| 基于PR-QMF的扩频序列 |
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| 引用本文： | 何昕,曾兴雯. 基于PR-QMF的扩频序列[J]. 电子科技, 2007, 0(4): 32-34 |
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| 作者姓名： | 何昕 曾兴雯 |
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| 作者单位： | 西安电子科技大学,综合业务网与关键技术国家重点实验室,陕西,西安,710071;西安电子科技大学,综合业务网与关键技术国家重点实验室,陕西,西安,710071 |
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| 摘 要： | 利用小波或者小波包的变换与反变换可以构造出具有完全重构性质的滤波器组,提出一种基于完全重构正交镜像滤波器组的新型扩频序列,它不同于传统的扩频序列的二值特性,是一种多值序列。分析与仿真结果表明,小波函数与尺度函数的正交性以及滤波器组的完全重构特性使的这种新型扩频序列具有更好的抗干扰能力和组网能力。
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| 关 键 词： | 完全重构正交镜像滤波器组 直接序列扩频 扩频序列 |
| 收稿时间： | 2006-06-09 |
| 修稿时间： | 2006-06-09 |
PR- QMF Based Spreading Codes |
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| He Xin,Zeng Xingwen. PR- QMF Based Spreading Codes[J]. Electronic Science and Technology, 2007, 0(4): 32-34 |
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| Authors: | He Xin Zeng Xingwen |
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| Abstract: | Structure filter banks that reconstruct signals perfectly can be obtained by using wavelet trans- formation and inverse transformation.A new kind of codes based on the perfect reconstruction QMF(PB- QMF)for spreading spectrum communication system is presented,which is a type of multi-value codes rather than the traditional binary valued ones.Theoretical analysis and simulation results indicate that due to the or- thogonal relation between wavelet function and scale function and the property of perfect reconstruction,the spreading codes have perfect anti-jamming ability. |
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| Keywords: | PR-QMF direct sequence spread spectrum spreading codes |
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