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公开(公告)号：KR1020160035925A
公开(公告)日：2016-04-01
申请号：KR1020140127902
申请日：2014-09-24
Applicant: 한국전자통신연구원
CPC classification number: H04J14/0298 , H04L27/2602 , H04L27/2613 , H04L27/2655 , H04L27/2697
Abstract: 광가입자망에서의직교주파수분할다중신호전송방법및 그장치가개시된다. 본발명의일 실시예에따른광가입자망에서의직교주파수분할다중신호전송방법은수동형광가입자망의매체접근제어계층으로부터직교주파수분할다중방식기반의수동형광가입자망의물리계층으로전달되는매체접근제어프레임을이용하여매체접근제어프레임을물리레벨프리앰블을포함한직교주파수분할다중프레임으로변환하는단계와, 변환된직교주파수분할다중프레임을전송하는단계를포함한다.
Abstract translation: 公开了在到家庭（FTTH）网络的光纤中使用的正交频分复用（OFDM）信号发送方法及其装置。 根据本发明的实施例，正交频分多路复用信号发送方法包括以下步骤：使用从手动FTTH网络的媒体接入控制层级发送到基于OFDM的物理层级的媒体接入控制帧 手动FTTH网络，将媒体接入控制帧转换为包括物理级别前同步码的OFDM帧; 以及发射所转换的OFDM帧。
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公开(公告)号：KR101218401B1
公开(公告)日：2013-01-18
申请号：KR1020080122520
申请日：2008-12-04
Applicant: 한국전자통신연구원
Abstract: 본 발명은 데이터의 시스템을 검출할 수 있는 패킷 송수신 방법 및 장치에 관한 것이다. 본 발명의 패킷 수신 방법은, 수신될 데이터에 대한 시스템에 대응되는 실수부와 허수부의 조합 패턴으로 결정된 부반송파를 수신하는 단계; 상기 부반송파의 실수부 및 허수부의 크기를 확인하는 단계; 및 상기 확인된 실수부 및 허수부의 크기를 이용하여 상기 실수부와 허수부의 조합 패턴을 확인하여 상기 시스템을 판단하는 단계를 포함한다. 본 발명에 의하면 통신망을 통해 데이터를 주고받을 때 기존 시스템에 대한 호환성을 유지하면서 새로운 시스템에 의해 전송되는 데이터에 대한 시스템 검출을 용이하게 수행할 수 있는 효과가 있다.
OFDM(Orthogonal Frequency Division Multiplexing), 패킷, 시스템, 실수부, 허수부-
公开(公告)号：KR1020120129174A
公开(公告)日：2012-11-28
申请号：KR1020110047274
申请日：2011-05-19
Applicant: 한국전자통신연구원
CPC classification number: G06F7/24 , H03M13/395 , H04B7/0413 , H04L25/0202
Abstract: PURPOSE: A method for selecting a plurality of matrixes and reception apparatus using the same are provided to obtain minimum values by gradually search a minimum matrix from an MSB(Most Significant Bit) to an LSB(Least Significant Bit). CONSTITUTION: A reception circuit(520) receives a received signal from a transmission apparatus. A matrix determination unit(540) determines the number M of matrixes expressed as the number B of bits based on a channel which receives the received signal. The matrix determination unit selects the matrixes from the number M to the number N. A restoration unit(550) restores the transmission signal of the transmission apparatus from the received signal based on the number N of the matrixes. [Reference numerals] (520) Reception circuit; (530) Channel estimating unit; (540) Matrix determination unit; (550) Restoration unit
Abstract translation: 目的：提供一种用于选择多个矩阵的方法和使用该矩阵的接收装置，以通过从MSB（最高有效位）到LSB（最低有效位）逐渐搜索最小矩阵来获得最小值。 构成：接收电路（520）从发送装置接收接收信号。 矩阵确定单元（540）基于接收到接收到的信号的信道来确定表示为比特数B的矩阵的数量M. 矩阵确定单元从数字M到数字N选择矩阵。恢复单元（550）基于矩阵的数目N从接收到的信号恢复发送装置的发送信号。 （附图标记）（520）接收电路; （530）信道估计单元; （540）矩阵确定单元; （550）修复单位
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公开(公告)号：KR101201202B1
公开(公告)日：2012-11-15
申请号：KR1020080125781
申请日：2008-12-11
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0608 , H04B1/18 , H04B2001/0416
Abstract: 본 발명은 무선 통신 시스템에서 신호의 송신 장치에 관한 것으로, 특히 무선 신호의 송신 장치에 관한 것이다.
본 발명에서는 신호 도달거리를 향상시킬 수 있고, 신호대 잡음비에 따라 적응적으로 송신 전력을 제어하기 위한 송/수신 장치를 제공한다.
본 발명의 일 실시 예에 따른 송신 장치는, 무선 통신 시스템에서 데이터 송신 장치로, 송신할 신호를 요구되는 전력 레벨로 증폭하는 전력 증폭기 이후에 연결되는 외부 증폭기와, 상기 전력 증폭기에서 증폭된 신호를 모드 제어 신호에 근거하여 상기 안테나로 직접 출력하거나 상기 외부 증폭기를 통해 증폭하도록 하는 송신 선택기와, 수신 장치로부터 제공되는 신호의 수신 신호의 전력 레벨을 미리 결정된 전력 레벨과 비교하여 상기 외부 증폭기의 동작 여부를 결정하는 상기 모드 신호를 생성하는 모드 선택기를 포함한다.
RF 프론트엔드 설계 방법 및 장치, 적응형 RF 도달 거리 확장, 외부 저잡음 증폭기, 송신 파워 엠프, 이득 안테나, 자동 이득 조절, 수신 신호 강도-
公开(公告)号：KR1020120091494A
公开(公告)日：2012-08-20
申请号：KR1020100133436
申请日：2010-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04L27/0012 , H04L5/0023 , H04L5/0091 , H04L25/0226 , H04L27/2602 , H04L27/2675 , H04L27/2697 , H04L27/20 , H04B7/0413 , H04L27/22 , H04W84/12
Abstract: PURPOSE: A method for detecting signals in a wireless local area network system and an apparatus thereof are provided to reduce total packet errors due to a HT mode detection error by efficiently and accurately detecting HT SIG field signals. CONSTITUTION: A digital signal is converted by receiving a radio signal. FFT(Fast Fourier Transform) is performed for a digital signal. A channel compensation process is performed for a FFT result. A constellation demapping process is performed for a channel compensation result. The constellation demapping result is decoded. It is determined whether the radio signal is a modulated signal by Q-BPSK(Quadrature Binary Phase Shift Keying) constellation through the FFT result. The determination process is performed based on autocorrelation between the FFT result of the radio signal and the FFT result of an L-SIG(Legacy Signal).
Abstract translation: 目的：提供一种用于检测无线局域网系统中的信号的方法及其装置，以通过有效和准确地检测HT SIG场信号来减少由HT模式检测误差引起的总包错误。 构成：通过接收无线电信号来转换数字信号。 对数字信号进行FFT（快速傅里叶变换）。 对FFT结果执行信道补偿处理。 执行信道补偿结果的星座解映射处理。 星座解映射结果被解码。 通过FFT结果确定无线电信号是否是通过Q-BPSK（正交二进制相移键控）星座的调制信号。 基于无线信号的FFT结果与L-SIG（旧信号）的FFT结果之间的自相关来进行判定处理。
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Patent Agency Ranking
公开(公告)号：KR1020120071760A
公开(公告)日：2012-07-03
申请号：KR1020100133439
申请日：2010-12-23
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/00
Abstract: PURPOSE: A synchronization acquisition apparatus in a wireless communication system and method thereof are provided to simplify hardware by using the addition and subtraction of a signal in system configuration. CONSTITUTION: A signal reception unit(810) receives data and a signal sequence from each channel. A synchronization estimation point tracing unit(820) traces the repeated period of a signal line according to a repeated pattern for each channel. The synchronization estimation tracing unit traces synchronization estimation point related to each channel from the termination point of the repeated pattern. A synchronization acquisition unit(830) acquires a synchronization point by searching a starting point of a new signal line or the repetition end point of the signal line.
Abstract translation: 目的：提供一种无线通信系统中的同步获取装置及其方法，以便通过在系统配置中使用信号的相加和减法来简化硬件。 构成：信号接收单元（810）从每个通道接收数据和信号序列。 同步估计点跟踪单元（820）根据每个信道的重复模式跟踪信号线的重复周期。 同步估计跟踪单元从重复模式的终止点跟踪与每个信道相关的同步估计点。 同步获取单元（830）通过搜索信号线的新信号线或重复端点的起点来获取同步点。
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公开(公告)号：KR1020120071758A
公开(公告)日：2012-07-03
申请号：KR1020100133437
申请日：2010-12-23
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/00 , H04L27/2655 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2668
Abstract: PURPOSE: A synchronization acquiring apparatus in a wireless system is provided to improve the performance of a wireless communication system in low SNR(Signal to Noise Ratio) or fading channel environment by using signals of a repeated pattern. CONSTITUTION: A signal reception unit(710) receives a signal sequence transmitted from a repeated pattern. A synchronization estimation point tracing unit(720) calculates accumulated sum values, accumulated difference values, and a difference value between the accumulated sum values and the accumulated difference values. The synchronization estimation point tracing unit traces a synchronization estimation point by comparing the difference value with the difference value between the accumulated sum values and the accumulated difference values. A signal line is repeated in a period according to the repeated pattern. A synchronization acquisition unit(730) acquires a synchronization point based on the synchronization estimation point.
Abstract translation: 目的：提供无线系统中的同步获取装置，通过使用重复模式的信号来提高低SNR（信噪比）或衰落信道环境中的无线通信系统的性能。 构成：信号接收单元（710）接收从重复模式发送的信号序列。 同步估计点跟踪单元（720）计算累计和值，累积差值，以及累积和值和累加差值之间的差值。 同步估计点跟踪单元通过将差值与累积和值和累积差值之间的差值进行比较来跟踪同步估计点。 根据重复模式在一段时间内重复信号线。 同步获取单元（730）基于同步估计点获取同步点。
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公开(公告)号：KR1020120070481A
公开(公告)日：2012-06-29
申请号：KR1020110058696
申请日：2011-06-16
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and a method for loop-back in a wireless communication system are provided to implement the loop-back by using simplified logic without an additional memory according to the characteristic of a media access control(MAC) layer. CONSTITUTION: If a loop-back mode is set, an MAC processing part transmits user data and a controlling frame. A loop-back part(143) generates the response frame of a receiver with respect to user data and controlling messages from the MAC processing part and feeds-back the response frame of the receiver to the MAC processing part. Unless the loop-back mode is activated, a physical layer(142) receives the user data and the controlling frame of the MAC processing part and transmits the user data and the controlling frame to a wireless channel.
Abstract translation: 目的：提供一种用于在无线通信系统中循环的装置和方法，以根据媒体访问控制（MAC）层的特性，通过使用简化的逻辑而不需要额外的存储器实现环回。 构成：如果设置了环回模式，MAC处理部分发送用户数据和控制帧。 环回部分（143）相对于用户数据产生接收机的响应帧，并且控制来自MAC处理部分的消息并将接收机的响应帧反馈到MAC处理部分。 除非循环模式被激活，物理层（142）接收用户数据和MAC处理部分的控制帧，并将用户数据和控制帧发送到无线信道。
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公开(公告)号：KR1020100067295A
公开(公告)日：2010-06-21
申请号：KR1020080125782
申请日：2008-12-11
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2662 , H04L27/2657 , H04L27/2675 , H04L27/265
Abstract: PURPOSE: A timing offset estimating apparatus and a method in a wireless telecommunications system are provided to gain an efficient performance by switching two methods according to a signal-noise ratio. CONSTITUTION: A preamble base CFO estimating unit(104) estimates a carrier frequency offset based on a preamble signal. A preamble base CFO base timing offset estimating unit(107) estimates the timing offset using a presumed CFO value based on the preamble. A pilot base timing offset estimating unit(106) estimates a timing offset value using a pilot signal in a frequency domain. A multiplexer(108) selects one of two signals according to a control of the control unit. The controlling unit sanctions the control signal to the multiplexer. A timing offset compensator(109) compensates the timing offset using a received data and the offset value.
Abstract translation: 目的：提供无线电信系统中的定时偏移估计装置和方法，以通过根据信噪比切换两种方法来获得有效的性能。 构成：前导码基站CFO估计单元（104）基于前导码信号估计载波频率偏移。 前导码基站CFO基本定时偏移估计单元（107）使用基于前导码的推定CFO值来估计定时偏移。 导频基准定时偏移估计单元（106）使用频域中的导频信号来估计定时偏移值。 多路复用器（108）根据控制单元的控制选择两个信号之一。 控制单元对多路复用器进行处理。 定时偏移补偿器（109）使用接收到的数据和偏移值补偿定时偏移。
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公开(公告)号：KR1020090063759A
公开(公告)日：2009-06-18
申请号：KR1020070131241
申请日：2007-12-14
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for processing an aggregation frame in a wireless network are provided to facilitate an encoding process and a decoding process in a CCMP(Counter-mode/CBC-MAC protocol) block by delaying data between MPDU(MAC Protocol Data Unit)s and synchronizing the data with the data information. A synchronization information storage FIFO(602) stores synchronization information. A MPDU storage FIFO(603) stores de-aggregated MPDU data. An aggregation frame processor(601) de-aggregates the received aggregation frame, stores the de-aggregated MPDU data in the MPDU storage FIFO, and stores the synchronization information in the synchronization information storage FIFO. A controller(604) reads the synchronization information from the synchronization information storage FIFO and controls the MPDU storage FIFO according to the synchronization information to transmit the data to the CCMP decoding unit.
Abstract translation: 提供了一种用于处理无线网络中的聚合帧的装置和方法，以通过在MPDU（MAC协议数据单元）之间延迟数据来促进CCMP（计数器/ CBC-MAC协议）块中的编码处理和解码处理， 并将数据与数据信息同步。 同步信息存储FIFO（602）存储同步信息。 MPDU存储FIFO（603）存储去聚合的MPDU数据。 聚合帧处理器（601）对接收到的聚合帧进行聚合，将去聚合的MPDU数据存储在MPDU存储FIFO中，并将同步信息存储在同步信息存储FIFO中。 控制器（604）从同步信息存储FIFO读取同步信息，并根据同步信息控制MPDU存储FIFO，以将数据发送到CCMP解码单元。
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