Fig. 1From: Energy efficiency and sum rate tradeoffs for massive MIMO systems with underlaid device-to-device communicationsSystem model where a multi-antenna BS communicates in the downlink with multiple CUEs, while multiple user pairs communicate in D2D mode. The CUEs are distributed uniformly in the coverage area and the D2D users are distributed according to a PPP. The D2D users that are outside the coverage area are only considered as interferersBack to article page