| 突发分组OFDM系统中载波同步算法的改进 |
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| 引用本文： | 丁晨. 突发分组OFDM系统中载波同步算法的改进[J]. 计算机系统应用, 2015, 24(12): 148-151 |
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| 作者姓名： | 丁晨 |
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| 作者单位： | 武警工程大学信息工程系, 西安 710086 |
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| 摘 要： | 针对采用OFDM技术的通信系统对载波同步敏感;普通算法不适合突发分组传输模式下数据传输的问题,设计基于训练序列的载波同步改进算法和度量函数.该算法利用训练序列在时域的重复性,在时域完成载波同步.仿真结果表明,该改进算法在信噪比较高时,可保持10-6数量级的均方误差,且无需频域反馈,同步时间短,适合突发分组传输模式的特点.
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| 关 键 词： | orthogonal frequency division multiplexing(OFDM) 载波同步 突发分组传输 训练序列 |
| 收稿时间： | 2015-03-24 |
| 修稿时间： | 2015-05-04 |
Improved Carrier Synchronization Method in OFDM Systems Based on Training Sequence |
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| DING Chen. Improved Carrier Synchronization Method in OFDM Systems Based on Training Sequence[J]. Computer Systems& Applications, 2015, 24(12): 148-151 |
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| Authors: | DING Chen |
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| Affiliation: | School of the Engineering University of CAPF, Xi'An 710086, China |
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| Abstract: | Aiming at the carrier synchronization sensitiveness in OFDM (orthogonal frequency division multiplexing) systems and the common synchronization method's being not suitable for data transmission in burst packet transmission mode, an improved method and a new measuring function are given. The method uses the repeatability of the training sequence to achieve carrier synchronization in time-domain. The simulation results show that, the improved method with high SNR can keep the MSE (mean square error) with the order of magnitude of 10-6, and suits for?burst packet transmission mode without the feedback of frequency domain. |
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| Keywords: | OFDM carrier synchronization burst packet transmission training sequence |
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