| 基于最小均方插值的码元同步算法研究 |
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| 引用本文： | 辛勤,周良柱,万建伟,李丽.基于最小均方插值的码元同步算法研究[J].国防科技大学学报,2001,23(2):84-89. |
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| 作者姓名： | 辛勤 周良柱 万建伟 李丽 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,
2. 国防科技大学航天与材料工程学院, |
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| 摘 要： | 从软—硬件协同设计的角度出发 ,提出了软件无线电系统中码元同步的一种实现方案。该方案以信号插值为理论基础 ,用软件实现整个码元同步过程。其特点是以估计性能更佳的最小均方滤波器替代传统的多项式插值滤波器 ,并利用软件实现时可以进行大批量数据缓存的优势 ,提出能量检测算法 ,以克服半码元周期传输延迟时出现的高误码率问题
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| 关 键 词： | 软件无线电 码元同步 插值 采样 |
| 文章编号： | 1001-2486(2001)02-0084-06 |
| 收稿时间： | 2000/8/23 0:00:00 |
| 修稿时间： | 2000年8月23日 |
Symbol Synchronization Based on MMSE Interpolation |
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| XIN Qin,ZHOU Liangzhu,WAN Jianwei and LI Li.Symbol Synchronization Based on MMSE Interpolation[J].Journal of National University of Defense Technology,2001,23(2):84-89. |
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| Authors: | XIN Qin ZHOU Liangzhu WAN Jianwei and LI Li |
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| Institution: | 1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;2.College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | This paper presents a symbol synchronization method in software radio system, which should be implemented with software on the view of software/hardware co design theory The new method is also based on signal interpolation theory in which the conventional polynomial filter is replaced by an optimal filter To solve the high BER problem when transfer delay is half the symbol period, an energy check algorithm is further introduced taking the advantage of a large number data nemory |
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| Keywords: | software radio symbol synchronization interpolation sampling |
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