Analysis of power consumption in OFDM systems

The energy efficiency of various OFDM systems, such as optical, mobile, Wireless and WiMaX systems, has been analyzed in this paper. High peak to average power ratio that may appear in modulation process is one of the main problems in OFDM systems. The influence of subcarriers number to the peak-to-average power ratio in different OFDM systems has been studied. The results of analysis are presented in tables. The main goal is to provide a comparative study that can be used for an optimal system selection with predefined power consumption requirements.