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公开(公告)号：KR101842436B1
公开(公告)日：2018-03-28
申请号：KR1020160114991
申请日：2016-09-07
Applicant: 현대자동차주식회사 , 기아자동차주식회사 , 서울대학교산학협력단
CPC classification number: B60R25/24 , B60R25/209
Abstract: 차량은원격조작장치를탐색하기위한 LF(Low Frequency)신호를송신하는 LF송신부, LF송신부가송신하는 LF신호의주파수대역보다높은미리설정된주파수대역의신호를수신하는고주파수신부, 및고주파수신부에서수신된신호가변조된 LF신호인경우중계공격으로서판단하는제어부를포함한다.
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公开(公告)号：KR101216735B1
公开(公告)日：2012-12-28
申请号：KR1020100086494
申请日：2010-09-03
Applicant: 서울대학교산학협력단
IPC: H03M13/11
CPC classification number: H03M13/2909 , H03M13/1102 , H03M13/19 , H03M13/2927
Abstract: 복호장치가프로덕트부호의부호어행렬을복호하는방법이제공된다. 프로덕트부호의부호어행렬을복호하는방법은수직부호에대한제1 확장패리티체크행렬을생성하는단계, 상기부호어행렬내의복수의행의수평부호어를각각제1 복호하는단계, 상기제1 복호에성공한수평부호어의행에해당하는열을상기제1 확장패리티체크행렬로부터제거하여제2 확장패리티체크행렬을생성하는단계, 그리고상기제2 확장패리티체크행렬을이용하여상기제1 복호에실패한수평부호어를제2 복호하는단계를포함한다. 이에따라, 간단하고신뢰도높은프로덕트부호의복호방법이제공될수 있다.
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23.发明公开
公开(公告)号：KR1020120121733A
公开(公告)日：2012-11-06
申请号：KR1020110039702
申请日：2011-04-27
Applicant: 서울대학교산학협력단
IPC: H04L27/26
CPC classification number: H04L27/2614 , H04L27/2628
Abstract: PURPOSE: A method and apparatus for reducing a peak to average power ratio in an orthogonal frequency division multiplexing system using additional mapping sequences are provided to generate an alternative signal sequence by performs IFFT(inverse fast Fourier transform) of sub blocks and an additional mapping symbol sub block and then linearly coupling the sub blocks and the additional mapping symbol sub block in a time domain. CONSTITUTION: A sub block partition part(410) partitions an OFDM symbol sequence into two or more sub blocks. An additional mapping symbol sub block generating part(420) generates additional mapping symbol sub blocks which corresponds to each sub block. An IFFTpart(430) performs IFFT of sub blocks and the additional mapping symbol sub blocks. An alternative signal sequence generation part(440) generates alternative signal sequences using signal subsequences and additional mapping signal subsequences. A minimum PAPR(peak to average power ratio) selecting part(450) selects the alternative signal sequence corresponding to minimum PAPR.
Abstract translation: 目的：提供一种在使用附加映射序列的正交频分复用系统中降低峰值与平均功率比的方法和装置，以通过执行子块的IFFT（快速傅里叶逆变换）和附加映射符号来产生替代信号序列 然后在时域中对子块和附加映射符号子块进行线性耦合。 构成：子块分割部分（410）将OFDM符号序列划分成两个或更多个子块。 附加的映射符号子块生成部分（420）生成对应于每个子块的附加映射符号子块。 IFFT部分（430）执行子块和附加映射符号子块的IFFT。 替代信号序列生成部分（440）使用信号子序列和附加映射信号子序列来生成备选信号序列。 最小PAPR（峰值与平均功率比）选择部分（450）选择对应于最小PAPR的替代信号序列。
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公开(公告)号：KR1020120023403A
公开(公告)日：2012-03-13
申请号：KR1020100086494
申请日：2010-09-03
Applicant: 서울대학교산학협력단
IPC: H03M13/11
CPC classification number: H03M13/2909 , H03M13/1102 , H03M13/19 , H03M13/2927
Abstract: PURPOSE: A decoding method of a product code and an apparatus thereof are provided to make decoding result of very low error rate by reducing the complexity of calculation during a process of decoding the codeword matrix of the product code. CONSTITUTION: A decoding device selects soft-decision information of a horizontal code word as one soft-decision information about a decoding-failed horizontal code word. The soft-decision information is already calculated from the channel receiving information. The decoding device extracts another soft-decision information about horizontal code words using hard decision information of horizontal code words which are successfully decoded and the soft-decision information of other horizontal code words which are decoding-failed. The decoding device re-decodes the horizontal code words by adding two soft-decision information on the horizontal code words. The decoding device eliminates the matrix corresponding to the decoding success from a second expansion parity check matrix.
Abstract translation: 目的：提供一种产品代码的解码方法及其装置，通过在对产品代码的码字矩阵进行解码的过程中降低计算的复杂度来使得错误率非常低的解码结果。 构成：解码装置选择水平码字的软判决信息作为解码失败的水平码字的一个软决策信息。 已经从信道接收信息计算出软判决信息。 解码装置使用成功解码的水平码字的硬判决信息和解码失败的其他水平码字的软判决信息，提取关于水平码字的另一软判决信息。 解码装置通过在水平码字上添加两个软判决信息来重新解码水平码字。 解码装置从第二扩展奇偶校验矩阵中消除与解码成功相对应的矩阵。
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公开(公告)号：KR101060548B1
公开(公告)日：2011-08-31
申请号：KR1020100047552
申请日：2010-05-20
Applicant: 서울대학교산학협력단
IPC: H04L27/26
CPC classification number: H04L27/2614 , H04L27/2628
Abstract: PURPOSE: An apparatus for reducing a Peak-to-Average Power Ratio in an Orthogonal Frequency Division Multiplexing system and a method thereof are provided to create a plurality of candidate signals which has the different PAPR by applying circular shift to signals of an intermediate phase in an Inverse Fast Fourier Transform shift. CONSTITUTION: An input symbol sequence is inputted. The inputted input symbol sequence is processed to a (n-i) stage of an IFFT part(340). An intermediate OFDM signal sequence is created. The intermediate OFDM signal sequence is transmitted to IFFT blocks(341,342) of the different U. The intermediate OFDM signal sequence is rotationally transported by different movement values which is pre-set at each the IFFT block. The intermediate OFDM signal sequence is processed the IFFT to a rest n stage. A plurality of OFDM signal sequences with different PAPRs is created.
Abstract translation: 目的：提供一种用于降低正交频分复用系统中的峰均功率比的装置及其方法，用于通过向中间相的信号施加循环移位来创建具有不同PAPR的多个候选信号 快速傅里叶逆变换。 构成：输入符号序列。 输入的输入符号序列被处理为IFFT部分（340）的（n-i）级。 创建中间OFDM信号序列。 中间OFDM信号序列被发送到不同U的IFFT块（341,342）。中间OFDM信号序列由在每个IFFT块预置的不同移动值被旋转地传输。 中间OFDM信号序列被处理为休眠n阶段的IFFT。 创建具有不同PAPR的多个OFDM信号序列。
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Patent Agency Ranking
公开(公告)号：KR101980655B1
公开(公告)日：2019-05-22
申请号：KR1020180112229
申请日：2018-09-19
Applicant: 한화시스템 주식회사 , 서울대학교산학협력단
IPC: H04W16/08 , H04W16/24 , H04B17/336
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公开(公告)号：KR1020080072406A
公开(公告)日：2008-08-06
申请号：KR1020070011127
申请日：2007-02-02
Applicant: 엘지전자 주식회사 , 서울대학교산학협력단
CPC classification number: H03M13/1105 , H03M13/1148 , H04L1/0057
Abstract: A method of performing LDPC(Low-Density Parity-Check codes) decoding using a model matrix is provided to perform a decoding process by using the model matrix having high performance. A method of performing LDPC decoding using a model matrix comprises the following steps of: receiving an LDPC coded signal from a channel; iteratively performing a check node update and a variable node update based on the model matrix in which at least two shift numbers are superposed; determining a decoding value based on result values of the check node update and the variable node update; and performing a check for the determined decoding value. The step of performing the check node update includes the step of performing data processing to reflect an operation result processed through at least one among a plurality of edges formed with a superposition structure to a corresponding variable node memory(2001,2002,2003).
Abstract translation: 提供使用模型矩阵执行LDPC（低密度奇偶校验码）解码的方法，以通过使用具有高性能的模型矩阵来执行解码处理。 使用模型矩阵执行LDPC解码的方法包括以下步骤：从信道接收LDPC编码信号; 基于叠加了至少两个移位号的模型矩阵迭代地执行校验节点更新和变量节点更新; 基于所述校验节点更新和所述变量节点更新的结果值来确定解码值; 并对所确定的解码值进行检查。 执行校验节点更新的步骤包括执行数据处理以将通过叠加形成的多个边缘中的至少一个处理的操作结果反映到对应的可变节点存储器的步骤（2001,2002,2003）。
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公开(公告)号：KR101925107B1
公开(公告)日：2018-12-04
申请号：KR1020180112228
申请日：2018-09-19
Applicant: 한화시스템 주식회사 , 서울대학교산학협력단
Abstract: 본 발명은 서비스 실패가 가장 많이 일어난 제 1 셀을 찾는 과정; 상기 제 1 셀이 인접 제 2 셀들에 서비스를 요청하는 과정; 제 2 셀들 중 서비스 실패가 일어나지 않은 셀의 단말기들의 송출 전력을 조절하는 과정; 단말기측에서 RSRP을 재측정하고 핸드오버를 수행하는 과정; 제 1 셀에 할당된 단말기의 개수를 서비스 가능한 단말기의 개수와 비교하여 제 1 셀의 송출 전력을 조절하는 과정; 제 1 셀에 인접한 제 2 셀들에 요청하여 송출 전력을 조절하는 과정; 및 단말기측에서 RSRP을 재측정하고 핸드오버를 수행하는 과정을 포함하는 무선 통신 시스템에서 간섭 조정 방법을 제시한다.
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公开(公告)号：KR1020170115301A
公开(公告)日：2017-10-17
申请号：KR1020160042767
申请日：2016-04-07
Applicant: 삼성전자주식회사 , 서울대학교산학협력단
CPC classification number: H04B7/0617 , H04B7/024 , H04B7/026 , H04B7/0408 , H04B7/0452 , H04W72/046 , H04W72/1226
Abstract: 본개시는 LTE(Long Term Evolution)와같은 4G(4generation) 통신시스템이후보다높은데이터전송률을지원하기위한 5G(5generation) 또는 pre-5G 통신시스템에관련된것이다. 본개시에따른무선통신시스템에서수신단의동작방법은제1 시간구간동안수신단의셀(cell)에속하는적어도하나의송신단과수신단간의채널인제1 채널을통해수신된신호및 이웃셀에속하는적어도하나의송신단과수신단간의채널인제2 채널을통해수신된신호를포함하는제1 신호를수신하는과정과, 제2 시간구간동안중계국으로부터이웃셀에속하는적어도하나의송신단으로부터빔포밍(beamforming)이적용된제2 신호를중계국과수신단간의채널을통해수신하는과정과, 상기제1 신호와상기제2 신호를더함으로써획득되는제3 신호를디코딩(decoding)하는과정을포함한다.
Abstract translation: 本公开涉及用于在诸如长期演进（LTE）之类的4G（4G）通信系统之后支持更高数据速率的5G（5代）或5G前通信系统。 根据本发明在无线通信系统中操作接收器的方法具有至少一个属于至少一个信号和相邻小区中的发射机和属于接收机的小区（小区），用于第一时间间隔的接收器之间在西班牙第一通道上的一个信道接收到的 一个用于传送在发射器和方法，包括以下步骤：接收包括一个信号的第一信号的期间接收到在接收器中，并从属于从中继站的相邻小区的发送器的至少一个第二时间波束（波束形成）之间西班牙第二信道的信道的 2信号通过中继站和接收机之间的信道，并且解码通过添加第一信号和第二信号获得的第三信号。
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30.发明授权
公开(公告)号：KR101215932B1
公开(公告)日：2012-12-28
申请号：KR1020110039702
申请日：2011-04-27
Applicant: 서울대학교산학협력단
IPC: H04L27/26
Abstract: 직교주파수분할다중화시스템의 PAPR 감소방법및 이를위한직교주파수분할다중화시스템통신장치가개시된다. 본발명의일실시예에따른직교주파수분할다중화시스템의 PAPR 감소방법은, OFDM 심볼시퀀스를둘 이상의서브블록들로파티션하는단계; 상기서브블록들각각에대응하는부가적맵핑심볼서브블록을생성하는단계; 상기서브블록들및 상기부가적맵핑심볼서브블록을역 고속푸리에변환하여신호서브시퀀스및 부가적맵핑신호서브시퀀스를생성하는단계; 상기신호서브시퀀스및 부가적맵핑신호서브시퀀스를이용하여후보신호시퀀스들을생성하는단계; 및상기후보신호시퀀스들중 최소 PAPR에상응하는후보신호시퀀스를선택하는단계를포함한다.
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