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Performance Analysis of Downlink MIMO NOMA Vehicular Networks

For a vehicular network, non-orthogonal multiple access (NOMA) allows multiple users to be served in the same time frequency block. In this letter, we consider a wireless downlink vehicular multiple-input-multiple-output (MIMO) NO-MA network consisting a base station, a cental user and a cell-edge user. Employing maximum ratio-combing technique, we obtain the function of achievable rates. In order to get the the theoretical outage performance, we studied the Wishart matrices to express the achievable rates. We obtain both the exact results of outage probability and the asymptotic results of outage probability. Numerical results show that our exact results match the simulation results.