| 一种基于能量比例的IR-UWB同步算法 |
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| 引用本文： | 王静,曾晓洋.一种基于能量比例的IR-UWB同步算法[J].复旦学报(自然科学版),2008,47(1):101-106. |
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| 作者姓名： | 王静 曾晓洋 |
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| 作者单位： | 复旦大学,专用集成电路与系统国家重点实验室,上海,201203 |
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| 基金项目： | 上海市科委登山行动计划——集成电路创新基金资助项目(067062016) |
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| 摘 要： | 提出了一种新的基于能量比例的IR-UWB同步算法.该算法将接收信号与其自身延迟相乘并积分,将符号长度积分值序列分解为两部分,由这两部分的比值即可快速得到帧层面同步的可靠估计值.为估算此比值提出了两种方案,分别基于非数据辅助和数据辅助,并为数据辅助设计了训练序列.通过仿真比较了两种方案的性能,指出数据辅助方案性能较好.与传统算法相比,新算法不需要进行滑动相关操作,大大降低了复杂度,缩短了同步时间.
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| 关 键 词： | 通信技术 超宽带 同步 能量比例 非相干 |
| 文章编号： | 0427-7104（2008）01-0101-06 |
| 收稿时间： | 2007-05-14 |
| 修稿时间： | 2007年5月14日 |
An IR-UWB Synchronization Method Based on Energy-Proportion |
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| WANG Jing,ZENG Xiao-yang.An IR-UWB Synchronization Method Based on Energy-Proportion[J].Journal of Fudan University(Natural Science),2008,47(1):101-106. |
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| Authors: | WANG Jing ZENG Xiao-yang |
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| Abstract: | A novel synchronization method for IR-UWB systems is proposed.Integrate-anddump operations at the symbol rate are carried out over the product of the received signal and the Ts-delayed copy of itself,and the proportion of the two parts constituting these symbol-rate samples,termed "energy-proportion",make it possible to achieve frame-level synchronization in a fast and reliable way.Two schemes are developed to estimate the energy-proportion based on nondat-avaided(NDA) and data-aided(DA) modes respectively,while a training pattern is designed for the DA mode.Simulation results indicate that the DA scheme shows better mean square error and bit-error rate.This new synchronization method does not involve slide-correlating operation of the most of existing alternatives,thus considerably reduces the synchronization time and the complexity. |
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| Keywords: | communication technology UWB synchronization energy-proportion noncoherent |
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