A new rapid synchronization method with anti-timing jitter for UWB systems in dense multipath environment

The paper proposes a new rapid synchronization method, i.e., multi-hypothesis maximum energy path acquisition (MH-MEPA) algorithm, with anti-timing jitter for ultra-wideband (UWB) systems in dense multipath environment. The method takes full advantages of the characteristics of the multi-hypothesis synchronization method and the indoor S-V channel propagation model proposed by IEEE 802.15.3a group to rapidly acquire the path signal with maximum energy. Thus, the whole synchronization process is divided into two stages, i.e., the multi-hypothesis rapid timing acquisition and maximum energy path signal acquisition. In the paper, theoretic analysis and simulations are made. Simulation results show that the proposed algorithm can reduce the mean acquisition time and increase the accuracy and stability comparing with the existing synchronization methods, which means that the algorithm has the excellent performance of anti-time jitter. Moreover, numerical results validate as well that the S-V channel model accords with the real channel characteristics. That is to say, it is feasible to employ the S-V channel model to improve the synchronization performance for indoor UWB systems.