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106 条记录 (耗时 0.039 秒)

    System for soft handover in MIMO OFDMA mobile communication system and method thereof
    7.
    发明申请
    System for soft handover in MIMO OFDMA mobile communication system and method thereof 审中-公开
    MIMO OFDMA移动通信系统中的软切换系统及其方法

    公开(公告)号：US20050281228A1

    公开(公告)日：2005-12-22

    申请号：US11158861

    申请日：2005-06-22

    申请人： Jeong-Tae Oh ,  Won-II Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Pan-Yuh Joo ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Chan-Byoung Chae

    发明人： Jeong-Tae Oh ,  Won-II Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Pan-Yuh Joo ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Chan-Byoung Chae

    IPC分类号： H04B7/26 ,  H04B7/04 ,  H04B14/00 ,  H04L27/26 ,  H04W36/18 ,  H04Q7/20

    CPC分类号： H04W36/18

    摘要： Disclosed is a method for performing a soft handover in a Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiple Access (OFDMA) mobile communication system including a mobile station (MS), a serving base station (BS) and a plurality of neighbor BSs, each neighbor BS being different from the serving BS the serving BS providing a service to the MS. According to the method, the MS requests a soft handover to the serving BS when the serving BS detects that the MS must be handed over to one of the neighbor BSs, the serving BS notifies the neighbor BSs of the soft handover of the MS in response to the request for the soft handover, transmits signals to the MS using a predetermined coding scheme and a predetermined frequency region allocation scheme, and the neighbor BSs transmit signals to the MS using the predetermined coding scheme and the predetermined frequency region allocation scheme.

    摘要翻译： 公开了一种在多输入多输出（MIMO）正交频分多址（MIMO）正交频分多址（OFDMA）移动通信系统中执行软切换的方法，包括移动台（MS），服务基站（BS）和多个相邻BS ，每个邻居BS不同于服务BS，服务BS向MS提供服务。 根据该方法，当服务BS检测到MS必须切换到相邻BS之一时，MS向服务BS请求软切换，服务BS响应该MS向MS通知软切换 对于软切换的请求，使用预定的编码方案和预定的频率区域分配方案向MS发送信号，并且相邻BS使用预定的编码方案和预定的频率区域分配方案向MS发送信号。

    Apparatus and method for space-time block coding
    10.
    发明申请
    Apparatus and method for space-time block coding 审中-公开
    用于空时块编码的装置和方法

    公开(公告)号：US20060039499A1

    公开(公告)日：2006-02-23

    申请号：US11204598

    申请日：2005-08-16

    申请人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

    发明人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Dong-Seek Park ,  Jae-Yoel Kim ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

    IPC分类号： H04B7/02 ,  H04L1/02

    CPC分类号： H04L1/0625 ,  H04L1/0668 ,  H04L1/0675

    摘要： A space-time block coding apparatus and method for transmitting an input symbol sequence through a plurality of Tx antennas using a channel information from the receiver in order to improve the performance of a space-time block coding (STFBC). A pre-coder pre-codes an input symbol sequence by multiplying the input symbol sequence by ejθ, θ being a phase rotation angle, the pre-coded symbol sequence being reconstructed to have real and imaginary parts. A grouping mapper forms a grouping pattern based on feedback channel information received from a receiver, and generates a grouping symbol sequence by multiplying the grouping pattern by the pre-coded symbol sequence. A mapper generates symbol vectors by recombining the real and imaginary parts of the grouping symbol sequence in an interleaving scheme. A plurality of Alamouti coders encodes the symbol vectors in an Alamouti scheme and transmits the encoded symbol vectors through corresponding transmit antennas.

    摘要翻译： 一种时空块编码装置和方法，用于使用来自接收机的信道信息通过多个Tx天线发送输入符号序列，以提高空时块编码（STFBC）的性能。 预编码器通过将输入符号序列乘以e为相位旋转角来预编码输入符号序列，所述预编码符号序列被重构为具有实部和虚部。 分组映射器基于从接收器接收的反馈信道信息形成分组模式，并通过将分组模式乘以预编码符号序列来生成分组符号序列。 映射器通过在交织方案中重组分组符号序列的实部和虚部来生成符号向量。 多个Alamouti编码器以Alamouti方案对符号向量进行编码，并通过对应的发送天线发送编码的符号向量。