满足UWB室内辐射掩蔽的脉冲信号功率谱分析  

Analysis of Pulse Signals on the Power Spectrum According with UWB Emission Mask-indoor

作　　者：关炜[1] 余芬[1] 陈锡华[2] 

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004 [2]桂林航天工业高等专科学校,桂林541004

出　　处：《无线通信技术》2007年第3期17-20,共4页Wireless Communication Technology

基　　金：国家自然科学基金(60432040;60472091);教育部新世纪优秀人才支持计划(NCET-05-0754);广西自然科学基金(桂科自0447093)资助

摘　　要：通过分析高斯脉冲的求导阶数与功率谱密度(PSD)中心频率的关系,提出了一种利用高斯脉冲及其高阶导数组合波形作为发射信号,这种信号可以满足美国联邦电信委员会(FCC)对UWB信号的频谱规定。该方法通过选择适当的脉冲形成因子α和求导阶数n,对各段辐射掩蔽特性进行逼近。仿真验证了该方法的有效性,能够获得较好的逼近掩蔽特性的组合脉冲串。The method using combining Gaussian pulse and its higher-order derivatives waveform is presented on the analysis of the relations of the central frequency of power spectral density and the higher-order derivatives of Gaussian pulse, which satisfies UWB emission mask by FCC proposed. Firstly, selecting propriety pulse forming factor approaches emission mask property of each subsection applying different Gaussian pulse wave combination. Then, the better combination pulse string of approaching emission mask property can be got by optimizing combination of each subsection. Lastly, the simulation result shows this method is efficient.

关 键 词：辐射掩蔽 功率谱密度 高斯脉冲组合 分段逼近 

分 类 号：TN914[电子电信—通信与信息系统]