Abstract: Aiming at the problem that the conventional adaptive algorithm generally needs to estimate the direction of arrival signal beam and that the error of direction estimation will worsen the performance of an adaptive array, an improved adaptive algorithm is proposed here, based on a uniform linear array. By introducing the array steering vector, the ability to search for the desired signal beam is obtained by the adaptive array, so the complicated process for direction estimate is avoided. Its system scheme is also presented here. Finally, the validity of the algorithm is verified by the simulation experiment on the 16-units linear array.

Key words: adaptive array, beam forming, interference cancellation, antenna array