Simple PN code sequence estimation and synchronisation technique using the constrained Hebbian rule

An adaptive tapped delay line FIR filter updated by the constrained Hebbian rule can blindly estimate and synchronise to the code sequence of a direct sequence (DS) transmission. The proposed technique makes use of the fact that the dominant eigenvector is the spreading sequence itself. The implementation is very simple and is an attractive alternative to standard spread spectrum (SS) synchronisation techniques such as the RASE technique