Energy Efficiency Maximization of Cell-free based THz Cooperative Communication System

This work deals with the maximization of energy efficiency of cell-free based terahertz (THz) co-operative communication system consisting of multiple access points (APs), a relay (RN) and an end user equipment (UE). APs collectively transmit their information to RN in different sub-bands following carrier aggregation scheme. RN forwards those data to UE in different sub-band following amplify forward scheme. Following this configuration, an optimal allocation policy of relay gain and transmit power of the AP and RN to maximize overall energy efficiency has been proposed. Numerical results demonstrate the efficacy of the proposed method.