ANALYSIS OF A DECISION DIRECTED BEAMFORMER

In this paper, we study a technique for using decision direction to ex tract digital signals from antenna array data. The algorithm alternate s between 1) estimating and demodulating the received signals and 2) u sing the resulting hit decisions to regenerate the signal waveforms an d recompute the beamformer weights. An analysis of the (asymptotic) sy mbol error rate performance of the algorithm for the case of M-ary PSK signals is included, along with several representative simulation exa mples.