  In this paper power allocation in a cellular network, which transmitter uses
massive multiple inputs multiple outputs (MIMO) system was studied. As circuit
power consumption is increased by the number of antenna in transmitter and
users, thus, to analyze the performance of the network, energy efficiency
objective function with considering circuit power consumption was selected. An
energy efficiency optimization problem under both maximum transmit power and
quality of service (QoS) constraints was considered. To solve this problem
under cooperation between users and their base station (BS), energy efficient
power allocation algorithm was proposed. In numerical result convergence of the
algorithm was shown, also the appropriate number of transmit antenna and users
were obtained. Finally, pilot contamination effect was evaluated, where it
showed energy efficiency fell down dramatically.
