Abstract: We consider the problem of planning a mixedlinerates (MLR) wavelength division multiplexing (WDM) transport
opticalnetwork. In such networks, different modulation formats
are usually employed to support the transmission at different linerates. Previously proposed planning algorithms, have used a
transmission reach limit for each modulation format/linerate,
mainly driven by single linerate systems. However, transmission
experiments in MLR networks have shown that physical layer
interference phenomena are more significant between
transmissions that utilize different modulation formats. Thus, the
transmission reach of a connection with a specific modulation
format/linerate depends also on the other connections that copropagate
with it in the network. To plan a MLR WDM network,
we present routing and wavelength assignment (RWA)
algorithms that take into account the adaptation of the
transmission reach of each connection according to the use of the
modulation formats/linerates in the network. The proposed
algorithms are able to plan the network so as to alleviate
interference effects, enabling the establishment of connections of
acceptable quality over paths that would otherwise be prohibited
Abstract: We consider the problem of planning a mixedlinerates (MLR) WDM transport opticalnetwork. In a MLR network, the interference between different modulation format/linerate connections affect the transmission reach of these connections. We present algorithms to plan a MLR network that take into account the variation of the transmission reach according to the use of the modulation formats/linerates in the network.
Abstract: We consider the problem of planning a mixedlinerate(MLR) wavelength division multiplexing (WDM) transport
opticalnetwork. In such networks, different modulation formats
are usually employed to support transmission at different linerates. Previously proposed planning algorithms have used a
transmission reach bound for each modulation format/linerate,
mainly driven by single linerate systems. However, transmission
experiments in MLR networks have shown that physical layer
interference phenomena are more severe among transmissions
that utilize different modulation formats. Thus, the transmission
reach of a connection with a specific modulation format/linerate
depends also on the other connections that co-propagate with it
in the network. To plan a MLR WDM network, we present
routing and wavelength assignment (RWA) algorithms that
adapt the transmission reach of each connection according to the
use of the modulation formats/linerates in the network. The
proposed algorithms are able to plan the network so as to
alleviate cross-rate interference effects, enabling the
establishment of connections of acceptable quality over paths that
would otherwise be prohibited.