In view of energy efficiency in survival multicast networks with physical layer impairment

this paper proposes a physical layer impairment-based energy-efficient multicast algorithm.This algorithm optimizes the selection of the operating and protecting paths and makes the judgment of physical impairment constraint by modifying the energy consumption cost for operating and protecting the links and minimizes the network energy consumption under the condition of satisfying the physical impairment constraint.Simulation results indicate that this algorithm can save network energy consumption under the condition of satisfying the physical layer impairment constraint.