Energy efficiency analysis for MIMO transmission schemes in LTE

The demand for higher data rates in wireless communication systems has become inevitable with the availability of diverse range of multimedia applications in mobile communications today. Multiple Input Multiple Output (MIMO) antennas is one of the technologies utilized to support the required higher data rates in wireless communications. However, energy efficiency in cellular communications has generated lots of interest recently. Energy efficiency metrics will provide a yardstick for comparison and a pathway towards achieving the objectives of green communications in cellular networks. This paper investigates the energy efficiency of different MIMO transmission schemes applicable in 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) and compares them with each other and SISO transmission. The Energy Consumption Rating (ECR) of the various MIMO schemes are derived and discussed.