Performance appraisal of anti-interference technology with adaptive nulling antenna based on SINR of array output

We proposes an interference mathematical model of LMS algorithm beam forming after analyzing LMS using matrix theory, and we also build another mathematical model of output SINR (Signal to Interference and Noise Ratio) by assuming the signal and interference are unrelated. Then, based on these models, we further analyze the anti-noise performance of LMS algorithm when there are no inference signals, while when there are interference signals we make the conclusion that the algorithm affects the interference totally different under different degree of interference. At last, we test and verify our analysis using mathematical emulation, and make the performance appraisal of anti-interference technology with adaptive nulling antenna.