| STC-OFDM系统中一种导频辅助的信道估计方法 |
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| 引用本文： | 单淑伟,宋文涛,罗汉文.STC-OFDM系统中一种导频辅助的信道估计方法[J].上海交通大学学报,2004,38(4):593-596. |
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| 作者姓名： | 单淑伟 宋文涛 罗汉文 |
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| 作者单位： | 上海交通大学,电子工程系,上海,200030 |
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| 基金项目： | 国家自然科学基金资助项目(60272079) |
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| 摘 要： | 提出了一种空时编码OFDM系统中基于导频辅助信道估计的方法．在采用Nt个发送天线的系统中，通过假设信道在连续Nt个OFDM符号持续时间内不变，并选择适当的导频符号值可消除不同发射天线之间的干扰，从而每对收发天线之间的信道可利用单输入单输出OFDM系统的信道估计方法进行独立估计．该方法尤其适用于空时分组编码OFDM系统．
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| 关 键 词： | 空时码 正交频分复用 信道估计 空时分组码 |
| 文章编号： | 1006-2467(2004)04-0593-04 |
| 修稿时间： | 2003年3月25日 |
A Pilot-Symbol-Aided Channel Estimation for Space-Time Coded OFDM Systems |
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| SHAN Shu-wei,SONG Wen-tao,LUO Han-wen.A Pilot-Symbol-Aided Channel Estimation for Space-Time Coded OFDM Systems[J].Journal of Shanghai Jiaotong University,2004,38(4):593-596. |
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| Authors: | SHAN Shu-wei SONG Wen-tao LUO Han-wen |
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| Abstract: | A pilot-symbol-aided channel estimation for space-time coded orthogonal frequency division multiplexing (STC-OFDM) system was proposed. By assuming channel keeps constant during N_t OFDM symbol periods and selecting appropriate pilot symbols for STC-OFDM system using N_t transmit antennas, the interference between different transmit antennas can be eliminated, thus the channel between different pairs of transmit and receive antennas can be estimated independently using channel estimation scheme for single input single output OFDM systems. This scheme is especially applicable to space-time block coded OFDM systems. |
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| Keywords: | space-time code(STC) orthogonal frequency division multiplexing(OFDM) channel estimation space-time block code |
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