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    • 2. 发明授权
    • Orthogonal frequency division multiplexing communication system, multi-hop system, relay station, and spatially layered transmission mode
    • 正交频分复用通信系统,多跳系统,中继站,空间分层传输模式
    • US08189696B2
    • 2012-05-29
    • US12080650
    • 2008-04-03
    • Jong-Hyeuk LeeSang-Boh YunJoo-Hyun LeeDae-Sik HongHyung-Joon Song
    • Jong-Hyeuk LeeSang-Boh YunJoo-Hyun LeeDae-Sik HongHyung-Joon Song
    • H04L27/28
    • H04L5/0007H04B7/155H04L25/03057H04L25/03178H04L2001/0097
    • An apparatus and method for data transmission in an Orthogonal Frequency Division Multiplexing (OFDM) communication system are provided. An OFDM system includes a reference Relay Station (RS) and a cooperative relay station respectively for performing an Spatially Layered transmission Mode (SLM) process by modulating a phase and magnitude of a signal by using a predetermined modulation order suitable for the reference relay station to obtain a spatially-layered signal and for delivering the spatially-layered signal to a target Mobile Station (MS); a Base Station (BS) for selecting the reference relay station and the cooperative relay station among a plurality of relay stations; and an mobile station for detecting data through Maximum Likelihood (ML) detection in which a signal having the largest ML is detected by comparing the received spatially-layered signal with a signal which is converted through the SLM upon receiving the spatially-layered signal from the reference relay station and the cooperative relay station.
    • 提供了一种用于正交频分复用(OFDM)通信系统中的数据传输的装置和方法。 OFDM系统包括参考中继站(RS)和协作中继站,分别用于通过使用适合于参考中继站的预定调制顺序来调制信号的相位和幅度来执行空间分层传输模式(SLM)处理 获得空间分层信号并将空间分层信号传送到目标移动站(MS); 用于在多个中继站中选择参考中继站和协作中继站的基站(BS); 以及用于通过最大似然(ML)检测来检测数据的移动站,其中通过将接收到的空间分层信号与从所述SLM接收到的空间分层信号中经过SLM转换的信号进行比较来检测具有最大ML的信号 参考中继站和合作中继站。
    • 10. 发明申请
    • System and method for channel estimation in an OFDM mobile communication system
    • OFDM移动通信系统中信道估计的系统和方法
    • US20050007983A1
    • 2005-01-13
    • US10840584
    • 2004-05-06
    • Jong-Hyeuk LeeYung-Soo KimGi-Hong ImHui-Chul WonCheol-Jin Park
    • Jong-Hyeuk LeeYung-Soo KimGi-Hong ImHui-Chul WonCheol-Jin Park
    • H04J11/00H04B7/06H04L1/06H04L25/02H04L27/26H04Q7/00
    • H04L27/2602H04B7/0669H04L1/0618H04L25/0204H04L25/022
    • A mobile communication system, a transmitter includes a first transmission antenna and a second transmission antenna, and the first and second transmission antennas transmit signals through at least one odd carrier and at least one even carrier. The transmitter determines a first symbol and a second symbol to be used for initial channel estimation of a receiver, encodes the first symbol and the second symbol by a preset transmit diversity scheme for a preset time, and transmits the encoded first and second symbols to the receiver through odd carriers and even carriers of the first transmission antenna and the second transmission antenna. The receiver receives a signal for the preset period, estimates channel frequency responses of odd carriers of the first transmission antenna and channel frequency responses of even carriers of the second transmission antenna, and estimates channel frequency responses of even carriers of the first transmission antenna and channel frequency responses of odd carriers of the second transmission antenna by using the estimated channel frequency responses.
    • 移动通信系统,发射机包括第一发射天线和第二发射天线,第一和第二发射天线通过至少一个奇数载波和至少一个偶数载波发射信号。 发射机确定要用于接收机的初始信道估计的第一符号和第二符号,通过预设的发射分集方案对第一符号和第二符号进行预设时间编码,并将编码的第一和第二符号发送到 接收机通过第一发射天线和第二发射天线的奇数载波和偶数载波。 接收机接收预设周期的信号,估计第一发射天线的奇数载波的信道频率响应和第二发射天线的偶数载波的信道频率响应,并估计第一发射天线和信道的偶数载波的信道频率响应 通过使用估计的信道频率响应对第二发射天线的奇数载波的频率响应。