Performance Analysis of Switching Based Techniques for Wireless Applications

• Main Author: Gaaloul, Fakhreddine
• Other Authors: Alouini, Mohamed-Slim
• Language: en
• Published: 2012
• Online Access: Gaaloul, F. (2012). Performance Analysis of Switching Based Techniques for Wireless Applications. KAUST Research Repository. https://doi.org/10.25781/KAUST-29B01; http://hdl.handle.net/10754/224977

Switching techniques have been first proposed as a spacial diversity techniques. These techniques have been shown to reduce considerably the processing load while letting multi-antenna systems achieve a specific target performance. In this thesis, we take a different look at the switching schemes by implementing them for different other wireless applications. More specifically, this thesis consists of three main parts, where the first part considers a multiuser environment and an adaptive scheduling algorithm based on the switching with post-selection scheme for statistically independent but non-identically distributed channel conditions. The performance of this switched based scheduler is investigated and a multitude of performance metrics are presented. In a second part, we propose and analyze the performance of three switched-based algorithms for interference reduction in the downlink of over-loaded femtocells. For instance, performance metrics are derived in closed-form and these metrics are used to compare these three proposed schemes. Finally in a third part, a switch based opportunistic channel access scheme is proposed for a cognitive radio system and its performance is analyzed in terms of two new proposed metrics namely the average cognitive radio access and the waiting time duration.