A PHASE algorithm for blind adaptive optimum diversity combining

A new PHASE algorithm is proposed for blind adaptive extraction of signal in the presence of interference by cyclostationary signal processing using an antenna array. The algorithm operates in an interference-limited system in which the desired and interfering signals have equal symbol rates, but slightly different carrier frequencies. Compared to the SCORE algorithm and a modified version of SCORE, the new algorithm provides a simpler and faster converging means to estimate the channel phase for diversity combining. There is no need to solve eigenequations or to calculate the stochastic gradient. Analytical and simulation results are presented and performances are compared with DMI (direct matrix inversion), and SCORE algorithms in terms of their convergence rate, steady state SINR, and the computation complexity. This method is relatively simple and very promising in application to indoor wireless communication for its ability to reject heavy interference and increase the spectrum efficiency. Analysis and simulation results are presented to confirm this ability