"Dynamic Resource Allocation of Partial Crosstalk Cancellation in DSL networks"
Beier Li
The data rate performance of DSL broadband access networks is severely degraded by crosstalk among the different copper lines. The linear zero-forcing partial crosstalk cancellation (PCC) is a promising technique to mitigate the crosstalk. Other than the data rate performance, the delay performance is also very important for the user's experience. In this talk we introduce a set dynamic resource allocation algorithms of PCC in DSL networks, which can improve the data rate performance of PCC and meanwhile take the consideration of delay performance into account. The resource allocation at each time slot is formulated as weighted-sum optimization problem with constraints, and is solved efficiently through dual decomposition. Moreover, the adaptation of the resource budget parameter at each time slot is seen to have similarities with the tuning procedure of Lagrange multipliers as known from optimization theory.
Two OPTEC professors have been awarded three "Gouden Krijtjes", the yearly teaching awards given by the organization of engineering students (vtk). Prof. Lombaert was awarded the prize for the best course in civil engineering, and Prof. Diehl the prizes for the best professor and the best course in mathematical engineering (where he teaches numerical optimization). They received these awards at the yearly "proffentap" where experienced students taught them how to draft beer professionally.
