preamble information about the plural receiving signals for controlling a receiver on the basis of the maximum power value in the power values of the outputted power information.
Abstract translation: 提供了一种用于检测移动通信系统中的随机接入前同步码的接收机，用于通过多天线来检测接收天线的接收路径和接收到多个随机接入信道的随机接入前导码，以处理从多个天线接收的信号。 共轭复数发生器存储用于多个接收信号的前同步码序列，并且根据传输由至少一个输入样本组成的接收信号的信道频带输出与预先存储的前同步码序列相对应的共轭复数。 预处理单元（100,100'）处理每个接收到的接收信号以分别输出多个前导码。 前导码计算器（200,200'）基于多个前导码和共轭复数输出关于接收信号的功率信息。 功率信息包括构成接收信号的每个输入样本的功率值。 非相干组合器（300）将输出的功率信息组合并输出到一个功率信息中。 峰值检测器（400）根据输出功率信息的功率值中的最大功率值，提供关于多个接收信号的前导信息，用于控制接收机。
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公开(公告)号：KR1020070064237A
公开(公告)日：2007-06-20
申请号：KR1020060086983
申请日：2006-09-08
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2647 , H04L25/03286 , H04L27/01 , H04L27/2628
Abstract: An apparatus for generating a down link signal, and a method and an apparatus for restoring data in a cellular system are provided to improve calculation efficiency of LLR(Log-Likelihood Ratio) for a soft decision by calculating interference fading and noise. A method for restoring data in a cellular system includes the steps of: performing equalization for compensating delivering time delay deviation and reduction for each frequency included in a received signal(S110); detecting interference element caused by fading inside a cell, and channel coefficients including fading element generated by neighboring cells(S120); detecting a dispersion of an AWGN(Additive White Gaussian Noise) element included in the received signal(S130); calculating the dispersion of entire noise element which the fading element and AWGN is considered(S140); calculating an LLR for a corresponding received signals(S150); and deciding the received signal by performing a soft decision by using the LLR.
Abstract translation: 提供一种用于生成下行链路信号的装置，以及用于在蜂窝系统中恢复数据的方法和装置，以通过计算干扰衰落和噪声来提高用于软判决的LLR（对数似然比）的计算效率。 一种用于在蜂窝系统中恢复数据的方法包括以下步骤：执行用于补偿递送时间延迟偏差和包括在接收信号中的每个频率的减少的均衡（S110）; 检测由小区内的衰落引起的干扰元素，以及包括由相邻小区生成的衰落元素的信道系数（S120）。 检测包含在接收信号中的AWGN（加性白高斯噪声）元素的色散（S130）; 计算考虑衰落元素和AWGN的整个噪声要素的色散（S140）; 计算相应接收信号的LLR（S150）; 以及通过使用所述LLR执行软判决来决定所接收的信号。
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公开(公告)号：KR102197851B1
公开(公告)日：2021-01-04
申请号：KR1020140142053
申请日：2014-10-20
Applicant: 한국전자통신연구원
Abstract: 단말간직접통신에서주체단말은통신할대상의객체유형을지정하고, 통신할대상의객체유형을포함한대상발견요청메시지를인접한복수의대상단말로전송하며, 복수의대상단말중 통신할대상의객체유형에해당하는적어도하나의대상단말로부터대상발견응답메시지를수신하면, 적어도하나의대상단말중 하나의대상단말을통신할대상으로결정한다.
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Patent Agency Ranking
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公开(公告)号：KR101920064B1
公开(公告)日：2018-11-19
申请号：KR1020170111976
申请日：2017-09-01
Applicant: 한국전자통신연구원
IPC: H04L1/00
Abstract: 협대역사물인터넷단말의블라인드복호방법및 장치가제공된다. 블라인드복호장치는, 시스템정보에대응하는데이터시퀀스가할당된복수의서브블록에대응하는복수의서브블록메모리와, 상기복수의서브블록메모리로부터출력되는데이터시퀀스를데이터별로누적하는누적메모리를포함하는블라인드복호메모리를포함한다. 클리핑부는상기누적메모리에저장된데이터를클리핑하여복호메모리에저장하며, 이후, 복호기가상기복호메모리에저장된데이터를토대로복호를수행한다.
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公开(公告)号：KR1020170115942A
公开(公告)日：2017-10-18
申请号：KR1020170033339
申请日：2017-03-16
Applicant: 한국전자통신연구원
Abstract: 사물인터넷에서동기신호생성방법및 장치가개시된다. 동기신호생성방법은, 사물인터넷의인밴드동작모드또는가드밴드동작모드에서, 동기신호를위해할당된전체부반송파중, 상위부반송파그룹에할당된신호와하위부반송파그룹에할당된신호를서로교환하여, 부반송파매핑을수행할수 있다.
Abstract translation: 公开了一种用于在物体互联网中生成同步信号的方法和设备。 同步信号生成方法，以及在波段操作的模式或物联网的操作的保护频带模式，分配给同步信号的整个子载波，信号的交换分配给信号和分配给更高的子载波组的子子载波组， 可以执行子载波映射。
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