苏州大学本科生毕业设计（论文）目录摘要Abstract.........2第一章绪论31.1研究背景及意义…1.2国内外研究现状.41.3本文研究内容及章节安排第二章认知超宽带系统建模2.1认知超宽带系统模型2.1.1认知超宽带的结构.2.1.2频谱感知..2.1.3背景信号与能量分析..…8第三章基于Chirp信号的超宽带脉冲波形设计…103.1超宽带成形脉冲设计…103.2压缩脉冲信号设计.…113.3基于组合Chirp压缩信号的软频谱自适应设计.133.4本章小结…14第四章总结与展望15参考文献1617苏州大学本科生毕业设计（论文）摘要认知超宽带是结合认知无线电的思想和超宽带通信优点的一种智能通信系统技术，它以解决频谱资源浪费、提高频谱利用率，不影响现有通信系统的共享频谱为目标，是一种很具有发展前景的通信技术。本文主要解决超宽带通信系统与环境中存在的窄带通信系统的共存问题。通过结合认知无线电的理念以及软频谱适配的设计思路，着重于与超宽带通信系统的工作环境交互，通过对环境中干扰的变化进行频谱感知，实时修改针对超宽带发生信号所需的频谱模板，设计出一种动态的、可编程的脉冲发生器。关键词：认知超宽带：频谱感知：脉冲发生器苏州大学本科生毕业设计（论文）AbstractCognitive ultra-wideband is an intelligent communication system technology thatcombines the advantages of cognitive radio and ultra-wideband communication.It aims atimproving spectrum utilization without affecting the shared spectrum of existingcommunication systems.It is a promising development.Communication technology.This paper mainly addresses the coexistence of UWB and existing narrowbandsystems.By combining the concept of cognitive radio and the design concept of SSA,thefocus will be on how to interact with UWB's work environment.The focus is on interactingwith the working environment of an ultra-wideband communication system,and spectrumsensing of interference in the environment is performed to modify the spectrum requiredfor generating signals for ultra-wideband in real time.Dynamically programmable pulsegenerator.Keywords:Cognitive Ultra-Wideband Spectrum sensing;Pulse generator