-
公开(公告)号：KR1020090052119A
公开(公告)日：2009-05-25
申请号：KR1020070118668
申请日：2007-11-20
Applicant: 한국과학기술원
CPC classification number: H04L27/2695 , H04L25/0224 , H04L25/0256 , H04L27/2675
Abstract: 본 발명은 직교주파수분할다중화(Orthogonal Frequency Division Multiplexing OFDM) 시스템에서의 채널추정방법에 관한 것이다.
본 발명에 따른 직교주파수분할다중화(Orthogonal Frequency Division Multiplexing OFDM) 시스템에서의 채널추정방법은 수신되는 파일롯 신호에 기초하여, 채널의 상태 정보를 추정하는 단계, 추정된 채널의 상태 정보에 기초하여, 수신된 반송 주파수 신호에서의 데이터 신호에 대한 심볼오류확률(Symbol Error Probability; SER)을 추정하는 단계, 데이터 신호 중 추정된 심볼오류확률에 대하여 배반인 심볼복호확률을 갖는 기준 데이터신호를 추정하는 단계 및 파일롯 신호 및 기준 데이터 신호에 기초하여, 채널을 추정하는 단계를 포함한다.
본 발명의 직교주파수분할다중화 시스템에서의 채널추정방법에 따르면, 최소평균자승오차 추정법을 이용하는 직교주파수분할다중화 시스템의 채널추정 성능을 향상 시킬 수 있다.
직교주파수분할다중화(Orthogonal Frequency Division Multiplexing OFDM), 채널추정, 추정오류, 심볼오류확률(Symbol Error Probability; SER), 신호대잡음비(Signal to Noise Ratio; SNR)-
12.发明公开
公开(公告)号：KR1020110072583A
公开(公告)日：2011-06-29
申请号：KR1020090129569
申请日：2009-12-23
CPC classification number: H04W36/0083 , H04L5/0048 , H04W16/02 , H04W16/32 , H04W36/30 , H04W84/045
Abstract: PURPOSE: A reference signal allocation method at the multicell environment, a management method, a network device applied with method thereof, and a terminal are provided to efficiently assign the reference signal pattern to a plurality of femto cells through the long-term coordination of the central control unit. CONSTITUTION: A central control unit receives the femto cell information from a network device located one or more femto cells which are adjacent to one or more neighbor cell respectively(504). The central control unit receives the reference signal reuse pattern information request signal from the network device of the femto cell(506). The central control unit transmits the reference signal reuse pattern information allocated according to the selected standards to the network device(508). The reference signal reuse pattern information is allocated with the selected standards for the adjacent cell and the femto cell located in the multicell environment to the time-sharing method.
Abstract translation: 目的：提供多单元环境下的参考信号分配方法，管理方法，应用其方法的网络设备和终端，以通过长期协调的方式将参考信号模式有效地分配给多个毫微微小区 中央控制单元。 构成：中央控制单元从位于与一个或多个相邻小区相邻的一个或多个毫微微小区的网络设备接收毫微微小区信息（504）。 中央控制单元从毫微微小区（506）的网络设备接收参考信号重用模式信息请求信号。 中央控制单元将根据所选标准分配的参考信号重用模式信息发送到网络设备（508）。 参考信号重用模式信息被分配给位于多单元环境中的相邻小区和毫微微小区的所选择的标准以用于分时方法。
-
公开(公告)号：KR1020110064081A
公开(公告)日：2011-06-15
申请号：KR1020090120516
申请日：2009-12-07
Applicant: 한국과학기술원
CPC classification number: G06K9/4614 , H04N5/3572
Abstract: PURPOSE: A high speed shadow removal method by using normal correlation and accumulation image is provided to reduce time for calculating normal correlation by using an accumulation image and a square image. CONSTITUTION: An inputted current image and a background image are converted into an inputted current square image and a background square image. The shadow removal begins by acquiring a multiplexing image(200). The accumulation image is obtained(210). NCC is obtained by using a mathematical formula(220). A pixel unit test is performed by using a preset reference value(230).
Abstract translation: 目的：提供通过使用正相关和累加图像的高速阴影去除方法，以通过使用累积图像和正方形图像来减少用于计算正态相关的时间。 构成：将输入的当前图像和背景图像转换为输入的当前正方形图像和背景方形图像。 通过获取多路复用图像（200）开始阴影去除。 获得累积图像（210）。 通过使用数学公式（220）获得NCC。 通过使用预设的参考值（230）来执行像素单元测试。
-
公开(公告)号：KR1020100060170A
公开(公告)日：2010-06-07
申请号：KR1020080118656
申请日：2008-11-27
Applicant: 한국과학기술원
IPC: G06K17/00
CPC classification number: H03M13/235 , G06K19/0723 , H03D3/008 , H04B1/7172 , H04L1/0059
Abstract: PURPOSE: A tag, a RFID system including the tag and an image data coding method are provided to improve data transmission performance of the tag by encoding image data through source coding or channel coding. CONSTITUTION: A source encoder(11) executes source encoding about image data transmitted from an external input device. A modulator(13) modulates the source encoded data. A channel encoder(12) executes channel encoding about the source encoded data using a convolutional code. The source encoder generates the source encoded data from the image data using run length coding.
Abstract translation: 目的：提供标签，包括标签的RFID系统和图像数据编码方法，以通过通过源编码或信道编码对图像数据进行编码来提高标签的数据传输性能。 构成：源编码器（11）执行关于从外部输入设备发送的图像数据的源编码。 调制器（13）调制源编码数据。 信道编码器（12）使用卷积码执行关于源编码数据的信道编码。 源编码器使用游程长度编码从图像数据生成源编码数据。
-
公开(公告)号：KR1020100060169A
公开(公告)日：2010-06-07
申请号：KR1020080118655
申请日：2008-11-27
Applicant: 한국과학기술원
CPC classification number: H04B5/0062 , G06K7/0008 , G06K19/0723
Abstract: PURPOSE: A reader, an presuming system about the number of tags and a method including the reader are provided to maximize transmitting efficiency between the reader and tag by presuming the number of tags accurately. CONSTITUTION: An impact determination unit(21) determines a tag collision of slots. The impact determination unit transmits data about the slot which acquires a tag ID successfully among the slots to a tag estimator(23). A frequency domain analysis unit(22) analyzes frequency domain of a plurality of answer signals received in the slot which the collision is generated. The tag estimating unit presumes the number of tags received in the slot which the collision is generated based on the analyzing result. A plurality of response signals has a wave and tag ID having different frequencies.
Abstract translation: 目的：提供阅读器，关于标签数量的假设系统和包括读取器的方法，以通过准确地假设标签数目来最大化读取器和标签之间的传输效率。 构成：碰撞确定单元（21）确定槽的标签碰撞。 冲击确定单元将在时隙之间获取标签ID的时隙的数据发送到标签估计器（23）。 频域分析单元（22）分析在产生冲突的时隙中接收到的多个应答信号的频域。 标签估计单元基于分析结果假设在产生冲突的时隙中接收到的标签的数量。 多个响应信号具有不同频率的波形和标签ID。
-
Patent Agency Ranking
公开(公告)号：KR1020100060168A
公开(公告)日：2010-06-07
申请号：KR1020080118654
申请日：2008-11-27
Applicant: 한국과학기술원
CPC classification number: H04B7/0608 , G06K7/0008 , G06K7/10356 , G06K17/00 , G06K19/0723 , H04B7/0413 , H04B7/08
Abstract: PURPOSE: A reader improving signal transmission performance, a signal transmission method between an RFID(Radio Frequency IDentification) system including the same and a reader and a tag are provided to maximize the signal-noise ratio of the received signal. CONSTITUTION: A reader(10) comprises a plurality of antennas. The reader comprises the signal processing unit and a controller. The signal processing unit processes each response signal received in a plurality of antenna. The controller controls a plurality of antennae based on data processed in the signal processing unit. A tag(20) communicates with the reader. The tag comprises a plurality of antennae.
Abstract translation: 目的：提高信号传输性能的读取器，包括其的RFID（射频识别）系统和读取器与标签之间的信号传输方法被提供以使接收信号的信噪比最大化。 构成：读取器（10）包括多个天线。 读取器包括信号处理单元和控制器。 信号处理单元处理在多个天线中接收的每个响应信号。 控制器基于在信号处理单元中处理的数据来控制多个天线。 标签（20）与阅读器通信。 标签包括多个天线。
-
公开(公告)号：KR1020100055662A
公开(公告)日：2010-05-27
申请号：KR1020080114492
申请日：2008-11-18
Applicant: 한국과학기술원
CPC classification number: G06Q50/10 , G06F3/14 , G06F17/30 , G06Q30/0601
Abstract: PURPOSE: A client terminal device, a performance enjoying service device, a performance enjoying service system and a method thereof through wire/wireless communication network are provided to enjoy performance online without directly visiting a performance place by generating performance data according to the information. CONSTITUTION: A communication module unit(106) performs a performance enjoying service device. A digital signal processor(108) displays performance enjoying service related information. The digital signal processor reproduces performance enjoying data according to each service package. A controller(104) sets up the impression service information through the received performance information. The controller controls performance enjoying service data.
Abstract translation: 目的：提供通过有线/无线通信网络的客户终端设备，表演享受服务设备，演奏享受服务系统及其方法，以通过根据该信息生成演奏数据来直接访问演出场所来享受在线表现。 构成：通信模块单元（106）执行演奏享受服务设备。 数字信号处理器（108）显示享受服务相关信息的性能。 数字信号处理器根据每个服务包重现性能享受数据。 控制器（104）通过所接收的演奏信息设置印象服务信息。 控制器控制性能享受服务数据。
-
公开(公告)号：KR101684925B1
公开(公告)日：2016-12-20
申请号：KR1020100131180
申请日：2010-12-21
CPC classification number: H04W72/085 , H04L1/0026 , H04W28/06 , H04W52/30
Abstract: 복수의단말들각각의피드백정보에대한기지국에서의타겟수신파워에대한정보및 피드백정보에대한피드백모드와관련된정보를포함하는피드백제어메시지를이용하여수신신호의복구(recovery) 성능을높이는기지국및 단말의통신방법이제공된다.
Abstract translation: 提供了一种用于使用反馈控制消息来提高信号的恢复性能的基站和终端的通信方法。 反馈控制消息可以包括关于基站处的目标接收功率的信息，关于多个终端中的每一个的反馈信息以及与反馈信息的反馈模式相关联的信息。
-
-
公开(公告)号：KR1020120059989A
公开(公告)日：2012-06-11
申请号：KR1020100121522
申请日：2010-12-01
IPC: H04B7/26
CPC classification number: H04B7/026 , H04B7/15557 , H04W52/02
Abstract: PURPOSE: A target terminal and cooperation communication method of a cooperation terminal is provided to improve the quality of reception data by using cooperation between terminals in cell environment. CONSTITUTION: A target terminal requests cooperation to one or more neighbor terminals(410). The target terminal acquires information for transmission power requested by information for a cooperation method(420). The target terminal selects a cooperation terminal from one or more neighbor terminals based on the transmission power(430). The target terminal cooperatively communicate with the cooperation terminal according to a cooperation method(440).
Abstract translation: 目的：提供协作终端的目标终端和协作通信方式，通过在小区环境中的终端之间的协作来提高接收数据的质量。 构成：目标终端请求与一个或多个相邻终端（410）的协作。 目标终端获取用于协作方法的信息所请求的发送功率的信息（420）。 目标终端基于发送功率从一个或多个相邻终端选择合作终端（430）。 目标终端根据协作方式与合作终端协作通信（440）。
-
-
-
-
-
-
-
-
-
Search Results
40
records
(took 0.025 seconds)
