公开(公告)号：US08467467B2

公开(公告)日：2013-06-18

申请号：US12109611

申请日：2008-04-25

Applicant: Yong-Hwan Lee ,  JaeYun Ko

Inventor： Yong-Hwan Lee ,  JaeYun Ko

IPC: H04B7/02

CPC classification number: H04B7/0443 ,  H04B7/0465

Abstract: An apparatus and method for partial adaptive transmission in a Multiple-Input Multiple-Output (MIMO) system are provided. The method includes estimating a correlation matrix between Transmit (Tx) antennas and an average Signal to Noise Ratio (SNR) and generating a long-term precoding matrix composed of a predetermined number of dominant eigen dimensions of the correlation matrix by using the estimated correlation matrix and average SNR. The apparatus and method provide a new adaptive MIMO transmission method capable of reducing the feedback information overhead and maximizing performance.

Abstract translation: 提供了一种用于多输入多输出（MIMO）系统中的部分自适应传输的装置和方法。 该方法包括估计发射（Tx）天线与平均信噪比（SNR）之间的相关矩阵，并且通过使用估计的相关矩阵来生成由相关矩阵的预定数量的主要特征维度组成的长期预编码矩阵 和平均SNR。 该装置和方法提供了一种能够减少反馈信息开销和最大化性能的新的自适应MIMO传输方法。

公开(公告)号：US20110183692A1

公开(公告)日：2011-07-28

申请号：US13057581

申请日：2009-08-04

Applicant: Yong Hwan Lee ,  Seung-Hwan Lee

Inventor： Yong Hwan Lee ,  Seung-Hwan Lee

IPC: H04B15/00 ,  H04B7/26

CPC classification number: H04B17/345

Abstract: The present invention relates to an apparatus for removing interference between neighbor cells in a radio communication system, and to a method for same. The apparatus according to the present invention includes a receiving unit which receives receiving power information and signal-to-noise ratio information of a neighbor cell base station from multiple receiving antennas, a first determination unit for determining the number of major neighbor cell interference signals by using the received receiving power information and the signal-to-noise ratio information, a second determination unit for determining a candidate signal vector of a target signal in accordance with the determined number of major neighbor cell interference signals, the received signal-to-noise ratio, and the number of the multiple receiving antennas, a third determination unit for determining a candidate signal matrix of the major neighbor cell interference signals on the basis of the determined candidate signal vector of the target signal, and an estimation unit for estimating signals transmitted from the target base station or the neighbor base station by applying the determined candidate signal matrix of the major neighbor cell interference signals to the method of maximum likelihood. Whereby, the present invention removes interference between neighbor cells in an efficient manner, maintains the performance thereof, and reduces complexity at the receiving end.

Abstract translation: 本发明涉及一种用于消除无线电通信系统中的相邻小区之间的干扰的装置及其方法。 根据本发明的装置包括：接收单元，其从多个接收天线接收相邻小区基站的接收功率信息和信噪比信息;第一确定单元，用于通过以下步骤确定主相邻小区干扰信号的数量： 使用接收到的接收功率信息和信噪比信息，第二确定单元，用于根据所确定的主要相邻小区干扰信号的数量确定目标信号的候选信号矢量，所接收的信号与噪声 比率和多个接收天线的数量，第三确定单元，用于基于所确定的目标信号的候选信号矢量来确定主相邻小区干扰信号的候选信号矩阵;以及估计单元，用于估计发送的信号 从目标基站或相邻基站通过应用 确定主要相邻小区干扰信号的候选信号矩阵为最大似然方法。 由此，本发明以有效的方式去除相邻小区之间的干扰，保持其性能，并降低接收端的复杂度。

公开(公告)号：US07835323B2

公开(公告)日：2010-11-16

申请号：US11405827

申请日：2006-04-18

Applicant: Yong-Hwan Lee ,  Jae-Yun Ko

Inventor： Yong-Hwan Lee ,  Jae-Yun Ko

IPC: H04W4/00

CPC classification number: H04L27/2608 ,  H04J13/18 ,  H04L1/0006 ,  H04L1/0026 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/085

Abstract: A multicarrier communication system is provided that divides a full frequency band into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency-time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission. A mobile subscriber (MS) measures a channel state, extracts channel state information corresponding to the channel state, estimates a segment type using the extracted channel state information, and if there is a need for a change in the segment type, the MS transmits a segment type change request message to a base station (BS). Upon receiving a segment type change grant message from the BS, the MS receives data in a segment type corresponding to the received message.

Abstract translation: 提供一种多载波通信系统，其将全频带划分成多个子载波频带，生成具有由预定数量的子频带占用的频率时间域和预定数量的时间间隔的多个段 并且根据每个段对多个段类型进行分类，以进行数据传输。 移动用户（MS）测量信道状态，提取与信道状态相对应的信道状态信息，使用所提取的信道状态信息来估计一个片段类型，并且如果需要片段类型的改变，则MS发送 段类型改变请求消息到基站（BS）。 在从BS接收到段类型改变授权消息时，MS以对应于接收到的消息的段类型接收数据。

公开(公告)号：US07778644B2

公开(公告)日：2010-08-17

申请号：US11800683

申请日：2007-05-07

Applicant: Sunghyun Choi ,  Youngkyu Choi ,  Yong-Hwan Lee

Inventor： Sunghyun Choi ,  Youngkyu Choi ,  Yong-Hwan Lee

IPC: H04W72/00 ,  H04W4/00

CPC classification number: H04W72/087

Abstract: Disclosed is an apparatus and method for managing resources in a mobile communication system. The method includes classifying an overall frequency band into a plurality of segment types defined in time and frequency domains by considering a channel condition between a mobile station and the base station and a QoS level required by the mobile station, if data to be transmitted is data to be transmitted in real time, allocating the data to real-time type segments in such a manner as to satisfy a minimum QoS level for the data, and when there are real-time data remaining after allocating the data, and non-real-time type segments for allocating data to be transmitted in non-real time, diverting and allocating the real-time data to the non-real-time type segments.

Abstract translation: 公开了一种用于管理移动通信系统中的资源的装置和方法。 该方法包括：通过考虑移动台与基站之间的信道状况以及移动台所需的QoS等级，将总频带分类为在时域和频域中定义的多个分段类型，如果要发送的数据是数据 要实时发送，以满足数据的最小QoS​​等级的方式将数据分配给实时类型段，并且在分配数据之后存在实时数据时，以及非实时类型段， 用于分配要以非实时发送的数据的时间类型段，将实时数据转移并分配给非实时类型段。

公开(公告)号：US20090203335A1

公开(公告)日：2009-08-13

申请号：US12109611

申请日：2008-04-25

Applicant: Yong-Hwan LEE ,  JaeYun KO

Inventor： Yong-Hwan LEE ,  JaeYun KO

IPC: H04B1/04 ,  H04B1/02

CPC classification number: H04B7/0443 ,  H04B7/0465

Abstract: An apparatus and method for partial adaptive transmission in a Multiple-Input Multiple-Output (MIMO) system are provided. The method includes estimating a correlation matrix between Transmit (Tx) antennas and an average Signal to Noise Ratio (SNR) and generating a long-term precoding matrix composed of a predetermined number of dominant eigen dimensions of the correlation matrix by using the estimated correlation matrix and average SNR. The apparatus and method provide a new adaptive MIMO transmission method capable of reducing the feedback information overhead and maximizing performance.

Abstract translation: 提供了一种用于多输入多输出（MIMO）系统中的部分自适应传输的装置和方法。 该方法包括估计发射（Tx）天线与平均信噪比（SNR）之间的相关矩阵，并且通过使用估计的相关矩阵来生成由相关矩阵的预定数量的主要特征维度组成的长期预编码矩阵 和平均SNR。 该装置和方法提供了一种能够减少反馈信息开销和最大化性能的新的自适应MIMO传输方法。

公开(公告)号：US07457356B2

公开(公告)日：2008-11-25

申请号：US10979829

申请日：2004-11-01

Applicant: Yong Hwan Lee ,  Jong Moon Kim

Inventor： Yong Hwan Lee ,  Jong Moon Kim

IPC: H03K5/159

CPC classification number: H04L25/03146 ,  H04L2025/03382 ,  H04L2025/0349 ,  H04L2025/03509 ,  H04L2025/03605 ,  H04L2025/0377

Abstract: A method of initializing an equalizer of VSB DTV receiver and an equalizer using the same are provided. The method includes the steps of: obtaining a channel estimation value by estimating an impulse response of a channel from a received signal, initializing a backward filter by using the channel estimation value; generating an imaginary training signal by an arithmetical operation for the channel estimation value and a generated known training sequence; and initializing a forward filter by using the imaginary training signal.

Abstract translation: 提供了一种初始化VSB DTV接收机的均衡器和使用其的均衡器的方法。 该方法包括以下步骤：通过从接收信号估计信道的脉冲响应，通过使用信道估计值初始化反向滤波器来获得信道估计值; 通过用于信道估计值的算术运算和产生的已知训练序列来产生虚拟训练信号; 并通过使用虚拟训练信号来初始化正向滤波器。

公开(公告)号：US20060234704A1

公开(公告)日：2006-10-19

申请号：US11405827

申请日：2006-04-18

Applicant: Yong-Hwan Lee ,  Jae-Yun Ko

Inventor： Yong-Hwan Lee ,  Jae-Yun Ko

IPC: H04Q7/20

CPC classification number: H04L27/2608 ,  H04J13/18 ,  H04L1/0006 ,  H04L1/0026 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/085

Abstract: A multicarrier communication system divides a full frequency band into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency-time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission. A mobile subscriber (MS) measures a channel state, extracts channel state information corresponding to the channel state, estimates a segment type using the extracted channel state information, and determines whether there is a need for a change in a segment type allocated to the MS itself. If there is a need for a change in the segment type, the MS transmits a segment type change request message to a base station (BS). Upon receiving a segment type change grant message from the BS in response to the segment type change request message, the MS receives data in a segment type corresponding to the received message.

Abstract translation: 多载波通信系统将全频带划分为多个子载波频带，生成具有预定数量的子频带和预定数量的时间间隔占据的频率 - 时域的多个分段，并且将 根据每个段的多个段类型用于数据传输。 移动用户（MS）测量信道状态，提取与信道状态对应的信道状态信息，使用所提取的信道状态信息估计一个片段类型，并且确定是否需要对分配给该MS的片段类型进行改变 本身。 如果需要改变段类型，则MS向基站（BS）发送段类型改变请求消息。 响应于段类型改变请求消息，从BS接收到段类型改变授权消息时，MS以对应于接收到的消息的段类型接收数据。

公开(公告)号：US20060150050A1

公开(公告)日：2006-07-06

申请号：US11324701

申请日：2006-01-03

Applicant: Sunghyun Choi ,  Youngkyu Choi ,  Yong-Hwan Lee

Inventor： Sunghyun Choi ,  Youngkyu Choi ,  Yong-Hwan Lee

IPC: H04L1/18 ,  G08C25/02

CPC classification number: H04L1/1877 ,  H04L1/1803 ,  H04L1/1806 ,  H04L1/1809 ,  H04L1/1887

Abstract: In retransmitting data by a transmitter in a mobile communication system, a transmitter sets an allowed number-of-transmissions Ctx for an initial transmission and a retransmission of a second data unit based on a first data unit, fragments the first data unit into N second data units, and then initially-transmits or retransmits the N second data units to the receiver within the allowed number-of-transmissions Ctx. The receiver receives the second data units, detects normal receipt or abnormal receipt of the received second data units, and transmits a response to the transmitter according to the detection result.

Abstract translation: 在移动通信系统中由发射机重传数据时，发射机基于第一数据单元设置用于初始传输和第二数据单元的重传的允许发射次数C tx， 将第一数据单元分段成N个第二数据单元，然后在允许的发送次数C tx 中初始向接收机发送N个第二数据单元或重传N个第二数据单元。 接收机接收第二数据单元，检测接收到的第二数据单元的正常接收或异常接收，并根据检测结果向发射机发送响应。

公开(公告)号：US06613323B2

公开(公告)日：2003-09-02

申请号：US09735660

申请日：2000-12-14

Applicant: Boung-Jun Oh ,  Young Soon Kim ,  Moon Kyung Ko ,  Hyun Hwa Lee ,  Chae Eun Song ,  Yong Hwan Lee ,  Cheol-Yong Bae

Inventor： Boung-Jun Oh ,  Young Soon Kim ,  Moon Kyung Ko ,  Hyun Hwa Lee ,  Chae Eun Song ,  Yong Hwan Lee ,  Cheol-Yong Bae

IPC: A61K3846

CPC classification number: C12N15/8282 ,  A01N63/02 ,  A01N65/08 ,  C12N9/18

Abstract: This invention relates to the use of enzymes for protection of plants against phytopathogenic fungi. In particular, the invention relates to the use of enzymes showing esterase activity for protecting plants against phytopathogenic fungi by inhibition of fungal appressorium formation. In addition, the invention relates to the use of recombinant pepper esterase expressed by using Escherichia coli to protect plants against phytopathogenic fungi by inhibition of fungal appressorium formation.

公开(公告)号：US09397734B2

公开(公告)日：2016-07-19

申请号：US13639845

申请日：2011-04-06

Applicant: Yong Hwan Lee ,  Hee-Nam Cho ,  Jin-Woo Lee

Inventor： Yong Hwan Lee ,  Hee-Nam Cho ,  Jin-Woo Lee

IPC: H04B7/04 ,  H04W24/10 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0434 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/0647 ,  H04W24/10

Abstract: A method of signal transmission based on differentially quantized channel information in a multi-antenna wireless communication system which can transmit signal to multiple mobile stations simultaneously through multiple transmit antennas includes a main codebook reporting step of each mobile station for quantizing channel correlation information (CCI) using a main-codebook and reporting an index of the main codebook, which corresponds to the quantized CCI, to a base station. A sub-codebook reporting step of each mobile station for quantizing the change of the CCI between the quantization interval using a sub-codebook and reporting an index of the sub-codebook, which corresponds to the quantized CCI change, to a base station. A multi-user eigen-beam transmission step of the base station for generating multiple eigen-beams using the index of the main-codebook or sub-codebook reported from mobile stations and transmitting them to multiple users simultaneously.

Abstract translation: 一种能够通过多个发送天线同时发送信号到多个移动站的多天线无线通信系统中的基于差分量化信道信息的信号发送方法，包括：每个移动站的主码本报告步骤，用于量化信道相关信息（CCI） 使用主码本并将与量化的CCI对应的主码本的索引报告给基站。 每个移动站的子码本报告步骤，用于使用子码本量化量化间隔之间的CCI的变化，并将对应于量化的CCI改变的子码本的索引报告给基站。 基站的多用户特征波束发送步骤，用于使用从移动台报告的主码本或子码本的索引来生成多个本征波束，并将它们同时发送到多个用户。