一类适用于超宽带无线电的跳时序列族

跳时技术是超宽带无线电实现多址通信的一项关键技术。为保证超宽带无线电的可靠通信并减小系统中用户之间的多址干扰,系统要求跳时序列具有优良的跳时相关性能。基于对二次同余理论的研究,构造了一类适合于超宽带无线电通信系统的跳时序列族,给出了它的构造方法和序列的性质。然后通过对跳时序列相关性能的分析,证明了所得到的跳时序列族具有优良的跳时相关性能,满足跳时异相自相关最大值S_(max)≤2,跳时互相关最大值C_(max)≤4。最后,将该类跳时序列族用于超宽带无线电多用户通信系统进行了误码率性能仿真,仿真结果表明采用该序列族将使系统具有更好的多址性能。

Family of time-hopping sequences for ultra wideband radio

TH(time-hopping) technique plays an important role in THSS-HWB (time-hopping spread spectrum ultra wideband) multiple access communication. In order to ensure that THSS - UWB communication system works rightly and multiple access interference is decreased, TH sequences with good TH correlation properties are necessary. Based on the theory of quadratic congruence, a family of TH sequences for UWB radio communication system is constructed and its some properties are got. Also, it is proved that the sequences constructed here have ideal time-hopping correlation properties, namely Smax (maximum auto-correlation value) is at most 2 and Cmax (maximum cross-correlation value)is at most 4. At last, the computer simulation of UWB communication system is done, and the conclusions show that the UWB system exploiting the time-hopping sequences constructed in this paper has a good multiple access performance.