Antenna architectures for CDMA integrated wireless access networks
Elvino Silveira Sousa · 2002
In this paper we consider different antenna sub-systems for integrated wireless access networks (IWAN). The various antenna sub-systems present alternatives to the standard architecture of a cellular system where the transmission/ reception occurs via omnidirectional or directional antennas with each antenna located at a base station. The appropriate antenna sub-system is dependent on the modulation scheme used. In this paper we consider a CDMA scheme along with various antenna sub-systems such as a distributed antenna, an antenna sub-system which we refer to as a sectorized distributed antenna, and a distributed antenna utilizing sub-carrier multiplexing. These concepts lead to a network architecture consisting of network switches, radio controllers, base stations, and the various antenna subsystems.