Massive-MIMO is an exciting and attractive technique enabler for upcoming 5G transmission systems due to the reason that it provides numerous orders of throughput and energy efficiency (EE) gains over recent LTE and LTE-Advanced systems. Massive-MIMO is a multiuser MIMO technique in which 'K' single antenna user equipments (UE's) are treated simultaneously over the identical time-frequency resource by a base station (BS) deployed with a huge number 'M' antennas, i.e., M K. This paper evaluates the energy efficiency (EE) enhancements in the case when macro-cell topography is replaced with massive MIMO at the Base Station (BS) and cover with small-cell access points (SCAs).
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