Fig. 2From: Energy efficiency and sum rate tradeoffs for massive MIMO systems with underlaid device-to-device communicationsCoverage probability as a function of β t , t∈{d,c}: analysis versus Monte Carlo simulations for a D2D users with λ d =10−5 and b CUEs with λ d =10−5 and T c ∈{4,70}. The number of CUEs is U c =4Back to article page