University of Twente Student Theses


A stable matching based adaptive subcarrier assignment method for multimodal fibre access networks

Sikkes, Bart (2006) A stable matching based adaptive subcarrier assignment method for multimodal fibre access networks.

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Abstract:We live in a time when the internet becomes more and more present in our lives and other services start using the same infrastructure. This causes an ever increasing need for bandwidth, both in core networks and access networks. When focussing on the latter we see a shift from using copper to using glass. These networks bring new challenges to overcome. For example the subcarrier assignment problem when using the higher order lobes of a multimodal fibre. Developing an adaptive subcarrier assignment method to work in such a network is the goal of this master assignment. To do this, first similar problems and algorithms are explored. During that exploration we came across the stable matching algorithm. To determine how well this algorithm works we need to test it. But as the real system isn't available yet, a simulation has to be used. Once the simulation is implemented the functionality of the algorithm will be tested and we will determine how well it performs compared to other subcarrier assignment methods. For this three other methods are introduced: contiguous, interleaved and Hungarian algorithm based. The four methods are then compared on two things: on the amount of bits the ONUs are able to load per symbol and on the mean sojourn times the ONUs experience. Several cases of simulation inputs are defined to explore the different aspects of the stable matching method. These simulations show that indeed a working adaptive subcarrier assignment method based on the stable matching algorithm has been developed. This resulting method has some useful properties which are discussed in this thesis.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Computer Science MSc (60300)
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