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    Apparatus and method for detecting signal based on QR-decomposition in multiple input multiple output wireless communication system
    5.
    发明授权
    Apparatus and method for detecting signal based on QR-decomposition in multiple input multiple output wireless communication system 有权
    在多输入多输出无线通信系统中基于QR分解检测信号的装置和方法

    公开(公告)号：US08345806B2

    公开(公告)日：2013-01-01

    申请号：US12154954

    申请日：2008-05-28

    申请人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Jong-Ho Lee ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim ,  Ki-Hwan Jeon

    发明人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Jong-Ho Lee ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim ,  Ki-Hwan Jeon

    IPC分类号： H04B7/10

    CPC分类号： H04L25/0206

    摘要： An apparatus and a method are provided for detecting N number of TX signals in a MIMO wireless communication system. The apparatus includes an RF processor, a channel estimator, and a signal detector. The RF processor converts signals, received through multiple antennas, into baseband signals. The channel estimator estimates channel information of the respective antennas by using the received signals. The signal detector arranges the baseband signals of the respective antennas on the basis of the channel information, calculates a threshold value of each stage, and selects symbols with a cumulative metric smaller than or equal to the threshold value as candidates at each stage, to detect a TX signal vector with N number of symbols.

    摘要翻译： 提供了一种用于在MIMO无线通信系统中检测N个TX信号的装置和方法。 该装置包括RF处理器，信道估计器和信号检测器。 RF处理器将通过多个天线接收的信号转换为基带信号。 信道估计器通过使用所接收的信号来估计各个天线的信道信息。 信号检测器基于信道信息布置各个天线的基带信号，计算每一级的阈值，并且选择具有小于或等于阈值的累积度量的符号作为每个级的候选，以检测 具有N个符号的TX信号向量。

    Apparatus and method for transmitting feedback information in communication system
    7.
    发明授权
    Apparatus and method for transmitting feedback information in communication system 有权
    在通信系统中发送反馈信息的装置和方法

    公开(公告)号：US08194773B2

    公开(公告)日：2012-06-05

    申请号：US12284922

    申请日：2008-09-26

    申请人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Sung-Soo Hwang ,  Jong-Ho Lee

    发明人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Sung-Soo Hwang ,  Jong-Ho Lee

    IPC分类号： H04L5/12 ,  H04L27/28

    CPC分类号： H04L25/03343 ,  H04L5/0053 ,  H04L2025/03414 ,  H04L2025/03802

    摘要： Disclosed is a system and method for transmitting feedback information in a communication system. A receiver calculates a minimum distance of each two symbol vectors among all symbol vectors which can be received through a kth subcarrier among a plurality of subcarriers, in which a channel state of the kth subcarrier and a jth precoder among precoders included in a codebook set are applied; calculates sums of minimum distances by adding minimum distances calculated for the plurality of subcarriers according to each precoder; determines a precoder corresponding to a value greatest among the sums of minimum distances calculated according to the precoders, as a precoder representing the plurality of subcarriers; and feeds the feedback information including a precoder index of the determined precoder back to a transmitter.

    摘要翻译： 公开了一种用于在通信系统中发送反馈信息的系统和方法。 接收机计算在多个子载波中可以通过第k个子载波接收的所有符号向量中的每两个符号向量的最小距离，其中包括在码本集中的预编码器中第k个副载波和第j个预编码器的信道状态是 应用; 通过根据每个预编码器添加针对多个子载波计算的最小距离来计算最小距离的和; 确定对应于根据预编码器计算的最小距离之和中最大值的预编码器作为表示多个子载波的预编码器; 并将包括所确定的预编码器的预编码器索引的反馈信息反馈给发射机。

    Apparatus and method for transmitting feedback information in communication system
    8.
    发明申请
    Apparatus and method for transmitting feedback information in communication system 有权
    在通信系统中发送反馈信息的装置和方法

    公开(公告)号：US20090086840A1

    公开(公告)日：2009-04-02

    申请号：US12284922

    申请日：2008-09-26

    申请人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Sung-Soo Hwang ,  Jong-Ho Lee

    发明人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Sung-Soo Hwang ,  Jong-Ho Lee

    IPC分类号： H04L5/12 ,  H04L27/28

    CPC分类号： H04L25/03343 ,  H04L5/0053 ,  H04L2025/03414 ,  H04L2025/03802

    摘要： Disclosed is a system and method for transmitting feedback information in a communication system. A receiver calculates a minimum distance of each two symbol vectors among all symbol vectors which can be received through a kth subcarrier among a plurality of subcarriers, in which a channel state of the kth subcarrier and a jth precoder among precoders included in a codebook set are applied; calculates sums of minimum distances by adding minimum distances calculated for the plurality of subcarriers according to each precoder; determines a precoder corresponding to a value greatest among the sums of minimum distances calculated according to the precoders, as a precoder representing the plurality of subcarriers; and feeds the feedback information including a precoder index of the determined precoder back to a transmitter.

    摘要翻译： 公开了一种用于在通信系统中发送反馈信息的系统和方法。 接收机计算在多个子载波中可以通过第k个子载波接收的所有符号向量中的每两个符号向量的最小距离，其中包括在码本集中的预编码器中的第k个副载波和第j个预编码器的信道状态是 应用; 通过根据每个预编码器添加针对多个子载波计算的最小距离来计算最小距离的和; 确定对应于根据预编码器计算的最小距离之和中最大值的预编码器作为表示多个子载波的预编码器; 并将包括所确定的预编码器的预编码器索引的反馈信息反馈给发射机。

    Apparatus and method for detecting signal based on QR-decomposition in multiple input multiple output wireless communication system
    9.
    发明申请
    Apparatus and method for detecting signal based on QR-decomposition in multiple input multiple output wireless communication system 有权
    在多输入多输出无线通信系统中基于QR分解检测信号的装置和方法

    公开(公告)号：US20080298491A1

    公开(公告)日：2008-12-04

    申请号：US12154954

    申请日：2008-05-28

    申请人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Jong-Ho Lee ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim ,  Ki-Hwan Jeon

    发明人： Sung-Yoon Jung ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Jong-Ho Lee ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim ,  Ki-Hwan Jeon

    IPC分类号： H04L27/28

    CPC分类号： H04L25/0206

    摘要： An apparatus and a method are provided for detecting N number of TX signals in a MIMO wireless communication system. The apparatus includes an RF processor, a channel estimator, and a signal detector. The RF processor converts signals, received through multiple antennas, into baseband signals. The channel estimator estimates channel information of the respective antennas by using the received signals. The signal detector arranges the baseband signals of the respective antennas on the basis of the channel information, calculates a threshold value of each stage, and selects symbols with a cumulative metric smaller than or equal to the threshold value as candidates at each stage, to detect a TX signal vector with N number of symbols.

    摘要翻译： 提供了一种用于在MIMO无线通信系统中检测N个TX信号的装置和方法。 该装置包括RF处理器，信道估计器和信号检测器。 RF处理器将通过多个天线接收的信号转换为基带信号。 信道估计器通过使用所接收的信号来估计各个天线的信道信息。 信号检测器基于信道信息布置各个天线的基带信号，计算每一级的阈值，并且选择具有小于或等于阈值的累积度量的符号作为每个级的候选，以检测 具有N个符号的TX信号向量。

    Preamble design method for reducing overhead during handover in hierarchical cellular system
    10.
    发明授权
    Preamble design method for reducing overhead during handover in hierarchical cellular system 有权
    用于在分层蜂窝系统中减少切换期间的开销的前导码设计方法

    公开(公告)号：US08660563B2

    公开(公告)日：2014-02-25

    申请号：US12316727

    申请日：2008-12-16

    申请人： Joo-Hyun Lee ,  Jin-Ghoo Choi ,  Sang-Boh Yun ,  Jong-Ho Lee ,  Yong-Soo Cho ,  Jae-Kwon Kim ,  Yeong-Jun Kim ,  Kyung-Soo Woo ,  Hyun-Il Yoo

    发明人： Joo-Hyun Lee ,  Jin-Ghoo Choi ,  Sang-Boh Yun ,  Jong-Ho Lee ,  Yong-Soo Cho ,  Jae-Kwon Kim ,  Yeong-Jun Kim ,  Kyung-Soo Woo ,  Hyun-Il Yoo

    IPC分类号： H04W36/04

    CPC分类号： H04W36/30 ,  H04B7/2606 ,  H04W16/26

    摘要： Provided is a handover method of a wireless communication system using a hierarchical cellular scheme. In the method, signal quality of a serving node is measured, so that whether to start scanning for a handover is determined. When the scanning for the handover starts, signal qualities of a serving cell including the serving node and one or more neighbor cells are measured through a first preamble including a first identifier for distinguishing a cell. An intra-cell handover or an inter-cell handover is selected using the signal qualities of the serving cell and the neighbor cells. Therefore, a terminal can easily distinguish between the inter-cell handover and the intra-cell handover, and an overhead during a handover can be reduced because an intra-cell handover procedure is simplified.

    摘要翻译： 提供了使用分层蜂窝方案的无线通信系统的切换方法。 在该方法中，测量服务节点的信号质量，从而确定是否开始扫描切换。 当切换的扫描开始时，包括服务节点和一个或多个相邻小区的服务小区的信号质量通过包括用于区分小区的第一标识符的第一前同步码进行测量。 使用服务小区和相邻小区的信号质量来选择小区内切换或小区间切换。 因此，终端可以容易地区分小区间切换和小区内切换，并且可以减少切换期间的开销，因为小区内切换过程被简化。