| 一种改进的符号定时恢复算法研究与性能分析 |
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| 引用本文： | 邹晓清,吴利民,刘志,马军.一种改进的符号定时恢复算法研究与性能分析[J].电子质量,2007(9):35-37. |
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| 作者姓名： | 邹晓清 吴利民 刘志 马军 |
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| 作者单位： | 空军雷达学院研究生管理大队,湖北,武汉,430019;空军雷达学院信息与指挥自动化系,湖北,武汉,430019 |
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| 摘 要： | Gardner算法是数字解调系统中常用的一种提取定时误差的算法,但Gardner算法的一个主要缺点是对限带信号会产生明显的定时抖动。本文针对Garnder算法的不足,对一种改进的算法进行研究,并以M-PSK信号为例,对整个定时恢复环路进行仿真。仿真结果显示当输入信号为M-PSK信号时,定时误差抖动明显降低,数字接收系统的性能得以明显改善。
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| 关 键 词： | 符号同步 改进的Gardner算法 定时误差 |
| 文章编号： | 1003-0107（2007）09-0035-03 |
Study of A Modified Algorithm For Symbol Timing Recovery |
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| Zou Xiao-qing,Wu Li-min,Liu Zhi,Ma Jun.Study of A Modified Algorithm For Symbol Timing Recovery[J].Electronics Quality,2007(9):35-37. |
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| Authors: | Zou Xiao-qing Wu Li-min Liu Zhi Ma Jun |
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| Abstract: | Gardner algorithm has been widely used in software radio demodulation system,but one drawback of the Gardner algorithm is that it has significant timing-jitter for band-limited signals ,based on which,we analysis a modified algorithm .Simulation was done in terms of the entire timing recovery loop and taking examples of M-PSK signals. Simulation results show that the modification leads to a better performance of the software radio receiver while the input M-PSK signal is band-limited. |
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| Keywords: | Symbol synchronization Modified Gardner algorithm Timing error jitte |
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