Multipath Time Delay Estimation Based on Third-order Cumulants
Guo Jian-jun · Information and Electronic Engineering · 2009
The problem of time delay estimation under the multipath channel is investigated. By using one dimension slice of third-order cumulant as high-order statistics,a new algorithm of time delay estimation is presented combined with cross-correlation approach. The correlative data is weighted to improve the time delay estimation accuracy. The non-Gaussian signal time delays are estimated precisely with this approach, and spatially correlated Gaussian noises or symmetric distributed noises can be suppressed effectively. The algorithm has the advantage of low computation complexity and can be implemented easily. Simulation results demonstrate the effectiveness of the proposed algorithm.