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公开(公告)号：KR1020150084300A
公开(公告)日：2015-07-22
申请号：KR1020140004165
申请日：2014-01-13
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2626
Abstract: OFDM(Orthogonal Frequency Division Multiplexing) 무선전송시스템에서, 전송하고자하는데이터에대한데이터레이트가설정값에해당하는경우, 파일럿톤의파워를제1 설정배수만큼증가시켜설정한다. 그리고이러한파일럿톤을포함하는전송신호를생성하여송신한다.
Abstract translation: OFDM（正交频分复用）无线传输系统技术领域本发明涉及一种OFDM（正交频分复用）无线传输系统，其中如果要传输的数据的数据速率等于设定值，则导频音功率增加设定值1的倍数。 生成并发送包含导频音的发送信号。
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公开(公告)号：KR101268581B1
公开(公告)日：2013-05-28
申请号：KR1020090112257
申请日：2009-11-19
Applicant: 한국전자통신연구원
IPC: H04L27/36
CPC classification number: H04L25/4902 , H04L25/4917 , H04L27/02
Abstract: 이러한그룹변조방법을이용하는송신장치는최종정보비트를생성하여수신장치로전송한다. 또한, 그룹변조방법을이용하는수신장치는전달받은수신신호를신호의에너지크기의순서를토대로복조한다.
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公开(公告)号：KR101257071B1
公开(公告)日：2013-04-22
申请号：KR1020090027098
申请日：2009-03-30
Applicant: 한국전자통신연구원
IPC: G01S5/02
Abstract: 본 발명은 센서 네트워크에서 소출력 WPAN/WBAN 센서의 위치추적을 위한 위치추적 장치 및 방법에 관한 것이다.
이러한 본 발명에 따른 위치추적 장치는 센서 네트워크 내에서 자신의 위치를 알고 있는 복수의 앵커 노드와 상기 자신의 위치를 모르는 적어도 하나의 센서 노드로부터 각각 인접한 노드의 거리 정보를 수집하고, 수집된 상기 인접 노드의 거리정보에 기초하여 상기 앵커 노드에 대한 최단 경로를 각각 계산하며, 위치를 알고 있는 제1 그룹의 노드와 위치를 모르는 제2 그룹의 노드를 각각 분류하여 상기 앵커 노드를 기준으로 상기 제2 그룹에서 상기 제1 그룹에 인접한 순으로 상기 센서 노드를 선정하고 순차적으로 위치 파악한다.
이로써, 본 발명에 다르면 센서 노드가 무작위로 조밀하게 분포하는 센서 네트워크에서 소수의 앵커 노드로 센서 노드의 위치를 낮은 복잡도로 구현하여 저전력으로 빠르고 정확하게 센서 노드의 위치를 추적하는 효과를 얻을 수 있다.
소출력, WPAN/WBAN, 센서 노드, 앵커 노드-
公开(公告)号：KR1020130029687A
公开(公告)日：2013-03-25
申请号：KR1020110093117
申请日：2011-09-15
Applicant: 한국전자통신연구원
CPC classification number: H04W56/0035 , H04W56/0085
Abstract: PURPOSE: A method for obtaining receipt synchronization in a near field communication system and a device thereof are provided to efficiently and easily obtain synchronization from a receiving signal formed with a frame structure including an STF(Short Training Field) having a repeated pattern. CONSTITUTION: A receiving device(11) includes a packet detecting unit(13), a gain control unit(14), first processing units(15,16), second processing units(17,18), and a timing synchronizing unit(19). The packet detecting unit detects a packet from a receiving signal based on a plurality of STF patterns. A gain control unit measures power based on the STF patterns and controls an amplification gain of the receiving signal based on the measured power. The first processing units perform frequency error estimation to the STF patterns of the receiving signal to obtain a phase error of each sample unit composing the STF patterns. The first processing units perform first frequency error estimation and compensation for correcting a frequency of the STF patterns based on the obtained phase error. The second processing units perform frequency error estimation to the STF patterns outputted after the first frequency error estimation and compensation to obtain a phase error of each sample unit composing the STF patterns. The second processing units correct the frequency of the STF patterns based on the obtained phase error. The timing synchronizing unit detect a frame timing by performing cross correlation to a predetermined number of STF patterns among the STF patterns outputted after the second frequency error estimation and compensation. [Reference numerals] (11) Receiving device; (12) Sampling unit; (13) Packet detecting unit; (14) Gain control unit; (15) First frequency error estimating unit; (16) First error correcting unit; (17) Second frequency error estimating unit; (18) Second error correcting unit; (19) Timing synchronizing unit; (20) Frame boundary detecting unit
Abstract translation: 目的：提供一种用于在近场通信系统及其装置中获得接收同步的方法，以便从包含具有重复模式的STF（Short Training Field）的帧结构的接收信号中有效地并且容易地获得同步。 构成：接收装置（11）包括分组检测单元（13），增益控制单元（14），第一处理单元（15,16），第二处理单元（17,18）和定时同步单元（19） ）。 分组检测单元基于多个STF模式从接收信号检测分组。 增益控制单元基于STF模式测量功率，并且基于测量的功率来控制接收信号的放大增益。 第一处理单元对接收信号的STF模式执行频率误差估计，以获得构成STF模式的每个采样单元的相位误差。 第一处理单元基于获得的相位误差执行第一频率误差估计和补偿，以校正STF模式的频率。 第二处理单元对在第一频率误差估计和补偿之后输出的STF模式执行频率误差估计，以获得构成STF模式的每个采样单元的相位误差。 第二处理单元基于获得的相位误差校正STF图案的频率。 定时同步单元通过对在第二频率误差估计和补偿之后输出的STF模式中的预定数量的STF模式进行互相关来检测帧定时。 （附图标记）（11）接收装置; （12）采样单元; （13）分组检测单元; （14）增益控制单元; （15）第一频率误差估计单元; （16）第一纠错单元; （17）第二频率误差估计单元; （18）第二纠错单元; （19）定时同步单元; （20）帧边界检测单元
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公开(公告)号：KR1020120071110A
公开(公告)日：2012-07-02
申请号：KR1020100132714
申请日：2010-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04W52/0216 , H04W52/0229 , Y02D70/21 , H04W48/08 , H04W48/16 , Y02D70/00
Abstract: PURPOSE: A base station, a terminal, and an operation method thereof are provided to support a terminal in a low power mode and to reduce power consumption of a terminal. CONSTITUTION: If a structure of a network is in a high-speed mode, a terminal is cooperated with a base station of the network(S103,S105). The terminal is converted into a low-speed mode(S107). The terminal is cooperated with the base station in the low-speed mode(S109). The terminal is converted into a low-power mode(S111). The terminal enters an active section(S113,S115).
Abstract translation: 目的：提供基站，终端及其操作方法，以支持低功率模式的终端并降低终端的功耗。 构成：如果网络的结构处于高速模式，则终端与网络的基站进行协作（S103，S105）。 终端被转换成低速模式（S107）。 终端以低速模式与基站协作（S109）。 终端被转换成低功率模式（S111）。 终端进入有效部分（S113，S115）。
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Patent Agency Ranking
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：KR1020110055302A
公开(公告)日：2011-05-25
申请号：KR1020090112257
申请日：2009-11-19
Applicant: 한국전자통신연구원
IPC: H04L27/36
CPC classification number: H04L25/4902 , H04L25/4917 , H04L27/02
Abstract: PURPOSE: A block-coded group modulation method and a transmitter and a receiver using the same are provided to increase the data process rate by increasing the number of situations by the energy level order. CONSTITUTION: A grouping part(110) groups the inputted payload data bit stream by n bits. A mapping(120) unit maps the final information bit to the sequence which decides the energy level. A processing unit(130) generates an impulse signal by shaping the pulse. A communication unit(140) transmits the varied carrier signal to a receiver(200) by the energy level order. The receiver(200) restores the payload data bit stream from the received signal from a transmitter(100). A detection unit(210) detects pulse energy in the pulse section.
Abstract translation: 目的：提供块编码组调制方法以及使用其的发送器和接收器，以通过以能级顺序增加情况数来增加数据处理速率。 构成：分组部分（110）将输入的有效载荷数据比特流分组n位。 映射（120）单元将最终信息位映射到决定能级的序列。 处理单元（130）通过对脉冲进行整形来产生脉冲信号。 通信单元（140）通过能级顺序将变化的载波信号发送到接收机（200）。 接收器（200）从发送器（100）的接收信号中恢复净荷数据比特流。 检测单元（210）检测脉冲部分中的脉冲能量。
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公开(公告)号：KR1020100111628A
公开(公告)日：2010-10-15
申请号：KR1020100031660
申请日：2010-04-07
Applicant: 한국전자통신연구원
CPC classification number: H04L25/4902
Abstract: PURPOSE: A group modulating method and a receiving apparatus using the same are provided to correct errors by referring to a block code. CONSTITUTION: A receiving apparatus groups payload data bit stream(S601). A block codeword set which is composed of codeword according to a pulse-arranging combination is generated(S602). The receiving apparatus extracts candidate code word from the block codeword set(S603). The receiving apparatus selects arbitrary codeword from a candidate codeword set(S604). The receiving apparatus extracts 2^N codeword based on the selected codeword(S605). The receiving apparatus rearranges the candidate codeword a hamming distance between adjacent codeword(S606).
Abstract translation: 目的：提供组调制方法和使用其的接收装置，以通过参考块码来校正错误。 构成：接收装置分组净荷数据比特流（S601）。 生成由符号脉冲排列组合的码字构成的块码字集（S602）。 接收装置从块码字集合中提取候选码字（S603）。 接收装置从候选码字集合中选择任意码字（S604）。 接收装置根据选择的码字提取2 ^ N个码字（S605）。 接收装置将候选码字重新排列相邻码字之间的汉明距离（S606）。
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公开(公告)号：KR1020100067582A
公开(公告)日：2010-06-21
申请号：KR1020090027097
申请日：2009-03-30
Applicant: 한국전자통신연구원
IPC: H04L7/033
CPC classification number: H04L7/027
Abstract: PURPOSE: A sampling apparatus and a method thereof in a wireless telecommunication system is provided to obtain as same sampling effect as the high-speed sampling, even using a low-speed sampling device by a method of inserting a delay unit for delaying with a predetermined value into a signal receiving process. CONSTITUTION: A delay unit(510) delays a received signal to a block unit. A delay route selector(520) controls the delay unit for selectively applying a plurality of delay paths to the each block. A sampler(530) implements the sampling on the block delayed by the delay unit. A signal processing unit(540) merges two or more sampling blocks sampled by the sampler. A timing tracking unit(550) tracks a received timing using the merged signal. The delay routes are generated independently for the predetermined delay values.
Abstract translation: 目的：提供一种无线电信系统中的采样装置及其方法，以获得与高速采样相同的采样效果，即使使用低速采样装置，通过插入延迟单元以延迟预定的方式 值进入信号接收过程。 构成：延迟单元（510）将接收到的信号延迟到块单元。 延迟路由选择器（520）控制延迟单元，用于选择性地对每个块应用多个延迟路径。 采样器（530）对由延迟单元延迟的块进行采样。 信号处理单元（540）合并由采样器采样的两个或更多采样块。 定时跟踪单元（550）使用合并的信号跟踪接收到的定时。 对于预定的延迟值，独立地生成延迟路由。
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公开(公告)号：KR1020100018680A
公开(公告)日：2010-02-18
申请号：KR1020080077278
申请日：2008-08-07
Applicant: 한국전자통신연구원
CPC classification number: H03G3/3052 , H03G3/3089 , H04B1/71637
Abstract: PURPOSE: An automatic gain control method and a receiver thereof are provided to maintain a stable reception status in the various radio environment by regularly maintaining the gain of an impulse signal inputted with ADC. CONSTITUTION: The variable gain amplification unit amplifies the gain of an impulse signal received. A quantized value is outputted by processing a quantization about the impulse signal with an amplified gain. Statistical information is generated by using the quantized value. The gain control width is determined based on the statistical information. The amplifying gain of the variable gain amplification unit is adjusted based on the gain control width. The frequency band of the received impulse signal is transformed to the base band. The matching filtering process between the quantized value and the digital impulse signal is operated.
Abstract translation: 目的：提供一种自动增益控制方法及其接收机，通过定期维持输入ADC的脉冲信号的增益，在各种无线电环境中保持稳定的接收状态。 构成：可变增益放大单元放大所接收脉冲信号的增益。 通过用放大的增益处理关于脉冲信号的量化来输出量化值。 使用量化值生成统计信息。 增益控制宽度根据统计信息确定。 基于增益控制宽度来调整可变增益放大单元的放大增益。 接收的脉冲信号的频带被变换为基带。 操作量化值与数字脉冲信号之间的匹配滤波处理。
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