Multipath Parameter Estimation for PLC Channels Using the GEESE Algorithm

摘要

We propose a multipath parameter estimation scheme for power-line communication (PLC) channel modeling. In the proposed scheme, we introduce a time-delay estimation scheme and an attenuation factor estimation scheme to analyze multipath parameters. For the time-delay estimation scheme, we employ the generalized eigenvalues utilizing signal subspace eigenvectors (GEESE) algorithm using frequency-domain channel measurements. Before the GEESE algorithm is used, spatial smoothing methods are applied to resolve the different paths in PLC channels. To estimate the attenuation factors, we derive a least-square estimator. Simulation results with theoretical channel models and experimental channel measurements show that the proposed scheme accurately estimates multipath parameters for PLC channel modeling.