International Journal of Antennas and Propagation / 2014 / Article / Tab 1

Research Article

Massive MIMO Channel Models: A Survey

Table 1

Features of massive MIMO.

FeatureMain reason

AdvantagesHigh spectrum efficiency [6, 9]Large multiplexing gain and array gain
High energy efficiency [6, 9]Radiated energy can be concentrated on UE
High reliability [9]Large diversity gain
Efficient linear precoder/detector [9]Favorable propagation condition for i.i.d. Rayleigh channel
Weak interuser interference and enhanced physical security [6]Orthogonal UE channels and extremely narrow beam
Simple scheduling scheme [16]Channel harden phenomenon averages out the fast fading
Robust to individual element failure [6]Large number of antenna array elements

DisadvantagesPilot contamination [8]Limited orthogonal pilots as of bounded coherent interval and bandwidth
High signal processing complexity [9]Large number of antennas and multiplexing UE
Sensitive to beam alignment [6]Extremely narrow beam is sensitive to UE moving or antenna array swaying
Poor broadcast channel [6]Be blind to UE positions

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