Improved self optimized variable antenna array amplitude tapering scheme to combat cell size breathing in UMTS and CDMA networks

Cell size breathing can lead to the generation of coverage holes in UMTS and CDMA networks and solution to this problem was proposed before in our previous contribution with title OMC-R controlled remote electronic variable tapered planar array antenna. The contribution of this paper is including both horizontal and vertical antenna amplitude taper to combat the effect of cell size breathing as foot print depends on horizontal as well as vertical beam width. In this paper we will introduce an improved version of antenna array tapering using four Node-B sector antennas. In this paper we will optimize soft as well as softer hand-off performance by controlling and varying the vertical and horizontal antenna array amplitude taper simultaneously with the increasing congestion. Our contribution of this paper is to improve soft as well as softer hand-off performance by using a remotely re-configurable amplitude control antenna array in the self optimizing network.