Ψηφιακές τεχνικές χωρικής διαμόρφωσης του διαγράμματος ακτινοβολίας σε ασύρματα συστήματα επικοινωνιών
Μιχαηλίδης, Εμμανουήλ Θ.
The aim of this thesis was the theoretical study, design and simulation of several digital beamforming techniques. These techniques use digital signal processing methods and can be effectively applied in antenna arrays. Specifically, advanced optimal and adaptive algorithms as well as direction of arrival estimation techniques were examined which can boost wireless communication systems’ performance in different propagation environments. The above digital techniques were studied and compared taking into account their complexity, their processing speed and their robustness. The optimization of these algorithms and techniques leads to further improvement of smart antenna technology which can efficiently implement Space Division Multiple Access technique (SDMA) and offer capacity increment, interference suppression, multipath fading reduction and upgraded Quality of Service (QoS).