For the energy optimization problem in bandwidth limited
IP over WDM networks, the lexicographic approach is adopted to handle the ILP for the two opposing objectives, i.e.
Existing local loops were designed for voice telephony, and can be bandwidth limited
by bridged taps and wire gauge changes.
The first RF filter of the receiver architecture determines the minimum frequency of the first IF stage, which influences the number of IF stages, the total number of gain bandwidth limited
IF stages and consequently, the overall receiver cost.