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公开(公告)号：KR1020120051460A
公开(公告)日：2012-05-22
申请号：KR1020100112903
申请日：2010-11-12
Applicant: 한국전자통신연구원 , 충남대학교산학협력단
IPC: H04J11/00
CPC classification number: H04B1/123 , H04J11/00 , H04L25/0224 , H04L27/2695
Abstract: PURPOSE: A receiving apparatus in an OFDM(Orthogonal Frequency Division Multiplexing) system is provided to detect reception signals by estimating distortion matrices combining the unbalanced component of in-phase signals and Quadrature-phase signals and a channel frequency response characteristic. CONSTITUTION: A distortion matrix estimating unit receives a preamble signal including two different long training field symbols. The distortion matrix estimating unit estimates a distortion matrix. An OFDM(Orthogonal Frequency Division Multiplexing) signal processing unit compensates for distortion components from the reception signals by using the distortion matrix. A transmitter includes a preamble generation unit and an OFDM signal processing unit. The preamble generation unit transmits the preamble through two symbol periods by applying Alamouti technique to make a 2x2 non-singular matrix. The OFDM signal processing unit processes transmission signals and the preamble by OFDM.
Abstract translation: 目的：提供OFDM（正交频分复用）系统中的接收装置，通过估计组合同相信号的不平衡分量和正交相位信号以及信道频率响应特性的失真矩阵来检测接收信号。 构成：失真矩阵估计单元接收包括两个不同的长训练场符号的前导码信号。 失真矩阵估计单元估计失真矩阵。 OFDM（正交频分复用）信号处理单元通过使用失真矩阵来补偿来自接收信号的失真分量。 发射机包括前导码生成单元和OFDM信号处理单元。 前导码生成单元通过应用Alamouti技术来形成2×2个非奇异矩阵，通过两个符号周期来发送前同步码。 OFDM信号处理单元通过OFDM处理发送信号和前导码。
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公开(公告)号：KR101903772B1
公开(公告)日：2018-10-11
申请号：KR1020120098745
申请日：2012-09-06
Applicant: 한국전자통신연구원
Abstract: PHR 비트및 PSDU 비트를다중화하여제1 비트열을생성하는단계, 상기제1 비트열을컨볼루션부호화하는단계, 상기컨볼루션인코딩된제1 비트열을인터리빙하는단계, 상기인터리빙된제1 비트열을 SHR 비트와다중화하여제2 비트열을생성하는단계, 그리고상기제2 비트열을 FSK 방식또는위치기반 FSK 방식으로변조하는단계를포함하는주요시설모니터링저전력무선통신을위한패킷의생성방법이제공된다.
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公开(公告)号：KR101832471B1
公开(公告)日：2018-04-04
申请号：KR1020140040209
申请日：2014-04-03
Applicant: 한국전자통신연구원
IPC: H04L27/26 , H04L12/841
Abstract: 동기시퀀스가 2n개인 LTF의 n+1번째동기시퀀스의부호가 STF의마지막동기시퀀스의부호와반대인 LTF를포함하는프리앰블을미리정해진시간만큼지연시키는단계, 프리앰블과지연시킨프리앰블사이의상관값을계산하는단계, 그리고상관값과상관값에대한임계값을비교하여프레임의경계를검출하는단계를통해프레임의경계를검출하는방법및 장치가제공된다.
Abstract translation: 同步序列的步骤是由第（n + 1）的第2n个个体LTF的同步序列中的符号给出包括预先相反的STF的最后同步序列的LTF的标志，所述前导码和延迟，其前同步码之间的相关值的前导的时间延迟 提供了一种用于通过计算步骤检测帧的边界的方法和设备，以及比较相关值的阈值和相关值以检测帧的边界的步骤。
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公开(公告)号：KR1020150085747A
公开(公告)日：2015-07-24
申请号：KR1020140005744
申请日：2014-01-16
Applicant: 한국전자통신연구원
IPC: H04L27/18
CPC classification number: H04W4/70 , G01D4/002 , G08C17/02 , H04J3/0608 , H04L1/00 , H04L1/0041 , H04L1/0071 , H04L1/02 , H04L7/00 , H04L27/2078 , H04Q2209/43 , H04Q2209/60 , H04W56/00
Abstract: WPAN 통신시스템의송신장치는동기화헤더, 물리계층헤더및 물리계층서비스데이터유닛을생성하고, 상기동기화헤더와상기물리계층헤더를비트열로다중화한후 다중화된비트열을제1 차동위상변조방식으로변조하며, 상기물리계층서비스데이터유닛을제2 차동위상변조방식으로변조하고, 상기제1 차동위상변조방식으로변조된심볼과제2 차동위상변조방식으로변조된심볼을심볼열로다중화한후 송신한다.
Abstract translation: 本发明涉及一种创建同步报头，物理层报头和物理层业务数据单元的无线个域网（WPAN）通信系统的传输设备; 将同步头和物理头复用为位串; 通过使用第一差分相位调制方法来调制多路复用位串; 通过使用第二差分相位调制方法来调制物理层服务数据单元; 并且将由第一和第二差分相位调制方法调制的符号复用到符号串中，然后复用并发送调制符号串。
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公开(公告)号：KR1020140121358A
公开(公告)日：2014-10-15
申请号：KR1020140040209
申请日：2014-04-03
Applicant: 한국전자통신연구원
IPC: H04L27/26 , H04L12/841
CPC classification number: H04L27/2692 , H04L27/2628 , H04L27/2678 , H04L47/283
Abstract: 동기 시퀀스가 2n개인 LTF의 n+1번째 동기 시퀀스의 부호가 STF의 마지막 동기 시퀀스의 부호와 반대인 LTF를 포함하는 프리앰블을 미리 정해진 시간만큼 지연시키는 단계, 프리앰블과 지연시킨 프리앰블 사이의 상관값을 계산하는 단계, 그리고 상관값과 상관값에 대한 임계값을 비교하여 프레임의 경계를 검출하는 단계를 통해 프레임의 경계를 검출하는 방법 및 장치가 제공된다.
Abstract translation: 提供一种用于检测帧边界的方法，包括：将包括长期演进（LTE）的前导码延迟多达预定时间的步骤，其中包括2n个号码的LTE的第n + 1个同步序列的标记 的同步序列与LET中STF的最后同步序列的标记相反; 计算前同步码和延迟前同步码之间的相关值的步骤; 以及通过比较相关值和相关值的阈值来检测帧边界的步骤及其装置。
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Patent Agency Ranking6.发明公开
公开(公告)号：KR1020140008239A
公开(公告)日：2014-01-21
申请号：KR1020130064282
申请日：2013-06-04
Applicant: 한국전자통신연구원
CPC classification number: H04L69/323 , H04L27/10 , H04W4/80
Abstract: According to an embodiment of the present invention, a packet generation method of a physical layer transmitter of a WPAN system in which the transmitter operates an WPAN service in a TVWS is provided. A packet generated by the packet generation method includes: a preamble; a start frame classifier followed by the preamble; a first physical layer header followed by the start frame classifier; and a physical layer service data unit followed by the first physical layer header. In here, the first physical layer header shows whether the packet is a ranging packet for ranging or not and includes a ranging packet identification bit corresponding to a reserved bit of the second physical layer header in SUN system and LECIM system and a parity bit.
Abstract translation: 根据本发明的实施例，提供了一种WPAN系统的物理层发射机的分组产生方法，其中发射机在TVWS中操作WPAN业务。 由分组生成方法生成的分组包括：前同步码; 起始帧分类器，后面是前导码; 第一个物理层标题，后跟起始帧分类器; 以及后面是第一物理层报头的物理层服务数据单元。 在这里，第一物理层报头显示分组是否是用于测距的测距分组，并且包括与SUN系统和LECIM系统中的第二物理层报头的保留位相对应的测距分组标识位和奇偶校验位。
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公开(公告)号：KR101303553B1
公开(公告)日：2013-09-03
申请号：KR1020100082433
申请日：2010-08-25
Applicant: 한국전자통신연구원
Inventor： 신철호
IPC: H04L27/26
CPC classification number: H04L27/2602
Abstract: 주파수 영역 확산을 사용하는 OFDM 규격에서의 프레임 생성 방법 및 장치가 제공된다. 상기 방법 및 장치는 다양한 FDS 및 인터리버 크기에 기반하여 패드 비트의 개수를 결정하고, 결정된 개수만큼의 패드 비트를 삽입한 프레임을 구성함으로써 다양한 FDS를 사용하는 데이터 전송률에 적합한 프레임을 제공하며, 잉여 OFDM 심볼의 구성을 최소화한 프레임을 제공한다.
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公开(公告)号：KR1020120019189A
公开(公告)日：2012-03-06
申请号：KR1020100082433
申请日：2010-08-25
Applicant: 한국전자통신연구원
Inventor： 신철호
IPC: H04L27/26
CPC classification number: H04L27/2602
Abstract: PURPOSE: A method for forming a frame at an OFDM(Orthogonal Frequency Division Multiplexing) standard using frequency domain diffusion and an apparatus thereof are provided to minimize the configuration of a redundancy OFDM symbol by considering the relation of FDS(Frequency Domain Spreading) and an interleaver size which is helpful for building a low power system. CONSTITUTION: The number of coded bits, which are processed per an OFDM(Orthogonal Frequency Division Multiplexing) symbol of the numbers of NF, or NCBPS is determined based on the NCBPS of an interleaver size and NF(S710). The number of data bits, which are processed per OFDM symbols, or NDBPS is determined based on NCBPS and a coding rate of R(S720). The number of pad bits or NPAD is determined based on the NDBPS(S730). The number of the OFDM symbol in frames or NSYM is determined based on NF and the NDBPPS(S740). An encoded bit is generated by adding the pad bits as much as NPAD increases to a header field in a physical layer(S750).
Abstract translation: 目的：提供一种使用频域扩散的OFDM（正交频分复用）标准形成帧的方法及其装置，以通过考虑FDS（频域扩频）和 交织器尺寸有助于构建低功率系统。 构成：基于交织器尺寸和NF的NCBPS来确定针对每个OFDM数量或NFBPS的OFDM（正交频分复用）符号处理的编码比特数（S710）。 基于NCBPS和编码率R（S720）确定每OFDM符号处理的数据比特数或NDBPS。 基于NDBPS确定焊盘位或NPAD的数量（S730）。 基于NF和NDBPPS确定帧或NSYM中的OFDM符号的数量（S740）。 通过将NPAD增加的填充比特添加到物理层中的头字段来生成编码比特（S750）。
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公开(公告)号：KR101074109B1
公开(公告)日：2011-10-17
申请号：KR1020090028241
申请日：2009-04-01
Applicant: 한국전자통신연구원
IPC: H04B1/7176 , H04L27/36
Abstract: 본발명은무선통신시스템의송신장치, 수신장치및 송수신방법에관한것이다. 본발명에따른송신장치는다중대역을사용하는무선통신시스템의송신장치로서, 복수의부대역에각각대응하는복수의송신부, 그리고데이터전송률에따라상기복수의송신부중 적어도하나를선택하고, 입력신호를선택된상기송신부에전달하는분배부를포함하고, 각송신부는상기분배부로부터출력신호를전달받는경우상기출력신호를변환하여송신한다.
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公开(公告)号：KR1020080050974A
公开(公告)日：2008-06-10
申请号：KR1020070077755
申请日：2007-08-02
Applicant: 한국전자통신연구원
IPC: H04B1/44
Abstract: An RF(Radio Frequency) transceiver for eliminating crosstalk of transceiving switching in a UWB(Ultra Wide Band) system is provided to isolate a signal so that the signal is not outputted from a transmitter when the transceiver operates in a reception mode, thereby eliminating crosstalk of a transmission signal applied to a receiver. A control signal generator is connected between a transmitter and a switch(130), and generates a transceiving switching control signal for isolating a transmission signal outputted from the transmitter when switching a receiving signal to a receiver. A transceiving controller(140) has a crosstalk elimination switch which isolates the transmission signal according to the transceiving switching control signal.
Abstract translation: 提供了一种用于消除UWB（超宽带）系统中的收发切换串扰的射频（射频）收发器，用于隔离信号，使收发信机在接收模式下工作时不会从发射机输出信号，从而消除串扰 的发送信号。 控制信号发生器连接在发射器和开关（130）之间，并且当将接收信号切换到接收器时，产生用于隔离从发射器输出的发送信号的收发切换控制信号。 收发控制器（140）具有串扰消除开关，其根据收发切换控制信号隔离发送信号。
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