Closed BER expression of multi-user DS UWB systemsin indoor fading channel  

直扩多用户超宽带系统在室内衰落信道下的BER表达式(英文)

作　　者：樊祥宁[1] 黄勇富[1] 毕光国[1] 

机构地区：[1]东南大学移动通信国家重点实验室,南京210096

出　　处：《Journal of Southeast University(English Edition)》2006年第1期16-20,共5页东南大学学报（英文版）

基　　金：The National High Technology Research and Deve-lopment Program of China (863Program) (Nos.2001AA123042,2003AA123330,2005AA123320).

摘　　要：The bit error rate （BER） performance of multi-user direct spreading bi-phase shift keying （DSBPSK） direct impulse ultra wideband （UWB） systems is analyzed and simulated based on a statistical indoor multi-path fading channel model. The BER of the system is theoretically derived and given in closed form, which is expressed in terms of channel parameters and system parameters such as pulse width parameter, pulse repeat period, user number and pulse waveform. With this BER expression, the effect of these parameters on the system performance can be evaluated in a uniform way. Simulation results well match the theory numerical results, and prove that the multi-access interference （MAI） of DS-BPSK UWB is a normal distribution.基于室内多径衰落信道统计模型,分析并仿真了直扩二相相移键控多用户超宽带无线通信系统的比特误码率性能.通过理论分析,推导出了系统比特误码率性能的解析表达式,该表达式表示为脉冲宽度、脉冲重复周期、用户数以及脉冲波形等信道参数和系统参数的函数,从而可以方便、统一地分析这些参数对系统性能的影响.仿真结果与基于理论分析的数值计算结果相当吻合,表明直扩二相相移键控超宽带系统的多址干扰为正态分布.

关 键 词：ultra wideband （UWB） direct spreading （DS） bi-phase shift keying （BPSK） MULTI-USER fading channel performance analysis 

分 类 号：TN92[电子电信—通信与信息系统]