Patent ID: 6094167
Filing Date: 2000-07-25
Classification: H01Q,H04L

Abstract:
A process for operating a phase controlled group antenna which comprises the steps of:(a) collecting digital data with a plurality of antenna elements having respective weighting factors;(b) feeding said digital data through a forward filter having respective weighting factors and producing a processed forward-filter output signal (S.sub.FFF) representing a sum of weighted signals from the individual antenna elements;(c) processing said output signal (S.sub.FFF) in a decision circuit;(d) subjecting an output of said decision circuit to a backward filter having respective weighting factors to produce a backward-filter output signal (S.sub.FFF) in a decision feedback process;(e) subtracting said backward-filter output signal (S.sub.FFF) from said forward-filter output signal (S.sub.FFF) at an input to said decision circuit;(f) for detection of subscriber data, shutting down the decision feedback process and feeding the forward-filter output signal (S.sub.FFF) representing a sum of weighted signals from the individual antenna elements directly to a Maximum Likelihood Sequence Estimator; and(g) permanently switching on said decision feedback process in parallel with said Maximum Likelihood Sequence Estimator for continuous adaptation of said weighting factors.