Power Consumption Modeling in Integrated Optical-Wireless Access Network

Access segment of both optical and wireless networks are well known for their domination over total network power consumption. Therefore, the study on energy consumption particularly in the integrated optical-wireless access network is crucial as the energy consumption issue is increasingly vital nowadays. In this paper, the total power consumption and energy efficiency of integrated Gigabit Passive Optical Network (GPON) and two different wireless technologies namely, Worldwide Interoperability for Microwave Access (WiMAX) and Long-Term Evolution (LTE) is evaluated. A semi-analytical power consumption model is employed and applied in the simulation model for the energy performance assessment. Also, various parameters that may affect the energy performance such as split ratio, femtocell base station (FBS) range, broadcast factor and modulation scheme are analyzed. It was found that, GPON-LTE has the worst energy efficiency performance compared to GPON-WiMAX even though it offers the highest data rates.