A Frame Synchronization and Symbol Timing Synchronization Algorithm in Burst OFDM Communication Based on IEEE802.11a
A Frame Synchronization and Symbol Timing Synchronization Algorithm in Burst OFDM Communication Based on IEEE802.11a
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DOI：
10.1109/ifita.2009.308
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发表时间：
2009-05
期刊：
影响因子：
--
通讯作者：
Sun Wensheng;Zhang Yuanyuan
中科院分区：
文献类型：
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作者：
Sun Wensheng;Zhang Yuanyuan
研究了一种基于IEEE802.11a的突发OFDM通信中帧和符号定时同步的算法，分析了符号定时同步误差对同步的影响。目前的定时同步算法存在复杂度高、门限随信号能量沿着浮动等问题。因此，本文有必要利用短训练序列的特点，提出一种符号定时同步算法。理论分析和仿真结果表明，该算法能有效地改善系统的误比特率性能。此外，它还具有自适应阈值和低实现复杂度。因此，该算法适用于突发OFDM系统中的快速符号定时同步。
This paper studies an algorithm on frame and symbol timing synchronization in burst OFDM communication based on IEEE802.11a, and analyzes the effect of symbol timing synchronization error. It’s not perfect in many algorithms on timing synchronization at present, such as high complexity, floated threshold along with the signal energy. Therefore, it's necessary to propose an algorithm on symbol timing synchronization using the specialty of Short Training Sequence in this paper. The analysis and the simulation results show that the algorithm proposed in this paper can improve the bit-error-rate performance of the system effectively. Moreover, it also has an adaptive threshold and low implementation complexity. Therefore, the proposed algorithm is suitable for fast symbol timing synchronization in burst OFDM system.