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公开(公告)号：KR100684032B1
公开(公告)日：2007-02-28
申请号：KR1020050114672
申请日：2005-11-29
Applicant: 한국과학기술원
Abstract: A truncated adaptive transmission method suitable for a CDMA(Code Division Multiple Access)/FDM(Frequency Division Multiplexing) method in a forward link is provided to realize better performance than an FH(Frequency Hopping)-DS(Direct Sequence) even when either an orthogonal signature sequence or a probability signature sequence is used by increasing desired signal strength while restraining interference of a different cell base station in case of several cells. A complex low band pass response of the mth sub-channel between the jth cell base station and a reference user, the first user of the 0th cell is expressed by a certain equation. In a forward link under the environment of several cells, a sub-channel gain is obtained by multiplying a path loss and frequency Rayleigh attenuation together. The attenuation gains of each sub-channel are independent but the path loss of each sub-channel is the same.
Abstract translation: 提供适用于正向链路中的CDMA（码分多址）/ FDM（频分复用）方法的截短自适应传输方法，以实现比FH（跳频）-DS（直接序列）更好的性能，即使当 正交签名序列或概率签名序列通过增加期望的信号强度来使用，同时在几个小区的情况下抑制不同小区基站的干扰。 第j个小区基站和参考用户之间的第m个子信道的复数低带通响应，第0个小区的第一个用户由特定方程表示。 在几个小区环境下的前向链路中，通过将路径损耗和频率瑞利衰减相乘得到子信道增益。 每个子信道的衰减增益是独立的，但每个子信道的路径损耗是相同的。
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公开(公告)号：KR1020060131425A
公开(公告)日：2006-12-20
申请号：KR1020050051861
申请日：2005-06-16
Applicant: 한국과학기술원
IPC: H04L27/32
Abstract: A weak signal detection device used in a moving average model of impulsive noise is provided to have the almost same performance as that of an ML weak signal detection device while a structure of a suboptimum ML weak signal detection device is simpler than that of the ML weak signal detection device. A weak signal detection device has a determined region of a certain equation in a moving average model of impulse noise. The weak signal detection device is a suboptimum ML(Maximum Likelihood) weak signal detection device.
Abstract translation: 提供了一种在移动平均脉冲噪声模型中使用的弱信号检测装置，具有与ML弱信号检测装置几乎相同的性能，而最小ML弱信号检测装置的结构比ML弱信号检测装置的结构简单 信号检测装置。 弱信号检测装置在脉冲噪声的移动平均模型中具有某一方程的确定区域。 弱信号检测装置是一个次优ML（最大似然）弱信号检测装置。
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公开(公告)号：KR100620889B1
公开(公告)日：2006-09-19
申请号：KR1020040059450
申请日：2004-07-28
Applicant: 한국과학기술원
IPC: H04B1/7077 , H04B1/7085
Abstract: 이 발명은 직접수열 대역확산 (direct sequence spread spectrum) 시스템에 알맞은 비동위상 순차 부호획득 기법에 관한 것이다.
본 발명에서는 어림값을 바탕으로 감쇄가 있거나 없는 채널에 쓸 수 있는 간단한 최대 비슷함 비율을 만들어 실시간으로 구현이 가능하고 그 성능이 비슷한 부호획득 방법을 제공한다.
직접수열 대역확산, 의사잡음 수열, 순차 부호획득, 어림 최대 비슷함 비율-
公开(公告)号：KR1020060023499A
公开(公告)日：2006-03-14
申请号：KR1020040072360
申请日：2004-09-09
Applicant: 한국과학기술원
IPC: H04L27/01
Abstract: 이 발명은 새로운 수렴 탐지기를 사용한 블라인드 등화 기법에 관한 것이다.
이 발명에서 제안한 기법은 두 방식 고친 일정 계수 알고리듬과 결정지향 알고리듬의 특성을 한꺼번에 살려 초기 수렴속도가 빠르고, 수렴뒤 나머지 오차가 작다. 이 기법에서는 수렴 시기를 찾아내어 두 방식 고친 일정 계수 알고리듬에서 결정지향 알고리듬으로 넘어가고자 수렴 탐지기를 쓴다. 이 기법을 쓰면, 이제까지의 알고리듬과 견주어 더 나은 성능을 보인다.
두 방식 고친 일정 계수 알고리듬, 결정지향 알고리듬, 수렴 탐지기.-
Patent Agency Ranking
公开(公告)号：KR100445779B1
公开(公告)日：2004-08-25
申请号：KR1020020008111
申请日：2002-02-15
Applicant: 한국과학기술원
IPC: H04B7/26
Abstract: PURPOSE: A space informing system using a GPS(Global Positioning System) for a mobile phone and a method therefor are provided to add a space unit informing function, which is operated by only a time unit, to an informing system of the mobile phone by geographic information on space. CONSTITUTION: A plurality of GPSSs(GPS Satellites) successively transmit navigation message signals necessary for calculating position to a mobile phone(10) through a carrier. A base station including an ES(Earth Station), a WMS(Wide area Master Station), and a WRS(Wide area Reference Station) receives signals from the GPSSs, calculates and corrects a position with respect to a reference point, and transmits calculated position information to a GS(Geosynchronous Satellite). The GS transmits correction position error information about the base station to the mobile phone(10). The mobile phone(10) calculates the signals received from the GPSSs to obtain its current position information, re-corrects its current position information with reference to correction position error information to obtain accurate its current position information, and performs a corresponding operation when the obtained position is within a radius of a specific point.
Abstract translation: 目的：提供一种使用GPS（全球定位系统）用于移动电话的空间通知系统及其方法，用于通过按时间单位将空间单元通知功能添加到移动电话的通知系统 空间地理信息。 组成：多个GPSS（GPS卫星）通过一个载体连续地发送用于计算位置到移动电话（10）所需的导航消息信号。 包括ES（地球站），WMS（广域主站）和WRS（广域参考站）的基站接收来自GPSS的信号，计算并校正相对于参考点的位置，并且发送计算的 位置信息给GS（地球同步卫星）。 GS将关于基站的校正位置错误信息发送到移动电话（10）。 移动电话（10）计算从GPSS接收到的信号以获得其当前位置信息，参考校正位置误差信息重新校正其当前位置信息以获得精确的其当前位置信息，并且当获得的信息 位置在特定点的半径内。
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公开(公告)号：KR1020030068637A
公开(公告)日：2003-08-25
申请号：KR1020020008111
申请日：2002-02-15
Applicant: 한국과학기술원
IPC: H04B7/26
CPC classification number: H04W4/021 , H04M1/72572 , H04W64/00
Abstract: PURPOSE: A space informing system using a GPS(Global Positioning System) for a mobile phone and a method therefor are provided to add a space unit informing function, which is operated by only a time unit, to an informing system of the mobile phone by geographic information on space. CONSTITUTION: A plurality of GPSSs(GPS Satellites) successively transmit navigation message signals necessary for calculating position to a mobile phone(10) through a carrier. A base station including an ES(Earth Station), a WMS(Wide area Master Station), and a WRS(Wide area Reference Station) receives signals from the GPSSs, calculates and corrects a position with respect to a reference point, and transmits calculated position information to a GS(Geosynchronous Satellite). The GS transmits correction position error information about the base station to the mobile phone(10). The mobile phone(10) calculates the signals received from the GPSSs to obtain its current position information, re-corrects its current position information with reference to correction position error information to obtain accurate its current position information, and performs a corresponding operation when the obtained position is within a radius of a specific point.
Abstract translation: 目的：提供一种使用移动电话的GPS（全球定位系统）的空间通知系统及其方法，用于将仅由时间单元操作的空间单元通知功能添加到移动电话的通知系统 空间地理信息。 构成：多个GPSS（GPS卫星）通过载体连续地发送用于计算位置的导航信息信号到移动电话（10）。 包括ES（地球站），WMS（广域主站）和WRS（广域参考站）的基站从GPSS接收信号，计算并校正相对于参考点的位置，并发送计算出的 位置信息到GS（地球同步卫星）。 GS向移动电话（10）发送关于基站的校正位置错误信息。 移动电话（10）计算从GPSS接收到的信号以获得其当前位置信息，参照校正位置误差信息重新校正其当前位置信息，以获得其当前位置信息的准确性，并且当获得 位置在特定点的半径内。
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28.发明授权
公开(公告)号：KR100361033B1
公开(公告)日：2003-01-24
申请号：KR1020010002470
申请日：2001-01-16
Applicant: 한국과학기술원
IPC: H03M13/23
CPC classification number: H04L1/005 , H03M13/2957 , H03M13/31 , H03M13/3927 , H04B1/707 , H04L1/0041 , H04L1/0055 , H04L1/0066 , H04L1/0071 , H04L1/04 , H04L1/08 , H04L27/2649
Abstract: The present invention relates to a multicarrier direct sequence code division multiple access (DS/CDMA) system using a turbo code with nonuniform repetition coding. In particular, it relates to a multicarrier DS/CDMA system using a turbo code with unequal diversity order in its code symbols instead of using a convolutional code.
Abstract translation: 本发明涉及使用具有非均匀重复编码的turbo码的多载波直接序列码分多址（DS / CDMA）系统。 具体地说，它涉及一种多载波DS / CDMA系统，它使用代码符号中不等分集顺序的turbo码，而不是使用卷积码。
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公开(公告)号：KR1020020061413A
公开(公告)日：2002-07-24
申请号：KR1020010002469
申请日：2001-01-16
Applicant: 한국과학기술원
IPC: G06F17/10
Abstract: PURPOSE: A method for obtaining a rapid signature sequence based on a code and rank statistics is provided to obtain a test statistic of new detector using an approximate method, enhance detecting performance by deciding a threshold value, and removing a time for an interference variance estimation, thereby reducing an average pseudo noise code obtaining time. CONSTITUTION: New type detector necessary for obtaining a pseudo noise code in a direct sequence band diffusion system is suggested. A method for obtaining a rapid signature sequence based on a code and rank statistics is suggested for inducing a test statistic of a local optimum rank detector and obtaining a test statistic of a local sub optimization rank detector and a deformation code rank detector using an asymptotic approximation. After obtaining a test statistic of new detector using an approximation based on a code and a rank, a threshold value is decided, and a detecting performance is increased and a time necessary for interference variance estimation is removed. Thus, an average pseudo noise code obtaining time is reduced.
Abstract translation: 目的：提供一种基于代码和秩统计获取快速签名序列的方法，以使用近似方法获得新检测器的检验统计量，通过确定阈值增强检测性能，并消除干扰方差估计的时间 从而减少平均伪噪声码获取时间。 建议：建议在直接序列带扩散系统中获得伪噪声码所需的新型检测器。 提出了一种基于代码和秩统计量获得快速签名序列的方法，用于诱导局部最优秩检测器的检验统计量，并使用渐近近似获得局部子优化等级检测器和变形代码等级检测器的检验统计量 。 在使用基于码和秩的近似获得新检测器的检验统计量之后，确定阈值，并且增加检测性能，并且消除干扰方差估计所需的时间。 因此，减少平均伪噪声码获取时间。
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公开(公告)号：KR101480221B1
公开(公告)日：2015-01-07
申请号：KR1020130058112
申请日：2013-05-23
Applicant: 한국과학기술원
IPC: G06F17/16
Abstract: 본 발명의 일실시예는 선형 판별 분석을 이용하여 특징을 추출하는 데에 복잡도를 줄이는 방법과 그 시스템에 관한 것이다. 특징 추출기의 복잡도를 줄이는 방법에 있어서, 부류의 개수가 c일 때 일대다 방법을 이용하여 표식 벡터를 c개의 두 부류 표식 벡터로 나누는 (부류의 개수가 2일 때는 한 개의 두 부류 표식 벡터) (1) 단계; 특징 추출기의 자료 행렬을 이용하여 문제 행렬 을 계산하는 (2) 단계; 문제 행렬 을 이용하여 변형 행렬 을 계산하는 (3) 단계-μ
H 는 자료 행렬로부터 적절히 정할 수 있는 양수이고 N은 1이상의 정수이며, 1
NxN 은 모든 원소가 1인 NxN의 행렬임-; 촐레스키(Cholesky) 분해를 이용하여 변형 행렬 을 으로 분해하는 (4) 단계; 두 부류 표식 벡터로부터 에르미트 벡터(Hermitian Vector) 을 계산하는 (5) 단계; 기분해 벡터 을 이용하여 j번째 부류의 최적해 를 획득하는 (6) 단계; 최적해 를 이용하여 j번째 부류의 선형 판별 벡터 를 계산하는 (7) 단계; 및 특징 추출기의 바이어스를 계산하는 (8) 단계를 포함하는 특징 추출기의 특징 추출 방법이 제공될 수 있다.
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