Tracking of mobile users in a mobile communications system using adaptive convergence parameter

Abstract

In future telecommunication systems, one of the most important ways to increase system capacity is to use adaptive antennas. They enable reception and transmission using narrow beams which drastically reduce interference for other users. The problem with the conventional adaptive tracking algorithms is that the adaptation performance is dictated by the choice of the convergence parameter or step size. We employ a multi-target tracking method and modify its tracking performance by an adaptive step size. The simulation results show that the proposed adaptive control of the convergence parameter gives fast convergence and small misadjustment errors, which cannot be combined by using fixed step size.