| 基于能量收集的OFDM符号精同步算法 |
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| 引用本文： | 罗荣华,刘陈.基于能量收集的OFDM符号精同步算法[J].电子工程师,2005,31(10):24-27. |
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| 作者姓名： | 罗荣华 刘陈 |
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| 作者单位： | 南京邮电学院电子工程系,江苏省南京市210003 |
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| 摘 要： | 针对OFDM(正交频分复用)符号粗同步定时点会随路径能量变动的缺点,利用信道估计得出的信道脉冲响应,提出一种基于能量收集的精同步算法,不需设定判决门限,得到的最终定时点能有效避免ISI(符号间干扰)和ICI(信道间干扰)的引入.多径信道中的仿真验证了该算法的良好性能.
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| 关 键 词： | 正交频分复用 符号同步 精同步 |
| 收稿时间： | 2005-08-05 |
| 修稿时间： | 2005年8月5日 |
Fine Symbol Synchronization Algorithm for OFDM by Energy Collection |
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| Luo Ronghua, Liu Chen.Fine Symbol Synchronization Algorithm for OFDM by Energy Collection[J].Electronic Engineer,2005,31(10):24-27. |
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| Authors: | Luo Ronghua Liu Chen |
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| Abstract: | Start positions estimated by coarse symbol synchronization continually vary with the path energies in OFDM systems. Based on the channel impulse response derived from the channel estimation method, a fine symbol synchronization algorithm by energy collection is proposed in this paper. The proposed technique needs no more the decision threshold, and the final timing position can almost avoid the introduction of the ISI and ICI. Simulations in the multipath channel indicate its better performance. |
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| Keywords: | OFDM symbol synchronization fine synchronization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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