利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

84 条记录 (耗时 0.032 秒)

    Method and apparatus for generating signal having converted sampling rate in communication system
    1.
    发明授权
    Method and apparatus for generating signal having converted sampling rate in communication system 有权
    在通信系统中产生具有转换采样率的信号的方法和装置

    公开(公告)号：US09240771B2

    公开(公告)日：2016-01-19

    申请号：US13368656

    申请日：2012-02-08

    申请人： Joo-Hyun Lee ,  Sung-Kwon Jo ,  Ha-Young Yang

    发明人： Joo-Hyun Lee ,  Sung-Kwon Jo ,  Ha-Young Yang

    IPC分类号： H03H17/06 ,  H04B1/00

    CPC分类号： H03H17/0685 ,  H03H17/0628 ,  H04B1/0017 ,  H04B1/0021

    摘要： A method of generating a signal having a converted sampling rate in a communication system is provided. The method includes selecting effective input samples among S number of input samples included in an input stream corresponding to an input sampling rate, generating a filter coefficient set including filter coefficients having a length of a second tap, the filter coefficients having the length of the second tap being generated by dividing a filter coefficient having a length of a first tap configuring a low-pass filter into the filter coefficients having the length of the second tap corresponding to a number of selected effective input samples, selecting filter coefficients corresponding to each of the effective input samples among the filter coefficients included in the filter coefficient set, and outputting output samples having an output sampling rate which is converted from the input sampling rate.

    摘要翻译： 提供一种在通信系统中产生具有转换采样率的信号的方法。 该方法包括：选择包含在与输入采样率相对应的输入流中的S个输入样本之间的有效输入样本，生成包括具有第二抽头长度的滤波器系数的滤波器系数组，滤波器系数具有第二 通过将具有构成低通滤波器的第一抽头的长度的滤波器系数除以对应于所选择的有效输入样本的数量的具有第二抽头的长度的滤波器系数来生成抽头，选择与每个 包括在滤波器系数组中的滤波器系数中的有效输入样本，并且输出具有从输入采样率转换的输出采样率的输出采样。

    Method and apparatus for receiving minimum mean-squared-error in single-carrier frequency division multiple access system
    2.
    发明授权
    Method and apparatus for receiving minimum mean-squared-error in single-carrier frequency division multiple access system 有权
    在单载波频分多址系统中接收最小均方误差的方法和装置

    公开(公告)号：US08416674B2

    公开(公告)日：2013-04-09

    申请号：US12967417

    申请日：2010-12-14

    申请人： Joo-Hyun Lee ,  Sung-Kwon Jo ,  Ha-Young Yang ,  Myung-Kwang Byun

    发明人： Joo-Hyun Lee ,  Sung-Kwon Jo ,  Ha-Young Yang ,  Myung-Kwang Byun

    IPC分类号： H04J9/00 ,  H04J11/00

    CPC分类号： H04B7/0854 ,  H04L25/022 ,  H04L25/03159 ,  H04L25/03292 ,  H04L27/2636 ,  H04L27/2649 ,  H04L2025/03414

    摘要： A method and an apparatus for receiving a Minimum Mean-Squared-Error (MMSE) in a Single-Carrier Frequency Division Multiple Access (SC-FDMA) system is provided. The method includes, transforming a signal in a time domain received through an antenna into a signal in a frequency domain, and discriminating between bands respectively allocated to terminals in a frequency domain, estimating a channel and computing a weight value from the signal transformed into the frequency domain, and detecting an MMSE, computing a time-domain bias from the weight value and a channel estimation value of the signal transformed into the frequency domain, normalizing the detected MMSE by using the computed time-domain bias, and transforming the normalized signal into a normalized signal in a time domain, decoding the normalized signal transformed to the time domain, and transmitting the decoded normalized signal transformed into the time domain to each of the terminals.

    摘要翻译： 提供了一种用于在单载波频分多址（SC-FDMA）系统中接收最小均方误差（MMSE）的方法和装置。 该方法包括：将通过天线接收的时域中的信号变换为频域中的信号，以及区分分配给频域中的终端的频带，估计信道，并从转换为 频域，并且检测MMSE，从加权值计算时域偏差和变换到频域的信号的信道估计值，通过使用计算出的时域偏差对检测到的MMSE进行归一化，并且将归一化信号 在时域中变换为归一化信号，对被变换为时域的归一化信号进行解码，并将转换成时域的解码归一化信号发送到各终端。

    Method and system for transmitting/receiving data in a communication system
    5.
    发明授权
    Method and system for transmitting/receiving data in a communication system 有权
    用于在通信系统中发送/接收数据的方法和系统

    公开(公告)号：US08559364B2

    公开(公告)日：2013-10-15

    申请号：US11649733

    申请日：2007-01-04

    申请人： Sung-Soo Hwang ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Ki-Young Han ,  Keun-Chul Hwang ,  Joo-Hyun Lee ,  June Moon

    发明人： Sung-Soo Hwang ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Ki-Young Han ,  Keun-Chul Hwang ,  Joo-Hyun Lee ,  June Moon

    IPC分类号： H04W80/04

    CPC分类号： H04W72/046 ,  H04W72/042 ,  H04W72/048 ,  H04W72/06 ,  H04W72/082 ,  H04W72/1231 ,  H04W88/08

    摘要： A method is provided for transmitting/receiving data in a communication system. The method includes determining, when data to be transmitted to at least one Mobile Station (MS) is generated, a region where an MS that receive the generated data among the at least one MS is located, allocating resources of a data transmission region divided into a first region and a second region to the MS that receive the generated data according to the determination result, including the generated data in a region where the resource is allocated, and including, in a MAP message region, resource allocation information of the region where the data is included and information on an MS that receive the data included in the resource-allocated region, and transmitting, to the MS, a frame including the region in which the generated data is included, and the MAP message region.

    摘要翻译： 提供了一种用于在通信系统中发送/接收数据的方法。 该方法包括：当要发送到至少一个移动站（MS）的数据被生成时，确定在至少一个MS之间接收生成的数据的MS所在的区域，分配数据传输区域的资源，被划分为 所述MS的第一区域和第二区域根据所述确定结果接收所生成的数据，所述确定结果包括在所述资源被分配的区域中生成的数据，并且在MAP消息区域中包括所述区域的资源分配信息 包括数据和接收包含在资源分配区域中的数据的MS的信息，以及向MS发送包括生成数据的区域的帧和MAP消息区域。

    Apparatus and method for detecting a signal in a communication system using multiple antennas
    7.
    发明授权
    Apparatus and method for detecting a signal in a communication system using multiple antennas 有权
    用于在使用多个天线的通信系统中检测信号的装置和方法

    公开(公告)号：US08005170B2

    公开(公告)日：2011-08-23

    申请号：US11871598

    申请日：2007-10-12

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

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

    IPC分类号： H03D1/00

    CPC分类号： H04L1/0045 ,  H04L1/0656

    摘要： A method and apparatus for detecting a signal in a communication system using at least two transmit antennas are provided. The signal detection method and apparatus includes selecting a symbol corresponding to a lowest branch metric from among symbols, the number of which corresponds to a modulation scheme, determining a candidate symbol by extending a process of selecting a symbol corresponding to a lowest branch metric from among the selected symbols, to a number which is less by one than the number of the transmit antennas, setting an accumulated branch metric of the candidate symbol as a threshold, removing a symbol having an accumulated branch metric higher than the threshold, and selecting, as a last received symbol, a symbol corresponding to a path having the lowest accumulated branch metric among paths selected without being removed until a last stage.

    摘要翻译： 提供了一种使用至少两个发射天线来检测通信系统中的信号的方法和装置。 信号检测方法和装置包括从符号中选择与最低分支度量相对应的符号，其数量对应于调制方案，通过扩展选择对应于最低分支度量的符号的处理来确定候选符号， 将所选择的符号设置为比发送天线的数量小一个的数字，将候选符号的累积分支度量设置为阈值，去除具有高于阈值的累积分支度量的符号，并且选择为 最后接收的符号，对应于在所选择的路径中具有最低累积分支度量的路径的符号，而不被去除直到最后阶段。

    Receiving apparatus and method for single carrier frequency division access system
    8.
    发明授权
    Receiving apparatus and method for single carrier frequency division access system 有权
    单载波分频接入系统接收装置及方法

    公开(公告)号：US07944810B2

    公开(公告)日：2011-05-17

    申请号：US12336936

    申请日：2008-12-17

    申请人： Joo-Hyun Lee ,  Soong-Yoon Choi ,  Sang-Boh Yun ,  Sung-Soo Hwang

    发明人： Joo-Hyun Lee ,  Soong-Yoon Choi ,  Sang-Boh Yun ,  Sung-Soo Hwang

    IPC分类号： H04J11/00

    CPC分类号： H04L25/03 ,  H04L25/0244 ,  H04L2025/03414 ,  H04L2025/03426

    摘要： A receiver and a receiving method for a Single Carrier Frequency Division Multiple Access (SC-FDMA) system are provided. The receiver includes a matrix selector for selecting a constant channel matrix according to a Multiple-Input Multiple-Output (MIMO) reception scheme, a channel equalizer for equalizing a multi-path channel to a specific path channel in a frequency domain by using the constant channel matrix, and a MIMO detector for detecting a Euclidean distance of transmittable symbols from a time-domain Transmit (Tx) signal by using the channel equalized in the frequency domain and then for selecting a symbol having a minimum distance.

    摘要翻译： 提供了用于单载波频分多址（SC-FDMA）系统的接收机和接收方法。 该接收机包括一个矩阵选择器，用于根据多输入多输出（MIMO）接收方案选择一个恒定信道矩阵，一个信道均衡器，用于通过使用常数来将多径信道均衡到一个特定路径信道 信道矩阵，以及MIMO检测器，用于通过使用在频域中均衡的信道，然后选择具有最小距离的符号来检测来自时域发送（Tx）信号的可发送符号的欧氏距离。

    Preamble design method for reducing overhead during handover in hierarchical cellular system
    10.
    发明申请
    Preamble design method for reducing overhead during handover in hierarchical cellular system 有权
    用于在分级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：US20090156214A1

    公开(公告)日：2009-06-18

    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： H04W36/00

    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。