Trading off transponders for spectrum in flexgrid networks
K Christodoulopoulos, P Soumplis… - 2013 Optical Fiber …, 2013 - ieeexplore.ieee.org
2013 Optical Fiber Communication Conference and Exposition and the …, 2013•ieeexplore.ieee.org
… We consider a slotted flexgrid network with transponders that have two flexibility degrees,
enabling: (a) the selection of the modulation format and (b) the choice of the spectrum (in
contiguous spectrum slots) they use. By adapting these, the flexible transponder can be
tuned to transmit at a specific rate over a specific reach using a specific amount of spectrum (in
slots) and requiring a specific guardband (in slots) from the spectrum-adjacent connections
to exhibit acceptable transmission quality, what we call a feasible (rate-reach-spectrum-guardband-cost) …
enabling: (a) the selection of the modulation format and (b) the choice of the spectrum (in
contiguous spectrum slots) they use. By adapting these, the flexible transponder can be
tuned to transmit at a specific rate over a specific reach using a specific amount of spectrum (in
slots) and requiring a specific guardband (in slots) from the spectrum-adjacent connections
to exhibit acceptable transmission quality, what we call a feasible (rate-reach-spectrum-guardband-cost) …
We propose algorithms for planning flexgrid networks under physical layer impairments. Using an optimization function that accounts for both the spectrum used and the transponders cost, we observe tradeoffs between these two optimization parameters.
ieeexplore.ieee.org
Showing the best result for this search. See all results