| 一种基于代价函数的正交频分复用中符号同步与频偏估计算法 |
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| 引用本文： | 欧阳喜,郭留成,葛临东. 一种基于代价函数的正交频分复用中符号同步与频偏估计算法[J]. 电讯技术, 2002, 42(3): 22-26 |
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| 作者姓名： | 欧阳喜 郭留成 葛临东 |
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| 作者单位： | 解放军信息工程大学,河南,郑州,450002 |
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| 摘 要： | 本文利用正交频分复用（OFDM）帧结构的特点，引入代价函数，推导出了一种符号同步算法和频偏估计算法，并从理论上分析了在存在频偏的情况下，符号同步可以独立于频偏估计。计算机仿真表明，该算法具有较好的同步和频偏估计性能。
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| 关 键 词： | 代价函数 正交频分复用 符号同步 频偏估计算法 OFDM 多载波调制 |
| 文章编号： | 1001-893X(2002)03-0022-05 |
| 修稿时间： | 2002-01-23 |
An Algorithm of Symbol Synchronization and Frequency Offset Estimation for OFDM Based on the Cost Function |
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| OU Yang-xi,GUO Liu-cheng,GE Lin-dong. An Algorithm of Symbol Synchronization and Frequency Offset Estimation for OFDM Based on the Cost Function[J]. Telecommunication Engineering, 2002, 42(3): 22-26 |
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| Authors: | OU Yang-xi GUO Liu-cheng GE Lin-dong |
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| Abstract: | In this paper an algorithm of symbol synchronization and frequency offset estimation for OFDM based on the cost function is proposed. The algorithm is derived from a cost function, which is based on the character of the OFDM signal frame structure. Theoretical analysis shows that the symbol synchronization is independent from the frequency offset estimation when frequency offset exists. The simulation results indicate that the proposed algorithm has good performance. |
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| Keywords: | Orthogonal frequency division multiplexing (OFDM) Symbol synchronization Frequency offset Estimator Cost function Algorithm |
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