Ad hoc网络中的希尔伯特IT多包接收算法

Hilbert IT Multiple Packet Reception Algorithm for Ad hoc Networks

IT(Implicit Training)算法能够实现Ad hoc网络中二维信号的多包接收。利用希尔伯特变换的性质,同时结合IT序列的循环平稳特性,提出了一种改进的用于异步Ad hoc网络中二维解析信号多包接收的IT算法,对算法的性能以及影响性能的因素进行了仿真分析。仿真结果表明,与原算法相比,希尔伯特IT算法不仅提高了对用户数据包的分辨能力,而且性能更加稳定。

Implicit training （IT） algorithm can achieve multiple packet reception of complex data for Ad hoc networks. In this paper, an improved algorithm using the nature of Hilbert transform as well as the cyclostationarity of implicit training sequences is proposed, which can achieve the separation of 2-D analytic signals. We studied the performance of this new algorithm and factors affecting it through simulation. Compared with the original algorithm, the proposed algorithm can effectively improve the capability of multiple packet separation and work more steadily.