Aggelos Saatsakis

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Wireless systems migrate towards the era of “Beyond the 3rd Generation” (B3G). A fundamental facilitator of this vision is the evolution of high speed, adaptive networks, needed for better handling the offered demand and improving resource utilisation. Adaptive networks dynamically select their configuration, in order to optimally adapt to the changing(More)
Beyond 3rd Generation (B3G) wireless communication systems are comprised from different Radio Access Technologies (RATs) in order to satisfy all user needs in services. The coexistence of many RATs in the same environment needs advanced network management systems in order to ensure efficient resources utilization while achieving the best possible Quality of(More)
In this paper, we provide a framework for enhancing radio resource management (RRM) in 3G long term evolution (LTE) systems with cognitive features. By exploiting the capabilities of orthogonal frequency division multiplexing (OFDM) LTE access technology, network segments are capable of properly adapting to the environment conditions by applying RRM(More)
With the deployment of next generation (4G) mobile radio systems an additional radio access network is established. A variety of different Radio Access Technologies (RATs) will be operated in parallel. In this framework, the Long Term Evolution (LTE) system, specified by 3GPP, will have to co-exist with WiMAX, mobile 2G/3G networks and Wireless Local Area(More)
In this paper, we provide a framework enhanced with emerging management strategies for future communication systems with cognitive features in the B3G era. By exploiting communications systems capabilities, network segments are capable of properly adapting to the environment conditions by applying optimization algorithms for radio resources allocation given(More)
Forced by an enormous cost pressure, investments into future radio network infrastructure as well as operational costs have to be minimised. More efficient and highly flexible use of scarce radio resources is mandatory without compromising high network performance and users' service quality perception. This paper highlights the means to achieve this, in(More)