一种跳时超宽带无线电信号的高效同步捕获方法

High performance acquisition approach for time-hopping UWB sequence in wireless communication

为了实现高效的跳时超宽带无线电信号的同步捕获,主要研究了超宽带无线通信中跳时序列码的同步技术,对捕获过程中的两个主要性能指标,即平均捕获时间和捕获概率进行了深入的分析,提出了一种适于超宽带无线通信跳时码的同步捕获方法——二维空间下的菱形捕获法。计算机仿真结果表明,该捕获方法工作原理简单、捕获速度快、硬件复杂度低,是超宽带冲激无线电的有效捕获方法之一。

One of the key technologies for UWB impulse radio is synchronization. The synchronization technology for time-hopping sequence in UWB wireless communication was studied. Such issues as mean acquisition time and acquisition probability were deduced theoretically. A novel rapid acquisition approach termed two-dimensional diamond detection was proposed for time-hopping sequence in UWB wireless communication. Finally, the numeric acquisition performances of this approach were obtained by computer simulations. The result proved that this approach can get into synchronization state more rapidly with simple theory and simple hardware,