Beamforming in Tight Specifications Environment

The aim of this paper is to raise the issue of tight-specifications environment performance. Although there are many techniques such as RLS, MVDR and MUSIC, only the NLMS technique will be considered to prove the importance of this issue. Here, tight specifications environment is intended to mean environment with one or more of the following conditions; high noise level, high interference level, large number of interferers, and close angular separation between the desired signal and the interference. Some indicators are used; among them, SIR, SINR, standard deviation of the error, and the offset from the maximum gain of the beam. The results show the importance of these issues for evaluating algorithms used in beamforming.