Research on a New Kind of Rake-MKFA Receiver Based on DS-UWB System

Based on analyzing DS-UWB system and signal model with multipath interferences, this paper proposes a new kind of Rake receiver based on modified Kalman filter algorithm. This kind of receiver simultaneously consider the channel gain factor and the noise time-variable statistics characteristic, which can speed up the convergence rate and enhance the track performance of the algorithm. The simulation results indicate that the Rake-MKFA receiver has better EBR performance than traditional Rake receiver, and is provided with quick algorithm convergence rate, the low complexity and the strong ability of anti-multipath interferences.