REALISTIC ANTENNA ELEMENTS AND DIFFERENT ARRAY TOPOLOGIES IN THE DOWNLINK OF UMTS-FDD NETWORKS

摘要

Prior investigations have shown that the capacity of a UMTSFDD network can be highly improved by employing antenna arrays at the base station side and utilizing beamforming. The amount of capacity improvement, which can be achieved, strongly depends on the number of antenna elements in the array, the array topology as well as the characteristics of the single antenna element. Therefore, close-to-reality investigations on the network capacity must incorporate realistic antenna element characteristics. In this contribution, a UMTSFDD network equipped with smart antennas at the base stations is analysed on system level to gain insight on the effect of different realistic antenna and array characteristics on the network capacity. For this purpose, different types of antenna elements like dipole and commercially available real-world base station antennas for UMTS are compared for different array topologies.