UWB多址技术的研究

UWB multiple access techniques research

UWB技术不需载波,能直接调制脉冲信号,产生带宽高达几GHz的窄脉冲波形,其带宽远远大于目前任何商业无线通信技术所占用的带宽。超宽带系统的成功,很大程度上依赖于有效的多址技术的发展。主要研究内容是超宽带无线通信系统中的多址技术。通过计算机仿真的方法,比较了TH-UWB和DS-UWB两种多址方式的多址性能,得出DS-UWB无论是用户容量还是误比特率都要优于TH-UWB。

UWB technology, without carrier, can directly modulate pulse signal and produce bandwidth of up to several GHz narrow pulse waveform. Its bandwidth is much larger than any bandwidth used by any existing commercial wireless communications technology. The main contents of this paper are multiple access technology of ultra-wideband wireless communications system. Through computer simulation method, this paper compares the multiple access multiple access performances between the two forms of TH-UWB and DS-UWB. Thus we come to the conclusion： DS-UWB is betther than TH-UWB in either user capacity or bit error rate.