Energy-efficient massive MIMO system analysis: From a circuit power perspective

In this paper, we present an analysis of the energy-efficiency (EE) of massive multiple-input multiple-output (MIMO) systems from a circuit power perspective. We first study the power consumption of a CMOS technology related to processing cycles and logic area. Based on the power consumption model, we formulate the power equation of an Orthogonal Frequency Division Multiplexing (OFDM)-MIMO system related to design parameters. The close form of an EE equation is obtained by the ratio between total transmission bits and the energy consumption with unit Mbits/Joule. Compared with existing analysis work, the proposed model is related directly to the CMOS circuit model which is believed more accurate.