中文摘要：

针对UWB信号易受现有通信系统干扰的问题,提出基于有限项扁长椭球波函数的多频带自适应脉冲.利用认知无线电估计射频环境干扰温度并检测频谱空洞,然后借鉴OFDM的思想,将频带划分成若干个子带,生成自适应辐射掩蔽,利用有限项扁长椭球波函数设计各子带脉冲,最后将各子带脉冲在时域上进行加权组合,生成一种可进行无缝修正的多频带自适应脉冲.此脉冲在满足FCC辐射掩蔽要求的情况下,可达到85%以上的频谱利用率,同时具有很强的灵活性和抗干扰能力,可实现对发射波形的无缝修正以适应无线环境.

英文摘要：

In order to solve the problem of interference between an ultra-wide band system and existing communication systems,a multiple adaptive pulse based on finite prolate spheroidal wave functions was proposed.The system first sensed the spectrum environment,estimated the interference temperature,and searched the available band.Then it divided the available band into multiple sub-bands and generated an adaptive emission mask using the idea of OFDM for reference.It also system-designed the sub-band pulse using finite prolate spheroidal wave functions.Finally sub-band pulses were weighted and combined in a time domain to produce a new multiple adaptive pulse that could be seamlessly modified.This pulse can achieve more than 85% of spectrum utilization efficiency under the FCC emission mask and has strong flexibility and anti-jamming capabilities,as well as being able to achieve the seamless modification of launch waveform to adapt to the wireless environment.