| 非相干直接序列扩频信号的定时估计 |
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| 引用本文： | 张谦,侯鹰,丁晓峰.非相干直接序列扩频信号的定时估计[J].无线电工程,2006,36(9):30-31,41. |
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| 作者姓名： | 张谦 侯鹰 丁晓峰 |
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| 作者单位： | 北京跟踪与通信技术研究所,北京,100094 |
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| 摘 要： | 首先分析了定时恢复在非相干直接序列扩频中的必要性,然后利用滑动平均器将解扩后的非相干扩频信号等效为高倍采样的非扩频信号,最后选择了一种适合于非扩频信号定时估计的算法,并将该算法用于非相干扩频信号的定时估计。仿真表明,该算法性能满足非相干直接序列扩频信号对定时估计误差的要求。
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| 关 键 词： | 非相干直接序列扩频 定时恢复 滑动平均器 |
| 收稿时间： | 2006-01-19 |
| 修稿时间： | 2006-01-19 |
Timing Recovery of Non-coherent DSSS Signal |
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| ZHANG Qian,HOU Ying,DING Xiao-feng.Timing Recovery of Non-coherent DSSS Signal[J].Radio Engineering of China,2006,36(9):30-31,41. |
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| Authors: | ZHANG Qian HOU Ying DING Xiao-feng |
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| Institution: | Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China |
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| Abstract: | The necessity of timing recovery for Non- coherent DSSS signal is analyzed at first, then the de-correlated signal is converted into high rate sampled non-DSSS signal by applying moving average, and at last, a proper algorithm that is normally used for the timing recovery of non-DSSS signal is used to estimate the timing error of the non-coherent DSSS signal. Simulation results show that the proposed method and the selected algorithm could meet the system performance requirement. |
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| Keywords: | non-coherent DSSS timing recovery moving average filter |
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