| 一种基于多频带PSWFs组合的CUWB自适应脉冲波形设计 |
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| 引用本文： | 陈国东, 武穆清. 一种基于多频带PSWFs组合的CUWB自适应脉冲波形设计[J]. 电子与信息学报, 2008, 30(6): 1432-1436. doi: 10.3724/SP.J.1146.2006.01574 |
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| 作者姓名： | 陈国东 武穆清 |
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| 作者单位： | 北京邮电大学宽带通信网络实验室 北京,100876;北京邮电大学宽带通信网络实验室 北京,100876 |
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| 摘 要： | 本文简述了认知超宽带(CUWB)系统的工作原理,并从自适应频谱环境和兼容FCC频谱模板的角度出发,建立了基于频谱感知来动态构建CUWB系统自适应辐射掩蔽的机制。然后,利用PSWFs函数的特性,提出了一种基于多频带的回转椭球波函数(PSWFs)基的加权线性组合来设计CUWB自适应脉冲波形的算法。仿真结果表明,该算法所产生的脉冲波形不仅能满足CUWB系统频谱模板的要求,而且能自适应模板的动态变化。
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| 关 键 词： | 认知超宽带系统 自适应频谱模板 自适应脉冲波形 回转椭球波函数 |
| 收稿时间： | 2006-10-17 |
| 修稿时间： | 2007-05-15 |
Adaptive Pulse Waveform Design Based on the Combination of Multiple PSWFs for CUWB System |
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| Chen Guo-dong, Wu Mu-qing . Adaptive Pulse Waveform Design Based on the Combination of Multiple PSWFs for CUWB System[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1432-1436. doi: 10.3724/SP.J.1146.2006.01574 |
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| Authors: | Chen Guo-dong Wu Mu-qing |
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| Affiliation: | Broadband Communication Network Lab, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | This paper introduces the operating fundament of Cognitive Ultra WideBand (CUWB) wireless communication system and gives a scheme of dynamically obtaining adaptive emission mask based on spectrum sensing to adapt to spectrum environment and be compatible with FCC spectral mask. Then, a method to generate adaptive CUWB shaping pulse is proposed based on weight combination of Prolate Spheroidal Wave Functions(PSWFs) matching UWB multiple sub-band spectral mask. The simulation results show that the pulse waveforms shaped by this method conform the spectral mask constraint for CUWB, adapt to dynamical variety of the spectral mask. |
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| Keywords: | Cognitive Ultra WideBand system(CUWB) Adaptive spectral mask Adaptive pulse waveform Prolate Spheroidal Wave Functions(PSWF) |
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