Outage performance of NOMA with TAS/MRC in dual hop AF relaying networks

Abstract

We study outage performance of a downlink multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) in dual hop amplify-and-forward (AF) relay communication system over frequency non-selective and slow fading channels with Nakagami-m distribution. In the network, the base station (BS) and mobile users equipped by multiantenna communicate by the help of fixed gain AF relay with single antenna. In the network, transmit antenna selection (TAS) and maximal ratio combining (MRC) diversity techniques are employed at the BS and mobile users, respectively. Exact closed-form outage probability is derived. Analytical results are validated by Monte Carlo simulations.