| 超宽带脉冲无线电系统中一种新的均衡方法 |
| |
| 引用本文： | 王晓东,尹华锐,徐佩霞. 超宽带脉冲无线电系统中一种新的均衡方法[J]. 中国科学技术大学学报, 2006, 36(5): 461-465 |
| |
| 作者姓名： | 王晓东 尹华锐 徐佩霞 |
| |
| 作者单位： | 中国科学技术大学电子工程与信息科学系,安徽,合肥,230027 |
| |
| 基金项目： | 中国科学院知识创新工程项目 |
| |
| 摘 要： | 针对脉冲无线电中跳时-脉冲位置调制的非线性调制方式,采用了一个等效的线性调制模型,提出了一种变形的判决反馈均衡滤波器（decision feedback equalizer,DFE）结构,用来对接收信号进行均衡以减小多径干扰.该变形的DFE增加了一个可调偏移量,反馈来自于根据判决结果而生成的序列,反馈滤波器的抽头间隔小于符号间隔.大量的仿真结果表明,该方法能有效地减小超宽带脉冲无线电通信系统中的多径干扰,降低数据接收的误码率,提高系统的接收性能.
|
| 关 键 词： | 超宽带无线通信 脉冲位置调制 均衡 |
| 文章编号： | 0253-2778(2006)05-0461-05 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005-03-10 |
A new equalization method in impulse radio ultra wideband communication system |
| |
| WANG Xiao-dong,YIN Hua-rui,XU Pei-xia. A new equalization method in impulse radio ultra wideband communication system[J]. Journal of University of Science and Technology of China, 2006, 36(5): 461-465 |
| |
| Authors: | WANG Xiao-dong YIN Hua-rui XU Pei-xia |
| |
| Affiliation: | Department of Electronic Engineering and Information Science,University of Science and Technology of China , Hefei ,230027,China |
| |
| Abstract: | Under the equivalent linear modulation model of the time hopping pulse position modulation(TH-PPM) signal,through the theoretical research and deriving formula,a new kind of decision feedback tap filter with transformative structure was proposed to equalize received impulse radio signal,to reduce the effect of multiple path interference.This transformative DFE added an adjustable offset value,its feedback coming from a sequence generated from the decision result,and the tap interval of its feedback filter was less than the symbol interval.Simulation results indicate that this method can efficiently decrease multiple path interference,bit error rate of data receiving and improve the system performance. |
| |
| Keywords: | ultra wideband wireless communication pulse position modulation equalization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
