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公开(公告)号：KR1020100049909A
公开(公告)日：2010-05-13
申请号：KR1020080108948
申请日：2008-11-04
CPC classification number: H04L25/03821 , H04B7/0413 , H04L27/2666
Abstract: PURPOSE: A subcarrier interference eliminating method at a multi-carrier base multiple antenna system steadily transmits data of a multi-carrier base multiple antenna system by eliminating the subcarrier interference. CONSTITUTION: A subcarrier partitions based on the pilot signal to the group. All pilot signals except for the initial pilot signal and last pilot signal are owned in common by do-group(601). The subcarrier interference is removed in the divided group as described above from the subcarrier of the end between pilot signal and beginning pilot signal. By successively detecting from two pilot signals from the near subcarrier the subcarrier interference is removed(602).
Abstract translation: 目的：通过消除副载波干扰，多载波基站多天线系统的副载波干扰消除方法稳定地发送多载波基站多天线系统的数据。 构成：基于该组的导频信号的子载波分区。 除了初始导频信号和最后导频信号之外的所有导频信号都由do-group（601）共同拥有。 如上所述，在导频信号和开始导频信号之间的结束的子载波上，在分割组中去除副载波干扰。 通过从近副载波的两个导频信号连续地检测出副载波干扰被去除（602）。
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公开(公告)号：KR1020090055275A
公开(公告)日：2009-06-02
申请号：KR1020070122114
申请日：2007-11-28
CPC classification number: H04L27/2626 , H04B7/06 , H04L1/0042 , H04L1/0606 , H04L27/2628
Abstract: A multiple carrier based multiple antenna system and an OFDM transmitting method using the same are provided to improve transmission efficiency by applying a SFBC(Space Frequency Block Code) method and a PCC preprocess method using an LCF(Linear Complex Field) code in a multiple antenna environment. A multiple carrier based transmission antenna system converts a signal transmitted by using a plurality of antennas in series or parallel, and encodes the converted signal by a precoding encoder(130). A serial/parallel converter(120) converts the modulated data symbol from series to parallel and transmits the converted data symbol to the precoding encoder. The precoding encoder transmits a coded signal in each antenna and the signal with an opposite phase to the coded signal by using different subcarriers and sets the sub carrier of the coded signal in at least one antenna identical to the subcarrier of the coded signal with the opposite phase of other antennas. The precoding decoder processes the received signal by applying an ML(Maximum Likelihood) method.
Abstract translation: 提供了基于多载波的多天线系统和使用该多载波的多载波OFDM系统的OFDM发送方法，以通过在多天线中应用SFBC（空间频率块码）方法和使用LCF（线性复合场）码的PCC预处理方法来提高传输效率 环境。 基于多载波的发送天线系统通过使用多个天线串联或并行地转换发送的信号，并通过预编码编码器（130）对转换后的信号进行编码。 串行/并行转换器（120）将调制的数据符号从串行转换为并行，并将转换的数据符号发送到预编码编码器。 预编码编码器通过使用不同的子载波将每个天线中的编码信号和与编码信号相反的信号发送，并将编码信号的副载波设置在与编码信号的副载波相同的至少一个天线中，具有相反的编码信号 其他天线的相位。 预编码解码器通过应用ML（最大似然）方法处理接收信号。
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公开(公告)号：KR100913441B1
公开(公告)日：2009-09-03
申请号：KR1020070083373
申请日：2007-08-20
Applicant: 한국과학기술원
Abstract: 본 발명은 자원의 시맨틱 공간 매핑을 이용한 시맨틱 자원 검색 방법에 관한 것이다.
본 발명은 대규모 유비쿼터스 컴퓨팅 환경의 자원 검색에 관한 것으로서, 자원을 확장성 있는 의미 기반으로 검색하기 위해서 시맨틱 벡터 공간을 이용하여 자원 등록 및 검색을 한다.
또한, 본 발명은 자원을 의미 기반으로 등록 및 검색하기 위하여 자원을 애튜리뷰트(Attribute)와 밸류(Value) 관계에 따라 시맨틱 좌표를 부여받고, 이를 이용하여 자원을 시맨틱 벡터 공간 상의 한 점에 매핑하는 방법을 제공한다.
또한, 본 발명은 시맨틱 벡터 공간을 자원 검색에 이용하기 위하여 시맨틱 벡터 공간상의 존 기반으로 검색 서버를 구성하고 자원을 등록 및 검색하기 위한 라우팅 하는 방법을 제공한다.
본 발명은 대규모의 유비쿼터스 환경에서 많은 자원이 있는 경우 원하는 자원을 의미 기반으로 확장성 있는 검색을 수행함으로써 서버들 간의 부하를 분배할 수 있는 효과를 기대할 수 있다.-
公开(公告)号：KR1020070091091A
公开(公告)日：2007-09-07
申请号：KR1020070083373
申请日：2007-08-20
Applicant: 한국과학기술원
CPC classification number: G06F17/3069 , G06F17/15
Abstract: A method for searching semantic resources with semantic space mapping of resource is provided to distribute load among servers by searching the desired resources based on semantic with expandability if many resources are present under large scale ubiquitous computing environment. A first resource description of a landmark representing the reference resources and the second resource description of the desired resources are expressed in ontology with attribute-value relation. Property similarity of attribute/value is calculated by finding the shortest length and a common node height for attribute/value of the first and second resource description, and substituting the shortest length and the common node height for a parameter of a property similarity function. Semantic coordinates of the desired resources are found in a semantic coordinate space by substituting the property similarity of the attribute/value for the parameter of a semantic distance function(S100).
Abstract translation: 提供一种利用资源语义空间映射搜索语义资源的方法，通过在大规模无处不在的计算环境下存在许多资源的情况下，通过搜索具有扩展性的语义来搜索所需资源，从而在服务器之间分配负载。 表示参考资源的标记的第一资源描述和期望资源的第二资源描述在具有属性值关系的本体中表示。 通过找到第一和第二资源描述的属性/值的最短长度和公共节点高度，并将最短长度和公共节点高度替换为属性相似度函数的参数来计算属性/值的属性相似性。 通过将属性/值的属性相似性代入语义距离函数的参数，在语义坐标空间中找到所需资源的语义坐标（S100）。
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