Timing error detector using particle filtering

In this paper we propose a new timing error detector for timing tracking loops inside the Rake receiver in DS-CDMA. Based on a particle filter, this timing error detector jointly tracks the delays of each path of the frequency selective channels. The proposed scheme avoids the drawback of the classical early late gate detector, which is not able to separate closely spaced paths. Simulation results show that the proposed detector outperforms the conventional early late gate detector in indoor scenarios.