Transmitter Receiver Antenna Selection for MIMO-NOMA System

Non-orthogonal multiple access (NOMA) technique has been introduced in order to overcome the problems experienced while making use of all the possibilities of technology in the next generation 5G wireless communication. The NOMA technique is used together with different techniques to provide solutions to various problems. As one of these techniques, multiple-input multiple-output (MIMO) technique creates a combination with NOMA and used to meet the high spectral efficiency expected from 5G. On the other hand, having multiple antennas in this combination technique means that multiple radio frequencies (RF) circuit chain, which results in higher cost and system complications. Antenna selection algorithms have been developed to overcome this problem. In this work, antenna selection is performed by using max-max-max algorithms. Bit error rate (BER) performances have been evaluated by allocating different power to users at different distances. As a result of the evaluations, it has been observed that the distance changed the channel coefficient and the changing channel coefficient affected the antenna selection and caused a difference in the BER values.