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公开(公告)号：KR101492367B1
公开(公告)日：2015-02-12
申请号：KR1020140010454
申请日：2014-01-28
Applicant: 서울대학교산학협력단
Inventor： 이재홍
IPC: G01S13/93
CPC classification number: G01S7/023 , G01S13/284 , G01S13/42 , G01S13/582 , G01S13/86 , G01S13/93 , G01S13/931 , G01S2013/9375 , G01S2013/9389
Abstract: 확산 대역 레이더 신호를 송신하는 방법 및 장치가 개시된다. 본 발명에 따르면, 복수의 확산 시퀀스를 저장하고, 차량의 고도를 측정하고, 상기 측정된 차량의 고도에 기초하여 상기 복수의 확산 시퀀스 중 적어도 하나의 확산 시퀀스를 선택한다. 적어도 하나의 확산 시퀀스가 서택되면, 그 선택된 확산 시퀀스에 기초하여 확산 대역 레이더 신호를 송신하는 확산 대역 레이더 신호 송신 방법 및 장치를 제공한다.
Abstract translation: 公开了一种用于发射扩频雷达信号的方法和装置。 根据本发明，存储多个扩展序列，测量车辆的高度，并且基于车辆的测量高度来选择扩展序列的至少一个扩展序列。 当选择至少一个序列时，基于所选择的扩展序列发射扩频雷达信号。
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公开(公告)号：KR1020140117281A
公开(公告)日：2014-10-07
申请号：KR1020140031704
申请日：2014-03-18
Applicant: 서울대학교산학협력단
CPC classification number: H04B7/155 , H04L27/2653
Abstract: A relay according to an embodiment of the present invention includes an antenna which receives each signal transmitted based on each subcarrier wave from each terminal of a pair of terminals which exchanges signals with each other; a decoding part which decodes each signal received; a combination part which combines the decoded signals through re-encoding or superposition encoding; and a control part which substitutes the subcarrier waver of a relay for each subcarrier wave of each terminal of the pair of terminals, and transmits the combined signal to each terminal which provides a signal which is the basis of combination.
Abstract translation: 根据本发明的实施例的继电器包括：天线，其接收基于每个子载波的发送的信号，所述每个信号从彼此交换信号的一对终端的每个终端; 对接收到的每个信号进行解码的解码部分; 组合部分，其通过重新编码或重叠编码组合解码信号; 以及控制部，其将所述一对终端的各个终端的每个副载波的中继的副载波动作代替，并将所述组合信号发送给提供作为组合的基础的信号的各个终端。
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公开(公告)号：KR1020140114793A
公开(公告)日：2014-09-29
申请号：KR1020140031702
申请日：2014-03-18
Applicant: 서울대학교산학협력단
IPC: H04B7/14
CPC classification number: H04B7/15585 , H04B7/15528
Abstract: A repeater in a bidirectional transfer relay network according to one embodiment of the present invention includes a repeater reception antenna which simultaneously receives a signal from two terminals which want to transmit/receive a signal with each other, a repeater control part which deletes a loop interference signal based on incomplete channel information in a signal received from the repeater reception antenna, and a repeater transmission/reception antenna which transmits an amplified signal to the two terminals.
Abstract translation: 根据本发明的一个实施例的双向传送中继网络中的中继器包括：中继器接收天线，其同时从两个终端接收希望彼此发送/接收信号的信号;中继器控制部分，其删除环路干扰 基于从中继器接收天线接收的信号中的不完整信道信息的信号，以及向两个终端发送放大信号的中继器发送/接收天线。
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公开(公告)号：KR101415935B1
公开(公告)日：2014-07-04
申请号：KR1020120155534
申请日：2012-12-27
Applicant: 서울대학교산학협력단
Abstract: An umbrella for a wheelchair includes a drive unit, a rotation shaft, a cover unit and a connection unit. The drive unit is coupled to the back of the wheelchair. The rotation shaft is fixed onto the drive unit to be rotated. The cover unit is fixed onto both ends of the rotation shaft to be folded or unfolded in accordance with the operation of the rotation shaft. The connection unit successively rotates the cover unit by connecting the rotation shaft to the cover unit.
Abstract translation: 用于轮椅的伞包括驱动单元，旋转轴，盖单元和连接单元。 驱动单元联接到轮椅的后部。 旋转轴固定在驱动单元上以旋转。 盖单元根据旋转轴的操作被固定到旋转轴的两端以进行折叠或展开。 连接单元通过将旋转轴连接到盖单元来依次旋转盖单元。
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45.发明公开
公开(公告)号：KR1020130110588A
公开(公告)日：2013-10-10
申请号：KR1020120032668
申请日：2012-03-29
Applicant: 서울대학교산학협력단
CPC classification number: H04J11/005 , H04L1/18 , H04W72/0453 , H04W72/082
Abstract: PURPOSE: A subcarrier assignment technique for a multi-cell downlink orthogonal frequency division multiple access (OFDMA) relay network and an interference adjustment technique between cells are provided to increase frequency efficiency and improve transmission reliability. CONSTITUTION: Each cell uses a subcarrier and a relay. Each cell requests the subcarrier limitation to an adjacent cell for adjusting the interference between cells. A central processing device solves a subcarrier limitation request collision problem.
Abstract translation: 目的：提供一种用于多小区下行正交频分多址（OFDMA）中继网络的子载波分配技术和小区之间的干扰调整技术，以提高频率效率并提高传输可靠性。 构成：每个单元都使用副载波和继电器。 每个小区向相邻小区请求子载波限制，以调整小区之间的干扰。 中央处理装置解决副载波限制请求冲突问题。
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Patent Agency Ranking
公开(公告)号：KR1020130110587A
公开(公告)日：2013-10-10
申请号：KR1020120032667
申请日：2012-03-29
Applicant: 서울대학교산학협력단
CPC classification number: H04B7/0443 , H04J11/004 , H04L27/2608 , H04L27/2649 , H04W72/082
Abstract: PURPOSE: An efficient resource assignment technique in a multi-user multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) system based on minimum mean square error-successive interference cancellation (MMSE-SIC) is provided to improve frequency efficiency and transmission reliability. CONSTITUTION: An effective channel vector is obtained from a subcarrier of user K by using a null space of a selected user group. A data transfer rate is obtained from the subcarrier of the user K by using the effective channel vector. Transmission power of the subcarrier, which is assigned by using a water-filling method, is obtained after assigning the subcarrier.
Abstract translation: 目的：提供基于最小均方误差连续干扰消除（MMSE-SIC）的多用户多输入多输出正交频分复用（MIMO-OFDM）系统中的高效资源分配技术，以提高频率效率 和传输可靠性。 构成：通过使用所选择的用户组的空白空间，从用户K的子载波获得有效的信道向量。 通过使用有效信道向量从用户K的子载波获得数据传送速率。 在分配子载波之后，获得通过使用充水方法分配的副载波的发送功率。
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公开(公告)号：KR101212843B1
公开(公告)日：2012-12-14
申请号：KR1020110004419
申请日：2011-01-17
Applicant: 서울대학교산학협력단
Abstract: 기회적단말선택기법을이용한다중단말협력방법은, 복수개의단말기가복수개의시간슬롯동안시분할접속방식으로데이터를전송하는다중단말협력방법일수 있다. 상기다중단말협력방법은, 상기각 시간슬롯을복수개의부 시간슬롯으로분할하는단계; 상기각 부시간슬롯에서, 상기복수개의단말기중 전송할데이터블록을포함하며수신기와의채널이득이가장높은최적단말기를결정하는단계; 및상기최적단말기에서상기수신기에데이터블록을전송하는단계를포함할수 있다.
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公开(公告)号：KR101018571B1
公开(公告)日：2011-03-03
申请号：KR1020080136391
申请日：2008-12-30
Applicant: 서울대학교산학협력단
CPC classification number: H04L1/0001 , H04B7/024 , H04B7/15592 , H04L2001/0097
Abstract: 개시된 기회적 중계 기법을 이용한 협력 다이버시티 방법 및 협력 다이버시티 시스템은 협력 다이버시티 무선 통신에 있어서, 인접 셀의 간섭 효과를 고려하여 최적의 중계기를 선택하고, 선택된 중계기에서 송신기로부터 수신한 데이터 신호를 수신기로 전송한다. 본 발명의 실시예에 의하면, 단일 셀 환경 뿐 아니라, 다중 셀 환경의 시스템에서도 채널의 간섭을 고려한 최적의 중계기를 선택하고, 선택된 중계기를 통하여 신호를 수신기에 송신함으로써 송신 효율을 높이고, 신뢰성을 향상시킬 수 있다.
기회적 중계 기법, 협력 다이버시티, 무선 통신-
公开(公告)号：KR1020100107096A
公开(公告)日：2010-10-05
申请号：KR1020090025195
申请日：2009-03-25
Applicant: 서울대학교산학협력단
CPC classification number: H04L1/0606 , H04L1/0668 , H04L25/03006 , H04L27/2628
Abstract: PURPOSE: An alamouti SFBC-OFDM system and a communicating method using a partial response coding are provided to encode a data stream to be transmitted by using a frequency-domain partial response coding. CONSTITUTION: A transmitter transmits data. A receiver receives the data. The transmitter includes a partial response coding unit for partial response encoding. A modulation unit(11) modulates an input data stream. A serial to parallel converter(12) converts a serial data stream to a parallel data stream. An alamouti SFBC-OFDM encoder(14) performs an alamouti encoding. A plurality of inverse fast Fourier transform units(15) performs an inverse fast Fourier transform for converting the data stream into the data of a time domain in a transmission process. A partial response coding unit is connected between the serial to parallel converter and the alamouti encoder.
Abstract translation: 目的：提供一种alamouti SFBC-OFDM系统和使用部分响应编码的通信方法，以通过使用频域部分响应编码对要发送的数据流进行编码。 构成：发射机发射数据。 接收器接收数据。 发射机包括用于部分响应编码的部分响应编码单元。 调制单元（11）调制输入数据流。 串行到并行转换器（12）将串行数据流转换为并行数据流。 alamouti SFBC-OFDM编码器（14）执行alamouti编码。 多个逆快速傅立叶变换单元（15）在传输过程中执行用于将数据流转换成时域的数据的快速傅立叶逆变换。 部分响应编码单元连接在串并转换器和alamouti编码器之间。
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公开(公告)号：KR1020100027926A
公开(公告)日：2010-03-11
申请号：KR1020080103381
申请日：2008-10-22
Applicant: 엘지전자 주식회사 , 서울대학교산학협력단
CPC classification number: H04B7/026
Abstract: PURPOSE: A method of allocating resources for cooperative diversity is provided to guarantee QoS(Quality of Service) of a fixed level for each user while improving a data transmission rate of the entire system. CONSTITUTION: Channel conditions about each source station are obtained(S610). One or more subcarriers are exclusively allocated to each source station based on the channel conditions. A relay station about each source station is selected(S620). Cooperative diversity is performed using the same subcarrier as a source station to which the relay station corresponds. The subcarrier is assigned to satisfy a minimum data rate necessary for each source station for service quality satisfaction of a user.
Abstract translation: 目的：提供一种分配资源以进行协同分集的方法，以保证每个用户固定级别的QoS（服务质量），同时提高整个系统的数据传输速率。 构成：获得关于每个源站的信道条件（S610）。 基于信道条件将一个或多个子载波专门分配给每个源站。 选择关于每个源站的中继站（S620）。 使用与中继站对应的源站相同的子载波来执行协同分集。 分配子载波以满足每个源站对用户的服务质量满意度所需的最小数据速率。
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