| 利用训练序列的OFDM系统定时同步算法 |
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| 引用本文： | 胡畅华,杨明武.利用训练序列的OFDM系统定时同步算法[J].微电子学,2011,41(5). |
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| 作者姓名： | 胡畅华 杨明武 |
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| 作者单位： | 合肥工业大学电子科学与应用物理学院,合肥,230009 |
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| 摘 要： | 在OFDM系统中,定时同步的好坏严重影响到接收端的接收。通过对各种已有定时同步方法的分析,利用CAZAC序列的良好特性,提出一种基于CAZAC训练序列的定时同步方法。改进后的算法能够很好地改善原有经典算法的峰值平台及测量不精确的问题。通过高斯白噪声信道仿真,证明了改进算法在定时同步方面较经典算法有明显提高。
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| 关 键 词： | 正交频分复用 定时估计 CAZAC序列 同步算法 |
Robust Timing Synchronization Algorithm for OFDM System Using Training Sequence |
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| HU Changhua,YANG Mingwu.Robust Timing Synchronization Algorithm for OFDM System Using Training Sequence[J].Microelectronics,2011,41(5). |
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| Authors: | HU Changhua YANG Mingwu |
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| Affiliation: | HU Changhua,YANG Mingwu(School of Electronic Science & Applied Physics,Hefei University of Technology,Hefei 230009,P.R.China) |
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| Abstract: | Timing synchronization plays a crucial part in receivers using OFDM system.Based on the analysis of conventional timing synchronization methods,a new timing synchronization algorithm was proposed by taking advantage of CAZAC sequence,which exhibits better performance,compared with PN sequence.The improved algorithm can solve the plateau problem and improve measurement accuracy.Simulation in AWGN channel demonstrated that the new algorithm had a much better performance,compared with conventional techniques. |
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| Keywords: | OFDM Timing estimation CAZAC sequence Synchronization algorithm |
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