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公开(公告)号：KR100429898B1
公开(公告)日：2004-05-03
申请号：KR1020010071391
申请日：2001-11-16
Applicant: 한국전자통신연구원
IPC: H03H17/02
Abstract: PURPOSE: An inverse sinc filter is provided to be capable of compensating frequency distortion by digital/analog conversion at a specific frequency band. CONSTITUTION: An inverse sinc function approximation part(200) approximates an input signal into an inverse sinc function format corresponding to a control coefficient and generates an approximated inverse sinc function. An adder adds the approximated inverse sinc function with the input signal and compensates frequency distortion of a sinc type in the input signal. The inverse sinc function approximation part includes a delay(202) for delaying the input signal(IN) by one sampling time, a difference part(204) for obtaining a difference between the delayed input signal and the input signal, and a multiplier(206) for multiplying an output of the difference part and the control coefficient to output a multiplied result as the approximated inverse sinc function.
Abstract translation: 目的：提供反正弦滤波器，能够通过特定频段的数字/模拟转换来补偿频率失真。 构成：反正弦函数近似部分（200）将输入信号近似成与控制系数相对应的反正弦函数格式，并产生近似的反正弦函数。 加法器将近似的反正弦函数与输入信号相加，并补偿输入信号中正弦类型的频率失真。 反正弦函数近似部分包括用于将输入信号（IN）延迟一个采样时间的延迟（202），用于获得延迟的输入信号和输入信号之间的差的差分部分（204），以及乘法器（206） ），用于将差分部分的输出与控制系数相乘以输出相乘结果作为近似的反正弦函数。
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公开(公告)号：KR1020030090306A
公开(公告)日：2003-11-28
申请号：KR1020020028361
申请日：2002-05-22
Applicant: 한국전자통신연구원
IPC: H04L27/34
Abstract: PURPOSE: A modulator for performing home data communication is provided to distribute uniformly the power within a communication band by using a non-Nyquist filter. CONSTITUTION: A modulator for performing home data communication includes a constellation mapper(410), the first non-Nyquist filter(420), the second non-Nyquist filter(450), a mixer(481), a HAM frequency remover(484), and a D/A converter(485). The constellation mapper(410) receives input data and divides the input data into I and Q elements. The first non-Nyquist filter(420) has an infinite impulse response to transmit signals of an I channel of the constellation mapper(410). The second non-Nyquist filter(450) has an infinite impulse response to transmit signals of a Q channel of the constellation mapper(410). The mixer(481) is used for shifting the I channel data and the Q channel data to an intermediate frequency band and adding the I channel data to the Q channel data. The HAM frequency remover(484) is used for removing the frequency of a HAM signal from an output signal of the mixer(481). The D/A converter(485) is used for converting a digital signal of the HAM frequency remover(484) to an analog signal.
Abstract translation: 目的：提供一种用于执行家庭数据通信的调制器，以通过使用非奈奎斯特滤波器来均匀地分配通信频带内的功率。 构成：用于执行本地数据通信的调制器包括星座映射器（410），第一非奈奎斯特滤波器（420），第二非奈奎斯特滤波器（450），混频器（481），HAM频率去除器（484） ，和D / A转换器（485）。 星座映射器（410）接收输入数据并将输入数据分成I和Q元素。 第一非奈奎斯特滤波器（420）具有对星座映射器（410）的I信道的发射信号的无限脉冲响应。 第二非奈奎斯特滤波器（450）具有对星座映射器（410）的Q信道的发射信号的无限脉冲响应。 混频器（481）用于将I信道数据和Q信道数据移位到中频带，并将I信道数据与Q信道数据相加。 HAM频率去除器（484）用于从混合器（481）的输出信号中去除HAM信号的频率。 D / A转换器（485）用于将HAM频率去除器（484）的数字信号转换为模拟信号。
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公开(公告)号：KR1020150128434A
公开(公告)日：2015-11-18
申请号：KR1020140055811
申请日：2014-05-09
Applicant: 한국전자통신연구원
CPC classification number: H04B10/556 , H04B10/272 , H04B10/548 , H04L27/2626 , H04L27/2627
Abstract: OFDMA-PON의상향전송용광 전송장치및 방법이개시된다. 광송신장치는기저대역 OFDM(Orthogonal frequency division multiple) 신호를출력하는디지털신호처리장치; 디더링톤(Dithering tone)을생성하는톤 생성기; 디더링톤과기저대역 OFDM 신호를합성하는합성기; 및디더링톤과합성된기저대역 OFDM 신호를기반으로캐리어광보다스펙트럼의폭이증가된출력광을출력하는광원을포함할수 있다.
Abstract translation: 公开了一种用于正交频分多址无源光网络（OFDMA-PON）的上行链路传输的光传输的装置和方法。 光传输装置包括：数字信号处理器，用于输出基带正交频分复用（OFDM）信号; 用于产生抖动音的抖动音发生器; 合成器，用于合成抖动色调和基带OFDM信号; 以及用于输出光谱宽度高于基于抖动色调的载波的输出光的光源和合成的基带OFDM信号。
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Patent Agency Ranking
公开(公告)号：KR101286962B1
公开(公告)日：2013-07-23
申请号：KR1020100036199
申请日：2010-04-20
Applicant: 한국전자통신연구원
Abstract: 본 발명은 무선 통신 시스템에서 패킷 종료 시점 검출 장치 및 방법에 관한 것으로, 특히 다중 안테나 및 직교 주파수 분할 다중화 방식 (MIMO-OFDM) 을 사용하는 무선 통신 시스템에서 패킷 종료 지점 검출 장치 및 방법에 관한 것이다.
본 발명에서는 모뎀 구현의 복잡도를 줄일 수 있고, 수신 감도를 증가 시킬 수 있으며, 처리율을 증가시킬 수 있다.
본 발명의 일 실시 예에 따른 종료 장치는, 무선 통신시스템의 패킷 종료 시점 검출 장치에 있어서, 외부로부터 신호를 수신하여 기저대역 신호로 변환하고 아날로그 디지털 변환을 하며 디지털 프런트 엔드를 수행하는 신호 수신부와, 상기 신호 수신부의 입력을 저장하는 입력 저장부와, 상기 입력저장부의 출력을 제공받아 주파수 옵셋을 추정하는 주차수 옵셋 추정부와, 상기 주파수 옵셋의 상관값과 순환전치를 계산하는 옵셋 상관기와, 상기 순환전치의 자기 상관값을 계산하는 순환전치 자기 상관부와, 상기 자기 상관값을 이용하여 패킷의 종료시점을 검사하는 패킷 종료 검출기를 포함한다.-
公开(公告)号：KR1020120081040A
公开(公告)日：2012-07-18
申请号：KR1020120003159
申请日：2012-01-10
Applicant: 한국전자통신연구원
IPC: H04L27/18
CPC classification number: H04L27/2003 , H04L5/0053
Abstract: PURPOSE: A method and apparatus for repeatedly transmitting a symbol in a wireless communication system are provided to maintain compatibility with a conventional wireless telecommunication system by transmitting a frame with symbol repetition. CONSTITUTION: A transmitter generates a first signal field(S1100). The first signal field is an L-SIG(Legacy Signal) field. A second signal field is formed by reiterating a symbol of the first signal field(S1105). A second signal field is an N-SIG(New Signal) field. The second signal field is formed into a structure of including repeated symbols through a modulation method. A frame including the first signal field, the second signal field, and a data field is transmitted(S1110).
Abstract translation: 目的：提供一种用于在无线通信系统中重复发送符号的方法和装置，以通过发送具有符号重复的帧来保持与常规无线电信系统的兼容性。 构成：发射机产生第一个信号场（S1100）。 第一信号字段是L-SIG（Legacy Signal）字段。 通过重复第一信号字段的符号来形成第二信号字段（S1105）。 第二信号字段是N-SIG（新信号）字段。 第二信号场通过调制方式形成包括重复码元的结构。 发送包括第一信号字段，第二信号字段和数据字段的帧（S1110）。
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公开(公告)号：KR1020120070482A
公开(公告)日：2012-06-29
申请号：KR1020110058697
申请日：2011-06-16
Applicant: 한국전자통신연구원
CPC classification number: H04W72/044 , H04W28/16 , H04W72/0493
Abstract: PURPOSE: Fixed allocation apparatus and method in a wireless communication system are provided to increase the using efficiency of a region for fixed allocation by omitting the occurrence of collisions in the process of wirelessly transmitting and receiving data. CONSTITUTION: A user requesting resource confirming part(310) confirms the size of a user requesting resource. An available resource scanning part(320) scans available resources for fixed allocation in a fixed allocation region. A resource allocating part(330) forwardly or backwardly fixed allocates resources of the scanned resources which satisfy the desired size of the user requesting resource.
Abstract translation: 目的：提供无线通信系统中的固定分配装置和方法，通过省略在无线发送和接收数据的过程中发生冲突，提高固定分配区域的使用效率。 构成：请求资源确认部（310）的用户确认请求资源的用户的大小。 可用资源扫描部分（320）扫描固定分配区域中的固定分配的可用资源。 向前或向后固定的资源分配部分（330）分配满足用户请求资源的期望大小的扫描资源的资源。
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公开(公告)号：KR101077551B1
公开(公告)日：2011-10-28
申请号：KR1020090126225
申请日：2009-12-17
Applicant: 한국전자통신연구원
Abstract: 본발명의일 실시예에따른수신장치는, 단말의동작에따라캐리어를검출하는캐리어검출부; 상기캐리어검출부에의해검출된캐리어에따라상기단말의동작모드를결정하는수신단유한상태장치; 상기수신단유한상태장치에의해결정된동작모드가캐리어센싱을위한휴지모드인경우에는제1 클록을제공하고, 데이터수신을위한활성모드인경우에는상기제1 클록보다빠른제2 클록을제공하는클록선택부; 및상기클록선택부로부터제공된클록을이용해아날로그/디지털변환을수행하는아날로그/디지털변환부를포함한다.
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公开(公告)号：KR1020110070713A
公开(公告)日：2011-06-24
申请号：KR1020100036203
申请日：2010-04-20
Applicant: 한국전자통신연구원
CPC classification number: H04W72/10 , H04W74/0808 , H04W74/085
Abstract: PURPOSE: A priority assignment apparatus by the exchange of order information is provided to improve the efficiency of a network. CONSTITUTION: A priority assignment apparatus includes a data Input unit(110), an order assignment unit(130), an arbiter(140), and a data output unit(120). The data Input unit receives order information from the other terminal. The order assignment unit assigns the order information of the terminal with order information data. The arbiter arbitrates the data of the order assignment unit. The data output unit outputs the order information of the terminal.
Abstract translation: 目的：提供交换订单信息的优先级分配装置，以提高网络的效率。 构成：优先分配装置包括数据输入单元（110），订单分配单元（130），仲裁器（140）和数据输出单元（120）。 数据输入单元从另一个终端接收订单信息。 订单分配单元将订单信息数据分配给终端的订单信息。 仲裁者仲裁订单分配单元的数据。 数据输出单元输出终端的订单信息。
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