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1. 发明申请

US20120321017A1 TRANSMISSION BEAMFORMING METHOD AND APPARATUS IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING-BASED MIMO WIRELESS SYSTEM 有权
标题翻译：基于频分多路复用的MIMO无线系统中的传输波束形成方法及装置
公开(公告)号：US20120321017A1
公开(公告)日：2012-12-20
申请号：US13520794
申请日：2011-01-07
申请人： Yong-Hwan Lee , O-Jin Kwon , Keon-Wook Lee
发明人： Yong-Hwan Lee , O-Jin Kwon , Keon-Wook Lee
IPC分类号： H04B15/00
CPC分类号： H04B7/0639 , H04B7/0641 , H04B7/0663 , H04L5/0023 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/03949
摘要： The present invention relates to a transmission beamforming method and apparatus in an orthogonal frequency division multiplexing (OFDM)-based MIMO wireless system. In particular, the present invention relates to a transmission beamforming method in an OFDM-based MIMO wireless system and an apparatus therefor, wherein the transmission beamforming method comprises: estimating a channel from a received pilot signal and obtaining time for the estimating channel and 2D channel correlation information of a frequency band; obtaining estimated channel information based on the channel correlation information; obtaining differential information that represents a difference between the current channel and the estimated channel and quantizing the differential information; and generating a transmission beam weight by using a predefined code book from the quantized differential information. The present invention may also provide a method and apparatus for reducing the channel quantization error and feedback load by employing the OFDM-based MIMO in a wireless communication system using a transmission beamforming scheme, wherein a receiver estimates current channel information by using time and 2D channel correlation information of a frequency based on the previous channel information, compares the estimated current channel information with an actual channel and then feeds back the differential channel information, i.e., the difference between the estimated channel and the actual channel, to a transmitter.
摘要翻译：本发明涉及一种基于正交频分复用（OFDM）的MIMO无线系统中的发射波束形成方法和装置。具体地说，本发明涉及一种基于OFDM的MIMO无线系统中的发送波束形成方法及其装置，其中，所述发送波束形成方法包括：从接收的导频信号估计信道，并获得估计信道和2D信道的时间频带的相关信息; 基于信道相关信息获取估计信道信息; 获取表示当前信道与估计信道之间的差分的差分信息并量化差分信息; 以及通过使用来自所述量化的差分信息的预定义码本来生成传输束权重。本发明还可以提供一种通过在使用传输波束成形方案的无线通信系统中采用基于OFDM的MIMO来减少信道量化误差和反馈负载的方法和装置，其中接收机通过使用时间和2D信道来估计当前信道信息基于先前信道信息的频率的相关信息，将估计的当前信道信息与实际信道进行比较，然后将差分信道信息（即估计信道与实际信道之间的差）反馈给发射机。

2. 发明授权

US08873664B2 Transmission beamforming method and apparatus in an orthogonal frequency division multiplexing-based MIMO wireless system 有权
标题翻译：基于正交频分复用的MIMO无线系统中的传输波束成形方法和装置
公开(公告)号：US08873664B2
公开(公告)日：2014-10-28
申请号：US13520794
申请日：2011-01-07
申请人： Yong-Hwan Lee , O-Jin Kwon , Keon-Wook Lee
发明人： Yong-Hwan Lee , O-Jin Kwon , Keon-Wook Lee
IPC分类号： H04B7/02 , H04B7/06 , H04L5/00 , H04L25/02 , H04L25/03
CPC分类号： H04B7/0639 , H04B7/0641 , H04B7/0663 , H04L5/0023 , H04L25/0204 , H04L25/022 , H04L25/0224 , H04L25/03949
摘要： The present invention relates to a transmission beamforming method and apparatus in an orthogonal frequency division multiplexing (OFDM)-based MIMO wireless system. In particular, the present invention relates to a transmission beamforming method in an OFDM-based MIMO wireless system and an apparatus therefor, wherein the transmission beamforming method comprises: estimating a channel from a received pilot signal and obtaining time for the estimating channel and 2D channel correlation information of a frequency band; obtaining estimated channel information based on the channel correlation information; obtaining differential information that represents a difference between the current channel and the estimated channel and quantizing the differential information; and generating a transmission beam weight by using a predefined code book from the quantized differential information. The present invention may also provide a method and apparatus for reducing the channel quantization error and feedback load by employing the OFDM-based MIMO in a wireless communication system using a transmission beamforming scheme, wherein a receiver estimates current channel information by using time and 2D channel correlation information of a frequency based on the previous channel information, compares the estimated current channel information with an actual channel and then feeds back the differential channel information, i.e., the difference between the estimated channel and the actual channel, to a transmitter.
摘要翻译：本发明涉及一种基于正交频分复用（OFDM）的MIMO无线系统中的发射波束形成方法和装置。具体地说，本发明涉及一种基于OFDM的MIMO无线系统中的发送波束形成方法及其装置，其中，所述发送波束形成方法包括：从接收的导频信号估计信道，并获得估计信道和2D信道的时间频带的相关信息; 基于信道相关信息获取估计信道信息; 获取表示当前信道与估计信道之间的差分的差分信息并量化差分信息; 以及通过使用来自所述量化的差分信息的预定义码本来生成传输束权重。本发明还可以提供一种通过在使用传输波束成形方案的无线通信系统中采用基于OFDM的MIMO来减少信道量化误差和反馈负载的方法和装置，其中接收机通过使用时间和2D信道来估计当前信道信息基于先前信道信息的频率的相关信息，将估计的当前信道信息与实际信道进行比较，然后将差分信道信息（即估计信道与实际信道之间的差）反馈给发射机。

3. 发明授权

US08693568B2 Method and apparatus for estimating channel using dedicated pilot signal in OFDM-based wireless communication system 有权
标题翻译：在基于OFDM的无线通信系统中使用专用导频信号估计信道的方法和装置
公开(公告)号：US08693568B2
公开(公告)日：2014-04-08
申请号：US13479939
申请日：2012-05-24
申请人： Yong-Hwan Lee , Han-Jun Park , Keon-Wook Lee
发明人： Yong-Hwan Lee , Han-Jun Park , Keon-Wook Lee
IPC分类号： H04B7/02
CPC分类号： H04L25/0228 , H04L25/0208
摘要： The invention relates to a method for channel estimation using a dedicated pilot signal in an OFDM-based communication system with multi-antenna transmission techniques. The receiver estimates the statistical characteristics of a virtual channel generated by beamforming by exploiting the statistical characteristics of common pilot channel, determines the optimum dedicated pilot pattern, and estimates the channel from dedicated pilot signal transmitted in an optimum pattern by means of AMMSE interpolation. The invention minimizes the channel estimation error by exploiting the statistical characteristics of the virtual channel, and optimally determines the dedicated pilot pattern according to the operation environment to maximize the transmission performance in terms of the pilot signaling overhead and the channel estimation error. In particular, the invention is very effective in low signal-to-interference plus noise power ratio (SINR) operation environments.
摘要翻译：本发明涉及一种在具有多天线传输技术的基于OFDM的通信系统中使用专用导频信号进行信道估计的方法。接收器通过利用公共导频信道的统计特性来估计由波束成形产生的虚拟信道的统计特性，确定最佳专用导频模式，并且通过AMMSE插值从以最佳模式发送的专用导频信号估计信道。本发明通过利用虚拟信道的统计特性来最小化信道估计误差，并根据操作环境最佳地确定专用导频模式，以根据导频信令开销和信道估计误差来最大化传输性能。特别地，本发明在低信噪比加噪声功率比（SINR）操作环境中非常有效。

4. 发明申请

US20130034177A1 METHOD AND APPARATUS FOR ESTIMATING CHANNEL USING DEDICATED PILOT SIGNAL IN OFDM-BASED WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：在基于OFDM的无线通信系统中使用专用导频信号估计信道的方法和装置
公开(公告)号：US20130034177A1
公开(公告)日：2013-02-07
申请号：US13479939
申请日：2012-05-24
申请人： Yong-Hwan Lee , Han-Jun Park , Keon-Wook Lee
发明人： Yong-Hwan Lee , Han-Jun Park , Keon-Wook Lee
IPC分类号： H04L27/28
CPC分类号： H04L25/0228 , H04L25/0208
摘要： The invention relates to a method for channel estimation using a dedicated pilot signal in an OFDM-based communication system with multi-antenna transmission techniques. The receiver estimates the statistical characteristics of a virtual channel generated by beamforming by exploiting the statistical characteristics of common pilot channel, determines the optimum dedicated pilot pattern, and estimates the channel from dedicated pilot signal transmitted in an optimum pattern by means of AMMSE interpolation. The invention minimizes the channel estimation error by exploiting the statistical characteristics of the virtual channel, and optimally determines the dedicated pilot pattern according to the operation environment to maximize the transmission performance in terms of the pilot signaling overhead and the channel estimation error. In particular, the invention is very effective in low signal-to-interference plus noise power ratio (SINR) operation environments.
摘要翻译：本发明涉及一种在具有多天线传输技术的基于OFDM的通信系统中使用专用导频信号进行信道估计的方法。接收器通过利用公共导频信道的统计特性来估计由波束成形产生的虚拟信道的统计特性，确定最佳专用导频模式，并且通过AMMSE插值从以最佳模式发送的专用导频信号估计信道。本发明通过利用虚拟信道的统计特性来最小化信道估计误差，并根据操作环境最佳地确定专用导频模式，以根据导频信令开销和信道估计误差来最大化传输性能。特别地，本发明在低信噪比加噪声功率比（SINR）操作环境中非常有效。

5. 发明授权

US08009634B2 Apparatus and method for reducing other-cell interference in a broadband wireless communication system 有权
标题翻译：用于减少宽带无线通信系统中的其他小区干扰的装置和方法
公开(公告)号：US08009634B2
公开(公告)日：2011-08-30
申请号：US11766876
申请日：2007-06-22
申请人： Yong-Hwan Lee , Keon-Wook Lee
发明人： Yong-Hwan Lee , Keon-Wook Lee
IPC分类号： H04W4/00
CPC分类号： H04W36/30 , H04W36/18 , H04W88/02
摘要： An apparatus and method for avoiding interference in a broadband wireless communication system using FCS are provided. The apparatus and method include a receiver for monitoring channel statuses of neighbor cells using signals received from the neighbor cells, an active set generator for generating an active set according to at least one of the channel statuses of the neighbor cells, loads of the neighbor cells, and a performance gain from the neighbor cells, and a BS selector for selecting a serving cell from the active set according to the channel statuses of cells included in the active set. Accordingly, interference is reduced and reception performance is improved.
摘要翻译：提供了一种避免在使用FCS的宽带无线通信系统中的干扰的装置和方法。该装置和方法包括：使用从相邻小区接收的信号监视相邻小区的信道状态的接收机;根据相邻小区的信道状态中的至少一个生成活动集的活动集生成器，相邻小区的负载，以及来自相邻小区的性能增益;以及BS选择器，用于根据活动集中包括的小区的信道状态从活动集中选择服务小区。因此，降低了干扰，提高了接收性能。

6. 发明申请

US20130251001A1 Interference Signal Avoiding Device of a Frequency Hopping Spread System and Method Thereof 有权
标题翻译：跳频传播系统的干扰信号避免装置及其方法
公开(公告)号：US20130251001A1
公开(公告)日：2013-09-26
申请号：US13990745
申请日：2011-12-01
申请人： Yong-Hwan Lee , Seung-Hwan Lee , Jin-Seok Han
发明人： Yong-Hwan Lee , Seung-Hwan Lee , Jin-Seok Han
IPC分类号： H04B1/715
CPC分类号： H04B1/715 , H04B2001/7154 , H04W28/18
摘要： An interference signal avoiding device of a frequency hopping spread system and a method thereof are disclosed. A method of transmitting/receiving an interference signal avoiding signal according to the present invention includes: determining a frequency hopping channel set and a parameter of an interference signal detector in consideration of characteristics of an interference signal; detecting whether there is an interference signal with respect to frequency hopping candidate channels that are to be used for the next frequency hopping by using the determined interference signal detector; transmitting a signal through a channel that is determined by the interference signal detector that there is no interference signal among the frequency hopping candidate channels; and searching a channel through which the signal is transmitted from the frequency hopping candidate channels in order to receive the transmitted signal.
摘要翻译：公开了一种跳频扩散系统的干扰信号避免装置及其方法。根据本发明的发送/接收干扰信号避免信号的方法包括：考虑干扰信号的特性，确定跳频信道组和干扰信号检测器的参数; 通过使用所确定的干扰信号检测器检测是否存在关于要用于下一次跳频的跳频候选信道的干扰信号; 通过由所述干扰信号检测器确定的在所述跳频候选信道中不存在干扰信号的信道发送信号; 并且从跳频候选信道搜索发送信号的信道，以便接收所发送的信号。

7. 发明授权

US07640000B2 Apparatus and method for cancellation of partially overlapped crosstalk signals 有权
标题翻译：用于消除部分重叠的串扰信号的装置和方法
公开(公告)号：US07640000B2
公开(公告)日：2009-12-29
申请号：US11604898
申请日：2006-11-28
申请人： Min-Ho Cheong , Hyeong-Jun Park , Yong-Hwan Lee
发明人： Min-Ho Cheong , Hyeong-Jun Park , Yong-Hwan Lee
IPC分类号： H04B1/10 , H03D1/04
CPC分类号： H04B1/0475
摘要： The present invention is related to a partially overlapped single-carrier crosstalk signal cancellation method and an apparatus using the same. For this purpose, the present invention provides a crosstalk canceller including a pre-processor for frequency down-shifting an input signal, a crosstalk signal cancellation module for canceling the crosstalk signal by dividing the input signal by an interpolation ratio, a post-processor for converting an output of the crosstalk signal cancellation modulation into a passband signal, and an error feedback processor for performing a decimation operation on a residual crosstalk signal and feeding backing the decimated residual crosstalk signal to the crosstalk signal cancellation module. In addition, the present invention provides a crosstalk signal cancellation method for performing interpolation and filtering operations by frequency down-shifting an input signal including a crosstalk signal to a baseband and decimating a residual crosstalk signal by frequency-shifting to an original signal frequency.
摘要翻译：本发明涉及部分重叠的单载波串扰信号消除方法及其使用方法。为此目的，本发明提供了一种串扰消除器，包括用于降频输入信号的预处理器，用于通过将输入信号除以插值比来消除串扰信号的串扰信号消除模块，后处理器将串扰信号消除调制的输出转换为通带信号，以及误差反馈处理器，用于对残留串扰信号执行抽取操作，并将抽取的残留串扰信号馈送到串扰信号消除模块。此外，本发明提供了一种串扰信号消除方法，用于通过将包括串扰信号的输入信号降频到基带并通过频移到原始信号频率来抽取残留串扰信号来执行插值和滤波操作。

8. 发明申请

US20050201328A1 Method for designing an uplink pilot signal and a method and a system for estimating a channel in a multicarrier code division multiple access system 审中-公开
标题翻译：用于设计上行链路导频信号的方法以及用于估计多载波码分多址系统中的信道的方法和系统
公开(公告)号：US20050201328A1
公开(公告)日：2005-09-15
申请号：US11035848
申请日：2005-01-14
申请人： June Moon , Yong-Hwan Lee , Hyun-Seok Yu
发明人： June Moon , Yong-Hwan Lee , Hyun-Seok Yu
IPC分类号： H04J11/00 , H04B1/707 , H04B1/76 , H04B7/26 , H04J13/16 , H04J13/18 , H04L25/02 , H04L27/26 , H04W56/00 , H04W76/02 , H04W92/10 , H04Q7/00
CPC分类号： H04L27/2613 , H04L25/0226
摘要： A channel estimating method in a wireless communication system in which a plurality of MSs communicate with a BS on multiple carriers. Each of the MSs transmits to the BS a pilot signal designed to have simultaneous time-domain and frequency-domain responses. The BS is synchronized to the MS using the received pilot signal and performs channel estimation for the MS.
摘要翻译：无线通信系统中的信道估计方法，其中多个MS与多个载波上的BS进行通信。每个MS向BS发送被设计为具有同时的时域和频域响应的导频信号。 BS使用接收到的导频信号与MS同步，并为MS执行信道估计。

9. 发明授权

US5514643A 2-aminothiazolecarboxamide derivatives, processes for preparing the same and use thereof for controlling phytopathogenic organisms 失效
标题翻译： 2-氨基噻唑甲酰胺衍生物，其制备方法及其用于控制植物病原生物体的用途
公开(公告)号：US5514643A
公开(公告)日：1996-05-07
申请号：US287917
申请日：1994-08-09
申请人： Yo S. Rew , Jinho Cho , Choon S. Ra , Sei-chang Ahn , Sung K. Kim , Yong-Hwan Lee , Bon Y. Jung , Woo B. Choi , Young H. Rhee , Man Y. Yoon , Sung W. Chun
发明人： Yo S. Rew , Jinho Cho , Choon S. Ra , Sei-chang Ahn , Sung K. Kim , Yong-Hwan Lee , Bon Y. Jung , Woo B. Choi , Young H. Rhee , Man Y. Yoon , Sung W. Chun
IPC分类号： C07D417/12 , A01N43/78 , A01N47/18 , C07D277/20 , C07D277/56 , C07D277/40 , C07D277/42 , C07D277/44
CPC分类号： C07D417/12 , A01N43/78 , A01N47/18 , C07D277/56
摘要： The present invention relates to a novel 2-aminothiazolecarboxamide derivative represented by the following general formula (I): ##STR1## in which R.sup.1 -R.sup.5 are defined herein, which is a fungicidal agent useful for controlling phytopathogenic organisms. In addition, the present invention also relates to a process for preparing the novel 2-aminothiazolecarboxamide derivative of formula (I) and use of the compound of formula (I) as an agent for controlling phytopathogenic organisms.
摘要翻译：本发明涉及由以下通式（I）表示的新颖的2-氨基噻唑甲酰胺衍生物：其中R1-R5定义在本文中，其是可用于防治植物病原生物的杀真菌剂。此外，本发明还涉及制备式（I）的新型2-氨基噻唑甲酰胺衍生物的方法和式（I）化合物作为防治植物病原生物的试剂的用途。

10. 发明申请

US20150036545A1 Self-Construction System of Wireless Sensor Network and Method for Self-Construction of Wireless Sensor Network Using the Same 有权
标题翻译：无线传感器网络自建系统及其使用无线传感器网络自建的方法
公开(公告)号：US20150036545A1
公开(公告)日：2015-02-05
申请号：US14001033
申请日：2012-01-19
申请人： Yong-Hwan Lee , Hyung Sin Kim , Seung Hwan Lee
发明人： Yong-Hwan Lee , Hyung Sin Kim , Seung Hwan Lee
IPC分类号： H04L29/12 , H04L12/753 , H04W40/24
CPC分类号： H04L61/2038 , H04L45/02 , H04L45/48 , H04W40/246 , H04W84/18 , H04W84/20
摘要： Disclosed is a self-construction system of a wireless sensor network, and a method for self-construction of a wireless sensor network using the same. Also disclosed is a method for self-construction of a cluster tree structure-based wireless sensor network (WSN). The present invention can connect devices distributed densely in a wide area to a network while maintaining the advantages of a conventional tree-structured network, such as the reduction of time required for network construction, traffic by the exchange of control command messages, and a load for a routing path search, and thus can provide a WSN having an improved self-construction performance.
摘要翻译：公开了一种无线传感器网络的自建系统，以及使用该无线传感器网络的无线传感器网络的自建构方法。还公开了一种用于基于簇树结构的无线传感器网络（WSN）的自建构的方法。本发明可以将在广域上密集分布的设备连接到网络，同时保持常规树状结构网络的优点，例如网络构建所需的时间减少，交换控制命令消息的业务量以及负载用于路由路径搜索，从而可以提供具有改进的自建构性能的WSN。

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