并行组合扩频超宽带系统调制方法及性能分析  

Modulation mode and performance analysis of uwb communication system based on parallel combinatory spread spectrum

作　　者：窦峥 孙立霞[2] 沙学军[1] 

机构地区：[1]哈尔滨工业大学通信技术研究中心,哈尔滨150001 [2]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2012年第11期46-50,共5页Journal of Harbin Institute of Technology

基　　金：黑龙江省博士后基金资助项目(LBH-Z08126)

摘　　要：为提高超宽带系统的抗干扰性能,在分析并行组合扩频通信和超宽带通信系统技术特征的基础上,结合这两种通信方式的技术优势,提出一种基于并行组合扩频的超宽带(PCSS-UWB)通信系统方案,并将高性能的MBOK调制方式应用到该系统.文章定性分析了基于PCSS-UWB通信系统性能与频带利用率关系,得出系统性能与并行组合扩频技术每次所能传输信息数据比特数有关的结论.仿真结果表明,当误码率为10-4时MBOK调制方式较传统的PPM调制方式的信噪比有约9 dB的提高.To improve the anti-interference performance of UWB communication system, a new UWB communication system based on parallel combinatory spread spectrum is proposed after analyzing the characteristics of UWB and PCSS. The application ofM-ary bi-orthogonal keying （MBOK） modulation in the new system is also discussed. In this paper, qualitative analysis is made to analyze the relationship between the system performance and band efficiency, and conclusion is got that the performance of PCSS-UWB communication system is related with the number of the transmission data in PCSS technology. Simulation shows that Eb/No is improved 9 dB in the system with MBOK modulation than that in the system with PPM modulation when BER is 10^-4.

关 键 词：并行组合扩频(PCSS) 超宽带(UWB) 多进制双正交键控调制(MBOK) DSSS-UWB 

分 类 号：TN918.1[电子电信—通信与信息系统]