BER PERFORMANCE EVALUATION OF TWO TYPES OF ANTENNA ARRAY -BASED RECEIVERS IN A MULTIPATH CHANNEL

Smart antennasystems have received much attention in the last few years because they can increase system capacity by dynamically tuning out interference while focusing on the intended user. In this paper, we focused our research on the performance of two kinds of smart antenna receivers. An analytical model is proposed for evaluating the BER performance using a closed-form expression. Also, for the adaptive array, a simple way to account the multi-access interference can be exploited to evaluate the average probability of error when the users are randomly distributed within an angular sector. The proposed model confirms the benefits of adaptive antennas in reducing the overall interference level (intercell/intracell) and to find an accurate approximation of the error probability. In the two kinds of receivers, we assessed the impact of smart antenna systems and we considered the case of conventional single antenna receiver model as reference (single user/single antenna).

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