| UWB定时信号的一种快速捕获算法 |
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| 引用本文： | 周先军,胡修林,张蕴玉,刘传清. UWB定时信号的一种快速捕获算法[J]. 通信学报, 2006, 27(5): 126-129 |
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| 作者姓名： | 周先军 胡修林 张蕴玉 刘传清 |
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| 作者单位： | 1. 湖北工业大学,电气与电子工程学院,湖北,武汉,430068
2. 华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 摘 要： | 引入周期锯齿形脉冲作为辅助信号,提出了一种有效的超宽带捕获算法。通过辅助信号与导频信号的相关,获得导频信号的时延估计,然后依据该估计值,延展形成一小探测区间,对此小区间运用比特反转法搜索发射对齐位置,从而实现超宽带信号的快速捕获。对这一方案使用模拟和解析方式与其它搜索算法进行了比较,显示性能有了较大改进。
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| 关 键 词： | 超宽带 快速捕获 辅助信号 比特反转法 |
| 文章编号： | 1000-436X（2006）05-0126-04 |
| 收稿时间： | 2005-05-12 |
| 修稿时间： | 2006-03-20 |
Rapid acquisition scheme for UWB signal in the dense multipath environments |
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| ZHOU Xian-jun,HU Xiu-lin,ZHANG Yun-yu,LIU Chuan-qing. Rapid acquisition scheme for UWB signal in the dense multipath environments[J]. Journal on Communications, 2006, 27(5): 126-129 |
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| Authors: | ZHOU Xian-jun HU Xiu-lin ZHANG Yun-yu LIU Chuan-qing |
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| Abstract: | An efficient acquisition scheme was proposed in which a periodic zigzag pulse could be used to estimate delay phase between the received signal and the transmission one in the ultra-wideband(UWB) communications.According to the correlation result,the alignment position was decided to form a detection range.By the bit reversal search method,the receiver would success acquisition task rapidly.The simulation evaluation shows a good acquisition performance on the receiver presented here under this scheme. |
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| Keywords: | ultra-wideband fast acquisition auxiliary pulse sequence bit reversal search |
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