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公开(公告)号：KR1020120068668A
公开(公告)日：2012-06-27
申请号：KR1020110048676
申请日：2011-05-23
Applicant: 한국전자통신연구원
IPC: G01S5/16
Abstract: PURPOSE: A location measuring apparatus and method are provided to precisely measure positions using information provided by a visible-ray wireless communication device and an image sensor and the inclination of the image sensor. CONSTITUTION: A location measuring method comprises the steps of: acquiring the focal distance of an image sensor(S100), acquiring virtual coordinates(S110), acquiring a first virtual light-source distance on the image sensor tilting based on the virtual coordinates(S120), measuring the inclination of the image sensor(S130), acquiring a virtual height(S140), calculating a second virtual light-source distance(S150), acquiring first and second virtual distances(S160), calculating first and second distances(S170), and acquiring the position of the image sensor(S180).
Abstract translation: 目的：提供一种位置测量装置和方法，以使用由可见光无线通信装置和图像传感器提供的信息以及图像传感器的倾斜来精确地测量位置。 构成：位置测量方法包括以下步骤：获取图像传感器的焦距（S100），获取虚拟坐标（S110），基于虚拟坐标获取图像传感器倾斜上的第一虚拟光源距离（S120 ），测量图像传感器的倾斜度（S130），获取虚拟高度（S140），计算第二虚拟光源距离（S150），获取第一和第二虚拟距离（S160），计算第一和第二距离（S170 ），并获取图像传感器的位置（S180）。
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公开(公告)号：KR1020120036254A
公开(公告)日：2012-04-17
申请号：KR1020110061090
申请日：2011-06-23
Applicant: 한국전자통신연구원
IPC: H04B10/116 , H04B10/524 , H04B10/50 , H04L27/00
CPC classification number: H04B10/116 , H04B10/502 , H04B10/524 , H04L27/00
Abstract: PURPOSE: A visible ray wireless communication transceiving device and a method thereof are provided to reduce lowering of brightness of a light device or a visible ray source compared to an OOK(On-Off Keying) modulation method or a PPM(Pulse Position Modulation) method. CONSTITUTION: A bit converting unit receives VLC(Visible Light Communications) source data(S210). A setting unit sets a pulse width control process of pulse width modulation within a unit time period(S220). The bit converting unit converts symbols of m bits into symbols of 2m bits according to a bit converting table(S230). A modulation unit generates the converted symbols of 2m into a PWM signal(S240). An LED light source module generates a visible ray modulation signal corresponding to light of LEDs(S250).
Abstract translation: 目的：提供可视射线无线通信收发装置及其方法，以便与OOK（开 - 关键控）调制方法或PPM（脉冲位置调制）方法相比，减少了光装置或可见光源的亮度降低 。 构成：位转换单元接收VLC（可视光通信）源数据（S210）。 设定单元在单位时间内设定脉冲宽度调制的脉冲宽度控制处理（S220）。 位转换单元根据位转换表将m位的符号转换为2m位的符号（S230）。 调制部将2m的转换符号生成为PWM信号（S240）。 LED光源模块生成对应于LED的光的可见光线调制信号（S250）。
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公开(公告)号：KR1020110031877A
公开(公告)日：2011-03-29
申请号：KR1020100013303
申请日：2010-02-12
Applicant: 한국전자통신연구원
IPC: H04B10/116 , H04B10/50 , H04B10/60
CPC classification number: H04L1/0042 , H04B10/116 , H04L1/0046 , H04L1/0056
Abstract: PURPOSE: A transmitter and receiver for visible light wireless communication and a method thereof are provided to minimize the luminance difference between lightings for a visible light signal in a visible light wireless communication device. CONSTITUTION: A source code recognition unit(130) recognizes source bit columns as source codes of a first coefficient, wherein the source codes are formed by bit unit. A line coding unit(140) encodes each source code as an encoding code of a second coefficient which is larger than the first coefficient. The encoding code includes the bits corresponding to the coefficient which is one of two natural numbers.
Abstract translation: 目的：提供用于可见光无线通信的发射机和接收机及其方法，以使可见光无线通信设备中的可见光信号的发光之间的亮度差最小化。 构成：源代码识别单元（130）将源位列识别为第一系数的源代码，其中源代码由位单元形成。 行编码单元（140）将每个源代码编码为大于第一系数的第二系数的编码码。 编码代码包括对应于作为两个自然数之一的系数的位。
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公开(公告)号：KR1020100059570A
公开(公告)日：2010-06-04
申请号：KR1020080118385
申请日：2008-11-26
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A wireless memory device and a file copy method thereof are provided to noticeably reduce file copy time by performing an automatic file copy function among wireless memory devices. CONSTITUTION: A memory(110) stores data. A database(120) stores file information of the data of an allowed wireless memory device. A controller(140) receives file information of data stored in an adjacent wireless memory device among the allowed wireless memory devices and determines a file to copy using the file information. The controller receives a file of data to copy from the adjacent wireless memory device and copies the file in the memory. A wireless communication unit(130) performs wireless communication with the adjacent wireless memory device.
Abstract translation: 目的：提供一种无线存储器件及其文件复制方法，通过在无线存储器件之间执行自动文件复制功能来显着减少文件复制时间。 构成：存储器（110）存储数据。 数据库（120）存储允许的无线存储装置的数据的文件信息。 控制器（140）接收存储在所允许的无线存储设备中的相邻无线存储设备中的数据的文件信息，并使用文件信息确定要复制的文件。 控制器从相邻的无线存储设备接收要复制的数据文件，并将文件复制到存储器中。 无线通信单元（130）与相邻的无线存储设备进行无线通信。
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公开(公告)号：KR1020060131655A
公开(公告)日：2006-12-20
申请号：KR1020060053527
申请日：2006-06-14
Applicant: 한국전자통신연구원
CPC classification number: H04L12/12 , H04W74/08 , H04W76/27 , Y02D70/24 , Y02D70/25 , H04W84/02 , Y02D70/00
Abstract: A state control device of a cellular system and a controlling method are provided to control state transition of a terminal according to QoS(Quality of Service) and the type of a packet service, thus efficient use of radio resources is possible while power consumption is reduced. When the state of a terminal is set as an active state, a resource manager(410) allocates reverse and forward traffic channels to the terminal, and if the state is set as an idle state, the manager(410) enables the terminal to stop synchronous maintenance for the reverse traffic channel. When a sub state of the active-state terminal is set as a scheduling state, a scheduler(440) allocates resources of the reverse and forward traffic channels to the terminal according to QoS supported to the terminal, and when the sub state is set as a scheduling excluding state, the scheduler(440) enables the terminal to non-continuously transceive packet data through the reverse and forward traffic channels.
Abstract translation: 提供了一种蜂窝系统的状态控制装置和控制方法，以根据QoS（服务质量）和分组业务的类型来控制终端的状态转换，从而在减少功耗的同时有效利用无线电资源 。 当终端的状态被设置为活动状态时，资源管理器（410）向终端分配反向和正向业务信道，并且如果状态被设置为空闲状态，则管理器（410）使终端能够停止 反向业务信道的同步维护。 当活动状态终端的子状态被设置为调度状态时，调度器（440）根据终端所支持的QoS向终端分配反向和反向业务信道的资源，并且当子状态被设置为 调度器（440）使得终端能够通过反向和反向业务信道非连续地收发分组数据。
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Patent Agency Ranking
公开(公告)号：KR100530771B1
公开(公告)日：2005-11-23
申请号：KR1020020060937
申请日：2002-10-07
Applicant: 한국전자통신연구원
IPC: H04J11/00
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 직교주파수다중분할-코드분할다중액세스 시스템의 기지국 송신 장치 및 그 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은, OFDM-CDMA 시스템 기지국 송신 장치에서의 사용자 데이터 송신시, 사용자의 채널 환경을 고려하여 부반송파별로 수신된 SNR에 맞게 적응 변조를 수행함으로써, 데이터 송신을 효율적으로 할 수 있도록 하기 위한 OFDM-CDMA 시스템 기지국 송신 장치 및 그 방법을 제공하고자 함.
3. 발명의 해결방법의 요지
본 발명은, 직교주파수다중분할(OFDM)-코드분할다중액세스(CDMA) 시스템의 기지국 송신 장치에 있어서, 제 1 소정의 수를 가지는 사용자 데이터를 입력받아, 각 부반송파별 수신된 SNR(Signal to Noise Ratio)에 맞게 적응 변조를 수행하기 위한 적응변조수단; 상기 적응변조수단에서 직렬로 입력된 적응 변조된 상기 사용자 데이터를 병렬로 전환하기 위한 직/병렬전환수단; 상기 직/병렬전환수단으로부터 병렬로 적응 변조된 상기 사용자 데이터를 입력받아 동일 부반송파별로 모아 전달하기 위한 부반송파별모음수단; 상기 부반송파별모음수단으로부터 부반송파별로 상기 사용자 데이터를 전송받아, 사용자를 구분하기 위해 상기 사용자 데이터를 확산 변환하기 위한 확산변환수단; 상기 확산변환수단으로부터 상기 사용자 데이터를 입력받아, 역고속퓨리에 변환을 수행하여 해당 부반송파에 실어주기 위한 역고속퓨리에변환수단; 상기 역고속퓨리에변환수단으로부터 상기 사용자 데이터가 포함된 해당 부반송파를 입력받아 아날로그 데이터로 변환하기 위한 디지털/아날로그 변환수단; 및 상기 디지털/아날로그 변환수단으로부터 입력받은 아날로그 데이터를 무선주파수(RF)로 주파수 상승 변환하여 전송하기 위한 주파수 변환수단을 포함함.
4. 발명의 중요한 용도
본 발명은 직교주파수다중분할 시스템 등에 이용됨.-
公开(公告)号：KR1020040056976A
公开(公告)日：2004-07-01
申请号：KR1020020083727
申请日：2002-12-24
Applicant: 한국전자통신연구원
IPC: H04L27/26
Abstract: PURPOSE: An apparatus and a method for determining channel information in an OFDM system and a recording medium for storing a program are provided to improve the adaptive modulation/code performance by feeding back only the channel information of a corresponding sub-carrier. CONSTITUTION: Information of sub-carrier groups is received from a base station(S1). The best sub-carrier group is selected from the sub-carrier groups by considering the channel environment(S2). A minimum modulation/coding scheme is obtained from modulation/coding schemes(S3). A channel variation level and a transmission bit within each sub-carrier group are obtained according to each modulation/code scheme by increasing gradually the modulation/coding scheme level(S4-S8). A representative value is determined by using the modulation/code scheme and the channel variation level(S9,S10). The information related to the modulation/code scheme and the channel change level for the corresponding sub-carrier is fed back to the base station(S11).
Abstract translation: 目的：提供一种用于确定OFDM系统中的信道信息的装置和方法以及用于存储程序的记录介质，以通过仅反馈相应子载波的信道信息来提高自适应调制/码性能。 构成：从基站接收子载波组的信息（S1）。 通过考虑信道环境，从子载波组中选择最佳子载波组（S2）。 从调制/编码方案获得最小调制/编码方案（S3）。 通过逐渐增加调制/编码方案级别（S4-S8），根据每个调制/编码方案获得每个子载波组内的信道变化级别和传输比特。 通过使用调制/码方案和信道变化级别来确定代表值（S9，S10）。 将与调制/编码方式有关的信息和对应的副载波的信道变化级别反馈给基站（S11）。
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公开(公告)号：KR1020040031479A
公开(公告)日：2004-04-13
申请号：KR1020020060937
申请日：2002-10-07
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2697 , H04B2201/70727 , H04L5/023 , H04L27/2628 , H04L27/2646
Abstract: PURPOSE: A transmission system of an OFDM-CDMA system for transmitting a signal to a base station and a transmitting method thereof are provided to increase the efficiency of data transmission by transmitting a modulated signal using a favorable subcarrier. CONSTITUTION: A transmission system of an OFDM-CDMA system for transmitting a signal to a base station includes an adaptive modulation unit(302), a serial/parallel conversion unit(303), a subcarrier correction unit(304), a diffusion conversion unit(305), an IFFT(Inverse Fast Fourier Transform) unit(306), a digital/analog converter(307), and a frequency converter(308). The adaptive modulation unit(302) receives user data and performs an adaptive modulation process for the user data. The serial/parallel conversion unit(303) converts the adaptively modulated user data into parallel user data. The subcarrier correction unit(304) collects the parallel user in the same subcarrier units. The diffusion conversion unit(305) diffuses and converts the user data to identify each user. The IFFT unit(306) performs an IFFT operation for the user data. The digital/analog converter(307) is used for converting the corresponding subcarriers of the user data to analog data. The frequency converter(308) is used for converting the analog data to RF data.
Abstract translation: 目的：提供用于向基站发送信号的OFDM-CDMA系统的发送系统及其发送方法，以通过使用有利子载波发送调制信号来提高数据发送的效率。 构成：用于向基站发送信号的OFDM-CDMA系统的发送系统包括自适应调制单元（302），串行/并行转换单元（303），子载波校正单元（304），扩散转换单元 （305），IFFT（逆快速傅里叶变换）单元（306），数/模转换器（307）和频率转换器（308）。 自适应调制单元（302）接收用户数据并对用户数据执行自适应调制处理。 串行/并行转换单元（303）将自适应调制的用户数据转换为并行用户数据。 子载波校正单元（304）以相同的子载波单元收集并行用户。 扩散转换单元（305）扩散并转换用户数据以识别每个用户。 IFFT单元（306）对用户数据执行IFFT操作。 数字/模拟转换器（307）用于将用户数据的相应子载波转换为模拟数据。 变频器（308）用于将模拟数据转换成RF数据。
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公开(公告)号：KR100426623B1
公开(公告)日：2004-04-13
申请号：KR1020010083171
申请日：2001-12-22
Applicant: 한국전자통신연구원
IPC: H04B1/76
CPC classification number: H04B1/7097 , H04B1/71075 , H04B7/022 , H04B2201/70701 , H04B2201/70702
Abstract: An apparatus and method for canceling pilot signals from neighbor base stations is disclosed. The present invention cancels unnecessary pilot signals transmitted from the neighbor base stations by detecting, analyzing a PN signal in a pilot signal of each base station, generating estimated interference signal according to analyzed information from the detected PN signal and subtracting estimated interference signal from the received signal. Therefore, the present invention increases a bandwidth of downlink transmission channel and improves the demodulator to be operatable in low signal-to-noise ratio (Eb/No).
Abstract translation: 公开了一种用于消除来自相邻基站的导频信号的设备和方法。 本发明通过检测，分析每个基站的导频信号中的PN信号来消除从相邻基站发送的不必要的导频信号，根据来自检测到的PN信号的分析信息生成估计的干扰信号，并从所接收的信号中减去估计的干扰信号 信号。 因此，本发明增加了下行链路传输信道的带宽，并且改善了解调器在低信噪比（Eb / No）下的可操作性。
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公开(公告)号：KR100426621B1
公开(公告)日：2004-04-13
申请号：KR1020010081908
申请日：2001-12-20
Applicant: 한국전자통신연구원
IPC: H04B1/7073
CPC classification number: H04B1/70754
Abstract: An apparatus and method of searching a preamble signal in a search window for reducing a chip size of a preamble searcher in a transceiver of a base station is enclosed. By using a plurality of small window preamble searchers searching the preamble signal in a small search window, which is a division of a large search windows of a conventional preamble searcher divided by search start times, the preamble searcher of the entire search window can be implemented and the size of semiconductor chip is reduced by implementing distributing small preamble searcher in a small semiconductor chips.
Abstract translation: 包括在搜索窗口中搜索前导码信号以减少基站的收发器中的前导码搜索器的码片大小的设备和方法。 通过使用多个小窗口前导码搜索器在小搜索窗口中搜索前导码信号，该小搜索窗口是传统前导码搜索器的大搜索窗口的划分，除以搜索开始时间，可以实现整个搜索窗口的前导码搜索器 并且通过在小型半导体芯片中实施分发小型前导码搜索器来减小半导体芯片的尺寸。
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