跳时超宽带无线电的性能分析  

Performance analysis of time-hopping ultrawideband impulse radio

作　　者：邹卫霞[1] 房玉东[2] 周正[1] 

机构地区：[1]北京邮电大学无线网络实验室,北京100876 [2]泰山学院宣传部,山东泰安271021

出　　处：《电路与系统学报》2005年第6期69-72,共4页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60372097);教育部科学技术研究重点项目(03035);国家863计划项目(2003AA123240)

摘　　要：超宽带脉冲无线电是无线通信领域的一种全新技术,有着广阔的应用前景。它是一种基带无载波短脉冲,不同于使用正弦载波的传统通信系统。本文用满足FCC频谱规划的脉冲——高斯脉冲的五阶导数推导了TH-BPSK方式下的跳时超宽带扩频系统的误码与多址性能,并研究了多径对其性能的影响,比较了TH-BPSK与TH-PPM系统性能,分析结果表明TH-BPSK的性能(未考虑多径)明显优于TH-PPM,但是TH-PPM抗多径性能优于TH-BPSK。Ultra Wideband impulse radio （UWB--1R）, a promising and novel radio technology, has a broad application prospect in wireless communication. In contrast with the conventional communication system using the ＇sine wave＇, UWB-1R is a baseband carrierless short pulse. Using the fifth-order derivative of the Gaussian pulse that satisfies the FCC spetral mask, we developed an error and multiple access performance for TH-BPSK UWB system and analyzed multipath effect on UWB system. Finally we compared TH-BPSK and TH-PPM. Theoretical analysis shows TH-BPSK performs better than TH-PPM when the multipath is ignored, but TH-PPM substantially outperforms TH-BPSK in multipath fading channels.

关 键 词：超宽带脉冲无线电(UWB-IR) TH-PPM TH-BPSK 

分 类 号：TN914.3[电子电信—通信与信息系统]