Wireless Flexible Personalized Communications
Wireless Flexible Personalized Communications
Digital Beamforming in Wireless Communications
Digital Beamforming in Wireless Communications
CDMA Systems Engineering Handbook
CDMA Systems Engineering Handbook
Wcdma for Umts
UMTS/IMT-2000 based on wideband CDMA
IEEE Communications Magazine
An overview of air interface multiple access for IMT-2000/UMTS
IEEE Communications Magazine
Transmit beamforming and power control for cellular wireless systems
IEEE Journal on Selected Areas in Communications
Computationally efficient MIMO HSDPA system-level modeling
EURASIP Journal on Wireless Communications and Networking - Special issue on broadband wireless access
Performance Evaluation of Interference Bound Backhaul Links in High Capacity Wireless Networks
Wireless Personal Communications: An International Journal
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Smart antennas exploit the inherent spatial diversity of the mobile radio channel, provide an antenna gain, and also enable spatial interference suppression leading to reduced intracell as well as intercell interference. Especially, for the downlink of future CDMA-based mobile communications systems, transmit beamforming is seen as a well-promising smart antenna technique. The main objective of this paper is to study the performance of diverse antenna array topologies when applied for transmit beamforming in the downlink of CDMA-based networks. In this paper, we focus on uniform linear array (ULA) and uniform circular array (UCA) topologies. For the ULA, we consider three-sector base stations with one linear array per sector. While recent research on downlink beamforming is often restricted to one single cell, this study takes into account the important impact of intercell interference on the performance by evaluating complete networks. Especially, from the operator perspective, system capacity and system coverage are very essential parameters of a cellular system so that there is a clear necessity of intensive system level investigations. Apart from delivering assessments on the performance of the diverse antenna array topologies, in the paper also different antenna array parameters, such as element spacing and beamwidth of the sector antennas, are optimized. Although we focus on the network level, fast channel fluctuations are taken into account by including them analytically into the signal-to-interference calculation.