Blind equalisation of communication channels for equal energy sources: Energy matching approach

A new energy-matching approach for blind equalisation of possibly non-minimum phase channels is presented. The scheme exploits second order statistics and uses oversampling, but does not use the matching of statistics of the input with that of the output symbols. All the source symbols must have equal energy. A finite impulse response filter is used as an equaliser, whose weights are updated by using the energy constraint imposed on the output symbols. The proposed scheme is computationally light and converges in one epoch only.