公开(公告)号：US08160174B2

公开(公告)日：2012-04-17

申请号：US12627506

申请日：2009-11-30

申请人： Young Jo Bang ,  Hyeong Sook Park ,  Jun-Woo Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

发明人： Young Jo Bang ,  Hyeong Sook Park ,  Jun-Woo Kim ,  Kyung Yeol Sohn ,  Chang Wahn Yu ,  Youn Ok Park ,  Jee Hwan Ahn ,  Il Min Kim

IPC分类号： H04B7/02 ,  H04L5/12 ,  H04L27/06

CPC分类号： H04L25/067 ,  H04B7/0413

摘要： Disclosed is a method of detecting signals at a receiver of a communication system with a multiple input multiple output antenna. With the signal detection method, a square of the distance between a received signal vector and a channel status-considered transmission symbol vector is calculated first, and the square of the distance is then classified into first and second components. The first component is minimized to calculate a plurality of first soft symbol estimates. A solution set of the first component is calculated on the basis of the plurality of first soft symbol estimates. The second component is minimized to calculate a plurality of second soft symbol estimates. A solution set of the second component is calculated on the basis of the plurality of second soft symbol estimates. A final solution set is calculated by doing the sum of the first component solution set and the second component solution.

摘要翻译： 公开了一种在具有多输入多输出天线的通信系统的接收机处检测信号的方法。 利用信号检测方法，首先计算接收信号矢量和通道状态考虑的发送符号向量之间的距离的平方，然后将距离的平方分成第一和第二分量。 将第一分量最小化以计算多个第一软符号估计。 基于多个第一软符号估计来计算第一分量的解集合。 将第二分量最小化以计算多个第二软符号估计。 基于多个第二软符号估计来计算第二分量的解集合。 通过执行第一分量解集合和第二分量解的和来计算最终解集。

公开(公告)号：US20110286500A1

公开(公告)日：2011-11-24

申请号：US13113549

申请日：2011-05-23

申请人： Jun-Woo KIM ,  Young Jo Bang ,  Byung-Han Ryu ,  Hyeong Jun Park ,  Youn Ok Park ,  Jee Hwan Ahn

发明人： Jun-Woo KIM ,  Young Jo Bang ,  Byung-Han Ryu ,  Hyeong Jun Park ,  Youn Ok Park ,  Jee Hwan Ahn

IPC分类号： H04B3/36

CPC分类号： H04W56/0085 ,  H04B7/15 ,  H04B7/155 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2671 ,  H04L27/2676

摘要： A synchronization method of a radio repeater includes: using a first signal, a second signal, and a received signal including the first signal and the second signal to calculate correlation values of the first signal and the second signal; using the first signal correlation value, the second signal correlation value, and the power value of the received signal to output normalized correlation values; subtracting the normalized correlation value of the first signal and the normalized correlation value of the second signal; and detecting a start interval of the second signal based on the subtraction result and outputting a synchronization signal to synchronize the radio repeater.

摘要翻译： 无线电中继器的同步方法包括：使用第一信号，第二信号和包括第一信号和第二信号的接收信号，以计算第一信号和第二信号的相关值; 使用第一信号相关值，第二信号相关值和接收信号的功率值来输出归一化相关值; 减去第一信号的归一化相关值和第二信号的归一化相关值; 以及基于所述减法结果检测所述第二信号的开始间隔，并输出同步信号以同步所述无线电中继器。

公开(公告)号：US20110183689A1

公开(公告)日：2011-07-28

申请号：US13122247

申请日：2009-10-01

申请人： Kanghee Kim ,  Geon Min Yeo ,  Byung-Han Ryu ,  Jee Hwan Ahn ,  Jae Kyun Kwon ,  Youngsuk Suh ,  Kyungsu Yun ,  Kang-Il Ahn

发明人： Kanghee Kim ,  Geon Min Yeo ,  Byung-Han Ryu ,  Jee Hwan Ahn ,  Jae Kyun Kwon ,  Youngsuk Suh ,  Kyungsu Yun ,  Kang-Il Ahn

IPC分类号： H04W4/02

CPC分类号： G01S5/0215 ,  G01S5/0018 ,  G01S5/14

摘要： Provided is a wireless position determining method and apparatus. The wireless position determining includes: a measuring unit that measures a propagation delay tap of a signal received from a transmitting end through a channel; and extractor that extracts delay spread information having various forms based on the propagation delay tap; and an obtaining and calculating unit that obtains a distance between transmission and reception ends based on the delay spread information and calculates a position of a receiving end based on the obtained distance between the transmission and reception ends.

摘要翻译： 提供一种无线位置确定方法和装置。 无线位置确定包括：测量单元，其测量通过信道从发送端接收的信号的传播延迟抽头; 以及提取器，其基于所述传播延迟抽头来提取具有各种形式的延迟扩展信息; 以及获取和计算单元，其基于延迟扩展信息获得发送和接收结束之间的距离，并且基于所获得的发送和接收端之间的距离来计算接收端的位置。

公开(公告)号：US20100316145A1

公开(公告)日：2010-12-16

申请号：US12677412

申请日：2008-09-10

申请人： Choong il Yeh ,  Dong Seung Kwon ,  Jee Hwan Ahn

发明人： Choong il Yeh ,  Dong Seung Kwon ,  Jee Hwan Ahn

IPC分类号： H04L27/28 ,  H04L27/00

CPC分类号： H04L25/0224 ,  H04B7/0452 ,  H04B7/0626 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0204 ,  H04L43/50

摘要： Disclosed is a method for channel estimation and feedback in a wireless communication system that estimates a channel for each transmission antenna using an orthogonal frequency division multiplexing (OFDM) impulse signal. A method for channel estimation in a wireless communication system includes causing a base station to generate a training signal with a specific waveform for each transmission antenna and to transmit the generated training signal to terminals; causing the terminals to acquire a downlink channel impulse response for each transmission antenna of the base station using the training signal transmitted from the base station; causing the terminals to acquire a downlink channel characteristic for each transmission antenna of the base station using the acquired channel impulse response; causing the terminal to feed back the acquired downlink channel characteristic information to the base station; and causing the base station to perform fast Fourier transform (FFT) on the downlink channel information transmitted from the terminals to indirectly acquire full channel status information (CSI).

摘要翻译： 公开了一种用于使用正交频分复用（OFDM）脉冲信号估计每个发射天线的信道的无线通信系统中的信道估计和反馈的方法。 一种用于在无线通信系统中进行信道估计的方法，包括使得基站为每个发射天线产生具有特定波形的训练信号，并将生成的训练信号发射到终端; 使得终端使用从基站发送的训练信号来获取基站的每个发射天线的下行链路信道脉冲响应; 使得所述终端使用所获取的信道脉冲响应来获取所述基站的每个发送天线的下行链路信道特性; 使所述终端将所获取的下行链路信道特性信息反馈给所述基站; 并且使得基站对从终端发送的下行链路信道信息执行快速傅里叶变换（FFT）以间接获取全信道状态信息（CSI）。

公开(公告)号：US20070281665A1

公开(公告)日：2007-12-06

申请号：US10582440

申请日：2004-12-08

申请人： Seok-Heon Cho ,  Ae-Soon Park ,  Chul-Sik Yoon ,  Kyung-Soo Kim ,  Jee Hwan Ahn

发明人： Seok-Heon Cho ,  Ae-Soon Park ,  Chul-Sik Yoon ,  Kyung-Soo Kim ,  Jee Hwan Ahn

IPC分类号： H04M1/66

CPC分类号： H04L63/062 ,  H04W4/06 ,  H04W12/04

摘要： Disclosed are a method for requesting, generating and distributing a service-specific traffic encryption key in a wireless portable Internet system, an apparatus for the same, and a protocol configuration method for the same. In the present invention, a subscriber station sends a Key Request message for requesting a service-specific traffic encryption key to the base station using a PKM-REQ MAC message, and a base station analyzes the Key Request message to generate the requested service-specific traffic encryption key. Subsequently, the base station sends a Key Reply message, including the generated service-specific traffic encryption key, to the subscriber station using a PKM-RSP MAC message. If the base station fails to generate the key, the base station sends a Key Reject message, including a reason for the failure, to the subscriber station.

摘要翻译： 公开了一种用于请求，生成和分发无线便携式因特网系统中的服务专用业务加密密钥的方法，用于其的设备及其协议配置方法。 在本发明中，用户站使用PKM-REQ MAC消息向基站发送用于请求业务专用业务加密密钥的密钥请求消息，并且基站分析密钥请求消息以生成所请求的服务特定 流量加密密钥。 随后，基站使用PKM-RSP MAC消息向订户站发送包括生成的服务特定业务加密密钥的密钥应答消息。 如果基站无法生成密钥，则基站向用户台发送包括故障原因的密钥拒绝消息。