Fig. 6
From: Energy-efficient power allocation for massive M2M communication over LTE-A cellular uplink
The total energy efficiency with different numbers of MTCDs. The MTCDs are uniformly distributed in a 100-m radius of the MTCG, and the MTCG is uniformly distributed in a 1000-m radius of the BS. The payload of each MTCD is 1000 bit/TTI, and the self-interference of MTCG is Ω=1 dB