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A study on reactively steered adaptive array in OFDM systems

We propose it new scheme to introduce the REactively Steered Adaptive Array (RESAA) technique into an orthogonal frequency-division multiplexing (OFDM) system. taking advantage of the OFDM-transmission-data-frame format characteristics. Using computer simulation, we evaluate the performance of the proposed RESAA system in suppressing a signal with a delay time exceeding the guard interval as interference under the IEEE802.11a system format. The results show that the proposed scheme provides a significantly faster convergence and a better output signal-to-interference ratio (SIR) compared to the conventional scheme.