TSUNAMI (II) macrocellular field trial-system performance in the presence of deliberate interference

The TSUNAMI (II) project has addressed an investigation into the application of adaptive antenna technology for use in future generation mobile communications systems. The key aims of the project were to investigate the complexity versus increase in system capacity and coverage extension that can be achieved over the existing, non-adaptive networks. May 1998 saw the completion of an 8 month field trial, covering both macrocellular and microcellular trials. These investigations were performed at the Orange Testbed in Almondsbury, Bristol using a modified DCS-1800 base station. In this paper are presented a subset of the macrocellular field trial results, obtained using spatial and temporal reference beamforming (SRB and TRB) in the presence of deliberate interference. The results presented show the comparative performance of several selected adaptive antenna algorithms used by the TSUNAMI (II) testbed. The results of these trials demonstrate how the interference source and algorithm ability to track wanted to unwanted users influence the overall performance of the adaptive antenna base station (AA-BSS).