【摘要】 采用遗传算法(GA)进行了一种新颖的超宽带(UWB)脉冲波形的设计。从多带Chirp信号出发,将波形设计问题转化成有约束条件的逼近问题求解,然后通过遗传算法解决逼近问题。得到的波形不仅满足联邦通讯委员会(FCC)的频谱模板,而且具有88%的频谱利用率。仿真结果验证了采用遗传算法的波形设计具有低时间复杂度;提出的UWB脉冲波形具有较高的频谱利用率,优于其他的UWB脉冲例如B样条脉冲。更多还原

【Abstract】 A novel ultra-wideband(UWB) pulse waveform design using genetic algo r ithm is proposed.At first,we use the multi-band chirp signals and convert th e waveform design problem into a constrained approximation problem.Then,we use G A to solve the approximation problem.The waveform obtained in this way not onl y meets the FCC spectral mask,but also has a spectrum utilization rate of 88%. S imulation results verify the waveform design using GA has low time complexity;a nd the proposed pulse waveform has high spectral efficiency,superior to other U WB pulse such as B-spline impulse.更多还原