Application of smart antennas to wideband code division multiple access : the uplink performance

Wijayasinghe, Don N (2004) Application of smart antennas to wideband code division multiple access : the uplink performance. Research Master thesis, Victoria University of Technology.


Adaptive antenna arrays have recently been introduced to cope with the high capacity required by the 3rd generation (3G) wireless communications systems. As adaptive antenna arrays focus narrow high gain beams towards the desired user and nulls towards interferers, both coverage and capacity of the network can be improved. To establish the performance gain that a smart antenna can deliver in a 3G environment (i.e., with mixed traffic), the implementation of adaptive antenna arrays for the uplink of a Wideband Code Division Multiple Access (WCDMA) system in the Frequency Division Duplex (FDD) mode is addressed in this thesis. The beam-forming is implemented with a LS - DRMTA algorithm and a Lagrange multiplier based algorithm using the Q channel only. The results show that the adaptive antenna arrays offer significant performance enhancement over switched beam and single antennas in a 3G environment (i.e., with mixed traffic).

Additional Information

Master of Engineering

Item type Thesis (Research Master thesis)
Subjects Historical > FOR Classification > 0906 Electrical and Electronic Engineering
Historical > FOR Classification > 1005 Communications Technologies
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords Electronics, Cellular telephone systems, Code division multiple access, Antennas, Wireless communication systems, Broadband communication systems
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