IEEE802.15.3a信道中DS-UWB的多径干扰分析  

Multipath interference analysis with IEEE 802.15.3a channel model for DS-UWB communication systems

作　　者：杨莘元[1] 殷潜[1] 李一兵[1] 毕晓艳 

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：《黑龙江大学自然科学学报》2007年第1期6-9,共4页Journal of Natural Science of Heilongjiang University

摘　　要：UWB主要应用于密集多径室内信道中,多径干扰(MPI)是系统的主要干扰来源之一。分析了IEEE802.15.3a信道中直接序列UWB(DS-UWB)多径干扰的性质。通过精确考虑每条多径带来的干扰,提出了多径干扰呈高斯分布的假设,并根据信道模型的特性给出了一种简单的估算多径干扰方差的方法。在此基础上计算了匹配滤波器接收机的错误概率并与计算机仿真值做了对比,结果表明二者较为吻合。Since UWB system generally operates in dense multipath indoor channel, multipath interference （MPI） becomes one of the main interferences affecting System performance. The properties of MPI for DS - UWB in IEEE 802. 15.3a channel mode are analyzed. By accurately taking the impact brought by each path, the authors proposed the Gaussian approximation for MPI distribution and according to the channel model characteristics they presented a simple method for MPI variance calculation. The error probability of the matched filter receiver is calculated based on above analysis and it accord with the result determined by simulation.

关 键 词：DS—UWB 多径干扰 IEEE 802.15.3a信道 误符号率 

分 类 号：TP914.42[自动化与计算机技术]