一种超宽带脉冲的设计新方法  

A new approach to UWB pulse design

作　　者：姜弢[1] 胡佳伟[1] 侯艳丽 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2008年第12期11-14,共4页Applied Science and Technology

基　　金：教育部归国留学人员科研择优资助项目.

摘　　要：以最大限度地接近FCC(联邦通信委员会)辐射掩蔽要求为目标,以具有不同波形形成因子、不同阶次的高斯脉冲导函数为基函数、利用遗传算法来优化权重系数向量,提出基于遗传算法优化权向量的高斯导函数线性组合的超宽带(ultra-wideband,UWB)脉冲设计.以FCC对UWB系统室内辐射功率的限制进行实验,结果表明,与二阶高斯微分脉冲、随机组合脉冲相比,基于遗传算法的组合脉冲能够较好地满足FCC制定的室内辐射掩蔽标准,同时减小了误码率.Aiming at closing to the federal communication regarding the Gaussian derivatives with different waveform the weight coefficient vector using genetic algorithm （GA） commission （FCC） emission mask as much as possible, shaping factors and order as basic functions, optimizing , the UWB （ultra-wideband） pulse design is presented based on Gaussian derivatives linear combination whose weight vector is optimized by GA. The experiment of FCC＇s restriction on UWB indoors emission power is introduced in this paper, and the experimental results illustrate that compared with the second derivative Gaussian pulse and random combination pulse, the combined pulse based on GA can meet FCC indoors emission mask criterion better and decrease bit error rate （BER）.

关 键 词：脉冲波形设计 超宽带 高斯脉冲 遗传算法 

分 类 号：TN914.4[电子电信—通信与信息系统]