Energy Efficiency optimization in OFDM Power Telecommunication Networks

The energy efficiency performance of Orthogonal Frequency Division Multiplexing (OFDM) in cellular networks is strongly affected by power allocations and channel allocations due to the inter-cell interference. In this paper, we talk about the energy efficiency optimization problem in OFDM-based cellular networks. To the end, we construct an energy efficiency optimization function, which maximizes energy efficiency and guarantees users' requirement. Because the model proposed is a nonlinear fractional program, which is NP-hard. To solve the model, we use the successive convex appropriate method to appropriate the objective function. And then we use the Lagrange dual method and sub-gradient to address the sub-optimal problem. Simulation results show that energy efficiency is convergence and maximum energy efficiency performance can be obtained.