A study on SINR Characteristics of Adaptive Antenna Array based on Weight and Antenna Space Control

摘要

In this paper, we address the analysis of the performance of adaptive antenna array based on weight and antenna space control. It is well known that a typical adaptive antenna array with M fixed antennas (AAA-W) can cancel at most M - 1 interference signals. However, adaptive antenna array with two antennas based on weight and space control can cancel more than two interference signals. In this paper, we investigate a model of probability density function (PDF) in terms of achieved SINR (Signal to Noise plus Interference signal power Ratio) while maximum antenna space, SNR (Signal to Noise power Ratio), SIR (Signal to Interference signal power Ratio), the number of interference signals, are given and direction of arrivals follow uniform distribution. We employ curve fitting to the data of achieved SINR based on Monte Carlo simulations and obtain the model of PDF in terms of achieved SINR. In addition, we provide a model of the parameters in the PDF as a function of SIR and the number of interference signals since this investigation can provide more general model. Numerical evaluations have shown the validity of the distributions based on the proposed models with Kolmogorov-Smirnov statistic and Kullback-Leibler divergence.