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公开(公告)号：KR1020100094218A
公开(公告)日：2010-08-26
申请号：KR1020090013541
申请日：2009-02-18
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
IPC: H04L27/26
CPC classification number: H04L27/2695 , H04L27/2614 , H04L27/2628 , H04L27/2675
Abstract: PURPOSE: A channel estimator of an OFDM system is provided to execute a channel estimation by using a weighting value based on an adaptive channel impulse response. CONSTITUTION: A channel estimator(100) obtains a channel frequency response value by using a received signal and a reference pilot signal. An interpolator(200) obtains a channel frequency response value in entire effective bands of a present symbol by interpolating the channel frequency response value. An IFFT(Inverse Fast Fourier Transform) part(300) changes the channel frequency response value of the interpolator into the channel frequency response value in the time domain through the IFFT transformation. A weighting value setting part(400) sets a weighting value according to the size of a pass power. A multiplicator(500) varies the channel impulse response value from the IFFT part. A FFT(Fast Fourier Transform) part(600) transforms the channel impulse response value from the multiplicator into the channel frequency response value in the frequency domain.
Abstract translation: 目的：提供OFDM系统的信道估计器，以通过使用基于自适应信道脉冲响应的加权值来执行信道估计。 构成：信道估计器（100）通过使用接收信号和参考导频信号来获得信道频率响应值。 内插器（200）通过内插通道频率响应值来获得当前符号的整个有效频带中的信道频率响应值。 IFFT（逆快速傅立叶变换）部分（300）通过IFFT变换将内插器的信道频率响应值改变为时域中的信道频率响应值。 加权值设定部（400）根据通过功率的大小设定加权值。 乘法器（500）改变来自IFFT部分的信道脉冲响应值。 FFT（快速傅立叶变换）部分（600）将来自乘法器的信道脉冲响应值转换为频域中的信道频率响应值。
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公开(公告)号：KR1020100072481A
公开(公告)日：2010-07-01
申请号：KR1020080130901
申请日：2008-12-22
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
CPC classification number: H04L25/0204 , H04L25/0242 , H04L25/03159 , H04L25/03821 , H04L27/2647 , H04L2025/0342 , H04L27/01 , H04L27/2695
Abstract: PURPOSE: An OFDM channel equalizer and a method thereof are provided to improve the dispersion capability by multiplying the number of occurrence. CONSTITUTION: A compensation value setting unit(100) sets the compensation value of the diagonal matrix form by using preset divergence limit value and extracted diagonal matrix from the channel matrix of an OFDM receiver. An initial estimation value calculation unit(200) calculates the initial estimation value by using signal and the compensation value processed FFT. An equalizer unit(300) obtains the interference induction value by using the compensation value, and the channel matrix and diagonal matrix. The equalizer unit obtains the interference cancellation compensation value by multiplying the equalization signal and the interference induction value which symbol is determined. The equalizer unit detects the transmission signal by subtracting the interference cancellation compensation value in the initial estimation value. A symbol decision unit(400) provides the proximal signal of the previous which symbol is determined the signals of equalizer to equalizer by deciding symbol toward the proximal signal of the transmission signal.
Abstract translation: 目的：提供OFDM信道均衡器及其方法，通过乘以发生次数来提高色散能力。 构成：补偿值设定单元（100）通过使用预设发散极限值和从OFDM接收机的信道矩阵提取的对角矩阵来设置对角矩阵形式的补偿值。 初始估计值计算单元（200）通过使用信号和经过FFT的补偿值来计算初始估计值。 均衡器单元（300）通过使用补偿值和信道矩阵和对角矩阵来获得干扰感应值。 均衡器单元通过将均衡信号和确定符号的干扰感应值相乘来获得干扰消除补偿值。 均衡器单元通过减去初始估计值中的干扰消除补偿值来检测发送信号。 符号决定单元（400）通过向发送信号的近端信号判定符号，提供前一个符号的近端信号，该符号被确定为均衡器的信号。
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公开(公告)号：KR1020100063940A
公开(公告)日：2010-06-14
申请号：KR1020080122324
申请日：2008-12-04
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
CPC classification number: H04L27/2657 , H04L27/2676 , H04L27/2688 , H04L25/0224 , H04L25/03006
Abstract: PURPOSE: A frequency synchronization apparatus and a method in an OFDM system are provided to estimate a frequency offset using a correlative value by an echo channel. CONSTITUTION: A correlating unit(100) obtains a first correlative value by correlating a standards guard section for applying to a standard protective section and the standard protective section which previously knows among a OFDM symbols. The correlating unit establishes from a predetermined spot among the standard protective section as an estimation protective section. The correlating unit obtains a second correlative value by correlating an estimation guard section applying to the estimation protective section. A deciding unit(200) decides a first case, a second case and a third case by comparing the first correlative value and the second correlative value. A frequency offset estimator(400) estimates the frequency offset using the correlative value in case of applying to among the first case to the second case decided to the deciding unit.
Abstract translation: 目的：提供OFDM系统中的频率同步装置和方法，以使用回波信道的相关值来估计频率偏移。 构成：相关单元（100）通过将用于应用于标准保护部分的标准防护部分与先前在OFDM符号中知道的标准保护部分相关联来获得第一相关值。 相关单元从标准保护部中的预定点建立为估计保护部。 相关单元通过将应用于估计保护部的估计保护部分相关联来获得第二相关值。 决定单元（200）通过比较第一相关值和第二相关值来判定第一情况，第二情况和第三情况。 频率偏移估计器（400）使用在第一种情况下应用的相关值来估计频率偏移，而对决定单元判定第二种情况。
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公开(公告)号：KR1020100037905A
公开(公告)日：2010-04-12
申请号：KR1020080097244
申请日：2008-10-02
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
IPC: H04J11/00
CPC classification number: H04L27/2675 , H04L25/0224 , H04L27/2691 , H04L27/2695
Abstract: PURPOSE: In OFDM(Orthogonal Frequency Division Multiplexing) receiver having the co-channel interference estimation and decoding performance improving function is the subcarrier location having interference, the stable performance of receiving % reception ability is guaranteed by accurately demodulating data. CONSTITUTION: A channel estimator(200) presumes the channel distortion by using the pilot symbol of the received signal. An equalizer(300) equalizes the channel distortion of the received signal by using the channel estimation value of the channel estimator. A P/S transform unit(400) changes the received signal which becomes equal as described above into the serial type. The co-channel interference estimating unit(500) obtains the distribution value toward the electricity of the received signal by using the channel estimation value. The location having the co-channel interference the co-channel interference estimating unit uses the distribution value is detected.
Abstract translation: 目的：具有同信道干扰估计和解码性能改善功能的OFDM（正交频分复用）接收机是具有干扰的子载波位置，通过准确解调数据来保证接收％接收能力的稳定性能。 构成：信道估计器（200）通过使用接收信号的导频符号来假设信道失真。 均衡器（300）通过使用信道估计器的信道估计值来均衡接收信号的信道失真。 P / S变换单元（400）将如上所述变得相等的接收信号改变为串行类型。 同信道干扰估计单元（500）通过使用信道估计值来获得接收信号的电力分布值。 检测具有同信道干扰估计单元的同信道干扰的位置使用分布值的位置。
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公开(公告)号：KR1020090100017A
公开(公告)日：2009-09-23
申请号：KR1020080025366
申请日：2008-03-19
Applicant: 성균관대학교산학협력단
CPC classification number: H04L7/042 , H04B7/18513 , H04B1/12 , H04B7/18519
Abstract: PURPOSE: A downlink receiver of the INMARSAT communication is provided to sample data symbols so as to be reliable from a received signal in a communication environment using an INMARSAT Mini-m system. CONSTITUTION: A downlink receiver of the INMARSAT communication comprises an ADC(Analog to Digital Converter), the first interpolator(230), a UW detector(210), the second interpolator(231), a parallax detector(240) and a controller. The ADC converts a received analog signal into a digital signal, r(k), and then outputs it. The first interpolator restores the first data by using the digital signal. The UW detector produces a differential signal by multiplying conjugate complex numbers of the r(k) and r(k-1) to determine whether a unique word exists by using the power of the differential signal.
Abstract translation: 目的：提供INMARSAT通信的下行链路接收机，以便在使用INMARSAT Mini-m系统的通信环境中从接收到的信号中采样数据符号。 构成：INMARSAT通信的下行链路接收机包括ADC（模数转换器），第一内插器（230），UW检测器（210），第二内插器（231），视差检测器（240）和控制器。 ADC将接收到的模拟信号转换为数字信号r（k），然后将其输出。 第一内插器通过使用数字信号来恢复第一数据。 UW检测器通过乘以r（k）和r（k-1）的共轭复数来产生差分信号，以通过使用差分信号的功率来确定是否存在唯一字。
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Patent Agency Ranking
公开(公告)号：KR1020080081752A
公开(公告)日：2008-09-10
申请号：KR1020070022207
申请日：2007-03-06
Applicant: 한화시스템 주식회사 , 성균관대학교산학협력단
Abstract: An array antenna apparatus and a control method thereof in a GNSS(Global Navigation Satellite System) anti-jamming system are provided to cope with jamming by increasing nulling effect in a jamming signal direction. An array antenna apparatus(400) includes a jamming existence antenna unit(410) and a jamming nonexistence antenna unit(420). The jamming existence antenna unit includes antenna elements selectively operated for adaptive signal processing corresponding to a jamming signal in existence of the jamming signal except for a received GNSS signal. The jamming nonexistence antenna unit includes minimal antenna elements for processing the GNSS signal in nonexistence of the jamming signal.
Abstract translation: 提供了一种GNSS（全球导航卫星系统）抗干扰系统中的阵列天线装置及其控制方法，以通过增加干扰信号方向的零效应来应对干扰。 阵列天线装置（400）包括干扰存在天线单元（410）和干扰不存在天线单元（420）。 干扰存在天线单元包括对应于除了接收到的GNSS信号之外的存在干扰信号的干扰信号而选择性地进行自适应信号处理的天线元件。 干扰不存在天线单元包括用于在不存在干扰信号的情况下处理GNSS信号的最小天线元件。
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公开(公告)号：KR102236094B1
公开(公告)日：2021-04-05
申请号：KR1020140042543
申请日：2014-04-09
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
IPC: H04J11/00
Abstract: 본발명은셀룰러통신시스템에서셀간탐색채널구간을정렬하는방법에있어서, 서빙셀을관장하는서빙기지국이, 상기서빙셀에위치하며 (RRC: Radio Resource Control) 연결모드로동작하는적어도하나의단말을선정하고, 상기적어도하나의단말에게인접셀의탐색채널관련정보를요청하는요청메시지를전송하고, 상기적어도하나의단말로부터인접셀 식별자(ID; Identifier), 상기인접셀의프레임기준시각을기준으로탐색채널을이동시킨시간적조정값 및상기서빙셀과상기인접셀 간의시간오프셋(NTD: Network Time Difference)을수신하고, 상기인접셀 ID, 상기시간적조정값, 상기 NTD를기반으로상기서빙셀의탐색채널구간을상기인접셀의탐색채널구간에정렬한다.
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公开(公告)号：KR1020170141471A
公开(公告)日：2017-12-26
申请号：KR1020160074572
申请日：2016-06-15
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
CPC classification number: H04W64/006 , H04B17/327 , H04W4/023 , H04W56/007 , H04W76/14
Abstract: 본개시는 LTE(Long Term Evolution)와같은 4G(4generation) 통신시스템이후보다높은데이터전송률을지원하기위한 5G(5generation) 또는 pre-5G 통신시스템에관련된것이다. 일실시예에따르는무선통신시스템에서단말의동작방법은, 다른단말들로부터신호들을수신하는과정과, 상기신호들의수신전력및 상기신호들에관련된정보에기초하여상기다른단말들중 상기단말과근접성(proximity)을가지는하나의다른단말을선택하는과정과, 상기다른단말의위치정보에기초하여상기단말의위치를결정하는과정을포함한다.
Abstract translation: 本公开涉及用于在诸如长期演进（LTE）之类的4G（4G）通信系统之后支持更高数据速率的5G（5代）或5G前通信系统。 在根据终端的操作的一个实施例方法的无线通信系统中，它处理接收到的功率和接近与其它终端的有关信号接收来自其他终端的信号的信号的信息的基础上，终端 该方法包括以下步骤：选择其中具有接近终端的其他终端之一;以及基于另一终端的位置信息来确定终端的位置。
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公开(公告)号：KR1020170134116A
公开(公告)日：2017-12-06
申请号：KR1020160065914
申请日：2016-05-27
Applicant: 성균관대학교산학협력단
CPC classification number: G01S5/0045 , G01S5/06 , G01S2205/008 , H04W64/00
Abstract: 무선통신시스템에서단말의위치를측정하기위한방법이제공된다. 방법은, 제 1 대역폭을가지는제 1 위치측위기준신호 (Positioning Reference Signal, PRS) 를기반으로측정된, 제 1 기지국과제 2 기지국간의 PRS 수신시각차이 (Reference Signal Time Difference, RSTD) 에관한정보를수신하는단계와, 상기제 1 대역폭과상이한제 2 대역폭을가지는제 2 PRS 를기반으로측정된, 제 1 기지국과제 2 기지국간의 RSTD 에관한정보를수신하는단계, 그리고상기제 1 PRS 를기반으로측정된제 1 기지국과제 2 기지국간의 RSTD 에관한정보및 상기제 2 PRS 를기반으로측정된제 1 기지국과제 2 기지국간의 RSTD 에관한정보를기반으로, 제 1 기지국과제 2 기지국간의최종 RSTD 를결정하는단계를포함한다. 따라서, 대역폭의확장및 RSTD 리포팅테이블의변경없이도 PRS 수신의양자화오차를저감할수 있다.
Abstract translation: 提供了一种用于测量无线通信系统中的终端的位置的方法。 与第一带宽与第一位置的位置参考信号（定位参考信号，PRS）方法测得的信息基于所述第一基站接收的分配的两个基站的时间差（参考信号时间差，RSTD）之间PRS 接收和的步骤，所述第一带宽，在基于具有第二PRS的第二个不同的带宽，包括以下步骤的第一测量：接收关于所述第一基站分配第二基站之间RSTD信息，并且测量是基于所述第一PRS doenje第一基站向所述分配信息以及基于关于所述第一基站之间的RSTD由其中基于关于所述第二基站之间RSTD第二PRS任务2测量的基站，所述第一基站分配，确定所述第二基站之间的最终RSTD的信息 它包括。 因此，可以减少PRS接收的量化误差，而不会扩大带宽并改变RSTD报告表。
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